Hydrogenaudio Knowledgebase - User contributions [en]

ID3v1.1

2014-04-08T22:36:45Z

92.23.163.8: /* Copyright */ corrected links

[[ID3v1]] may well be easy to implement for programmers, but it sure is frustrating for those with their own, creative ideas. Since the [[ID3v1]] tag had a fixed size and no space marked "Reserved for future use", there isn't really room for that much improvement, if you want to maintain compatibility with existing software.

{|align=center border="0" cellpadding="5" cellspacing="5"
|[[Image:id3v1.1_blocks.png|frame|center|Example ID3v1.1 Tag]]
|
{|border="1" cellpadding="2" cellspacing="0"
| Song title || 30 characters
|-
| Artist || 30 characters
|-
| Album || 30 characters
|-
| Year || 4 characters
|-
| Comment || 28 characters
|-
| Album track || 2 characters
|-
| Genre || 1 byte
|}
|}

One who found a way out was Michael Mutschler who made a quite clever improvement on [[ID3v1]]. Since all non-filled fields must be padded with zeroed bytes its a good assumption that all [[ID3v1]] readers will stop reading the field when they encounter a zeroed byte. If the second last byte of a field is zeroed and the last one isn't we have an extra byte to fill with information. As the comments field is to short to write anything useful in the ID3v1.1 standard declares that this field should be 28 characters, that the next byte always should be zero and that the last byte before the genre byte should contain which track on the CD this music comes from.

==Additional Reading==
* [[ID3v1]]
* [[ID3v2]]

==Copyright==
This material is copyrighted by [http://id3.org/Copyright Martin Nilsson], taken from [http://id3.org/ID3v1 ID3 made easy ].

[[Category:Metadata]]
[[Category:MP3]]
[[Category:Technical]]

ID3v2

2014-04-08T22:31:15Z

92.23.163.8: d3v2.4.0-structure.txt, Copyright, ID3v2Easy links corrected

[[Image:id3v2_blocks.png|frame|right|Example ID3v2 Tag]]
'''ID3v2''' is a tagging format for MP3 files, designed to provide a much greater deal of functionality and flexibility over its predecessor, [[ID3v1]]. ID3v2 allows for a much greater amount of metadata to be embedded within MP3 files over [[ID3v1]], allowing each frame (metadata field) to contain practically any conceivable type of information, including title, album, performer, lyrics, equalizer presets, album art and other images, and much, much more.

One of the design goals of ID3v2 was flexibility and extensibility. To acheive this, the ID3v2 format was modelled as a container format, allowing the creation of new frames within ID3v2 tags without worrying whether they will break other programs, as all ID3v2 parsers will simply ignore any frames they don't recognize.
Each frame can be as large as 16MB, and the entire tag can be as large as 256MB, so there are practically no space constraints when writing ID3v2 tags.

Also, ID3v2 supports Unicode as standard, allowing metadata to be created in any language.

ID3v2 tags are generally added to the beginning of MP3 files, allowing audio players to display tag metadata before the end of the file is read (useful for streaming MP3 files). However, as of ID3v2.4, they can be appended to the end as well, meaning that a change in length in any ID3 frame will not necessarily provoke a rewrite of the entire file.

ID3v2-tagged files are also generally safe to be played on players that weren't designed to support them. They are sync-safe, allowing MPEG audio decoders to determine the tags contain no audio data and can be safely skipped.

Even though ID3v2 is designed to support a lot of space-heavy features, such as inline pictures and file inclusion, ironically, ID3v2 still tries to use bytes as efficiently as possible, and allows for compression of each frame. If you convert an [[ID3v1]] tag to an ID3v2 tag, it is likely that the ID3v2 tag will be smaller. If you convert an [[ID3v1]] tag with full fields (that is, all 30 bytes are used in every field) to an ID3v2 tag, it will be 56 bytes larger. Note that this is the worst case scenario with regards to tag size for [[ID3v1]] to ID3v2 conversion.

==Additional Reading==
* [[ID3v1]]
* [[ID3v1.1]]
* [http://id3.org/id3v2.4.0-structure?highlight=(d3v2.4.0-structure.txt) ID3v2.4.0 Informal Standard]

==Copyright==
The image is copyrighted by [http://id3.org/Copyright Martin Nilsson], taken from [http://id3.org/ID3v2Easy ID3v2 made easy].

[[Category:Metadata]]
[[Category:MP3]]
[[Category:Technical]]

Frequency

2014-04-08T22:15:45Z

92.23.163.8: grahammitchell vorbis intro, fixed link

'''Frequency''' is defined as the number of cycles of a periodic motion in a unit of time.

The SI unit of frequency is called hertz (Hz, after its inventor Heinrich Hertz). One hertz corresponds to one cycle (or full oscillation) per second.

Example: Audible sound waves have a frequency ranging between approximately 20 Hz to 20 000 Hz. This means that at any point along the path of the sound wave, the pressure will oscilate from high to low 20 to 20000 times every second.

In digital audio the maximum frequency that can be correctly recreated is half the sampling frequency/[[sampling rate]]. So with 44.1kHz [[sampling rate]], frequencies can be recreated up to 22.05kHz.

The frequency of a wave refers to how many times per second the wave transitions from its highest point to its lowest point and back again. This is typically measured in hertz (Hz), or number of cycles per second. The frequency of a wave determines its pitch. High frequency waves have a high pitch, and lower frequency waves have a lower pitch. The average human can hear frequencies from 15 or 20Hz to roughly 20,000Hz (20kHz).

The amplitude of a wave refers to half the distance between a wave's highest point and its lowest. The larger the amplitude of a wave, the louder its volume, which is typically measured in decibels ([[dB]]). The decibel range for human hearing is complicated and depends on the frequency of the sound in question, age, and listening conditions, but roughly ranges from 0 to 120db, with each change in 10db corresponding to a doubling of the perceived volume.

The absolute threshold - [[ATH]] - is the volume level at which one can detect a particular sound 50% of the time.

<center>[[Image:Analog_wave.png|frame|none|Frequency and amplitude picture © Graham Mitchell [http://grahammitchell.com/writings/vorbis_intro.html vorbis intro]]]</center>

[[Category:Technical]]

Gapless playback

2014-04-08T22:10:18Z

92.23.163.8: /* Test samples */ fixed download link to gapless_WAVPACK_free_of_right.zip

'''Gapless playback''' is the seamless playback of sequential audio tracks in digital audio formats. It allows live music or consecutive tracks to be heard exactly as they are mastered, without gaps between tracks.

==Example==
The typical situation is this:
# Someone uses [[DAE]] software to extract audio data from an audio CD and save it to separate files, one for each track.
# During or after the creation of the files, the audio data is compressed with a lossy codec like MP3.
# Upon playback, a click or a brief (fraction-of-a-second) pause can be heard between tracks.

Even if two lossily-compressed tracks are decompressed and merged into a single track, a gap will usually remain between them.

== Why gaps occur ==
There are two main reasons why gaps occur during playback: compression scheme artifacts and poorly designed playback systems.

=== Compression scheme artifacts ===
Most lossy audio compression schemes add a small amount of silence to both ends of the audio. Due to the introduction of such gaps, the duration of the output is slightly increased. Silence at the beginning is called '''delay''' and silence at the end is '''padding'''. Delay can be called '''encoder delay''' or '''decoder delay''' depending on what part of the compression scheme introduces the delay. Padding normally is only added by the encoder. [[#Common encoder delay values|Common encoder delay values]] are in a table below.

Many compression schemes involve a time/frequency domain transform (such as an [[MDCT]]) which unavoidably introduces a certain amount of silence (part of the encoder delay) at the beginning of the stream. This gap can be enlarged at decode time when a reverse-MDCT is performed, because the reverse transform will also introduce a gap (decoder delay) of its own.

Another part of the encoder delay and padding is related to the overlapping nature of MDCT transforms; each segment of the encoded audio depends in part on adjacent segments. Therefore, a little bit of extra signal is required at both ends of the input in order to fully and accurately encode the frequencies found in the original ends. The encoder may add a consistent number of silent samples to one or both ends to achieve this.

Yet another factor is the fact that transforms act on data in units of fixed-size blocks. In order to fill up the last block, silence may be appended to the input before the transform. This makes the overall padding amount hard to predict, if the length of the input isn't known.

If the amount of encoder delay and padding are not all accurately accounted for, the encoded silence will be decoded together with the audio data, creating gaps at the ends of the track. Likewise, if the decoder delay is not accounted for, the gap at the end will be further enlarged.

This issue is technical but also standards-related. The popular [[MP3]] standard, for example, defines no way to record the amount of delay or padding for later removal. Encoder delay may vary from encoder to encoder, making automatic removal difficult. Some encoders use [[MP3#VBRI, XING, and LAME headers|a nonstandard header]] to store actual encoder delay & padding values, but not all players/decoders support it. More recent (newer than MP3) compressed audio formats have been designed to address this problem, and can therefore produce gapless audio if played back correctly.

=== Poorly designed playback systems ===
Even when the audio file itself does not contain undesirable gaps, software/firmware/hardware design often adds gaps during playback. In some cases, software closes and re-opens the output stream when switching tracks, causing the hardware to create a very short "click". This problem is solved in more sophisticated designs of gapless playback.

