Hydrogenaudio Knowledgebase - User contributions [en]

Topic Index

2005-04-20T14:45:39Z

24.147.201.151: /* Resources */

Currently most of these links lead nowhere due to the fact that we are considering how to best convert the [http://doc.hydrogenaudio.org/wikis/hydrogenaudio/FrontPage old material] and how to reorganize things in a more efficient manner.

* Please see [http://www.hydrogenaudio.org/forums/index.php?showtopic=12979&st=25&p=247441&#entry247441 this thread] for a discussion of the future structure of this wiki. If you have thoughts, comments, suggestions, etc., please join in this discussion. In the meantime, please feel free to fill in gaps in the information below.
* See also [http://www.hydrogenaudio.org/forums/index.php?showtopic=28658 style related discussion]

==General Information==

===Guides===
* [[Create a long-term archive]]
* [[Enabling DMA]]
* [[Create a lossless back-up with EAC and Flac]]
* [[EAC and Lame | Configuring EAC and Lame]]
* [[EAC_and_Vorbis | Configuring EAC and Vorbis]]
* [[EAC_and_WavPack | Configuring EAC and Wavpack]]
* [[EAC_and_Flac | Configuring EAC and FLAC]]

==Audio Formats==

===[[Lossy]]===
*[[AAC]]
*[[AC3]]
*[[ATRAC3]]
*[[DTS]]
*[[MP2]]
*[[MP3]]
*[[Musepack]]
*[[Ogg Vorbis]]
*[[QDesign]]
*[[VQF]]
*[[WMA]]

===[[Lossless]]===

*[[ALAC|Apple Lossless]]
*[[FLAC|Free Lossless Audio Compressor]]
*[[LA|Lossless Audio]]
*[[LPAC]]
*[[Monkey's Audio]]
*[[OptimFROG]]
*[[RealAudio Lossless]]
*[[Shorten]]
*[[TTA|True Audio]]
*[[WavPack]]
*[[WMA|WMA Lossless]]

===[[Metadata]] (Tags)===
* [[APEv1]]
* [[APEv2]]
* [[ID3v1]]
* [[ID3v1.1]]
* [[ID3v2]]
* [[Vorbis Comment]]

==Media Extractors==

===CD Extractors===

* [[Exact_Audio_Copy|Exact Audio Copy]] (Win32)
* [[iTunes]] (Win32/OsX)
* [[cdparanoia]] (Posix)
* [[CDex]] (Win32)
* [[PlexTools]] (Win32)
* [[dBpowerAMP with AccurateRip]] (Win32)

===DVD Extractors===
* [[DVDDecrypter]] (Win32)

==Media Players==

=== Windows ===

* [[Apollo]]

* [[dBpowerAMP]]

* [[Foobar2000:Foobar2000|foobar2000]]

* [[iTunes]]

* [[musikCube]]

* [[Quintessential Player]]

* [[VUplayer]]

* [[Winamp]]

* [[Windows Media Player]]

* [[wxMusik]]

* [[XMPlay]]

===Linux/BSD===

* [[Amarok]]

* [[BMP]]

* [[JuK]]

* [[LAMIP]]

* [[Muine]]

* [[Music Player Daemon (MPD)]]

* [[Rhythmbox]]

* [[wxMusik]]

* [[XMMS]]

===Mac OS X (Non-BSD Specific) ===

* [[iTunes]]

* [[skiTunes]]

* [[Whamb]]

===Other===

* [[CL-Amp]] (BeOS)

==Audio Editors==

=== Windows ===

* [[Adobe_Audition|Adobe Audition]] (Previously known as CoolEdit)
* [[Audacity]]

===Linux/BSD===

* [[Audacity]]

===Mac OS X (Non-BSD Specific) ===

* [[Audacity]]

===Other===

==Testing Software==

===Subjective Perceptual===

* [[ABC/HR]]

* [[PCABX]]

===Objective===

''Note: Might be good to put something here about the problems of quality comparisons using graphs, frequency sweeps, etc.''

* [[EAQUAL]]

* [[Rightmark_Audio_Analyzer|Rightmark Audio Analyzer]]

==Audio Hardware==

===PC Audio===

*[[Terratec EWX 24/96]]
*[[M-Audio Audiophile 24/96]]
*[[Emu 1212M 24/192]]

===HiFi===

===Digital Audio Players===

'''Portable Flash'''

''(These players make use of a internal flash drive.)''

* [[Creative MuVo]]

* [[iRiver iFP Series]]

* [[MPIO lFP Series]]

* [[Rio Carbon]]

* [[Neuros]]

* [[Apple iPod shuffle]]

'''Portable HD'''

''(These players make use of a internal harddrive.)''

* [[Apple iPod]]

* [[iRiver H-Series]]

* [[MPIO H-Series]]

* [[Rio Karma]]

* [[iAudio M3]]

* [[Neuros]]

* [[Archos Jukebox with Rockbox Software]]

'''Portable CD'''

'''Car Players'''

''(Car stereos that can read MP3, Vorbis, WMA, etc.).''

* [[Aiwa CDC-MP3]]

==Audio Theory==

===Analog Audio===

===Digital Audio===
[[replaygain]]

===Testing Methodology===

==Audio Development==

===Getting Started===

===Tools===

* [http://www.mathworks.com/products/matlab/ MATLAB 7.0] commercial software for algorithmic design, developement, engineering, and scientific computing.
* [http://www.octave.org/ GNU Octave] open-source alternative software (GPL) to MATLAB for numerical computations, engineering, and scientific computing. (multi-platform support)
* [http://www.fftw.org/ FFTW] Is a C subroutine library for computing the discrete Fourier transform (DFT) in one or more dimensions on real and complex inputs.
* [http://gcc.gnu.org/ GCC] THE GNU compiler collection for C, C++, Objective-C, Fortran, Java, and Ada.
* [http://www.bloodshed.net/devcpp.html DevCPP] free front-end IDE and compiler for the C and C++ languages. Delphi and C source code available.

===Resources===

* [http://www.hydrogenaudio.org/forums/index.php?showforum=30 Scientific/R&D Forums] for Psychoacoustic, DSP, Electrical Engineering, theory, and coding related questions. (most questions are generally asnwered)
* [http://www.aes.org/ AES] The audio engineering society website. Home of year-round world AES conferences.
* [http://www.springeronline.com/sgw/cda/frontpage/0,11855,5-0-22-1437236-0,00.html?referer=www.springer.de%2Fcgi-bin%2Fsearch_book.pl%3Fisbn%3D3-540-65063-6 Psychoacoustics - Facts and Models] author's Zwicker, Fastl, and Hugo, revised 1999 second edition. THE book for comprehensive psychoacoustics models and figures.
* [http://www.dspguru.com/info/books/favor.htm Scientist and Engineer's Guide to DSP] author Steve Smith, a great guide for beginners new to the subject of DSP (free online text)
* [http://www.dsptutor.freeuk.com/ DSP Tutorial] this site provides another good introduction in to the area of DSP.
* [http://www.musicdsp.org/archive.php?classid=2 Music-DSP] source-code archive for anaylsis, filters, effects and synthesis. (C, C++, and Java code)
* [http://perso.wanadoo.fr/polyvalens/clemens/wavelets/wavelets.html#section5 A Really friendly guide to Wavelets] A good introduction to wavelets aimed towards engineer, requires a fair amount of background knowledge.

==Audio Resources==

===Websites===

''Note: Let's include a small description to the side for now, so that we have something to work with when this section becomes large enough for its own page''

* http://www.audiocoding.com (Page with a wiki on technical audio topics, homepage of FAAC and FAAD2, also has an AAC forum.)
* http://www.ff123.net (Lots of general information on various MP3 implementations, test samples, testing methodology information, homepage of ABC/HR)
* http://www.head-fi.org (general information/board about head phones and portable audio players)
* http://www.rarewares.org (Downloads for many audio and media tools)

===Articles===

===Listening Tests===

==Other Topics==

===Video===

* [[MPEG-4 Visual]]
* [[Theora]]
* [[Real Video]]
* [[Windows Media Video]]
* [[VP6]]

===[[Container Format]]s===
* [[AVI]]
* [[MP4]]
* [[MOV]]
* [[ASF]]
* [[Matroska]]
* [[Ogg]]

==Glossary==

* [[Glossary_Of_Audio_Terms|Glossary of Audio Terms]]

MPIO H-Series

2005-04-20T03:43:38Z

24.147.201.151: /* HD100 Series */

The H-series is a series of portable harddisk based audio players created by [http://www.mpio.com/goods/mp3player.php MPIO].
MPIO is a Korean based company similiar to [http://wiki.hydrogenaudio.org/index.php?title=IRiver_H-Series IRiver]

=MPIO H-Series overview=
==Common features==

These features are common for all players in the H-series.

== HD100 Series ==

The HD100-series consist of the H100 series, with a capacity of 20GB respectively.

* USB 2.0
* Included plug-ins for WMP, Real Jukebox, and ITunes(mac).
* Appears as a "mass storage device" without any external software.
* Includes a built-in microphone for speech-recording and voice-activated navigation (based upon VoiceNav speech recognition)
* Playlist support
* Provides 480 seconds of ESP (Electronic Shock Protection)
* FM Tuner with 12 station preset
* Rechargable Lithium-Ion Battery that lasts up to 12 hours.
* Large 7 Line LCD-Display
* Holographic Display
* 6-band programmable EQ
* Upgradable firmware

== HD200 Series ==

The HD200-series consist of the H200 series, with a capacity of 5GB respectively.

* USB 2.0
* MPIO Earphones
* Playlist and Navigation Suppose (M3U, PLS)
* 8-Line LCD with bright clear blue backlight
* Rechargable Lithium-Ion battery that lasts up to 16 hours.
* File Managment
* Easy to use GUI
* Direct Encoding
* Multi-menu & ID3 language tags.
* MAC compatible V. 9.2 and up.
* Upgradable firmware.

== HD300 Series ==
The HD300-series consist of the H300 series, with a capacity of 20GB respectively.

== External links ==

MPIO H-Series

2005-04-20T03:40:09Z

24.147.201.151: /* HD200 Series */

The H-series is a series of portable harddisk based audio players created by [http://www.mpio.com/goods/mp3player.php MPIO].
MPIO is a Korean based company similiar to [http://wiki.hydrogenaudio.org/index.php?title=IRiver_H-Series IRiver]

=MPIO H-Series overview=
==Common features==

These features are common for all players in the H-series.

== HD100 Series ==

The HD100-series consist of the H100 series, with a capacity of 20GB respectively.

* USB 2.0
* Included plug-ins for WMP, Real Jukebox, and ITunes(mac).
* HD100 appears as a "mass storage device" without any external software.
* HD100 includes a built-in microphone for speech-recording and voice-activated navigation (based upon VoiceNav speech recognition)
* Playlist support
* HD100 provides 480 seconds of ESP (Electronic Shock Protection)
* FM Tuner with 12 station preset
* Rechargable Lithium-Ion Battery that lasts up to 12 hours.
* Large 7 Line LCD-Display
* Holographic Display
* 6-band programmable EQ
* Upgradable firmware

== HD200 Series ==

The HD200-series consist of the H200 series, with a capacity of 5GB respectively.

* USB 2.0
* MPIO Earphones
* Playlist and Navigation Suppose (M3U, PLS)
* 8-Line LCD with bright clear blue backlight
* Rechargable Lithium-Ion battery that lasts up to 16 hours.
* File Managment
* Easy to use GUI
* Direct Encoding
* Multi-menu & ID3 language tags.
* MAC compatible V. 9.2 and up.
* Upgradable firmware.

== HD300 Series ==
The HD300-series consist of the H300 series, with a capacity of 20GB respectively.

== External links ==

MPIO H-Series

2005-04-20T03:39:16Z

24.147.201.151: /* HD200 Series */

The H-series is a series of portable harddisk based audio players created by [http://www.mpio.com/goods/mp3player.php MPIO].
MPIO is a Korean based company similiar to [http://wiki.hydrogenaudio.org/index.php?title=IRiver_H-Series IRiver]

=MPIO H-Series overview=
==Common features==

These features are common for all players in the H-series.

== HD100 Series ==

The HD100-series consist of the H100 series, with a capacity of 20GB respectively.