A different design problem relates to software/firmware/hardware which are not ready to seamlessly move to the next track by the time the current track is complete. In this scenario, the listener is left waiting in silence as the player locates the next file, reads it, decodes the first blocks if necessary and then starts loading the buffer for playback. The gap can be as much as half a second, or even more — very noticeable in "continuous" music such as certain classical or dance genres.

Many older audio players on personal computers do not implement the required buffering to play gapless audio. Some of these rely on third-party gapless audio plug-ins to buffer output. Some newer players and newer versions of old players now support gapless playback directly.

==CD gaps==
Gapless playback, as discussed here, is ''not'' related to "gaps" or "pregaps" on CDs, at least not directly. Those kinds of gaps are just sections of audio which have been designated on the CD as being the "index 00" portion of each track. They are the audio (often silent or nearly so, but not always) which plays while the CD player counts up from a negative time to 0:00. Some DAE software offers the option of detecting and omitting these sections when ripping. Although this may seem to be a method of creating "gapless" audio, it's merely removing, with only 588-sample (1/75th of a second) precision, chunks of sound based on flags embedded in the CD, not based on how silent the audio actually is. This kind of feature is useful when ripping a CD-R which had been mistakenly burned with 2-second gaps between each track, but when used on a properly mastered commercial CD, it's more likely to just create audible seams where there were none before.

==Testing for gapless==
The best way to test for gapless playback is by using ''Test Samples'' listed at the end of this page.

It's tempting to test gapless playback by generating tracks with pure tones, and encoding them into a lossy format. This is not recommended for two reasons:

# Unless the first tone ends at 0 level and the second tone starts at 0 level, a glitch will be heard during transition.
# Some decoders chop off the end and/or the start of the audio data. So the playback will be perceived as gapless, while it is actually not.

See the discussion on [http://www.hydrogenaudio.org/forums/index.php?showtopic=40995&st=0&p=360548&#entry360548 this HA thread].

== Optimal solution ==
It is possible to store metadata in the audio to explicitly declare the playtime, and/or the amount of padding/delays introduced in the encoding process. This information can be used to ensure that playtime will remain constant after decoding with no added silence. The audio playback software must be able to recognize the metadata, and trim the decoded audio as necessary.

The software can then take care to keep the output stream open between tracks. It must also buffer the beginning of the following track in the same way it buffers the current track during normal playback.

Optimal gapless audio is achieved if
* the compression method supports gapless playback,
* the software properly decodes the audio data and metadata,
* the next track is buffered and ready to play, and
* the output stream remains open between tracks.

A collection of consecutive tracks will then play in the same way they were mastered, allowing the listener to hear their album as the author intended.

== How to add or repair gap metadata in MP3s ==
You will need a wave editor with a proper selection zoom feature (to count samples) and foobar2000 to edit the delay/padding info in the mp3 files.

# Decode all files to uncompressed wav format with foobar2000 (this is important, because if you open the mp3 directly with the wave editor its internal decoder may add extra silence at the beginning and/or at the end). You need to convert separate tracks to separate wav files, not to a single wav file.
# Determine the encoder delay (number of silent samples at the beginning of each track). This number should be identical for all tracks if they were encoded with the same software. For example, for tracks encoded with [[Gogo]], since it's [[LAME]]-based, the delay should be 576 samples, but it wouldn't hurt to check visually in the editor.
# For each track that should end with gapless transition, determine the number of silent samples at the end (the padding). Unfortunately this procedure can not be reliably automated, because silent samples may not strictly equal zero (due to the encoder filter ringing). You'll need to visually search for the waveform cut-off, which probably won't be abrupt.
# Determine the true length of the track in samples: true length = (raw length) - (encoder delay) - (padding). This number should be a multiple of 588 (the audio CD sector size). If it is not, then either you incorrectly determined number of padding samples, or the content was not encoded from the audio CD, or possibly it was digitally processed prior to mp3 encoding.
# Edit the mp3 info frame with foobar2000 (local menu -> utilities -> edit mp3 gapless playback information). Enter the encoder delay from step 2 into the "encoder delay" field and the true track length from step 4 into the "padding" field. Save the changes.

=== Common encoder delay values ===
{|class="wikitable" border=1
!encoder
!delay
|-
|align="right"|'''LAME'''
|align="center"|576 samples
|-
|align="right"|'''iTunes/QuickTime''' MP3
|align="center"|528 samples
|-
|align="right"|'''Windows Media Player/FhG FastEnc'''
|align="center"|672 samples
|}
Additional values for older encoders are given at [http://mp3decoders.mp3-tech.org/decoders_lame.html lame v3.81 and 3.87 beta mp3 decoding quality test results].

==Alternative solutions==
Digital signal processor ([[DSP]]) plugins can be used to detect silence between tracks and trim the audio as necessary on playback. This is not an optimal solution because it does not always produce results identical to the source. Sometimes an artist may intentionally leave silence at track boundaries for dramatic effect; removing this silence also removes that effect.

It can also be difficult to properly implement silence removal. If the silence threshold is too low and the track contains decoder artifacts, the software may not recognise some silences. Conversely, if the threshold is too high, the software may remove entire sections of quiet music at the beginning or end of a track.

DSP plugins can also be used to cross-fade between tracks. This eliminates gaps that some listeners find distracting, but also greatly alters the audio data and is not always desirable. In particular, when tracks are meant to be played together and perform the transition at high volume, cross-fading results in a large volume drop.

Both of these alternate solutions are typically used to address compression methods that do not support the metadata for gapless playback. Like the optimal solution, they still require buffering and not closing the output stream; however, they require more computations, making them less efficient. In portable digital audio players, this can mean a reduced playing time on batteries.

Due to the drawbacks of the alternative solutions above, some listeners dislike their negative effects more than the gap they attempt to remove. Another problem is that the solutions above do nothing to prevent the output stream from being closed and reopened at track boundaries; some measures can be taken to simulate a gapless output stream, but they are not always successful and side-effects may occur.

Another alternative is to ignore track boundaries, encoding a single collection of tracks as a single compressed file, relying on [[cuesheet]]s (or something similar) for navigation. While this method results in gapless playback within the collection of tracks with consecutive playback, it can be unwieldy due to the possibly large size of the resulting compressed file. Furthermore, unless the playback software or hardware can recognize the cue sheets, navigating between tracks may be difficult.

== Format support ==
Since [[lossless]] data compression excludes the possibility of the introduction of padding, all lossless audio file formats are inherently gapless. The following [[lossy]] audio file formats have provisions for gapless encoding.

* (Ogg) [[Vorbis]]
* [[Speex]]

Some other formats do not officially support gapless encoding, but some implementations of encoders or decoders may handle gapless metadata.

* [[LAME]]-encoded MP3 can be gapless with players that support the LAME Mp3 info tag.
* [[AAC]] in [[MP4]] encoded with Nero Digital from [[Nero AG]] can be gapless with [[foobar2000]].
* AAC in MP4 encoded with iTunes 7.0 can be gapless with iTunes 7.0 and latest foobar2000.

== Gapless solutions ==
* [[foobar2000]]: Optimal gapless playback
* [http://www.hydrogenaudio.org/forums/index.php?showtopic=18530 Otachan's in_!mpg123]: A gapless [[MP3]] decoder for [[Winamp]]
:'''Note:''' Winamp 5.2 implements gapless playback in its built-in MP3 decoder.

== Test samples ==
* [http://tiffman.com/gtkpod/gapless_WAVPACK_free_of_right.zip]: 17 very short gapless samples (2 MB)

== External links ==
* [http://yabb.jriver.com/interact/index.php?topic=47033.msg322589#msg322589 some info about how iTunes/QuickTime writes and handles gapless playback info]

[[Category:Technical]]

Topic Index

2014-04-08T21:55:36Z

92.23.163.8: /* Books/Research */ paper-audio-tedspanias-00.pdf fixed

* For a more structured 'table of contents', use the '''[[Main Page#Categories|Categories List]]'''.
* 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 the style related discussion thread] in the forums.

= General Information =
== General Guides ==
* [[Create a long-term archive]]
* [[Secure ripping|Secure Ripping]]
* [[Enabling DMA]]
* [[Choosing_the_best_codec.|Choosing the best codec]]
* [[Lossless_comparison|Lossless Comparison]]

== EAC Guides ==
* Configuring [[EAC Drive Configuration|EAC and CD-ROM Drives]]
* Configuring [[EAC and Lame]]
* Configuring [[EAC and AAC | EAC and Nero AAC]]
* Configuring [[EAC and Ogg Vorbis | EAC and Vorbis]]
* Configuring [[EAC and Musepack]]
* Configuring [[EAC and WavPack]]
* Configuring [[EAC and FLAC]]
* Configuring [[EAC and Monkey's Audio]]
* Configuring [[EAC and Cue Sheets]]
* Configuring EAC and [[REACT]]

== CDex Guides ==
* Configuring [[CDex Drive Configuration|CDex and CD-ROM Drives]]
* Configuring [[CDex and FLAC]]

== AAC Guides ==
* [[AAC_FAQ|AAC FAQ]] frequently asked questions in reguard to AAC the latest industry standard.
* [[AAC encoders|AAC Encoders]] known AAC encoder/decoder implementations and configuring them (Apple Itunes, Nero AAC, etc)
* [[Linux and Nero AAC]] a short guide for configuring Nero AAC encoder to run under Linux.