* USB 2.0
* Included plug-ins for WMP, Real Jukebox, and ITunes(mac).
* HD100 appears as a "mass storage device" without any external software.
* HD100 includes a built-in microphone for speech-recording and voice-activated navigation (based upon VoiceNav speech recognition)
* Playlist support
* HD100 provides 480 seconds of ESP (Electronic Shock Protection)
* FM Tuner with 12 station preset
* Rechargable Lithium-Ion Battery that lasts up to 12 hours.
* Large 7 Line LCD-Display
* Holographic Display
* 6-band programmable EQ
* Upgradable firmware

== HD200 Series ==

The HD200-series consist of the H200 series, with a capacity of 5GB respectively.

* USB 2.0
* MPIO Earphones
* Playlist and Navigation Suppose (M3U, PLS)
* 8-Line LCD with bright clear blue blacklight
* Rechargable Lithium-Ion battery that lasts up to 16 hours.
* File Managment
* Easy to use GUI
* Direct Encoding
* Multi-menu & ID3 language tags.
* MAC compatible V. 9.2 and up.
* Upgradable firmware.

== HD300 Series ==
The HD300-series consist of the H300 series, with a capacity of 20GB respectively.

== External links ==

MPIO H-Series

2005-04-19T22:34:04Z

24.147.201.151:

The H-series is a series of portable harddisk based audio players created by [http://www.mpio.com/goods/mp3player.php MPIO].

=Common features=

== HD100 Series ==
== HD200 Series ==
== HD300 Series ==
== External links ==

Vorbis

2005-04-19T20:40:22Z

24.147.201.151: /* Hardware */

=Introduction=
'''Ogg Vorbis''' ([http://www.vorbis.com www.vorbis.com]) is a fully open, non-proprietary, patent-free (subject to [http://www.hydrogenaudio.org/forums/index.php?showtopic=13531 speculation]), and royalty-free, general-purpose compressed audio format for mid to high quality (8khz-48.0kHz, 16+ bit, polyphonic) audio and music at fixed and variable bitrates from 16 to >256 kbps/channel. This places vorbis in the same competitive class as audio representations such as MPEG-4 ([[AAC]]), and similar to, but higher performance [[MP3]], twinvq ([[VQF]]), [[WMA]] and [[PAC]].

Vorbis is the first of a planned family of Ogg multimedia coding formats being developed as part of Xiph.org's ogg multimedia project.

Informal listening test suggests Vorbis to be comparable to MPEG-4 [[AAC]] at most bitrates and [[MPC]] at 128 kbps. Transparency is generally reached at about 150-170 kbps (-q 5) (with some exceptions). The encoder is reasonably young and unoptimized, so further improvements can always be expected.

Unfortunately, Xiph.org has failed to improve Vorbis at a steady rate since its initial 1.0 release in July 2002 (due to other developement projects and time constraints). Since then development has been lead by other coders such as [http://sjeng.org/vorbisgt3.html Garf] and [http://www.geocities.jp/aoyoume/aotuv/ Aoyumi] Aoyumi's AoTuV series of encoders was incorporated into the September 2004 release of 1.1, which brought about the first quality improvements across the board for 2 years. Currently Aoyumi is working on AoTuv Beta 4 and future releases.

==Pros==
* Free (as in speech), Open Source and claimed to be patent free
* Good all-round performance (>48 kbps - a leading codec at [http://www.rjamorim.com/test/multiformat128/results.html 128 kbps])
* Well written [http://www.xiph.org/ogg/vorbis/docs.html specs]
* Several portable [http://wiki.hydrogenaudio.org/index.php?title=Ogg_Vorbis#Hardware hardware players]
* Suitable for internet-streaming (via [http://www.icecast.org/ Icecast])
* Fully [[gapless]] playback

==Cons==
* Limited official development (Third-party developement is always encouraged)
* Current implementations are more computationally intensive to encode and decode than MP3 (Vorbis 2.0 seeks to overcome this limitations by slimlining the decoder)
* Quality at low bitrates could benefit from further tuning

=Technologies used in compression=
* Advanced psymodel (based upon [[ATH]] model)
* Coupled stereo modes ([http://us.xiph.org/ogg/vorbis/doc/stereo.html point/phase stereo] and lossless)
* [[Huffman coding]]
* [[Vector quantization]]
* Modified Discrete Cosine Transform ([[MDCT]])
* Multiple block sizes for window switching

=Software=
'''Encoders'''
* [[oggenc]]

'''Decoders'''

* [[ogg123]] for Unix systems (GPL), a very simple to use command-line player.
* [http://qtcomponents.sourceforge.net/ QuickTime Component] (Allows playback in [[QuickTime]]/[[iTunes]])
* [http://corevorbis.corecodec.org/ CoreVorbis] (DirectShow)
* [http://www.illiminable.com/ogg/ illiminable Ogg Directshow Filters] (Also plays Speex, Theora and FLAC)

=Hardware=
The following list contains some players that support Vorbis playback.
* [[iRiver H-Series]]
* [[Rio Karma]]
* [[IAudio M3]]
* [[MPIO H-Series]]
* [[Neuros]]

=External links=
The following links contain information surrounding the Ogg Vorbis codec that can be found on Hydrogenaudio and elsewhere throughtout the web.
* [[Ogg]] (Container)
* [http://en.wikipedia.org/wiki/Vorbis Ogg Vorbis at Wikipedia.]
* [http://www.audiocoding.com/modules/wiki/?page=Ogg+Vorbis Ogg Vorbis at AudioCoding]
* [http://www.rarewares.org/ogg.html Ogg Vorbis binaries at Rarewares. ]
* [http://www.hydrogenaudio.org/show.php/showtopic/13531 Discussion of Vorbis' legal status]
* [http://www.hydrogenaudio.org/forums/index.php?showtopic=15049 Recommended settings thread for encoding with Vorbis.]
* [http://www.geocities.jp/aoyoume/aotuv/ Aoyumi homepage tuned versions of Vorbis 1.1 encoder and current beta binaries.]
* [http://homepage3.nifty.com/blacksword/index_e.htm Archer homepage optimized versions of AoTuV Beta 3 Vorbis encoder and SSE optmizations. ]
* [http://www.xiph.org Xiph.org Foundation]
* [http://wiki.xiph.org/index.php/Bounties Xiph.org Vorbis bounties]

Vorbis

2005-04-19T20:33:03Z

24.147.201.151: /* Technologies used in compression */

=Introduction=
'''Ogg Vorbis''' ([http://www.vorbis.com www.vorbis.com]) is a fully open, non-proprietary, patent-free (subject to [http://www.hydrogenaudio.org/forums/index.php?showtopic=13531 speculation]), and royalty-free, general-purpose compressed audio format for mid to high quality (8khz-48.0kHz, 16+ bit, polyphonic) audio and music at fixed and variable bitrates from 16 to >256 kbps/channel. This places vorbis in the same competitive class as audio representations such as MPEG-4 ([[AAC]]), and similar to, but higher performance [[MP3]], twinvq ([[VQF]]), [[WMA]] and [[PAC]].

Vorbis is the first of a planned family of Ogg multimedia coding formats being developed as part of Xiph.org's ogg multimedia project.

Informal listening test suggests Vorbis to be comparable to MPEG-4 [[AAC]] at most bitrates and [[MPC]] at 128 kbps. Transparency is generally reached at about 150-170 kbps (-q 5) (with some exceptions). The encoder is reasonably young and unoptimized, so further improvements can always be expected.

Unfortunately, Xiph.org has failed to improve Vorbis at a steady rate since its initial 1.0 release in July 2002 (due to other developement projects and time constraints). Since then development has been lead by other coders such as [http://sjeng.org/vorbisgt3.html Garf] and [http://www.geocities.jp/aoyoume/aotuv/ Aoyumi] Aoyumi's AoTuV series of encoders was incorporated into the September 2004 release of 1.1, which brought about the first quality improvements across the board for 2 years. Currently Aoyumi is working on AoTuv Beta 4 and future releases.

==Pros==
* Free (as in speech), Open Source and claimed to be patent free
* Good all-round performance (>48 kbps - a leading codec at [http://www.rjamorim.com/test/multiformat128/results.html 128 kbps])
* Well written [http://www.xiph.org/ogg/vorbis/docs.html specs]
* Several portable [http://wiki.hydrogenaudio.org/index.php?title=Ogg_Vorbis#Hardware hardware players]
* Suitable for internet-streaming (via [http://www.icecast.org/ Icecast])
* Fully [[gapless]] playback

==Cons==
* Limited official development (Third-party developement is always encouraged)
* Current implementations are more computationally intensive to encode and decode than MP3 (Vorbis 2.0 seeks to overcome this limitations by slimlining the decoder)
* Quality at low bitrates could benefit from further tuning

=Technologies used in compression=
* Advanced psymodel (based upon [[ATH]] model)
* Coupled stereo modes ([http://us.xiph.org/ogg/vorbis/doc/stereo.html point/phase stereo] and lossless)
* [[Huffman coding]]
* [[Vector quantization]]
* Modified Discrete Cosine Transform ([[MDCT]])
* Multiple block sizes for window switching

=Software=
'''Encoders'''
* [[oggenc]]

'''Decoders'''

* [[ogg123]] for Unix systems (GPL), a very simple to use command-line player.
* [http://qtcomponents.sourceforge.net/ QuickTime Component] (Allows playback in [[QuickTime]]/[[iTunes]])
* [http://corevorbis.corecodec.org/ CoreVorbis] (DirectShow)
* [http://www.illiminable.com/ogg/ illiminable Ogg Directshow Filters] (Also plays Speex, Theora and FLAC)

=Hardware=
The following list contains some players that support Vorbis playback.
* [[iRiver H-Series]]
* [[Rio Karma]]
* [[IAudio M3]]
* [[Neuros]]

=External links=
The following links contain information surrounding the Ogg Vorbis codec that can be found on Hydrogenaudio and elsewhere throughtout the web.
* [[Ogg]] (Container)
* [http://en.wikipedia.org/wiki/Vorbis Ogg Vorbis at Wikipedia.]
* [http://www.audiocoding.com/modules/wiki/?page=Ogg+Vorbis Ogg Vorbis at AudioCoding]
* [http://www.rarewares.org/ogg.html Ogg Vorbis binaries at Rarewares. ]
* [http://www.hydrogenaudio.org/show.php/showtopic/13531 Discussion of Vorbis' legal status]
* [http://www.hydrogenaudio.org/forums/index.php?showtopic=15049 Recommended settings thread for encoding with Vorbis.]
* [http://www.geocities.jp/aoyoume/aotuv/ Aoyumi homepage tuned versions of Vorbis 1.1 encoder and current beta binaries.]
* [http://homepage3.nifty.com/blacksword/index_e.htm Archer homepage optimized versions of AoTuV Beta 3 Vorbis encoder and SSE optmizations. ]
* [http://www.xiph.org Xiph.org Foundation]
* [http://wiki.xiph.org/index.php/Bounties Xiph.org Vorbis bounties]

Vorbis

2005-04-19T20:29:49Z

24.147.201.151: /* Introduction */

=Introduction=
'''Ogg Vorbis''' ([http://www.vorbis.com www.vorbis.com]) is a fully open, non-proprietary, patent-free (subject to [http://www.hydrogenaudio.org/forums/index.php?showtopic=13531 speculation]), and royalty-free, general-purpose compressed audio format for mid to high quality (8khz-48.0kHz, 16+ bit, polyphonic) audio and music at fixed and variable bitrates from 16 to >256 kbps/channel. This places vorbis in the same competitive class as audio representations such as MPEG-4 ([[AAC]]), and similar to, but higher performance [[MP3]], twinvq ([[VQF]]), [[WMA]] and [[PAC]].

Vorbis is the first of a planned family of Ogg multimedia coding formats being developed as part of Xiph.org's ogg multimedia project.

Informal listening test suggests Vorbis to be comparable to MPEG-4 [[AAC]] at most bitrates and [[MPC]] at 128 kbps. Transparency is generally reached at about 150-170 kbps (-q 5) (with some exceptions). The encoder is reasonably young and unoptimized, so further improvements can always be expected.

Unfortunately, Xiph.org has failed to improve Vorbis at a steady rate since its initial 1.0 release in July 2002 (due to other developement projects and time constraints). Since then development has been lead by other coders such as [http://sjeng.org/vorbisgt3.html Garf] and [http://www.geocities.jp/aoyoume/aotuv/ Aoyumi] Aoyumi's AoTuV series of encoders was incorporated into the September 2004 release of 1.1, which brought about the first quality improvements across the board for 2 years. Currently Aoyumi is working on AoTuv Beta 4 and future releases.

==Pros==
* Free (as in speech), Open Source and claimed to be patent free
* Good all-round performance (>48 kbps - a leading codec at [http://www.rjamorim.com/test/multiformat128/results.html 128 kbps])
* Well written [http://www.xiph.org/ogg/vorbis/docs.html specs]
* Several portable [http://wiki.hydrogenaudio.org/index.php?title=Ogg_Vorbis#Hardware hardware players]
* Suitable for internet-streaming (via [http://www.icecast.org/ Icecast])
* Fully [[gapless]] playback

==Cons==
* Limited official development (Third-party developement is always encouraged)
* Current implementations are more computationally intensive to encode and decode than MP3 (Vorbis 2.0 seeks to overcome this limitations by slimlining the decoder)
* Quality at low bitrates could benefit from further tuning

=Technologies used in compression=
* Advanced psymodel (based upon [[ATH]] model)
* Coupled stereo modes ([http://us.xiph.org/ogg/vorbis/doc/stereo.html point/phase stereo] and lossless)
* [[Huffman coding]]
* [[Vector quantization]]
* Modified discrete cosine transform ([[MDCT]])
* Multiple block sizes for window switching

=Software=
'''Encoders'''
* [[oggenc]]

'''Decoders'''

* [[ogg123]] for Unix systems (GPL), a very simple to use command-line player.
* [http://qtcomponents.sourceforge.net/ QuickTime Component] (Allows playback in [[QuickTime]]/[[iTunes]])
* [http://corevorbis.corecodec.org/ CoreVorbis] (DirectShow)
* [http://www.illiminable.com/ogg/ illiminable Ogg Directshow Filters] (Also plays Speex, Theora and FLAC)

=Hardware=
The following list contains some players that support Vorbis playback.
* [[iRiver H-Series]]
* [[Rio Karma]]
* [[IAudio M3]]
* [[Neuros]]

=External links=
The following links contain information surrounding the Ogg Vorbis codec that can be found on Hydrogenaudio and elsewhere throughtout the web.
* [[Ogg]] (Container)
* [http://en.wikipedia.org/wiki/Vorbis Ogg Vorbis at Wikipedia.]
* [http://www.audiocoding.com/modules/wiki/?page=Ogg+Vorbis Ogg Vorbis at AudioCoding]
* [http://www.rarewares.org/ogg.html Ogg Vorbis binaries at Rarewares. ]
* [http://www.hydrogenaudio.org/show.php/showtopic/13531 Discussion of Vorbis' legal status]
* [http://www.hydrogenaudio.org/forums/index.php?showtopic=15049 Recommended settings thread for encoding with Vorbis.]
* [http://www.geocities.jp/aoyoume/aotuv/ Aoyumi homepage tuned versions of Vorbis 1.1 encoder and current beta binaries.]
* [http://homepage3.nifty.com/blacksword/index_e.htm Archer homepage optimized versions of AoTuV Beta 3 Vorbis encoder and SSE optmizations. ]
* [http://www.xiph.org Xiph.org Foundation]
* [http://wiki.xiph.org/index.php/Bounties Xiph.org Vorbis bounties]

Vorbis

2005-04-19T20:28:08Z

24.147.201.151: /* Introduction */

=Introduction=
'''Ogg Vorbis''' ([http://www.vorbis.com www.vorbis.com]) is a fully open, non-proprietary, patent-free (subject to [http://www.hydrogenaudio.org/forums/index.php?showtopic=13531 speculation]), and royalty-free, general-purpose compressed audio format for mid to high quality (8khz-48.0kHz, 16+ bit, polyphonic) audio and music at fixed and variable bitrates from 16 to >256 kbps/channel. This places vorbis in the same competitive class as audio representations such as MPEG-4 ([[AAC]]), and similar to, but higher performance [[MP3]], twinvq ([[VQF]]), [[WMA]] and [[PAC]].

Vorbis is the first of a planned family of Ogg multimedia coding formats being developed as part of Xiph.org's ogg multimedia project.

Informal listening test suggests Vorbis to be comparable to MPEG-4 [[AAC]] at most bitrates and [[MPC]] at 128 kbps. Transparency is generally reached at about 150-170 kbps (-q 5) (with some exceptions). The encoder is reasonably young and unoptimized, so further improvements can always be expected.

Unfortunately, Xiph.org has failed to improve Vorbis at a steady rate since its initial 1.0 release in July 2002 (due to other developement projects and time constraints). Since then development has been lead by other coders such as [http://sjeng.org/vorbisgt3.html Garf] and Aoyumi. Aoyumi's AoTuV series of encoders was incorporated into the September 2004 release of 1.1, which brought about the first quality improvements across the board for 2 years. Currently Aoyumi is working on AoTuv Beta 4 and future releases.

==Pros==
* Free (as in speech), Open Source and claimed to be patent free
* Good all-round performance (>48 kbps - a leading codec at [http://www.rjamorim.com/test/multiformat128/results.html 128 kbps])
* Well written [http://www.xiph.org/ogg/vorbis/docs.html specs]
* Several portable [http://wiki.hydrogenaudio.org/index.php?title=Ogg_Vorbis#Hardware hardware players]
* Suitable for internet-streaming (via [http://www.icecast.org/ Icecast])
* Fully [[gapless]] playback

==Cons==
* Limited official development (Third-party developement is always encouraged)
* Current implementations are more computationally intensive to encode and decode than MP3 (Vorbis 2.0 seeks to overcome this limitations by slimlining the decoder)
* Quality at low bitrates could benefit from further tuning

=Technologies used in compression=
* Advanced psymodel (based upon [[ATH]] model)
* Coupled stereo modes ([http://us.xiph.org/ogg/vorbis/doc/stereo.html point/phase stereo] and lossless)
* [[Huffman coding]]
* [[Vector quantization]]
* Modified discrete cosine transform ([[MDCT]])
* Multiple block sizes for window switching

=Software=
'''Encoders'''
* [[oggenc]]

'''Decoders'''

* [[ogg123]] for Unix systems (GPL), a very simple to use command-line player.
* [http://qtcomponents.sourceforge.net/ QuickTime Component] (Allows playback in [[QuickTime]]/[[iTunes]])
* [http://corevorbis.corecodec.org/ CoreVorbis] (DirectShow)
* [http://www.illiminable.com/ogg/ illiminable Ogg Directshow Filters] (Also plays Speex, Theora and FLAC)

=Hardware=
The following list contains some players that support Vorbis playback.
* [[iRiver H-Series]]
* [[Rio Karma]]
* [[IAudio M3]]
* [[Neuros]]

=External links=
The following links contain information surrounding the Ogg Vorbis codec that can be found on Hydrogenaudio and elsewhere throughtout the web.
* [[Ogg]] (Container)
* [http://en.wikipedia.org/wiki/Vorbis Ogg Vorbis at Wikipedia.]
* [http://www.audiocoding.com/modules/wiki/?page=Ogg+Vorbis Ogg Vorbis at AudioCoding]
* [http://www.rarewares.org/ogg.html Ogg Vorbis binaries at Rarewares. ]
* [http://www.hydrogenaudio.org/show.php/showtopic/13531 Discussion of Vorbis' legal status]
* [http://www.hydrogenaudio.org/forums/index.php?showtopic=15049 Recommended settings thread for encoding with Vorbis.]
* [http://www.geocities.jp/aoyoume/aotuv/ Aoyumi homepage tuned versions of Vorbis 1.1 encoder and current beta binaries.]
* [http://homepage3.nifty.com/blacksword/index_e.htm Archer homepage optimized versions of AoTuV Beta 3 Vorbis encoder and SSE optmizations. ]
* [http://www.xiph.org Xiph.org Foundation]
* [http://wiki.xiph.org/index.php/Bounties Xiph.org Vorbis bounties]

Vorbis

2005-04-19T20:24:54Z

24.147.201.151: /* Introduction */

=Introduction=
'''Ogg Vorbis''' ([http://www.vorbis.com www.vorbis.com]) is a fully open, non-proprietary, patent-free (subject to [http://www.hydrogenaudio.org/forums/index.php?showtopic=13531 speculation]), and royalty-free, general-purpose compressed audio format for mid to high quality (8khz-48.0kHz, 16+ bit, polyphonic) audio and music at fixed and variable bitrates from 16 to >256 kbps/channel. This places vorbis in the same competitive class as audio representations such as MPEG-4 ([[AAC]]), and similar to, but higher performance [[MP3]], twinvq ([[VQF]]), [[WMA]] and [[PAC]].

Vorbis is the first of a planned family of Ogg multimedia coding formats being developed as part of Xiph.org's ogg multimedia project.

Informal listening test suggests Vorbis to be comparable to MPEG-4 [[AAC]] at most bitrates and [[MPC]] at 128 kbps. Transparency is generally reached at about 150-170 kbps (-q 5) (with some exceptions). The encoder is reasonably young and unoptimized, so further improvements can always be expected.

Unfortunately, Xiph.org has failed to improve Vorbis at a steady rate since its initial 1.0 release in July 2002 (due to other developement projects and time constraints). Since then development has been lead by other coders such as Garf and Aoyumi. Aoyumi's AoTuV series of encoders was incorporated into the September 2004 release of 1.1, which brought about the first quality improvements across the board for 2 years. Currently Aoyumi is working on AoTuv Beta 4 and future releases.

==Pros==
* Free (as in speech), Open Source and claimed to be patent free
* Good all-round performance (>48 kbps - a leading codec at [http://www.rjamorim.com/test/multiformat128/results.html 128 kbps])
* Well written [http://www.xiph.org/ogg/vorbis/docs.html specs]
* Several portable [http://wiki.hydrogenaudio.org/index.php?title=Ogg_Vorbis#Hardware hardware players]
* Suitable for internet-streaming (via [http://www.icecast.org/ Icecast])
* Fully [[gapless]] playback

==Cons==
* Limited official development (Third-party developement is always encouraged)
* Current implementations are more computationally intensive to encode and decode than MP3 (Vorbis 2.0 seeks to overcome this limitations by slimlining the decoder)
* Quality at low bitrates could benefit from further tuning

=Technologies used in compression=
* Advanced psymodel (based upon [[ATH]] model)
* Coupled stereo modes ([http://us.xiph.org/ogg/vorbis/doc/stereo.html point/phase stereo] and lossless)
* [[Huffman coding]]
* [[Vector quantization]]
* Modified discrete cosine transform ([[MDCT]])
* Multiple block sizes for window switching

=Software=
'''Encoders'''
* [[oggenc]]

'''Decoders'''

* [[ogg123]] for Unix systems (GPL), a very simple to use command-line player.
* [http://qtcomponents.sourceforge.net/ QuickTime Component] (Allows playback in [[QuickTime]]/[[iTunes]])
* [http://corevorbis.corecodec.org/ CoreVorbis] (DirectShow)
* [http://www.illiminable.com/ogg/ illiminable Ogg Directshow Filters] (Also plays Speex, Theora and FLAC)

=Hardware=
The following list contains some players that support Vorbis playback.
* [[iRiver H-Series]]
* [[Rio Karma]]
* [[IAudio M3]]
* [[Neuros]]

=External links=
The following links contain information surrounding the Ogg Vorbis codec that can be found on Hydrogenaudio and elsewhere throughtout the web.
* [[Ogg]] (Container)
* [http://en.wikipedia.org/wiki/Vorbis Ogg Vorbis at Wikipedia.]
* [http://www.audiocoding.com/modules/wiki/?page=Ogg+Vorbis Ogg Vorbis at AudioCoding]
* [http://www.rarewares.org/ogg.html Ogg Vorbis binaries at Rarewares. ]
* [http://www.hydrogenaudio.org/show.php/showtopic/13531 Discussion of Vorbis' legal status]
* [http://www.hydrogenaudio.org/forums/index.php?showtopic=15049 Recommended settings thread for encoding with Vorbis.]
* [http://www.geocities.jp/aoyoume/aotuv/ Aoyumi homepage tuned versions of Vorbis 1.1 encoder and current beta binaries.]
* [http://homepage3.nifty.com/blacksword/index_e.htm Archer homepage optimized versions of AoTuV Beta 3 Vorbis encoder and SSE optmizations. ]
* [http://www.xiph.org Xiph.org Foundation]
* [http://wiki.xiph.org/index.php/Bounties Xiph.org Vorbis bounties]

Vorbis

2005-04-19T20:07:23Z

24.147.201.151: /* Technologies used in compression */

=Introduction=
'''Ogg Vorbis''' ([http://www.vorbis.com www.vorbis.com]) is a fully open, non-proprietary, patent-free (subject to [http://www.hydrogenaudio.org/forums/index.php?showtopic=13531 speculation]), and royalty-free, general-purpose compressed audio format for mid to high quality (8khz-48.0kHz, 16+ bit, polyphonic) audio and music at fixed and variable bitrates from 16 to >256 kbps/channel. This places vorbis in the same competitive class as audio representations such as MPEG-4 ([[AAC]]), and similar to, but higher performance [[MP3]], twinvq ([[VQF]]), [[WMA]] and [[PAC]].