== Vorbis Guides ==
* [[Recommended_Ogg_Vorbis|Recommended encoders and settings for Vorbis]].
* [[Lancer|Ogg Vorbis Acceleration Project]] information reguarding optimized Vorbis binaries.
* [[OggDropXPd|OggDropXPd]] guide for encoding with John 33's popular drag-n-drop frontend.
* [[Compiling_aoTuV|Compiling AoTuV]] compiling the AoTuV binaries under Linux.

= Audio Codecs =
== [[Lossy]] ==
* [[Advanced Audio Coding]] (AAC)
* [[AC3]]
* [[ATRAC3]]
* [[DTS]]
* [[MP2]]
* [[MP3]]
* [[Musepack]] (MPC, MP+)
* (Ogg) [[Vorbis]]
* [[QDesign]]
* [[VQF]]
* [[Windows Media Audio]] (WMA)

== [[Lossless]] ==
* [[ALAC|Apple Lossless]]
* [[ALS|Audio Lossless Coding]]
* [[DTS-HD|DTS Master Audio]]
* [[Free Lossless Audio Codec]] (FLAC)
* [[Lossless Audio]] (LA)
* [[Lossless Predictive Audio Compression]] (LPAC)
* [[Monkey's Audio]]
* [[OptimFROG]]
* [[Lossless comparison#RealAudio Lossless|RealAudio Lossless]]
* [[Shorten]]
* [[TTA|True Audio]]
* [[WavPack]]
* [[Windows Media Audio|WMA Lossless]]

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

= Media Extractors =
== CD Extractors ==
* [[Audiograbber]] (Win32)
* [[CDex]] (Win32)
* [[cdparanoia]] (Posix)
* [[dBpowerAMP with AccurateRip]] (Win32)
* [[Exact_Audio_Copy|Exact Audio Copy]] (Win32)
* [[Grip]] (Posix)
* [[iTunes]] (Win32/Mac OS/X)
* [[MediaMonkey]] (Win32)
* [[Max]] (Mac OS/X)
* [[XLD]] (Mac OS/X)
* [[PlexTools]] (Win32)
* [[Rubyripper]] (Posix/Mac OS/X)

== DVD Extractors ==
* [http://www.dvddecrypter.org.uk/ DVD Decrypter] (Win32)
* DVD-A / CPPM Decrypter (Win32/Posix)

= Media Players =
== Windows ==
* [[Apollo]]
* [[dBpowerAMP]]
* [[Foobar2000:Foobar2000|foobar2000]]
* [[iTunes]]
* [[MediaMonkey]]
* [[musikCube]]
* [[Quintessential Player]]
* [[VUplayer]]
* [[Winamp]]
* [[Windows Media Player]]
* [[wxMusik]]
* [[XMPlay]]
* [[WMPTSE]] (with WMP)

== Linux/BSD ==
* [[Amarok]]
* [[BMP]]
* [[JuK]]
* [[LAMIP]]
* [[Muine]]
* [[Music Player Daemon (MPD)]]
* [[Quod Libet]]
* [[Rhythmbox]]
* [[wxMusik]]
* [[XMMS]]

== Mac OS X (Non-BSD Specific) ==
* [[iTunes]]
* [[skiTunes]]
* [[Whamb]]

== Other ==
* [[CL-Amp]] (BeOS)

= Audio Editors =
== Windows ==
* [[Adobe Audition]] (previously known as ''Cool Edit'')
* [[Audacity]]
* [[Goldwave]]
* [http://www.sonymediasoftware.com/products/soundforgefamily.asp Sony Sound Forge] (Previously released by Sonic Foundry)

== Linux/BSD ==
* [[Ardour]]
* [[Audacity]]
* [[ReZound]]

== Mac OS X (Non-BSD Specific) ==
* [[Ardour]]
* [[Audacity]]

== Other ==
* [http://timidity.sourceforge.net/ Timidity++] (MIDI to PCM (WAV) converter) Timidity++ synthesizes MIDI files (sequences) in real-time using Gravis UltraSound Soundfont patches (loosly based upon Wavetable Synthesis) to common digital audio file formats such as, WAV, AU, AIFF, Ogg Vorbis, FLAC, etc. Useful for those who want to bypass FM Synthesizers on their sound card's to hear MIDI sequence as it was intended to be heard.)

= 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]]
* [[M-Audio Revolution 5.1]]
* [[M-Audio Revolution 7.1]]
* [[Chaintech AV-710]]
* [[E-MU 0404 24/192]]
* [[ASUS Xonar D1]]
* [[ASUS Xonar D2/PM]]

== Notebook Audio ==
* [[Echo Indigo IO 24/96]]

== Firewire ==
* [[E-MU 1212M 24/192]]
* [[M-Audio Firewire 410]]

== HiFi ==
* [[M-Audio Fast Track USB]]
* [[Slim Devices Squeezebox]]
* [[Slim Devices Transporter]]
* [[Hermstedt AG Hifidelio]]
* [[Olive Musica]]

== MIDI Interfaces ==
* M-Audio MIDISport Uno 1x1
* M-Audio MIDISport 2x2
* MOTU 5x5 Micro Lite
* MOTU Fastlane USB

== Digital Audio Players ==
=== Portable Flash ===
''(These players make use of a internal flash drive.)''
* [[Apple iPod]] Nano
* [[Apple iPod]] Shuffle
* Creative MuVo
* iRiver iFP Series
* MPIO lFP Series
* [[Rio Carbon]]

=== Portable HD ===
''(These players make use of a internal harddrive.)''
* [[Apple iPod]] with ''([http://www.rockbox.org/twiki/bin/view/Main/TargetStatus#iriver_H110_H115_H120_H140 Rockbox firmware])''
* [[Archos Jukebox with Rockbox Software]]
* [[Cowon iAudio]] with ''([http://www.rockbox.org/twiki/bin/view/Main/TargetStatus#iAudio_X5 Rockbox firmware])''
* [[iRiver H-Series]] with ''([http://www.rockbox.org/twiki/bin/view/Main/TargetStatus#iriver_H110_H115_H120_H140 Rockbox firmware])''
* [[MPIO H-Series]]
* [[Neuros]]
* [[Rio Karma]]
* [[Sandisk]] with ''([http://www.rockbox.org/twiki/bin/view/Main/TargetStatus#iAudio_X5 Rockbox firmware])''

=== Portable CD ===

=== Car Players ===
''(Car stereos that can read MP3, Vorbis, WMA, etc.).''
* [[Aiwa CDC-MP3]]
* [[Yakumo Ultrasound]]

===DVD Players===
* [[Neuston's Maestro DVX-1201]]

=== Firmware ===
* [[Rockbox]]

= Audio Theory =
== Analog Audio ==
* [[Tube Amplifiers]]
* [[Vinyl_Playback_and_Recording|Vinyl Audio]]

== Digital Audio ==
* [[Solid State Amplifiers]]
* [[ReplayGain]]

== Testing Methodology ==
* [[ABX]]
* [[EAQUAL]]

= Audio Development =
''note: Let's start with basic development tools (compilers, engineering tools, dev. libraries) until we think of more tools to add. I am also adding external links to books, tutorials, etc under resources.''

== Tools ==
* [http://www.mathworks.com/products/matlab/ MATLAB 7.0] commercial software for algorithmic design, developement, engineering, and scientific computing. (multi-platform support)
* [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.gnu.org/software/emacs/emacs.html GNU Emacs] an extensible, customizable, self-documenting real-time display editor. Great for writing all types of source code especially on Unix. (multi-platform support)
* [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. (Win 9x, NT, 2000, and XP)

== 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 answered)
* [http://www.aes.org/ AES] The Audio Engineering Society website. Home of year-round world AES conferences.
* [http://www.dspguru.com/info/books/favor.htm DSP Tutorials] 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 analysis, filters, effects and synthesis. (C, C++, and Java code)
* [http://www.itakura.nuee.nagoya-u.ac.jp/HRTF/ HRTF] A database of measurements and research papers on Head Related Transfer Functions for 3D-Audio. (PDF, Audio)
* [http://www.midi.org/about-midi/specshome.shtml MIDI Specifications] MIDI 1.0, the new MusicXMF specification, and SP-MIDI for third generation 3GPP mobile devices (PDF)
* [http://www.gamedev.net/reference/articles/article2008.asp OpenAL] a beginners tutorial on writing code using OpenAL for audio programming in computer games and other applications. (C, C++).
* [http://www.alsa-project.org/ ALSA Project] (Advanced Linux Sound Architecture) bringing audio and MIDI capabilities to Linux.
* [http://www.engmath.dal.ca/courses/engm6610/notes/notes.html A Really friendly guide to Wavelets] A good introduction to wavelets aimed towards engineer, requires a fair amount of background knowledge.

== Books/Research ==
* [http://www.amazon.com/gp/product/3540231595/qid=1135380559/sr=1-3/ref=sr_1_3/102-1730075-7300931?s=books&v=glance&n=283155 Psychoacoustics - Facts and Models] author's Zwicker, Fastl, and Hugo, revised 2005 third edition. The book for comprehensive psychoacoustics models and figures.
* [http://spanias.faculty.asu.edu/papers/paper-audio-tedspanias-00.pdf Perceptual Audio Coding] authors A. Painter and T. Spanias. A comprehensive paper on percepual audio coding (PDF)
* [http://www.amazon.com/gp/product/0780334493/103-2094923-9567001?v=glance&n=283155&%5Fencoding=UTF8&me=ATVPDKIKX0DER&no=283155&st=books Speech Communications Human and Machine] this book provides a good introduction to speech coding, inlcuding anaylsis, recognition, and perception. This text is a very good introduction for beginners.
* [http://www.dspguide.com/ Scientist and Engineer's Guide to DSP] author Steve Smith, a great guide for beginners new to the subject of DSP (free online text)(PDF)
*[http://www.amazon.com/exec/obidos/tg/detail/-/0792391810/ref=ase_theinternetdatac/103-9882844-5344648?v=glance&s=books Vector Quantization] authors Gersho and Gray. Good read for understanding how VQ and arithmetic coding work.

= 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.head-fi.org (general information/board about head phones and portable audio players)
* http://www.rarewares.org (Downloads for many audio and media tools)
* http://www.rockbox.org/ (Open-source jukebox firmware for numerous DAP and architectures, GNU/GPL License).
* http://www.anythingbutipod.com/ (Thorough reviews of some of the most popular digital audio players out there)
* http://www.airplayspeakers.net/ (Reviews of some of the most popular AirPlay speakers out there for use with Apple's AirPlay technology)
* http://www.headphonereviews.org.uk/ (Reviews of some popular headphones for use with personal medial players etc)

== Articles/Debates ==
* [http://www.hydrogenaudio.org/forums/index.php?showtopic=31759&st=0 DVD-A vs. SACD debate]
* [http://www.hydrogenaudio.org/forums/index.php?showtopic=38041&st=0 Subjective vs. Objective testing]
* [http://www.ambisonic.net/pdf/ambidvd2001.pdf 5.1 surround vs. Ambisonics comparison]

== Listening Tests ==
* [http://wiki.hydrogenaudio.org/index.php?title=Lossless_comparison listening tests]
* [[Listening_Tests|Inventory of several listening tests, mainly on HA.org]]

= Other Topics =
== Video ==
* [[MPEG-4 Visual]]
* [[Real Video]]
* [[Theora]]
* [[Tarkin]]
* [[Snow]]
* [[VP6]]
* [[Windows Media Video]]

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

= Glossary =
* [[Glossary_Of_Audio_Terms|Glossary of Audio Terms]]

= Introduction & User Guides =
''A starting place for new users to audio, with guides to compression and CD ripping and a glossary of all common terms.''

* [[Glossary Of Audio Terms]]
* [[FAQ]]
* [[Audio format guide]]
* Ripping Guides
** [[EAC]] (Win32)
** [[CDex]] (Win32)
** [[DBpowerAMP with AccurateRip]] (Win32)
** [[Plextools]] (Win32)
** [[Max]] (Mac OS/X)
** [[XLD]] (Mac OS/X)
** [[Rubyripper]] (Posix/Mac OS/X)
* [[Tagging]]
* [[ReplayGain]]



= Audio Codecs =
''Pros/cons, Recommended settings, Useful tools, etc.''

*'''[[:Category:Codecs|The Technical/Codecs Category]]'''


= Container Formats =
''What is a [[container format]]?''

* [[Matroska]]
* [[MP4]]
* [[Ogg]]


= Audio Hardware & CD Ripping =
*''CD Tools, Secure Ripping, Soundcard Quality''
** [[Secure ripping]]
** Ripping Guide
*** [[EAC]]
*** [[CDex]]
*** [[DBpowerAMP with AccurateRip]]
*** [[Plextools]]
** [[CD copy protection]]
** [[CD Hardware]]
* Vinyl records and turntables
** [[Introduction to Vinyl|Introduction]]
** [[Advantages of Vinyl]]
** [[Disadvantages of Vinyl]]
** [[Vinyl Myths]]
** [[Purchasing Vinyl LPs and Components|Purchasing]]
** Record Player Components
*** [[Turntable]]
*** [[Cartridge]]
*** [[Phono preamplifier]]
** [[Evaluating Vinyl Sound Quality]]
** [[Vinyl Playback and Recording|Playback and Recording]]
** [[Vinyl Maintenance|Maintenance]]
** [[Vinyl Forum Posts and FAQs|FAQs]]
** [[Vinyl Glossary|Glossary]]
** [[Vinyl Links|Links]]
** [[Vinyl Mastering|Mastering]]
* [[Soundcard|Soundcards]]
* [[Other hardware]]



= Tests =
* [[EAC Vs CDex SecureMode]] (by Pio2001)
* [[EAC Vs CDex SecureMode II]] (by westgroveg)
* [[Listening Tests]]


=Downloads=
''Where to obtain the software discussed in HAK.''

* [[Download page]]


= Using HAK =
* [[Help:Contents|Wiki User Guide]]
* Play around at the [[Hydrogenaudio Knowledgebase:Sandbox|Sandbox]] to try your formatting skills. Everything goes here and everything can/may be deleted.
* Contributors should read [[Help:Editing|editing help]].

Topic Index

2014-04-08T21:50:39Z

92.23.163.8: /* DVD Extractors */ Removed direct linking to file.

* For a more structured 'table of contents', use the '''[[Main Page#Categories|Categories List]]'''.
* 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 the style related discussion thread] in the forums.

= General Information =
== General Guides ==
* [[Create a long-term archive]]
* [[Secure ripping|Secure Ripping]]
* [[Enabling DMA]]
* [[Choosing_the_best_codec.|Choosing the best codec]]
* [[Lossless_comparison|Lossless Comparison]]

== EAC Guides ==
* Configuring [[EAC Drive Configuration|EAC and CD-ROM Drives]]
* Configuring [[EAC and Lame]]
* Configuring [[EAC and AAC | EAC and Nero AAC]]
* Configuring [[EAC and Ogg Vorbis | EAC and Vorbis]]
* Configuring [[EAC and Musepack]]
* Configuring [[EAC and WavPack]]
* Configuring [[EAC and FLAC]]
* Configuring [[EAC and Monkey's Audio]]
* Configuring [[EAC and Cue Sheets]]
* Configuring EAC and [[REACT]]

== CDex Guides ==
* Configuring [[CDex Drive Configuration|CDex and CD-ROM Drives]]
* Configuring [[CDex and FLAC]]

== AAC Guides ==
* [[AAC_FAQ|AAC FAQ]] frequently asked questions in reguard to AAC the latest industry standard.
* [[AAC encoders|AAC Encoders]] known AAC encoder/decoder implementations and configuring them (Apple Itunes, Nero AAC, etc)
* [[Linux and Nero AAC]] a short guide for configuring Nero AAC encoder to run under Linux.

== Vorbis Guides ==
* [[Recommended_Ogg_Vorbis|Recommended encoders and settings for Vorbis]].
* [[Lancer|Ogg Vorbis Acceleration Project]] information reguarding optimized Vorbis binaries.
* [[OggDropXPd|OggDropXPd]] guide for encoding with John 33's popular drag-n-drop frontend.
* [[Compiling_aoTuV|Compiling AoTuV]] compiling the AoTuV binaries under Linux.

= Audio Codecs =
== [[Lossy]] ==
* [[Advanced Audio Coding]] (AAC)
* [[AC3]]
* [[ATRAC3]]
* [[DTS]]
* [[MP2]]
* [[MP3]]
* [[Musepack]] (MPC, MP+)
* (Ogg) [[Vorbis]]
* [[QDesign]]
* [[VQF]]
* [[Windows Media Audio]] (WMA)

== [[Lossless]] ==
* [[ALAC|Apple Lossless]]
* [[ALS|Audio Lossless Coding]]
* [[DTS-HD|DTS Master Audio]]
* [[Free Lossless Audio Codec]] (FLAC)
* [[Lossless Audio]] (LA)
* [[Lossless Predictive Audio Compression]] (LPAC)
* [[Monkey's Audio]]
* [[OptimFROG]]
* [[Lossless comparison#RealAudio Lossless|RealAudio Lossless]]
* [[Shorten]]
* [[TTA|True Audio]]
* [[WavPack]]
* [[Windows Media Audio|WMA Lossless]]

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

= Media Extractors =
== CD Extractors ==
* [[Audiograbber]] (Win32)
* [[CDex]] (Win32)
* [[cdparanoia]] (Posix)
* [[dBpowerAMP with AccurateRip]] (Win32)
* [[Exact_Audio_Copy|Exact Audio Copy]] (Win32)
* [[Grip]] (Posix)
* [[iTunes]] (Win32/Mac OS/X)
* [[MediaMonkey]] (Win32)
* [[Max]] (Mac OS/X)
* [[XLD]] (Mac OS/X)
* [[PlexTools]] (Win32)
* [[Rubyripper]] (Posix/Mac OS/X)

== DVD Extractors ==
* [http://www.dvddecrypter.org.uk/ DVD Decrypter] (Win32)
* DVD-A / CPPM Decrypter (Win32/Posix)