Vorbis is the first of a planned family of Ogg multimedia coding formats being developed as part of Xiph.org's ogg multimedia project.

Informal listening test suggests Vorbis to be comparable to MPEG-4 [[AAC]] at most bitrates and [[MPC]] at 128 kbps. Transparency is generally reached at about 150-170 kbps (-q 5) (with some exceptions). The encoder is reasonably young and unoptimized, so further improvements can always be expected.

Unfortunately, Xiph.org has failed to improve Vorbis at a steady rate since its initial 1.0 release in July 2002 (due to other developement projects and time constraints). Since then development has been lead by other coders such as Garf and Aoyumi. Aoyumi's AoTuV series of encoders was incorporated into the September 2004 release of 1.1, which brought about the first quality improvements across the board for 2 years. Improvement is always encouraged in Hydrogenaudio community.

==Pros==
* Free (as in speech), Open Source and claimed to be patent free
* Good all-round performance (>48 kbps - a leading codec at [http://www.rjamorim.com/test/multiformat128/results.html 128 kbps])
* Well written [http://www.xiph.org/ogg/vorbis/docs.html specs]
* Several portable [http://wiki.hydrogenaudio.org/index.php?title=Ogg_Vorbis#Hardware hardware players]
* Suitable for internet-streaming (via [http://www.icecast.org/ Icecast])
* Fully [[gapless]] playback

==Cons==
* Limited official development (Third-party developement is always encouraged)
* Current implementations are more computationally intensive to encode and decode than MP3 (Vorbis 2.0 seeks to overcome this limitations by slimlining the decoder)
* Quality at low bitrates could benefit from further tuning

=Technologies used in compression=
* Advanced psymodel (based upon [[ATH]] model)
* Coupled stereo modes ([http://us.xiph.org/ogg/vorbis/doc/stereo.html point/phase stereo] and lossless)
* [[Huffman coding]]
* [[Vector quantization]]
* Modified discrete cosine transform ([[MDCT]])
* Multiple block sizes for window switching

=Software=
'''Encoders'''
* [[oggenc]]

'''Decoders'''

* [[ogg123]] for Unix systems (GPL), a very simple to use command-line player.
* [http://qtcomponents.sourceforge.net/ QuickTime Component] (Allows playback in [[QuickTime]]/[[iTunes]])
* [http://corevorbis.corecodec.org/ CoreVorbis] (DirectShow)
* [http://www.illiminable.com/ogg/ illiminable Ogg Directshow Filters] (Also plays Speex, Theora and FLAC)

=Hardware=
The following list contains some players that support Vorbis playback.
* [[iRiver H-Series]]
* [[Rio Karma]]
* [[IAudio M3]]
* [[Neuros]]

=External links=
The following links contain information surrounding the Ogg Vorbis codec that can be found on Hydrogenaudio and elsewhere throughtout the web.
* [[Ogg]] (Container)
* [http://en.wikipedia.org/wiki/Vorbis Ogg Vorbis at Wikipedia.]
* [http://www.audiocoding.com/modules/wiki/?page=Ogg+Vorbis Ogg Vorbis at AudioCoding]
* [http://www.rarewares.org/ogg.html Ogg Vorbis binaries at Rarewares. ]
* [http://www.hydrogenaudio.org/show.php/showtopic/13531 Discussion of Vorbis' legal status]
* [http://www.hydrogenaudio.org/forums/index.php?showtopic=15049 Recommended settings thread for encoding with Vorbis.]
* [http://www.geocities.jp/aoyoume/aotuv/ Aoyumi homepage tuned versions of Vorbis 1.1 encoder and current beta binaries.]
* [http://homepage3.nifty.com/blacksword/index_e.htm Archer homepage optimized versions of AoTuV Beta 3 Vorbis encoder and SSE optmizations. ]
* [http://www.xiph.org Xiph.org Foundation]
* [http://wiki.xiph.org/index.php/Bounties Xiph.org Vorbis bounties]

Vorbis

2005-04-19T20:05:28Z

24.147.201.151: /* Technologies used in compression */

=Introduction=
'''Ogg Vorbis''' ([http://www.vorbis.com www.vorbis.com]) is a fully open, non-proprietary, patent-free (subject to [http://www.hydrogenaudio.org/forums/index.php?showtopic=13531 speculation]), and royalty-free, general-purpose compressed audio format for mid to high quality (8khz-48.0kHz, 16+ bit, polyphonic) audio and music at fixed and variable bitrates from 16 to >256 kbps/channel. This places vorbis in the same competitive class as audio representations such as MPEG-4 ([[AAC]]), and similar to, but higher performance [[MP3]], twinvq ([[VQF]]), [[WMA]] and [[PAC]].

Vorbis is the first of a planned family of Ogg multimedia coding formats being developed as part of Xiph.org's ogg multimedia project.

Informal listening test suggests Vorbis to be comparable to MPEG-4 [[AAC]] at most bitrates and [[MPC]] at 128 kbps. Transparency is generally reached at about 150-170 kbps (-q 5) (with some exceptions). The encoder is reasonably young and unoptimized, so further improvements can always be expected.

Unfortunately, Xiph.org has failed to improve Vorbis at a steady rate since its initial 1.0 release in July 2002 (due to other developement projects and time constraints). Since then development has been lead by other coders such as Garf and Aoyumi. Aoyumi's AoTuV series of encoders was incorporated into the September 2004 release of 1.1, which brought about the first quality improvements across the board for 2 years. Improvement is always encouraged in Hydrogenaudio community.

==Pros==
* Free (as in speech), Open Source and claimed to be patent free
* Good all-round performance (>48 kbps - a leading codec at [http://www.rjamorim.com/test/multiformat128/results.html 128 kbps])
* Well written [http://www.xiph.org/ogg/vorbis/docs.html specs]
* Several portable [http://wiki.hydrogenaudio.org/index.php?title=Ogg_Vorbis#Hardware hardware players]
* Suitable for internet-streaming (via [http://www.icecast.org/ Icecast])
* Fully [[gapless]] playback

==Cons==
* Limited official development (Third-party developement is always encouraged)
* Current implementations are more computationally intensive to encode and decode than MP3 (Vorbis 2.0 seeks to overcome this limitations by slimlining the decoder)
* Quality at low bitrates could benefit from further tuning

=Technologies used in compression=
* Advanced psymodel (based upon [[ATH]] model)
* Coupled stereo modes ([http://us.xiph.org/ogg/vorbis/doc/stereo.html point/phase stereo] and lossless)
* [[Huffman coding]]
* Vector quantization
* Modified discrete cosine transform ([[MDCT]])
* Multiple block sizes for window switching

=Software=
'''Encoders'''
* [[oggenc]]

'''Decoders'''

* [[ogg123]] for Unix systems (GPL), a very simple to use command-line player.
* [http://qtcomponents.sourceforge.net/ QuickTime Component] (Allows playback in [[QuickTime]]/[[iTunes]])
* [http://corevorbis.corecodec.org/ CoreVorbis] (DirectShow)
* [http://www.illiminable.com/ogg/ illiminable Ogg Directshow Filters] (Also plays Speex, Theora and FLAC)

=Hardware=
The following list contains some players that support Vorbis playback.
* [[iRiver H-Series]]
* [[Rio Karma]]
* [[IAudio M3]]
* [[Neuros]]

=External links=
The following links contain information surrounding the Ogg Vorbis codec that can be found on Hydrogenaudio and elsewhere throughtout the web.
* [[Ogg]] (Container)
* [http://en.wikipedia.org/wiki/Vorbis Ogg Vorbis at Wikipedia.]
* [http://www.audiocoding.com/modules/wiki/?page=Ogg+Vorbis Ogg Vorbis at AudioCoding]
* [http://www.rarewares.org/ogg.html Ogg Vorbis binaries at Rarewares. ]
* [http://www.hydrogenaudio.org/show.php/showtopic/13531 Discussion of Vorbis' legal status]
* [http://www.hydrogenaudio.org/forums/index.php?showtopic=15049 Recommended settings thread for encoding with Vorbis.]
* [http://www.geocities.jp/aoyoume/aotuv/ Aoyumi homepage tuned versions of Vorbis 1.1 encoder and current beta binaries.]
* [http://homepage3.nifty.com/blacksword/index_e.htm Archer homepage optimized versions of AoTuV Beta 3 Vorbis encoder and SSE optmizations. ]
* [http://www.xiph.org Xiph.org Foundation]
* [http://wiki.xiph.org/index.php/Bounties Xiph.org Vorbis bounties]

Vorbis

2005-04-19T20:03:54Z

24.147.201.151: /* Introduction */

=Introduction=
'''Ogg Vorbis''' ([http://www.vorbis.com www.vorbis.com]) is a fully open, non-proprietary, patent-free (subject to [http://www.hydrogenaudio.org/forums/index.php?showtopic=13531 speculation]), and royalty-free, general-purpose compressed audio format for mid to high quality (8khz-48.0kHz, 16+ bit, polyphonic) audio and music at fixed and variable bitrates from 16 to >256 kbps/channel. This places vorbis in the same competitive class as audio representations such as MPEG-4 ([[AAC]]), and similar to, but higher performance [[MP3]], twinvq ([[VQF]]), [[WMA]] and [[PAC]].

Vorbis is the first of a planned family of Ogg multimedia coding formats being developed as part of Xiph.org's ogg multimedia project.

Informal listening test suggests Vorbis to be comparable to MPEG-4 [[AAC]] at most bitrates and [[MPC]] at 128 kbps. Transparency is generally reached at about 150-170 kbps (-q 5) (with some exceptions). The encoder is reasonably young and unoptimized, so further improvements can always be expected.

Unfortunately, Xiph.org has failed to improve Vorbis at a steady rate since its initial 1.0 release in July 2002 (due to other developement projects and time constraints). Since then development has been lead by other coders such as Garf and Aoyumi. Aoyumi's AoTuV series of encoders was incorporated into the September 2004 release of 1.1, which brought about the first quality improvements across the board for 2 years. Improvement is always encouraged in Hydrogenaudio community.

==Pros==
* Free (as in speech), Open Source and claimed to be patent free
* Good all-round performance (>48 kbps - a leading codec at [http://www.rjamorim.com/test/multiformat128/results.html 128 kbps])
* Well written [http://www.xiph.org/ogg/vorbis/docs.html specs]
* Several portable [http://wiki.hydrogenaudio.org/index.php?title=Ogg_Vorbis#Hardware hardware players]
* Suitable for internet-streaming (via [http://www.icecast.org/ Icecast])
* Fully [[gapless]] playback

==Cons==
* Limited official development (Third-party developement is always encouraged)
* Current implementations are more computationally intensive to encode and decode than MP3 (Vorbis 2.0 seeks to overcome this limitations by slimlining the decoder)
* Quality at low bitrates could benefit from further tuning

=Technologies used in compression=
* Advanced psymodel (based upon ATH model)
* Coupled stereo modes ([http://us.xiph.org/ogg/vorbis/doc/stereo.html point/phase stereo] and lossless)
* [[Huffman coding]]
* Vector quantization
* Modified discrete cosine transform ([[MDCT]])
* Multiple block sizes for window switching

=Software=
'''Encoders'''
* [[oggenc]]

'''Decoders'''

* [[ogg123]] for Unix systems (GPL), a very simple to use command-line player.
* [http://qtcomponents.sourceforge.net/ QuickTime Component] (Allows playback in [[QuickTime]]/[[iTunes]])
* [http://corevorbis.corecodec.org/ CoreVorbis] (DirectShow)
* [http://www.illiminable.com/ogg/ illiminable Ogg Directshow Filters] (Also plays Speex, Theora and FLAC)

=Hardware=
The following list contains some players that support Vorbis playback.
* [[iRiver H-Series]]
* [[Rio Karma]]
* [[IAudio M3]]
* [[Neuros]]

=External links=
The following links contain information surrounding the Ogg Vorbis codec that can be found on Hydrogenaudio and elsewhere throughtout the web.
* [[Ogg]] (Container)
* [http://en.wikipedia.org/wiki/Vorbis Ogg Vorbis at Wikipedia.]
* [http://www.audiocoding.com/modules/wiki/?page=Ogg+Vorbis Ogg Vorbis at AudioCoding]
* [http://www.rarewares.org/ogg.html Ogg Vorbis binaries at Rarewares. ]
* [http://www.hydrogenaudio.org/show.php/showtopic/13531 Discussion of Vorbis' legal status]
* [http://www.hydrogenaudio.org/forums/index.php?showtopic=15049 Recommended settings thread for encoding with Vorbis.]
* [http://www.geocities.jp/aoyoume/aotuv/ Aoyumi homepage tuned versions of Vorbis 1.1 encoder and current beta binaries.]
* [http://homepage3.nifty.com/blacksword/index_e.htm Archer homepage optimized versions of AoTuV Beta 3 Vorbis encoder and SSE optmizations. ]
* [http://www.xiph.org Xiph.org Foundation]
* [http://wiki.xiph.org/index.php/Bounties Xiph.org Vorbis bounties]

Vorbis

2005-04-19T20:00:34Z

24.147.201.151: /* Cons */

=Introduction=
'''Ogg Vorbis''' ([http://www.vorbis.com www.vorbis.com]) is a fully open, non-proprietary, patent-free (subject to [http://www.hydrogenaudio.org/forums/index.php?showtopic=13531 speculation]), and royalty-free, general-purpose compressed audio format for mid to high quality (8khz-48.0kHz, 16+ bit, polyphonic) audio and music at fixed and variable bitrates from 16 to >256 kbps/channel. This places vorbis in the same competitive class as audio representations such as MPEG-4 ([[AAC]]), and similar to, but higher performance [[MP3]], twinvq ([[VQF]]), [[WMA]] and [[PAC]].