= Media Players =
== Windows ==
* [[Apollo]]
* [[dBpowerAMP]]
* [[Foobar2000:Foobar2000|foobar2000]]
* [[iTunes]]
* [[MediaMonkey]]
* [[musikCube]]
* [[Quintessential Player]]
* [[VUplayer]]
* [[Winamp]]
* [[Windows Media Player]]
* [[wxMusik]]
* [[XMPlay]]
* [[WMPTSE]] (with WMP)

== Linux/BSD ==
* [[Amarok]]
* [[BMP]]
* [[JuK]]
* [[LAMIP]]
* [[Muine]]
* [[Music Player Daemon (MPD)]]
* [[Quod Libet]]
* [[Rhythmbox]]
* [[wxMusik]]
* [[XMMS]]

== Mac OS X (Non-BSD Specific) ==
* [[iTunes]]
* [[skiTunes]]
* [[Whamb]]

== Other ==
* [[CL-Amp]] (BeOS)

= Audio Editors =
== Windows ==
* [[Adobe Audition]] (previously known as ''Cool Edit'')
* [[Audacity]]
* [[Goldwave]]
* [http://www.sonymediasoftware.com/products/soundforgefamily.asp Sony Sound Forge] (Previously released by Sonic Foundry)

== Linux/BSD ==
* [[Ardour]]
* [[Audacity]]
* [[ReZound]]

== Mac OS X (Non-BSD Specific) ==
* [[Ardour]]
* [[Audacity]]

== Other ==
* [http://timidity.sourceforge.net/ Timidity++] (MIDI to PCM (WAV) converter) Timidity++ synthesizes MIDI files (sequences) in real-time using Gravis UltraSound Soundfont patches (loosly based upon Wavetable Synthesis) to common digital audio file formats such as, WAV, AU, AIFF, Ogg Vorbis, FLAC, etc. Useful for those who want to bypass FM Synthesizers on their sound card's to hear MIDI sequence as it was intended to be heard.)

= 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]]
* [[M-Audio Revolution 5.1]]
* [[M-Audio Revolution 7.1]]
* [[Chaintech AV-710]]
* [[E-MU 0404 24/192]]
* [[ASUS Xonar D1]]
* [[ASUS Xonar D2/PM]]

== Notebook Audio ==
* [[Echo Indigo IO 24/96]]

== Firewire ==
* [[E-MU 1212M 24/192]]
* [[M-Audio Firewire 410]]

== HiFi ==
* [[M-Audio Fast Track USB]]
* [[Slim Devices Squeezebox]]
* [[Slim Devices Transporter]]
* [[Hermstedt AG Hifidelio]]
* [[Olive Musica]]

== MIDI Interfaces ==
* M-Audio MIDISport Uno 1x1
* M-Audio MIDISport 2x2
* MOTU 5x5 Micro Lite
* MOTU Fastlane USB

== Digital Audio Players ==
=== Portable Flash ===
''(These players make use of a internal flash drive.)''
* [[Apple iPod]] Nano
* [[Apple iPod]] Shuffle
* Creative MuVo
* iRiver iFP Series
* MPIO lFP Series
* [[Rio Carbon]]

=== Portable HD ===
''(These players make use of a internal harddrive.)''
* [[Apple iPod]] with ''([http://www.rockbox.org/twiki/bin/view/Main/TargetStatus#iriver_H110_H115_H120_H140 Rockbox firmware])''
* [[Archos Jukebox with Rockbox Software]]
* [[Cowon iAudio]] with ''([http://www.rockbox.org/twiki/bin/view/Main/TargetStatus#iAudio_X5 Rockbox firmware])''
* [[iRiver H-Series]] with ''([http://www.rockbox.org/twiki/bin/view/Main/TargetStatus#iriver_H110_H115_H120_H140 Rockbox firmware])''
* [[MPIO H-Series]]
* [[Neuros]]
* [[Rio Karma]]
* [[Sandisk]] with ''([http://www.rockbox.org/twiki/bin/view/Main/TargetStatus#iAudio_X5 Rockbox firmware])''

=== Portable CD ===

=== Car Players ===
''(Car stereos that can read MP3, Vorbis, WMA, etc.).''
* [[Aiwa CDC-MP3]]
* [[Yakumo Ultrasound]]

===DVD Players===
* [[Neuston's Maestro DVX-1201]]

=== Firmware ===
* [[Rockbox]]

= Audio Theory =
== Analog Audio ==
* [[Tube Amplifiers]]
* [[Vinyl_Playback_and_Recording|Vinyl Audio]]

== Digital Audio ==
* [[Solid State Amplifiers]]
* [[ReplayGain]]

== Testing Methodology ==
* [[ABX]]
* [[EAQUAL]]

= Audio Development =
''note: Let's start with basic development tools (compilers, engineering tools, dev. libraries) until we think of more tools to add. I am also adding external links to books, tutorials, etc under resources.''

== Tools ==
* [http://www.mathworks.com/products/matlab/ MATLAB 7.0] commercial software for algorithmic design, developement, engineering, and scientific computing. (multi-platform support)
* [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.gnu.org/software/emacs/emacs.html GNU Emacs] an extensible, customizable, self-documenting real-time display editor. Great for writing all types of source code especially on Unix. (multi-platform support)
* [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. (Win 9x, NT, 2000, and XP)

== 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 answered)
* [http://www.aes.org/ AES] The Audio Engineering Society website. Home of year-round world AES conferences.
* [http://www.dspguru.com/info/books/favor.htm DSP Tutorials] 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 analysis, filters, effects and synthesis. (C, C++, and Java code)
* [http://www.itakura.nuee.nagoya-u.ac.jp/HRTF/ HRTF] A database of measurements and research papers on Head Related Transfer Functions for 3D-Audio. (PDF, Audio)
* [http://www.midi.org/about-midi/specshome.shtml MIDI Specifications] MIDI 1.0, the new MusicXMF specification, and SP-MIDI for third generation 3GPP mobile devices (PDF)
* [http://www.gamedev.net/reference/articles/article2008.asp OpenAL] a beginners tutorial on writing code using OpenAL for audio programming in computer games and other applications. (C, C++).
* [http://www.alsa-project.org/ ALSA Project] (Advanced Linux Sound Architecture) bringing audio and MIDI capabilities to Linux.
* [http://www.engmath.dal.ca/courses/engm6610/notes/notes.html A Really friendly guide to Wavelets] A good introduction to wavelets aimed towards engineer, requires a fair amount of background knowledge.

== Books/Research ==
* [http://www.amazon.com/gp/product/3540231595/qid=1135380559/sr=1-3/ref=sr_1_3/102-1730075-7300931?s=books&v=glance&n=283155 Psychoacoustics - Facts and Models] author's Zwicker, Fastl, and Hugo, revised 2005 third edition. The book for comprehensive psychoacoustics models and figures.
* [http://www.eas.asu.edu/~spanias/papers/paper-audio-tedspanias-00.pdf Perceptual Audio Coding] authors A. Painter and T. Spanias. A comprehensive paper on percepual audio coding (PDF)
* [http://www.amazon.com/gp/product/0780334493/103-2094923-9567001?v=glance&n=283155&%5Fencoding=UTF8&me=ATVPDKIKX0DER&no=283155&st=books Speech Communications Human and Machine] this book provides a good introduction to speech coding, inlcuding anaylsis, recognition, and perception. This text is a very good introduction for beginners.
* [http://www.dspguide.com/ Scientist and Engineer's Guide to DSP] author Steve Smith, a great guide for beginners new to the subject of DSP (free online text)(PDF)
*[http://www.amazon.com/exec/obidos/tg/detail/-/0792391810/ref=ase_theinternetdatac/103-9882844-5344648?v=glance&s=books Vector Quantization] authors Gersho and Gray. Good read for understanding how VQ and arithmetic coding work.

= 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.head-fi.org (general information/board about head phones and portable audio players)
* http://www.rarewares.org (Downloads for many audio and media tools)
* http://www.rockbox.org/ (Open-source jukebox firmware for numerous DAP and architectures, GNU/GPL License).
* http://www.anythingbutipod.com/ (Thorough reviews of some of the most popular digital audio players out there)
* http://www.airplayspeakers.net/ (Reviews of some of the most popular AirPlay speakers out there for use with Apple's AirPlay technology)
* http://www.headphonereviews.org.uk/ (Reviews of some popular headphones for use with personal medial players etc)

== Articles/Debates ==
* [http://www.hydrogenaudio.org/forums/index.php?showtopic=31759&st=0 DVD-A vs. SACD debate]
* [http://www.hydrogenaudio.org/forums/index.php?showtopic=38041&st=0 Subjective vs. Objective testing]
* [http://www.ambisonic.net/pdf/ambidvd2001.pdf 5.1 surround vs. Ambisonics comparison]

== Listening Tests ==
* [http://wiki.hydrogenaudio.org/index.php?title=Lossless_comparison listening tests]
* [[Listening_Tests|Inventory of several listening tests, mainly on HA.org]]

= Other Topics =
== Video ==
* [[MPEG-4 Visual]]
* [[Real Video]]
* [[Theora]]
* [[Tarkin]]
* [[Snow]]
* [[VP6]]
* [[Windows Media Video]]

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

= Glossary =
* [[Glossary_Of_Audio_Terms|Glossary of Audio Terms]]

= Introduction & User Guides =
''A starting place for new users to audio, with guides to compression and CD ripping and a glossary of all common terms.''

* [[Glossary Of Audio Terms]]
* [[FAQ]]
* [[Audio format guide]]
* Ripping Guides
** [[EAC]] (Win32)
** [[CDex]] (Win32)
** [[DBpowerAMP with AccurateRip]] (Win32)
** [[Plextools]] (Win32)
** [[Max]] (Mac OS/X)
** [[XLD]] (Mac OS/X)
** [[Rubyripper]] (Posix/Mac OS/X)
* [[Tagging]]
* [[ReplayGain]]



= Audio Codecs =
''Pros/cons, Recommended settings, Useful tools, etc.''

*'''[[:Category:Codecs|The Technical/Codecs Category]]'''


= Container Formats =
''What is a [[container format]]?''

* [[Matroska]]
* [[MP4]]
* [[Ogg]]


= Audio Hardware & CD Ripping =
*''CD Tools, Secure Ripping, Soundcard Quality''
** [[Secure ripping]]
** Ripping Guide
*** [[EAC]]
*** [[CDex]]
*** [[DBpowerAMP with AccurateRip]]
*** [[Plextools]]
** [[CD copy protection]]
** [[CD Hardware]]
* Vinyl records and turntables
** [[Introduction to Vinyl|Introduction]]
** [[Advantages of Vinyl]]
** [[Disadvantages of Vinyl]]
** [[Vinyl Myths]]
** [[Purchasing Vinyl LPs and Components|Purchasing]]
** Record Player Components
*** [[Turntable]]
*** [[Cartridge]]
*** [[Phono preamplifier]]
** [[Evaluating Vinyl Sound Quality]]
** [[Vinyl Playback and Recording|Playback and Recording]]
** [[Vinyl Maintenance|Maintenance]]
** [[Vinyl Forum Posts and FAQs|FAQs]]
** [[Vinyl Glossary|Glossary]]
** [[Vinyl Links|Links]]
** [[Vinyl Mastering|Mastering]]
* [[Soundcard|Soundcards]]
* [[Other hardware]]



= Tests =
* [[EAC Vs CDex SecureMode]] (by Pio2001)
* [[EAC Vs CDex SecureMode II]] (by westgroveg)
* [[Listening Tests]]


=Downloads=
''Where to obtain the software discussed in HAK.''

* [[Download page]]


= Using HAK =
* [[Help:Contents|Wiki User Guide]]
* Play around at the [[Hydrogenaudio Knowledgebase:Sandbox|Sandbox]] to try your formatting skills. Everything goes here and everything can/may be deleted.
* Contributors should read [[Help:Editing|editing help]].

Topic Index

2014-04-08T21:48:43Z

92.23.163.8: /* Websites */ Pruned links

* For a more structured 'table of contents', use the '''[[Main Page#Categories|Categories List]]'''.
* 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 the style related discussion thread] in the forums.

= General Information =
== General Guides ==
* [[Create a long-term archive]]
* [[Secure ripping|Secure Ripping]]
* [[Enabling DMA]]
* [[Choosing_the_best_codec.|Choosing the best codec]]
* [[Lossless_comparison|Lossless Comparison]]

== EAC Guides ==
* Configuring [[EAC Drive Configuration|EAC and CD-ROM Drives]]
* Configuring [[EAC and Lame]]
* Configuring [[EAC and AAC | EAC and Nero AAC]]
* Configuring [[EAC and Ogg Vorbis | EAC and Vorbis]]
* Configuring [[EAC and Musepack]]
* Configuring [[EAC and WavPack]]
* Configuring [[EAC and FLAC]]
* Configuring [[EAC and Monkey's Audio]]
* Configuring [[EAC and Cue Sheets]]
* Configuring EAC and [[REACT]]

== CDex Guides ==
* Configuring [[CDex Drive Configuration|CDex and CD-ROM Drives]]
* Configuring [[CDex and FLAC]]

== AAC Guides ==
* [[AAC_FAQ|AAC FAQ]] frequently asked questions in reguard to AAC the latest industry standard.
* [[AAC encoders|AAC Encoders]] known AAC encoder/decoder implementations and configuring them (Apple Itunes, Nero AAC, etc)
* [[Linux and Nero AAC]] a short guide for configuring Nero AAC encoder to run under Linux.

== Vorbis Guides ==
* [[Recommended_Ogg_Vorbis|Recommended encoders and settings for Vorbis]].
* [[Lancer|Ogg Vorbis Acceleration Project]] information reguarding optimized Vorbis binaries.
* [[OggDropXPd|OggDropXPd]] guide for encoding with John 33's popular drag-n-drop frontend.
* [[Compiling_aoTuV|Compiling AoTuV]] compiling the AoTuV binaries under Linux.

= Audio Codecs =
== [[Lossy]] ==
* [[Advanced Audio Coding]] (AAC)
* [[AC3]]
* [[ATRAC3]]
* [[DTS]]
* [[MP2]]
* [[MP3]]
* [[Musepack]] (MPC, MP+)
* (Ogg) [[Vorbis]]
* [[QDesign]]
* [[VQF]]
* [[Windows Media Audio]] (WMA)

== [[Lossless]] ==
* [[ALAC|Apple Lossless]]
* [[ALS|Audio Lossless Coding]]
* [[DTS-HD|DTS Master Audio]]
* [[Free Lossless Audio Codec]] (FLAC)
* [[Lossless Audio]] (LA)
* [[Lossless Predictive Audio Compression]] (LPAC)
* [[Monkey's Audio]]
* [[OptimFROG]]
* [[Lossless comparison#RealAudio Lossless|RealAudio Lossless]]
* [[Shorten]]
* [[TTA|True Audio]]
* [[WavPack]]
* [[Windows Media Audio|WMA Lossless]]

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

= Media Extractors =
== CD Extractors ==
* [[Audiograbber]] (Win32)
* [[CDex]] (Win32)
* [[cdparanoia]] (Posix)
* [[dBpowerAMP with AccurateRip]] (Win32)
* [[Exact_Audio_Copy|Exact Audio Copy]] (Win32)
* [[Grip]] (Posix)
* [[iTunes]] (Win32/Mac OS/X)
* [[MediaMonkey]] (Win32)
* [[Max]] (Mac OS/X)
* [[XLD]] (Mac OS/X)
* [[PlexTools]] (Win32)
* [[Rubyripper]] (Posix/Mac OS/X)

== DVD Extractors ==
* [http://www.dvddecrypter.org.uk/SetupDVDDecrypter_3.5.4.0.exe DVD Decrypter] (Win32)
* DVD-A / CPPM Decrypter (Win32/Posix)

= Media Players =
== Windows ==
* [[Apollo]]
* [[dBpowerAMP]]
* [[Foobar2000:Foobar2000|foobar2000]]
* [[iTunes]]
* [[MediaMonkey]]
* [[musikCube]]
* [[Quintessential Player]]
* [[VUplayer]]
* [[Winamp]]
* [[Windows Media Player]]
* [[wxMusik]]
* [[XMPlay]]
* [[WMPTSE]] (with WMP)

== Linux/BSD ==
* [[Amarok]]
* [[BMP]]
* [[JuK]]
* [[LAMIP]]
* [[Muine]]
* [[Music Player Daemon (MPD)]]
* [[Quod Libet]]
* [[Rhythmbox]]
* [[wxMusik]]
* [[XMMS]]

== Mac OS X (Non-BSD Specific) ==
* [[iTunes]]
* [[skiTunes]]
* [[Whamb]]

== Other ==
* [[CL-Amp]] (BeOS)

= Audio Editors =
== Windows ==
* [[Adobe Audition]] (previously known as ''Cool Edit'')
* [[Audacity]]
* [[Goldwave]]
* [http://www.sonymediasoftware.com/products/soundforgefamily.asp Sony Sound Forge] (Previously released by Sonic Foundry)

== Linux/BSD ==
* [[Ardour]]
* [[Audacity]]
* [[ReZound]]

== Mac OS X (Non-BSD Specific) ==
* [[Ardour]]
* [[Audacity]]

== Other ==
* [http://timidity.sourceforge.net/ Timidity++] (MIDI to PCM (WAV) converter) Timidity++ synthesizes MIDI files (sequences) in real-time using Gravis UltraSound Soundfont patches (loosly based upon Wavetable Synthesis) to common digital audio file formats such as, WAV, AU, AIFF, Ogg Vorbis, FLAC, etc. Useful for those who want to bypass FM Synthesizers on their sound card's to hear MIDI sequence as it was intended to be heard.)