Vorbis is the first of a planned family of Ogg multimedia coding formats being developed as part of Xiph.org's ogg multimedia project.

Informal listening test suggests Vorbis to be comparable to MPEG-4 [[AAC]] at most bitrates and [[MPC]] at 128 kbps. Transparency is generally reached at about 150-170 kbps (-q 5) (with some exceptions). The encoder is reasonably young and unoptimized, so further improvements can be expected.

Unfortunately, Xiph.org has failed to improve Vorbis at a steady rate since its initial 1.0 release in July 2002 (due to other developement projects and time constraints). Since then development has been lead by other coders such as Garf and Aoyumi. Aoyumi's AoTuV series of encoders was incorporated into the September 2004 release of 1.1, which brought about the first quality improvements across the board for 2 years.

==Pros==
* Free (as in speech), Open Source and claimed to be patent free
* Good all-round performance (>48 kbps - a leading codec at [http://www.rjamorim.com/test/multiformat128/results.html 128 kbps])
* Well written [http://www.xiph.org/ogg/vorbis/docs.html specs]
* Several portable [http://wiki.hydrogenaudio.org/index.php?title=Ogg_Vorbis#Hardware hardware players]
* Suitable for internet-streaming (via [http://www.icecast.org/ Icecast])
* Fully [[gapless]] playback

==Cons==
* Limited official development (Third-party developement is always encouraged)
* Current implementations are more computationally intensive to encode and decode than MP3 (Vorbis 2.0 seeks to overcome this limitations by slimlining the decoder)
* Quality at low bitrates could benefit from further tuning

=Technologies used in compression=
* Advanced psymodel (based upon ATH model)
* Coupled stereo modes ([http://us.xiph.org/ogg/vorbis/doc/stereo.html point/phase stereo] and lossless)
* [[Huffman coding]]
* Vector quantization
* Modified discrete cosine transform ([[MDCT]])
* Multiple block sizes for window switching

=Software=
'''Encoders'''
* [[oggenc]]

'''Decoders'''

* [[ogg123]] for Unix systems (GPL), a very simple to use command-line player.
* [http://qtcomponents.sourceforge.net/ QuickTime Component] (Allows playback in [[QuickTime]]/[[iTunes]])
* [http://corevorbis.corecodec.org/ CoreVorbis] (DirectShow)
* [http://www.illiminable.com/ogg/ illiminable Ogg Directshow Filters] (Also plays Speex, Theora and FLAC)

=Hardware=
The following list contains some players that support Vorbis playback.
* [[iRiver H-Series]]
* [[Rio Karma]]
* [[IAudio M3]]
* [[Neuros]]

=External links=
The following links contain information surrounding the Ogg Vorbis codec that can be found on Hydrogenaudio and elsewhere throughtout the web.
* [[Ogg]] (Container)
* [http://en.wikipedia.org/wiki/Vorbis Ogg Vorbis at Wikipedia.]
* [http://www.audiocoding.com/modules/wiki/?page=Ogg+Vorbis Ogg Vorbis at AudioCoding]
* [http://www.rarewares.org/ogg.html Ogg Vorbis binaries at Rarewares. ]
* [http://www.hydrogenaudio.org/show.php/showtopic/13531 Discussion of Vorbis' legal status]
* [http://www.hydrogenaudio.org/forums/index.php?showtopic=15049 Recommended settings thread for encoding with Vorbis.]
* [http://www.geocities.jp/aoyoume/aotuv/ Aoyumi homepage tuned versions of Vorbis 1.1 encoder and current beta binaries.]
* [http://homepage3.nifty.com/blacksword/index_e.htm Archer homepage optimized versions of AoTuV Beta 3 Vorbis encoder and SSE optmizations. ]
* [http://www.xiph.org Xiph.org Foundation]
* [http://wiki.xiph.org/index.php/Bounties Xiph.org Vorbis bounties]

Vorbis

2005-04-19T19:48:52Z

24.147.201.151: /* External links */

=Introduction=
'''Ogg Vorbis''' ([http://www.vorbis.com www.vorbis.com]) is a fully open, non-proprietary, patent-free (subject to [http://www.hydrogenaudio.org/forums/index.php?showtopic=13531 speculation]), and royalty-free, general-purpose compressed audio format for mid to high quality (8khz-48.0kHz, 16+ bit, polyphonic) audio and music at fixed and variable bitrates from 16 to >256 kbps/channel. This places vorbis in the same competitive class as audio representations such as MPEG-4 ([[AAC]]), and similar to, but higher performance [[MP3]], twinvq ([[VQF]]), [[WMA]] and [[PAC]].

Vorbis is the first of a planned family of Ogg multimedia coding formats being developed as part of Xiph.org's ogg multimedia project.

Informal listening test suggests Vorbis to be comparable to MPEG-4 [[AAC]] at most bitrates and [[MPC]] at 128 kbps. Transparency is generally reached at about 150-170 kbps (-q 5) (with some exceptions). The encoder is reasonably young and unoptimized, so further improvements can be expected.

Unfortunately, Xiph.org has failed to improve Vorbis at a steady rate since its initial 1.0 release in July 2002 (due to other developement projects and time constraints). Since then development has been lead by other coders such as Garf and Aoyumi. Aoyumi's AoTuV series of encoders was incorporated into the September 2004 release of 1.1, which brought about the first quality improvements across the board for 2 years.

==Pros==
* Free (as in speech), Open Source and claimed to be patent free
* Good all-round performance (>48 kbps - a leading codec at [http://www.rjamorim.com/test/multiformat128/results.html 128 kbps])
* Well written [http://www.xiph.org/ogg/vorbis/docs.html specs]
* Several portable [http://wiki.hydrogenaudio.org/index.php?title=Ogg_Vorbis#Hardware hardware players]
* Suitable for internet-streaming (via [http://www.icecast.org/ Icecast])
* Fully [[gapless]] playback

==Cons==
* Limited official development
* Current implementations are more computationally intensive to encode and decode than MP3 (Vorbis 2.0 seeks to overcome this limitations by slimlining the decoder)
* Quality at low bitrates could benefit from further tuning

=Technologies used in compression=
* Advanced psymodel (based upon ATH model)
* Coupled stereo modes ([http://us.xiph.org/ogg/vorbis/doc/stereo.html point/phase stereo] and lossless)
* [[Huffman coding]]
* Vector quantization
* Modified discrete cosine transform ([[MDCT]])
* Multiple block sizes for window switching

=Software=
'''Encoders'''
* [[oggenc]]

'''Decoders'''

* [[ogg123]] for Unix systems (GPL), a very simple to use command-line player.
* [http://qtcomponents.sourceforge.net/ QuickTime Component] (Allows playback in [[QuickTime]]/[[iTunes]])
* [http://corevorbis.corecodec.org/ CoreVorbis] (DirectShow)
* [http://www.illiminable.com/ogg/ illiminable Ogg Directshow Filters] (Also plays Speex, Theora and FLAC)

=Hardware=
The following list contains some players that support Vorbis playback.
* [[iRiver H-Series]]
* [[Rio Karma]]
* [[IAudio M3]]
* [[Neuros]]

=External links=
The following links contain information surrounding the Ogg Vorbis codec that can be found on Hydrogenaudio and elsewhere throughtout the web.
* [[Ogg]] (Container)
* [http://en.wikipedia.org/wiki/Vorbis Ogg Vorbis at Wikipedia.]
* [http://www.audiocoding.com/modules/wiki/?page=Ogg+Vorbis Ogg Vorbis at AudioCoding]
* [http://www.rarewares.org/ogg.html Ogg Vorbis binaries at Rarewares. ]
* [http://www.hydrogenaudio.org/show.php/showtopic/13531 Discussion of Vorbis' legal status]
* [http://www.hydrogenaudio.org/forums/index.php?showtopic=15049 Recommended settings thread for encoding with Vorbis.]
* [http://www.geocities.jp/aoyoume/aotuv/ Aoyumi homepage tuned versions of Vorbis 1.1 encoder and current beta binaries.]
* [http://homepage3.nifty.com/blacksword/index_e.htm Archer homepage optimized versions of AoTuV Beta 3 Vorbis encoder and SSE optmizations. ]
* [http://www.xiph.org Xiph.org Foundation]
* [http://wiki.xiph.org/index.php/Bounties Xiph.org Vorbis bounties]

Vorbis

2005-04-19T19:47:10Z

24.147.201.151: /* External links */

=Introduction=
'''Ogg Vorbis''' ([http://www.vorbis.com www.vorbis.com]) is a fully open, non-proprietary, patent-free (subject to [http://www.hydrogenaudio.org/forums/index.php?showtopic=13531 speculation]), and royalty-free, general-purpose compressed audio format for mid to high quality (8khz-48.0kHz, 16+ bit, polyphonic) audio and music at fixed and variable bitrates from 16 to >256 kbps/channel. This places vorbis in the same competitive class as audio representations such as MPEG-4 ([[AAC]]), and similar to, but higher performance [[MP3]], twinvq ([[VQF]]), [[WMA]] and [[PAC]].

Vorbis is the first of a planned family of Ogg multimedia coding formats being developed as part of Xiph.org's ogg multimedia project.

Informal listening test suggests Vorbis to be comparable to MPEG-4 [[AAC]] at most bitrates and [[MPC]] at 128 kbps. Transparency is generally reached at about 150-170 kbps (-q 5) (with some exceptions). The encoder is reasonably young and unoptimized, so further improvements can be expected.

Unfortunately, Xiph.org has failed to improve Vorbis at a steady rate since its initial 1.0 release in July 2002 (due to other developement projects and time constraints). Since then development has been lead by other coders such as Garf and Aoyumi. Aoyumi's AoTuV series of encoders was incorporated into the September 2004 release of 1.1, which brought about the first quality improvements across the board for 2 years.