= 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]]
* [[M-Audio Revolution 5.1]]
* [[M-Audio Revolution 7.1]]
* [[Chaintech AV-710]]
* [[E-MU 0404 24/192]]
* [[ASUS Xonar D1]]
* [[ASUS Xonar D2/PM]]

== Notebook Audio ==
* [[Echo Indigo IO 24/96]]

== Firewire ==
* [[E-MU 1212M 24/192]]
* [[M-Audio Firewire 410]]

== HiFi ==
* [[M-Audio Fast Track USB]]
* [[Slim Devices Squeezebox]]
* [[Slim Devices Transporter]]
* [[Hermstedt AG Hifidelio]]
* [[Olive Musica]]

== MIDI Interfaces ==
* M-Audio MIDISport Uno 1x1
* M-Audio MIDISport 2x2
* MOTU 5x5 Micro Lite
* MOTU Fastlane USB

== Digital Audio Players ==
=== Portable Flash ===
''(These players make use of a internal flash drive.)''
* [[Apple iPod]] Nano
* [[Apple iPod]] Shuffle
* Creative MuVo
* iRiver iFP Series
* MPIO lFP Series
* [[Rio Carbon]]

=== Portable HD ===
''(These players make use of a internal harddrive.)''
* [[Apple iPod]] with ''([http://www.rockbox.org/twiki/bin/view/Main/TargetStatus#iriver_H110_H115_H120_H140 Rockbox firmware])''
* [[Archos Jukebox with Rockbox Software]]
* [[Cowon iAudio]] with ''([http://www.rockbox.org/twiki/bin/view/Main/TargetStatus#iAudio_X5 Rockbox firmware])''
* [[iRiver H-Series]] with ''([http://www.rockbox.org/twiki/bin/view/Main/TargetStatus#iriver_H110_H115_H120_H140 Rockbox firmware])''
* [[MPIO H-Series]]
* [[Neuros]]
* [[Rio Karma]]
* [[Sandisk]] with ''([http://www.rockbox.org/twiki/bin/view/Main/TargetStatus#iAudio_X5 Rockbox firmware])''

=== Portable CD ===

=== Car Players ===
''(Car stereos that can read MP3, Vorbis, WMA, etc.).''
* [[Aiwa CDC-MP3]]
* [[Yakumo Ultrasound]]

===DVD Players===
* [[Neuston's Maestro DVX-1201]]

=== Firmware ===
* [[Rockbox]]

= Audio Theory =
== Analog Audio ==
* [[Tube Amplifiers]]
* [[Vinyl_Playback_and_Recording|Vinyl Audio]]

== Digital Audio ==
* [[Solid State Amplifiers]]
* [[ReplayGain]]

== Testing Methodology ==
* [[ABX]]
* [[EAQUAL]]

= Audio Development =
''note: Let's start with basic development tools (compilers, engineering tools, dev. libraries) until we think of more tools to add. I am also adding external links to books, tutorials, etc under resources.''

== Tools ==
* [http://www.mathworks.com/products/matlab/ MATLAB 7.0] commercial software for algorithmic design, developement, engineering, and scientific computing. (multi-platform support)
* [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.gnu.org/software/emacs/emacs.html GNU Emacs] an extensible, customizable, self-documenting real-time display editor. Great for writing all types of source code especially on Unix. (multi-platform support)
* [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. (Win 9x, NT, 2000, and XP)

== 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 answered)
* [http://www.aes.org/ AES] The Audio Engineering Society website. Home of year-round world AES conferences.
* [http://www.dspguru.com/info/books/favor.htm DSP Tutorials] 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 analysis, filters, effects and synthesis. (C, C++, and Java code)
* [http://www.itakura.nuee.nagoya-u.ac.jp/HRTF/ HRTF] A database of measurements and research papers on Head Related Transfer Functions for 3D-Audio. (PDF, Audio)
* [http://www.midi.org/about-midi/specshome.shtml MIDI Specifications] MIDI 1.0, the new MusicXMF specification, and SP-MIDI for third generation 3GPP mobile devices (PDF)
* [http://www.gamedev.net/reference/articles/article2008.asp OpenAL] a beginners tutorial on writing code using OpenAL for audio programming in computer games and other applications. (C, C++).
* [http://www.alsa-project.org/ ALSA Project] (Advanced Linux Sound Architecture) bringing audio and MIDI capabilities to Linux.
* [http://www.engmath.dal.ca/courses/engm6610/notes/notes.html A Really friendly guide to Wavelets] A good introduction to wavelets aimed towards engineer, requires a fair amount of background knowledge.

== Books/Research ==
* [http://www.amazon.com/gp/product/3540231595/qid=1135380559/sr=1-3/ref=sr_1_3/102-1730075-7300931?s=books&v=glance&n=283155 Psychoacoustics - Facts and Models] author's Zwicker, Fastl, and Hugo, revised 2005 third edition. The book for comprehensive psychoacoustics models and figures.
* [http://www.eas.asu.edu/~spanias/papers/paper-audio-tedspanias-00.pdf Perceptual Audio Coding] authors A. Painter and T. Spanias. A comprehensive paper on percepual audio coding (PDF)
* [http://www.amazon.com/gp/product/0780334493/103-2094923-9567001?v=glance&n=283155&%5Fencoding=UTF8&me=ATVPDKIKX0DER&no=283155&st=books Speech Communications Human and Machine] this book provides a good introduction to speech coding, inlcuding anaylsis, recognition, and perception. This text is a very good introduction for beginners.
* [http://www.dspguide.com/ Scientist and Engineer's Guide to DSP] author Steve Smith, a great guide for beginners new to the subject of DSP (free online text)(PDF)
*[http://www.amazon.com/exec/obidos/tg/detail/-/0792391810/ref=ase_theinternetdatac/103-9882844-5344648?v=glance&s=books Vector Quantization] authors Gersho and Gray. Good read for understanding how VQ and arithmetic coding work.

= 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.head-fi.org (general information/board about head phones and portable audio players)
* http://www.rarewares.org (Downloads for many audio and media tools)
* http://www.rockbox.org/ (Open-source jukebox firmware for numerous DAP and architectures, GNU/GPL License).
* http://www.anythingbutipod.com/ (Thorough reviews of some of the most popular digital audio players out there)
* http://www.airplayspeakers.net/ (Reviews of some of the most popular AirPlay speakers out there for use with Apple's AirPlay technology)
* http://www.headphonereviews.org.uk/ (Reviews of some popular headphones for use with personal medial players etc)

== Articles/Debates ==
* [http://www.hydrogenaudio.org/forums/index.php?showtopic=31759&st=0 DVD-A vs. SACD debate]
* [http://www.hydrogenaudio.org/forums/index.php?showtopic=38041&st=0 Subjective vs. Objective testing]
* [http://www.ambisonic.net/pdf/ambidvd2001.pdf 5.1 surround vs. Ambisonics comparison]

== Listening Tests ==
* [http://wiki.hydrogenaudio.org/index.php?title=Lossless_comparison listening tests]
* [[Listening_Tests|Inventory of several listening tests, mainly on HA.org]]

= Other Topics =
== Video ==
* [[MPEG-4 Visual]]
* [[Real Video]]
* [[Theora]]
* [[Tarkin]]
* [[Snow]]
* [[VP6]]
* [[Windows Media Video]]

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

= Glossary =
* [[Glossary_Of_Audio_Terms|Glossary of Audio Terms]]

= Introduction & User Guides =
''A starting place for new users to audio, with guides to compression and CD ripping and a glossary of all common terms.''

* [[Glossary Of Audio Terms]]
* [[FAQ]]
* [[Audio format guide]]
* Ripping Guides
** [[EAC]] (Win32)
** [[CDex]] (Win32)
** [[DBpowerAMP with AccurateRip]] (Win32)
** [[Plextools]] (Win32)
** [[Max]] (Mac OS/X)
** [[XLD]] (Mac OS/X)
** [[Rubyripper]] (Posix/Mac OS/X)
* [[Tagging]]
* [[ReplayGain]]



= Audio Codecs =
''Pros/cons, Recommended settings, Useful tools, etc.''

*'''[[:Category:Codecs|The Technical/Codecs Category]]'''


= Container Formats =
''What is a [[container format]]?''

* [[Matroska]]
* [[MP4]]
* [[Ogg]]


= Audio Hardware & CD Ripping =
*''CD Tools, Secure Ripping, Soundcard Quality''
** [[Secure ripping]]
** Ripping Guide
*** [[EAC]]
*** [[CDex]]
*** [[DBpowerAMP with AccurateRip]]
*** [[Plextools]]
** [[CD copy protection]]
** [[CD Hardware]]
* Vinyl records and turntables
** [[Introduction to Vinyl|Introduction]]
** [[Advantages of Vinyl]]
** [[Disadvantages of Vinyl]]
** [[Vinyl Myths]]
** [[Purchasing Vinyl LPs and Components|Purchasing]]
** Record Player Components
*** [[Turntable]]
*** [[Cartridge]]
*** [[Phono preamplifier]]
** [[Evaluating Vinyl Sound Quality]]
** [[Vinyl Playback and Recording|Playback and Recording]]
** [[Vinyl Maintenance|Maintenance]]
** [[Vinyl Forum Posts and FAQs|FAQs]]
** [[Vinyl Glossary|Glossary]]
** [[Vinyl Links|Links]]
** [[Vinyl Mastering|Mastering]]
* [[Soundcard|Soundcards]]
* [[Other hardware]]



= Tests =
* [[EAC Vs CDex SecureMode]] (by Pio2001)
* [[EAC Vs CDex SecureMode II]] (by westgroveg)
* [[Listening Tests]]


=Downloads=
''Where to obtain the software discussed in HAK.''

* [[Download page]]


= Using HAK =
* [[Help:Contents|Wiki User Guide]]
* Play around at the [[Hydrogenaudio Knowledgebase:Sandbox|Sandbox]] to try your formatting skills. Everything goes here and everything can/may be deleted.
* Contributors should read [[Help:Editing|editing help]].