==Pros==
* Free (as in speech), Open Source and claimed to be patent free
* Good all-round performance (>48 kbps - a leading codec at [http://www.rjamorim.com/test/multiformat128/results.html 128 kbps])
* Well written [http://www.xiph.org/ogg/vorbis/docs.html specs]
* Several portable [http://wiki.hydrogenaudio.org/index.php?title=Ogg_Vorbis#Hardware hardware players]
* Suitable for internet-streaming (via [http://www.icecast.org/ Icecast])
* Fully [[gapless]] playback

==Cons==
* Limited official development
* Current implementations are more computationally intensive to encode and decode than MP3 (Vorbis 2.0 seeks to overcome this limitations by slimlining the decoder)
* Quality at low bitrates could benefit from further tuning

=Technologies used in compression=
* Advanced psymodel (based upon ATH model)
* Coupled stereo modes ([http://us.xiph.org/ogg/vorbis/doc/stereo.html point/phase stereo] and lossless)
* [[Huffman coding]]
* Vector quantization
* Modified discrete cosine transform ([[MDCT]])
* Multiple block sizes for window switching

=Software=
'''Encoders'''
* [[oggenc]]

'''Decoders'''

* [[ogg123]] for Unix systems (GPL), a very simple to use command-line player.
* [http://qtcomponents.sourceforge.net/ QuickTime Component] (Allows playback in [[QuickTime]]/[[iTunes]])
* [http://corevorbis.corecodec.org/ CoreVorbis] (DirectShow)
* [http://www.illiminable.com/ogg/ illiminable Ogg Directshow Filters] (Also plays Speex, Theora and FLAC)

=Hardware=
The following list contains some players that support Vorbis playback.
* [[iRiver H-Series]]
* [[Rio Karma]]
* [[IAudio M3]]
* [[Neuros]]

=External links=
The following links contain information surrounding the Ogg Vorbis codec that can be found on Hydrogenaudio and elsewhere throughtout the web.
* [[Ogg]] (Container)
* [http://en.wikipedia.org/wiki/Vorbis Ogg Vorbis at Wikipedia.]
* [http://www.audiocoding.com/modules/wiki/?page=Ogg+Vorbis Ogg Vorbis at AudioCoding]
* [http://www.rarewares.org/ogg.html Ogg Vorbis binaries at Rarewares. ]
* [http://www.hydrogenaudio.org/show.php/showtopic/13531 Discussion of Vorbis' legal status]
* [http://www.hydrogenaudio.org/forums/index.php?showtopic=15049 Recommended settings thread for encoding with Vorbis.]
* [http://www.geocities.jp/aoyoume/aotuv/ Aoyumi homepage tuned versions of Vorbis 1.1 encoder and beta binaries.]
* [http://homepage3.nifty.com/blacksword/index_e.htm Archer homepage optimized versions of AoTuV Beta 3 Vorbis encoder and SSE optmizations. ]
* [http://www.xiph.org Xiph.org Foundation]
* [http://wiki.xiph.org/index.php/Bounties Xiph.org Vorbis bounties]

User:HotshotGG

2005-04-19T19:40:23Z

24.147.201.151:

I live in Boston, Massachusetts I am 18 years old.

I am going to be a college student hopefully in the Fall of 2005 ;-D (Computer Science Major?). I enjoy hanging out HA learning something new and spreading knowledge. I also enjoy help editing the wiki whenever I have spare time.

'''My interests are:'''

* Ogg Vorbis and Digital Audio Compreession.
* MIDI Applications and Sound Synthesis
* Psychoacoustics and Audio Signal Processing
* Music
* Classical
** Electronic
** Ambient
** Psybient
** Ambient Goa
** Downtempo
** Chillout
** Trip Hop
** IDM/Braindance
** Big Beat
*** Electronic Dance Music
*** Psytrance
*** Progressive Trance
*** Progressive House/Breaks
*** New Skool Breaks/UK Breaks
*** Chicago House/Deep House
*** Electroclash
** alternative
** jazz
** blues
** new wave
** new age
** hip hop, etc.
* Reading
* Statistics
* Science Fiction
* Etc

User:HotshotGG

2005-04-19T19:26:39Z

24.147.201.151:

I live in Boston, Massachusetts I am 18 years old.

I am going to be a college student hopefully in the Fall of 2005 ;-D (Computer Science Major?). I enjoy hanging out HA learning something new and spreading knowledge. I also enjoy help editing the wiki whenever I have spare time.

'''My interests are:'''

* Ogg Vorbis and Digital Audio Compreession.
* MIDI Applications and Sound Synthesis
* Psychoacoustics and Audio Signal Processing
* Music
* Classical
** Electronic
** Ambient
** Psybient
** Ambient Goa
** Downtempo
** Chillout
** Trip Hop
** IDM/Braindance
** Big Beat
*** Electronic Dance Music
*** Psytrance
*** Progressive Trance
*** Progressive House/Breaks
*** New Skool Breaks
*** Chicago House/Deep House
*** Electroclash
** alternative
** jazz
** blues
** new wave
** new age
** hip hop, etc.
* Reading
* Statistics
* Science Fiction
* Etc

Vorbis

2005-04-19T17:30:50Z

24.147.201.151: /* Techniques used in compression */

=Introduction=
'''Ogg Vorbis''' ([http://www.vorbis.com www.vorbis.com]) is a fully open, non-proprietary, patent-free (subject to [http://www.hydrogenaudio.org/forums/index.php?showtopic=13531 speculation]), and royalty-free, general-purpose compressed audio format for mid to high quality (8khz-48.0kHz, 16+ bit, polyphonic) audio and music at fixed and variable bitrates from 16 to >256 kbps/channel. This places vorbis in the same competitive class as audio representations such as MPEG-4 ([[AAC]]), and similar to, but higher performance [[MP3]], twinvq ([[VQF]]), [[WMA]] and [[PAC]].

Vorbis is the first of a planned family of Ogg multimedia coding formats being developed as part of Xiph.org's ogg multimedia project.

Informal listening test suggests Vorbis to be comparable to MPEG-4 [[AAC]] at most bitrates and [[MPC]] at 128 kbps. Transparency is generally reached at about 150-170 kbps (-q 5) (with some exceptions). The encoder is reasonably young and unoptimized, so further improvements can be expected.

Unfortunately, Xiph.org has failed to improve Vorbis at a steady rate since its initial 1.0 release in July 2002 (due to other developement projects and time constraints). Since then development has been lead by other coders such as Garf and Aoyumi. Aoyumi's AoTuV series of encoders was incorporated into the September 2004 release of 1.1, which brought about the first quality improvements across the board for 2 years.

==Pros==
* Free (as in speech), Open Source and claimed to be patent free
* Good all-round performance (>48 kbps - a leading codec at [http://www.rjamorim.com/test/multiformat128/results.html 128 kbps])
* Well written [http://www.xiph.org/ogg/vorbis/docs.html specs]
* Several portable [http://wiki.hydrogenaudio.org/index.php?title=Ogg_Vorbis#Hardware hardware players]
* Suitable for internet-streaming (via [http://www.icecast.org/ Icecast])
* Fully [[gapless]] playback

==Cons==
* Limited official development
* Current implementations are more computationally intensive to encode and decode than MP3 (Vorbis 2.0 seeks to overcome this limitations by slimlining the decoder)
* Quality at low bitrates could benefit from further tuning

=Technologies used in compression=
* Advanced psymodel (based upon ATH model)
* Coupled stereo modes ([http://us.xiph.org/ogg/vorbis/doc/stereo.html point/phase stereo] and lossless)
* [[Huffman coding]]
* Vector quantization
* Modified discrete cosine transform ([[MDCT]])
* Multiple block sizes for window switching

=Software=
'''Encoders'''
* [[oggenc]]

'''Decoders'''

* [[ogg123]] for Unix systems (GPL), a very simple to use command-line player.
* [http://qtcomponents.sourceforge.net/ QuickTime Component] (Allows playback in [[QuickTime]]/[[iTunes]])
* [http://corevorbis.corecodec.org/ CoreVorbis] (DirectShow)
* [http://www.illiminable.com/ogg/ illiminable Ogg Directshow Filters] (Also plays Speex, Theora and FLAC)

=Hardware=
The following list contains some players that support Vorbis playback.
* [[iRiver H-Series]]
* [[Rio Karma]]
* [[IAudio M3]]
* [[Neuros]]

=External links=
The following links contain information surrounding the Ogg Vorbis codec that can be found on Hydrogenaudio and elsewhere throughtout the web.
* [[Ogg]] (Container)
* [http://en.wikipedia.org/wiki/Vorbis Ogg Vorbis at Wikipedia.]
* [http://www.audiocoding.com/modules/wiki/?page=Ogg+Vorbis Ogg Vorbis at AudioCoding]
* [http://www.rarewares.org/ogg.html Ogg Vorbis binaries at Rarewares. ]
* [http://www.hydrogenaudio.org/show.php/showtopic/13531 Discussion of Vorbis' legal status]
* [http://www.hydrogenaudio.org/forums/index.php?showtopic=15049 Recommended settings thread for encoding with Vorbis.]
* [http://www.geocities.jp/aoyoume/aotuv/ Aoyumi homepage tuned versions of Vorbis 1.1 encoder and beta binaries.]
* [http://homepage3.nifty.com/blacksword/index_e.htm Archer homepage optimized versions of AoTuV Beta 3 Vorbis encoder and SSE optmizations. ]
* [http://www.xiph.org Xiph.org Foundation]
* [http://wiki.xiph.org/index.php/Bounties Xiph.org Ogg Vorbis bounties]

Vorbis

2005-04-19T17:29:06Z

24.147.201.151: /* Introduction */

=Introduction=
'''Ogg Vorbis''' ([http://www.vorbis.com www.vorbis.com]) is a fully open, non-proprietary, patent-free (subject to [http://www.hydrogenaudio.org/forums/index.php?showtopic=13531 speculation]), and royalty-free, general-purpose compressed audio format for mid to high quality (8khz-48.0kHz, 16+ bit, polyphonic) audio and music at fixed and variable bitrates from 16 to >256 kbps/channel. This places vorbis in the same competitive class as audio representations such as MPEG-4 ([[AAC]]), and similar to, but higher performance [[MP3]], twinvq ([[VQF]]), [[WMA]] and [[PAC]].

Vorbis is the first of a planned family of Ogg multimedia coding formats being developed as part of Xiph.org's ogg multimedia project.

Informal listening test suggests Vorbis to be comparable to MPEG-4 [[AAC]] at most bitrates and [[MPC]] at 128 kbps. Transparency is generally reached at about 150-170 kbps (-q 5) (with some exceptions). The encoder is reasonably young and unoptimized, so further improvements can be expected.

Unfortunately, Xiph.org has failed to improve Vorbis at a steady rate since its initial 1.0 release in July 2002 (due to other developement projects and time constraints). Since then development has been lead by other coders such as Garf and Aoyumi. Aoyumi's AoTuV series of encoders was incorporated into the September 2004 release of 1.1, which brought about the first quality improvements across the board for 2 years.

==Pros==
* Free (as in speech), Open Source and claimed to be patent free
* Good all-round performance (>48 kbps - a leading codec at [http://www.rjamorim.com/test/multiformat128/results.html 128 kbps])
* Well written [http://www.xiph.org/ogg/vorbis/docs.html specs]
* Several portable [http://wiki.hydrogenaudio.org/index.php?title=Ogg_Vorbis#Hardware hardware players]
* Suitable for internet-streaming (via [http://www.icecast.org/ Icecast])
* Fully [[gapless]] playback

==Cons==
* Limited official development
* Current implementations are more computationally intensive to encode and decode than MP3 (Vorbis 2.0 seeks to overcome this limitations by slimlining the decoder)
* Quality at low bitrates could benefit from further tuning

=Technologies used in compression=
* Advanced psymodel (based upon ATH model)
* Coupled stereo modes (point/phase stereo and [[lossless]])
* [[Huffman coding]]
* Vector quantization
* Modified discrete cosine transform ([[MDCT]])
* Multiple block sizes for window switching

=Software=
'''Encoders'''
* [[oggenc]]

'''Decoders'''

* [[ogg123]] for Unix systems (GPL), a very simple to use command-line player.
* [http://qtcomponents.sourceforge.net/ QuickTime Component] (Allows playback in [[QuickTime]]/[[iTunes]])
* [http://corevorbis.corecodec.org/ CoreVorbis] (DirectShow)
* [http://www.illiminable.com/ogg/ illiminable Ogg Directshow Filters] (Also plays Speex, Theora and FLAC)

=Hardware=
The following list contains some players that support Vorbis playback.
* [[iRiver H-Series]]
* [[Rio Karma]]
* [[IAudio M3]]
* [[Neuros]]

=External links=
The following links contain information surrounding the Ogg Vorbis codec that can be found on Hydrogenaudio and elsewhere throughtout the web.
* [[Ogg]] (Container)
* [http://en.wikipedia.org/wiki/Vorbis Ogg Vorbis at Wikipedia.]
* [http://www.audiocoding.com/modules/wiki/?page=Ogg+Vorbis Ogg Vorbis at AudioCoding]
* [http://www.rarewares.org/ogg.html Ogg Vorbis binaries at Rarewares. ]
* [http://www.hydrogenaudio.org/show.php/showtopic/13531 Discussion of Vorbis' legal status]
* [http://www.hydrogenaudio.org/forums/index.php?showtopic=15049 Recommended settings thread for encoding with Vorbis.]
* [http://www.geocities.jp/aoyoume/aotuv/ Aoyumi homepage tuned versions of Vorbis 1.1 encoder and beta binaries.]
* [http://homepage3.nifty.com/blacksword/index_e.htm Archer homepage optimized versions of AoTuV Beta 3 Vorbis encoder and SSE optmizations. ]
* [http://www.xiph.org Xiph.org Foundation]
* [http://wiki.xiph.org/index.php/Bounties Xiph.org Ogg Vorbis bounties]

Vorbis

2005-04-19T17:20:18Z

24.147.201.151: /* Cons */

=Introduction=
'''Ogg Vorbis''' ([http://www.vorbis.com www.vorbis.com]) is a fully open, non-proprietary, patent-free (subject to [http://www.hydrogenaudio.org/forums/index.php?showtopic=13531 speculation]), and royalty-free, general-purpose compressed audio format for mid to high quality (8khz-48.0kHz, 16+ bit, polyphonic) audio and music at fixed and variable bitrates from 16 to >256 kbps/channel. This places vorbis in the same competitive class as audio representations such as MPEG-4 ([[AAC]]), and similar to, but higher performance [[MP3]], twinvq ([[VQF]]), [[WMA]] and [[PAC]].

Vorbis is the first of a planned family of Ogg multimedia coding formats being developed as part of Xiph.org's ogg multimedia project.

Informal listening test suggests Vorbis to be comparable to MPEG-4 [[AAC]] at most bitrates and [[MPC]] at 128 kbps. Transparency is generally reached at about 150-170 kbps -q 5 (with some exceptions). The encoder is reasonably young and unoptimized, so further improvements can be expected.

Unfortunately, Xiph.org has failed to improve Vorbis at a steady rate since its initial 1.0 release in July 2002 (due to other developement projects and time constraints). Since then development has been lead by other coders such as Garf and Aoyumi. Aoyumi's AoTuV series of encoders was incorporated into the September 2004 release of 1.1, which brought about the first quality improvements across the board for 2 years.

==Pros==
* Free (as in speech), Open Source and claimed to be patent free
* Good all-round performance (>48 kbps - a leading codec at [http://www.rjamorim.com/test/multiformat128/results.html 128 kbps])
* Well written [http://www.xiph.org/ogg/vorbis/docs.html specs]
* Several portable [http://wiki.hydrogenaudio.org/index.php?title=Ogg_Vorbis#Hardware hardware players]
* Suitable for internet-streaming (via [http://www.icecast.org/ Icecast])
* Fully [[gapless]] playback

==Cons==
* Limited official development
* Current implementations are more computationally intensive to encode and decode than MP3 (Vorbis 2.0 seeks to overcome this limitations by slimlining the decoder)
* Quality at low bitrates could benefit from further tuning

=Technologies used in compression=
* Advanced psymodel (based upon ATH model)
* Coupled stereo modes (point/phase stereo and [[lossless]])
* [[Huffman coding]]
* Vector quantization
* Modified discrete cosine transform ([[MDCT]])
* Multiple block sizes for window switching

=Software=
'''Encoders'''
* [[oggenc]]

'''Decoders'''

* [[ogg123]] for Unix systems (GPL), a very simple to use command-line player.
* [http://qtcomponents.sourceforge.net/ QuickTime Component] (Allows playback in [[QuickTime]]/[[iTunes]])
* [http://corevorbis.corecodec.org/ CoreVorbis] (DirectShow)
* [http://www.illiminable.com/ogg/ illiminable Ogg Directshow Filters] (Also plays Speex, Theora and FLAC)

=Hardware=
The following list contains some players that support Vorbis playback.
* [[iRiver H-Series]]
* [[Rio Karma]]
* [[IAudio M3]]
* [[Neuros]]

=External links=
The following links contain information surrounding the Ogg Vorbis codec that can be found on Hydrogenaudio and elsewhere throughtout the web.
* [[Ogg]] (Container)
* [http://en.wikipedia.org/wiki/Vorbis Ogg Vorbis at Wikipedia.]
* [http://www.audiocoding.com/modules/wiki/?page=Ogg+Vorbis Ogg Vorbis at AudioCoding]
* [http://www.rarewares.org/ogg.html Ogg Vorbis binaries at Rarewares. ]
* [http://www.hydrogenaudio.org/show.php/showtopic/13531 Discussion of Vorbis' legal status]
* [http://www.hydrogenaudio.org/forums/index.php?showtopic=15049 Recommended settings thread for encoding with Vorbis.]
* [http://www.geocities.jp/aoyoume/aotuv/ Aoyumi homepage tuned versions of Vorbis 1.1 encoder and beta binaries.]
* [http://homepage3.nifty.com/blacksword/index_e.htm Archer homepage optimized versions of AoTuV Beta 3 Vorbis encoder and SSE optmizations. ]
* [http://www.xiph.org Xiph.org Foundation]
* [http://wiki.xiph.org/index.php/Bounties Xiph.org Ogg Vorbis bounties]

Glossary Of Audio Terms

2005-04-19T03:38:08Z

24.147.201.151: /* T */

==A==

* [[AAC]]
* [[ABR]]
* [[ABX]]/[[ABX|ABX testing]]
* [[AC3]]
* [[Aliasing]]
* [[AltPresets]]
* [[Amplitude]]
* [[APE]] ([[Monkey's Audio]])
* [[APE Tags]]
* [[Artifact]]/[[Artifact|Distortion]]
* [[ATH]] (Absolute Threshold of Hearing)

==B==

* [[Bandpass filter]]
* [[Bandstop filter]]/[[Bandstop filter|Band reject]]
* [[Bandwidth]]
* [[Bark]]
* [[Bit reservoir]]
* [[Bitrate]]
* [[Bit depth|Bits per sample]] / [[Bit depth]]
* [[Blind test]]
* [[Block switching]]

==C==

* [[CBR]]/[[Constant bitrate]]/[[CBR|Constant bitrate coding]]
* [[Channel coupling]]
* [[Clipping]]
* [[Codec]]
* [[Container format]]
* [[Critical band]]

==D==

* [[dB]]/[[dB|Decibel]]
* [[DC coefficient]]
* [[DCT]]
* [[DCT coefficient]]
* [[Digital Radio Mondiale|DRM]] (Digital Radio Mondiale)
* [[Digital Rights Management|DRM]] (Digital Rights Management)
* [[DSP]]
* [[DTS]]

==F==

* [[FFT]]
* [[Filterbank]]
* [[FIR filter]] (Finite Impulse Response Filters)
* [[FLAC]]
* [[Frequency]]
* [[Frequency domain]]

==H==

* [[Harmonics]]
* [[Highpass]]
* [[Huffman coding]]

==I==

* [[ID3]]
* [[IIR filter]] (Infinite Impulse Response Filters)
* [[Impulse]]
* [[Intensity stereo]]
* [[Inverse mix]]

==J==

* [[Joint stereo]]

==L==

* [[LFE]] (Low Frequency Extension)
* [[LPAC]]
* [[Long block]]
* [[Lossless]]
* [[Lossy]]
* [[Lowpass]]
* [[ATH|LTQ]] (Level of Threshold in Quiet)

==M==

* [[Masking]]
* [[MDCT]]
* [[Metadata]]
* [[Mid-side stereo]]
* [[Monkey's Audio]]
* [[MP3]] (MPEG 1 Audio Layer 3)
* [[MP3Pro]]
* [[Musepack|MPC]]/[[Musepack|MP+]]/[[Musepack]]/[[Musepack|Mpeg Plus]]
* [[Mpeg]] (Motion Picture Expert Group)
* [[MPEG-4]]
* [[Multichannel]]

==N==

* [[Neural network]]
* [[Noise shaping]]
* [[Noise like signals]]
* [[Notch filter]]
* [[Nyquist rate]]/[[Nyquist frequency]]/[[Nyquist sampling theorem]]

==O==

* [[Ogg]]
* [[Ogg Vorbis]]
* [[OptimFROG]]

==P==

* [[Parametric Stereo]]/[[PS]]
* [[PCM]]
* [[Pre echo]]/[[Pre echo|Post echo]]
* [[Psychoacoustic]]
* [[Psychoacoustic model]]

==Q==

* [[Quantize]]/[[Quantizer]]/[[Quantization]]
* [[Quantization noise]]

==R==

* [[Range coding]]
* [[Rice coding]]
* [[Ringing]]

==S==

* [[Sampling rate]]/[[Sampling rate|Sample rate]]/[[Sampling rate|Sampling frequency]]
* [[SBR]] (Spectral Band Replication)
* [[Scale factor]]/[[Scale factor|Scale factor band]]
* [[Short block]]
* [[Shorten]] ([[SHN]])
* [[Sigma Delta Modulation]]
* [[Spectrogram]]
* [[Streaming]]
* [[Subband]]
* [[SZIP]]

==T==

* [[TTA]] '''T'''rue '''T'''ap '''A'''udio
* [[Temporal accuracy]]
* [[Temporal smearing]]
* [[Time domain]]
* [[Tonality]]/[[Tonality|Tonal signals]]/[[Tonality|Tonality estimation]]
* [[Transcoding]]
* [[Transform]]
* [[Transient]]
* [[Transient smearing]]
* [[Transparency]]
* [[Tremor]]

==V==

* [[VBR]] (Variable Bitrate/Variable Bitrate Coding)
* [[Vector Quantization]]

==W==

* [[WAV]]
* [[Wavelet]]
* [[WMA]]

Vorbis

2005-04-19T00:41:02Z

24.147.201.151: /* Introduction */

=Introduction=
'''Ogg Vorbis''' ([http://www.vorbis.com www.vorbis.com]) is a fully open, non-proprietary, patent-free (subject to [http://www.hydrogenaudio.org/forums/index.php?showtopic=13531 speculation]), and royalty-free, general-purpose compressed audio format for mid to high quality (8khz-48.0kHz, 16+ bit, polyphonic) audio and music at fixed and variable bitrates from 16 to >256 kbps/channel. This places vorbis in the same competitive class as audio representations such as MPEG-4 ([[AAC]]), and similar to, but higher performance [[MP3]], twinvq ([[VQF]]), [[WMA]] and [[PAC]].

Vorbis is the first of a planned family of Ogg multimedia coding formats being developed as part of Xiph.org's ogg multimedia project.

Informal listening test suggest Vorbis to be comparable to MPEG-4 [[AAC]] at most bitrates and [[MPC]] at 128 kbps. Transparency is generally reached at about -q 5 150-170 kbps (with some exceptions). The encoder is reasonably young and unoptimized, so further improvements can be expected.

Unfortunately, Xiph.org has failed to improve Vorbis at a steady rate since its initial 1.0 release in July 2002 (due to other developement projects and time constraints). Since then development has been lead by other coders such as Garf and Aoyumi. Aoyumi's AoTuV series of encoders was incorporated into the September 2004 release of 1.1, which brought about the first quality improvements across the board for 2 years.

==Pros==
* Free (as in speech), Open Source and claimed to be patent free
* Good all-round performance (>48 kbps - a leading codec at 128 kbps)
* Well written [http://www.xiph.org/ogg/vorbis/docs.html specs]
* Several portable hardware players
* Suitable for internet-streaming (via Icecast)
* Fully [[gapless]] playback

==Cons==
* Limited official development
* Current implementations are more computationally intensive to encode and decode than MP3
* Quality at high bitrates could benefit from further tuning

=Technologies used in compression=
* Advanced psymodel (based upon ATH model)
* Coupled stereo modes (point/phase stereo and [[lossless]])
* [[Huffman coding]]
* Vector quantization
* Modified discrete cosine transform ([[MDCT]])
* Multiple block sizes for window switching

=Software=
'''Encoders'''
* [[oggenc]]

'''Decoders'''

* [[ogg123]] for Unix systems (GPL), a very simple to use command-line player.
* [http://qtcomponents.sourceforge.net/ QuickTime Component] (Allows playback in [[QuickTime]]/[[iTunes]])
* [http://corevorbis.corecodec.org/ CoreVorbis] (DirectShow)
* [http://www.illiminable.com/ogg/ illiminable Ogg Directshow Filters] (Also plays Speex, Theora and FLAC)

=Hardware=
The following list contains some players that support Vorbis playback.
* [[iRiver H-Series]]
* [[Rio Karma]]
* [[IAudio M3]]
* [[Neuros]]

=External links=
The following links contain information surrounding the Ogg Vorbis codec that can be found on Hydrogenaudio and elsewhere throughtout the web.
* [[Ogg]] (Container)
* [http://en.wikipedia.org/wiki/Vorbis Ogg Vorbis at Wikipedia.]
* [http://www.audiocoding.com/modules/wiki/?page=Ogg+Vorbis Ogg Vorbis at AudioCoding]
* [http://www.rarewares.org/ogg.html Ogg Vorbis binaries at Rarewares. ]
* [http://www.hydrogenaudio.org/show.php/showtopic/13531 Discussion of Vorbis' legal status]
* [http://www.hydrogenaudio.org/forums/index.php?showtopic=15049 Recommended settings thread for encoding with Vorbis.]
* [http://www.geocities.jp/aoyoume/aotuv/ Aoyume homepage tuned versions of Vorbis 1.1 encoder and beta binaries.]
* [http://homepage3.nifty.com/blacksword/index_e.htm Archer homepage optimized versions of AoTuV Beta 3 Vorbis encoder and SSE optmizations. ]
* [http://www.xiph.org Xiph.org Foundation]
* [http://wiki.xiph.org/index.php/Bounties Xiph.org Ogg Vorbis bounties]

Vorbis

2005-04-18T01:49:15Z

24.147.201.151: /* Additional reading */

=Introduction=
'''Ogg Vorbis''' ([http://www.vorbis.com www.vorbis.com]) is a fully open, non-proprietary, patent-free (subject to [http://www.hydrogenaudio.org/forums/index.php?showtopic=13531 speculation]), and royalty-free, general-purpose compressed audio format for mid to high quality (8khz-48.0kHz, 16+ bit, polyphonic) audio and music at fixed and variable bitrates from 16 to >256 kbps/channel. This places vorbis in the same competitive class as audio representations such as mpeg-4 ([[AAC]]), and similar to, but higher performance [[MP3]], twinvq ([[VQF]]), [[WMA]] and [[PAC]].

Vorbis is the first of a planned family of Ogg multimedia coding formats being developed as part of Xiph.org's ogg multimedia project.

Informal listening test suggest Vorbis to be comparable to mpeg-4 [[AAC]] at most bitrates and [[MPC]] at 128kbs. Transparency is generally reached at about 150-170kbps (with some exceptions). The encoder is reasonably young and unoptimized, so further improvements can be expected.

Unfortunately, Xiph.org has failed to improve Vorbis at a steady rate since its initial 1.0 release in July 2002. Since then development has been lead by other coders such as Garf and Aoyumi. Aoyumi's AoTuV series of encoders was incorporated into the September 2004 release of 1.1, which brought about the first quality improvements across the board for 2 years.

==Pros==
* Free (as in speech), Open Source and claimed to be patent free
* Good all-round performance (>48kbs - a leading codec at 128kbs)
* Well written [http://www.xiph.org/ogg/vorbis/docs.html specs]
* Several portable hardware players
* Suitable for internet-streaming (via Icecast)
* Fully [[gapless]] playback

==Cons==
* Limited official development
* Current implementations are more computationally intensive to encode and decode than MP3
* Quality at high bitrates could benefit from further tuning

=Techniques used in compression=
* Advanced psymodel
* Coupled stereo modes (Point/Phase Stereo and [[lossless]])
* [[Huffman coding]]
* Vector quantization
* Modified discrete cosine transform ([[MDCT]])
* Multiple block sizes for window switching

=Software=
'''Encoders'''
* [[oggenc]]

'''Decoders'''

* [http://qtcomponents.sourceforge.net/ QuickTime Component] (Allows playback in [[QuickTime]]/[[iTunes]])
* [http://corevorbis.corecodec.org/ CoreVorbis] (DirectShow)
* [http://www.illiminable.com/ogg/ illiminable Ogg Directshow Filters] (Also plays Speex, Theora and FLAC)

=Hardware=
The following list contains some players that support Vorbis playback.
* [[iRiver H-Series]]
* [[Rio Karma]]
* [[IAudio M3]]
* [[Neuros]]

=Additional reading=
* [[Ogg]] (Container)
* [http://www.audiocoding.com/modules/wiki/?page=Ogg+Vorbis Ogg Vorbis at AudioCoding]
* [http://www.hydrogenaudio.org/show.php/showtopic/13531 Discussion of Vorbis' legal status]
* [http://www.hydrogenaudio.org/forums/index.php?showtopic=15049 Recommended settings thread for encoding with Vorbis.]
* [http://www.xiph.org Xiph.org Foundation]

Vorbis

2005-04-18T01:42:14Z

24.147.201.151: /* Additional Reading */

=Introduction=
'''Ogg Vorbis''' ([http://www.vorbis.com www.vorbis.com]) is a fully open, non-proprietary, patent-free (subject to [http://www.hydrogenaudio.org/forums/index.php?showtopic=13531 speculation]), and royalty-free, general-purpose compressed audio format for mid to high quality (8khz-48.0kHz, 16+ bit, polyphonic) audio and music at fixed and variable bitrates from 16 to >256 kbps/channel. This places vorbis in the same competitive class as audio representations such as mpeg-4 ([[AAC]]), and similar to, but higher performance [[MP3]], twinvq ([[VQF]]), [[WMA]] and [[PAC]].

Vorbis is the first of a planned family of Ogg multimedia coding formats being developed as part of Xiph.org's ogg multimedia project.

Informal listening test suggest Vorbis to be comparable to mpeg-4 [[AAC]] at most bitrates and [[MPC]] at 128kbs. Transparency is generally reached at about 150-170kbps (with some exceptions). The encoder is reasonably young and unoptimized, so further improvements can be expected.

Unfortunately, Xiph.org has failed to improve Vorbis at a steady rate since its initial 1.0 release in July 2002. Since then development has been lead by other coders such as Garf and Aoyumi. Aoyumi's AoTuV series of encoders was incorporated into the September 2004 release of 1.1, which brought about the first quality improvements across the board for 2 years.

==Pros==
* Free (as in speech), Open Source and claimed to be patent free
* Good all-round performance (>48kbs - a leading codec at 128kbs)
* Well written [http://www.xiph.org/ogg/vorbis/docs.html specs]
* Several portable hardware players
* Suitable for internet-streaming (via Icecast)
* Fully [[gapless]] playback

==Cons==
* Limited official development
* Current implementations are more computationally intensive to encode and decode than MP3
* Quality at high bitrates could benefit from further tuning

=Techniques used in compression=
* Advanced psymodel
* Coupled stereo modes (Point/Phase Stereo and [[lossless]])
* [[Huffman coding]]
* Vector quantization
* Modified discrete cosine transform ([[MDCT]])
* Multiple block sizes for window switching

=Software=
'''Encoders'''
* [[oggenc]]

'''Decoders'''

* [http://qtcomponents.sourceforge.net/ QuickTime Component] (Allows playback in [[QuickTime]]/[[iTunes]])
* [http://corevorbis.corecodec.org/ CoreVorbis] (DirectShow)
* [http://www.illiminable.com/ogg/ illiminable Ogg Directshow Filters] (Also plays Speex, Theora and FLAC)

=Hardware=
The following list contains some players that support Vorbis playback.
* [[iRiver H-Series]]
* [[Rio Karma]]
* [[IAudio M3]]
* [[Neuros]]

=Additional reading=
* [[Ogg]] (Container)
* [http://www.audiocoding.com/modules/wiki/?page=Ogg+Vorbis Ogg Vorbis at AudioCoding]
* [http://www.hydrogenaudio.org/show.php/showtopic/13531 Discussion of Vorbis' legal status]
* [http://www.xiph.org Xiph.org Foundation]
* [http://www.hydrogenaudio.org/forums/index.php?showtopic=15049 Recommended settings thread for encoding with Vorbis.]

Glossary Of Audio Terms

2005-04-14T06:33:59Z

24.147.201.151: /* V */

==A==

* [[AAC]]
* [[ABR]]
* [[ABX]]/[[ABX|ABX testing]]
* [[AC3]]
* [[Aliasing]]
* [[AltPresets]]
* [[Amplitude]]
* [[APE]] ([[Monkey's Audio]])
* [[APE Tags]]
* [[Artifact]]/[[Artifact|Distortion]]
* [[ATH]] (Absolute Threshold of Hearing)

==B==

* [[Bandpass filter]]
* [[Bandstop filter]]/[[Bandstop filter|Band reject]]
* [[Bandwidth]]
* [[Bark]]
* [[Bit reservoir]]
* [[Bitrate]]
* [[Bit depth|Bits per sample]] / [[Bit depth]]
* [[Blind test]]
* [[Block switching]]

==C==

* [[CBR]]/[[Constant bitrate]]/[[CBR|Constant bitrate coding]]
* [[Channel coupling]]
* [[Clipping]]
* [[Codec]]
* [[Container format]]
* [[Critical band]]

==D==

* [[dB]]/[[dB|Decibel]]
* [[DC coefficient]]
* [[DCT]]
* [[DCT coefficient]]
* [[Digital Radio Mondiale|DRM]] (Digital Radio Mondiale)
* [[Digital Rights Management|DRM]] (Digital Rights Management)
* [[DSP]]
* [[DTS]]

==F==

* [[FFT]]
* [[Filterbank]]
* [[FIR filter]] (Finite Impulse Response Filters)
* [[FLAC]]
* [[Frequency]]
* [[Frequency domain]]

==H==

* [[Harmonics]]
* [[Highpass]]
* [[Huffman coding]]

==I==

* [[ID3]]
* [[IIR filter]] (Infinite Impulse Response Filters)
* [[Impulse]]
* [[Intensity stereo]]
* [[Inverse mix]]

==J==

* [[Joint stereo]]

==L==

* [[LFE]] (Low Frequency Extension)
* [[LPAC]]
* [[Long block]]
* [[Lossless]]
* [[Lossy]]
* [[Lowpass]]
* [[ATH|LTQ]] (Level of Threshold in Quiet)

==M==

* [[Masking]]
* [[MDCT]]
* [[Metadata]]
* [[Mid-side stereo]]
* [[Monkey's Audio]]
* [[MP3]] (MPEG 1 Audio Layer 3)
* [[MP3Pro]]
* [[Musepack|MPC]]/[[Musepack|MP+]]/[[Musepack]]/[[Musepack|Mpeg Plus]]
* [[Mpeg]] (Motion Picture Expert Group)
* [[MPEG-4]]
* [[Multichannel]]

==N==

* [[Neural network]]
* [[Noise shaping]]
* [[Noise like signals]]
* [[Notch filter]]
* [[Nyquist rate]]/[[Nyquist frequency]]/[[Nyquist sampling theorem]]

==O==

* [[Ogg]]
* [[Ogg Vorbis]]
* [[OptimFROG]]

==P==

* [[Parametric Stereo]]/[[PS]]
* [[PCM]]
* [[Pre echo]]/[[Pre echo|Post echo]]
* [[Psychoacoustic]]
* [[Psychoacoustic model]]

==Q==

* [[Quantize]]/[[Quantizer]]/[[Quantization]]
* [[Quantization noise]]

==R==

* [[Range coding]]
* [[Rice coding]]
* [[Ringing]]

==S==

* [[Sampling rate]]/[[Sampling rate|Sample rate]]/[[Sampling rate|Sampling frequency]]
* [[SBR]] (Spectral Band Replication)
* [[Scale factor]]/[[Scale factor|Scale factor band]]
* [[Short block]]
* [[Shorten]] ([[SHN]])
* [[Sigma Delta Modulation]]
* [[Spectrogram]]
* [[Streaming]]
* [[Subband]]
* [[SZIP]]

==T==

* [[TTA]] '''T'''rue '''T'''ap '''A'''udio
* [[Temporal accuracy]]
* [[Temporal smearing]]
* [[Time domain]]
* [[Tonality]]/[[Tonality|Tonal signals]]/[[Tonality|Tonality estimation]]
* [[Transcoding]]
* [[Transform]]
* [[Transient]]
* [[Transient smearing]]
* [[Transparency]]

==V==

* [[VBR]] (Variable Bitrate/Variable Bitrate Coding)
* [[Vector Quantization]]

==W==

* [[WAV]]
* [[Wavelet]]
* [[WMA]]

Vorbis

2005-04-14T00:08:02Z

24.147.201.151: /* Techniques Used In Compression */

Topic Index

2005-04-13T23:45:23Z

24.147.201.151: /* PC Audio */