Topic Index

2014-04-08T21:46:30Z

92.23.163.8: /* Listening Tests */ corrected listening tests link

* For a more structured 'table of contents', use the '''[[Main Page#Categories|Categories List]]'''.
* 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 the style related discussion thread] in the forums.

= General Information =
== General Guides ==
* [[Create a long-term archive]]
* [[Secure ripping|Secure Ripping]]
* [[Enabling DMA]]
* [[Choosing_the_best_codec.|Choosing the best codec]]
* [[Lossless_comparison|Lossless Comparison]]

== EAC Guides ==
* Configuring [[EAC Drive Configuration|EAC and CD-ROM Drives]]
* Configuring [[EAC and Lame]]
* Configuring [[EAC and AAC | EAC and Nero AAC]]
* Configuring [[EAC and Ogg Vorbis | EAC and Vorbis]]
* Configuring [[EAC and Musepack]]
* Configuring [[EAC and WavPack]]
* Configuring [[EAC and FLAC]]
* Configuring [[EAC and Monkey's Audio]]
* Configuring [[EAC and Cue Sheets]]
* Configuring EAC and [[REACT]]

== CDex Guides ==
* Configuring [[CDex Drive Configuration|CDex and CD-ROM Drives]]
* Configuring [[CDex and FLAC]]

== AAC Guides ==
* [[AAC_FAQ|AAC FAQ]] frequently asked questions in reguard to AAC the latest industry standard.
* [[AAC encoders|AAC Encoders]] known AAC encoder/decoder implementations and configuring them (Apple Itunes, Nero AAC, etc)
* [[Linux and Nero AAC]] a short guide for configuring Nero AAC encoder to run under Linux.

== Vorbis Guides ==
* [[Recommended_Ogg_Vorbis|Recommended encoders and settings for Vorbis]].
* [[Lancer|Ogg Vorbis Acceleration Project]] information reguarding optimized Vorbis binaries.
* [[OggDropXPd|OggDropXPd]] guide for encoding with John 33's popular drag-n-drop frontend.
* [[Compiling_aoTuV|Compiling AoTuV]] compiling the AoTuV binaries under Linux.

= Audio Codecs =
== [[Lossy]] ==
* [[Advanced Audio Coding]] (AAC)
* [[AC3]]
* [[ATRAC3]]
* [[DTS]]
* [[MP2]]
* [[MP3]]
* [[Musepack]] (MPC, MP+)
* (Ogg) [[Vorbis]]
* [[QDesign]]
* [[VQF]]
* [[Windows Media Audio]] (WMA)

== [[Lossless]] ==
* [[ALAC|Apple Lossless]]
* [[ALS|Audio Lossless Coding]]
* [[DTS-HD|DTS Master Audio]]
* [[Free Lossless Audio Codec]] (FLAC)
* [[Lossless Audio]] (LA)
* [[Lossless Predictive Audio Compression]] (LPAC)
* [[Monkey's Audio]]
* [[OptimFROG]]
* [[Lossless comparison#RealAudio Lossless|RealAudio Lossless]]
* [[Shorten]]
* [[TTA|True Audio]]
* [[WavPack]]
* [[Windows Media Audio|WMA Lossless]]

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

= Media Extractors =
== CD Extractors ==
* [[Audiograbber]] (Win32)
* [[CDex]] (Win32)
* [[cdparanoia]] (Posix)
* [[dBpowerAMP with AccurateRip]] (Win32)
* [[Exact_Audio_Copy|Exact Audio Copy]] (Win32)
* [[Grip]] (Posix)
* [[iTunes]] (Win32/Mac OS/X)
* [[MediaMonkey]] (Win32)
* [[Max]] (Mac OS/X)
* [[XLD]] (Mac OS/X)
* [[PlexTools]] (Win32)
* [[Rubyripper]] (Posix/Mac OS/X)

== DVD Extractors ==
* [http://www.dvddecrypter.org.uk/SetupDVDDecrypter_3.5.4.0.exe DVD Decrypter] (Win32)
* DVD-A / CPPM Decrypter (Win32/Posix)

= Media Players =
== Windows ==
* [[Apollo]]
* [[dBpowerAMP]]
* [[Foobar2000:Foobar2000|foobar2000]]
* [[iTunes]]
* [[MediaMonkey]]
* [[musikCube]]
* [[Quintessential Player]]
* [[VUplayer]]
* [[Winamp]]
* [[Windows Media Player]]
* [[wxMusik]]
* [[XMPlay]]
* [[WMPTSE]] (with WMP)

== Linux/BSD ==
* [[Amarok]]
* [[BMP]]
* [[JuK]]
* [[LAMIP]]
* [[Muine]]
* [[Music Player Daemon (MPD)]]
* [[Quod Libet]]
* [[Rhythmbox]]
* [[wxMusik]]
* [[XMMS]]

== Mac OS X (Non-BSD Specific) ==
* [[iTunes]]
* [[skiTunes]]
* [[Whamb]]

== Other ==
* [[CL-Amp]] (BeOS)

= Audio Editors =
== Windows ==
* [[Adobe Audition]] (previously known as ''Cool Edit'')
* [[Audacity]]
* [[Goldwave]]
* [http://www.sonymediasoftware.com/products/soundforgefamily.asp Sony Sound Forge] (Previously released by Sonic Foundry)

== Linux/BSD ==
* [[Ardour]]
* [[Audacity]]
* [[ReZound]]

== Mac OS X (Non-BSD Specific) ==
* [[Ardour]]
* [[Audacity]]

== Other ==
* [http://timidity.sourceforge.net/ Timidity++] (MIDI to PCM (WAV) converter) Timidity++ synthesizes MIDI files (sequences) in real-time using Gravis UltraSound Soundfont patches (loosly based upon Wavetable Synthesis) to common digital audio file formats such as, WAV, AU, AIFF, Ogg Vorbis, FLAC, etc. Useful for those who want to bypass FM Synthesizers on their sound card's to hear MIDI sequence as it was intended to be heard.)

= 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]]
* [[M-Audio Revolution 5.1]]
* [[M-Audio Revolution 7.1]]
* [[Chaintech AV-710]]
* [[E-MU 0404 24/192]]
* [[ASUS Xonar D1]]
* [[ASUS Xonar D2/PM]]

== Notebook Audio ==
* [[Echo Indigo IO 24/96]]

== Firewire ==
* [[E-MU 1212M 24/192]]
* [[M-Audio Firewire 410]]

== HiFi ==
* [[M-Audio Fast Track USB]]
* [[Slim Devices Squeezebox]]
* [[Slim Devices Transporter]]
* [[Hermstedt AG Hifidelio]]
* [[Olive Musica]]

== MIDI Interfaces ==
* M-Audio MIDISport Uno 1x1
* M-Audio MIDISport 2x2
* MOTU 5x5 Micro Lite
* MOTU Fastlane USB

== Digital Audio Players ==
=== Portable Flash ===
''(These players make use of a internal flash drive.)''
* [[Apple iPod]] Nano
* [[Apple iPod]] Shuffle
* Creative MuVo
* iRiver iFP Series
* MPIO lFP Series
* [[Rio Carbon]]

=== Portable HD ===
''(These players make use of a internal harddrive.)''
* [[Apple iPod]] with ''([http://www.rockbox.org/twiki/bin/view/Main/TargetStatus#iriver_H110_H115_H120_H140 Rockbox firmware])''
* [[Archos Jukebox with Rockbox Software]]
* [[Cowon iAudio]] with ''([http://www.rockbox.org/twiki/bin/view/Main/TargetStatus#iAudio_X5 Rockbox firmware])''
* [[iRiver H-Series]] with ''([http://www.rockbox.org/twiki/bin/view/Main/TargetStatus#iriver_H110_H115_H120_H140 Rockbox firmware])''
* [[MPIO H-Series]]
* [[Neuros]]
* [[Rio Karma]]
* [[Sandisk]] with ''([http://www.rockbox.org/twiki/bin/view/Main/TargetStatus#iAudio_X5 Rockbox firmware])''

=== Portable CD ===

=== Car Players ===
''(Car stereos that can read MP3, Vorbis, WMA, etc.).''
* [[Aiwa CDC-MP3]]
* [[Yakumo Ultrasound]]

===DVD Players===
* [[Neuston's Maestro DVX-1201]]

=== Firmware ===
* [[Rockbox]]

= Audio Theory =
== Analog Audio ==
* [[Tube Amplifiers]]
* [[Vinyl_Playback_and_Recording|Vinyl Audio]]

== Digital Audio ==
* [[Solid State Amplifiers]]
* [[ReplayGain]]

== Testing Methodology ==
* [[ABX]]
* [[EAQUAL]]

= Audio Development =
''note: Let's start with basic development tools (compilers, engineering tools, dev. libraries) until we think of more tools to add. I am also adding external links to books, tutorials, etc under resources.''

== Tools ==
* [http://www.mathworks.com/products/matlab/ MATLAB 7.0] commercial software for algorithmic design, developement, engineering, and scientific computing. (multi-platform support)
* [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.gnu.org/software/emacs/emacs.html GNU Emacs] an extensible, customizable, self-documenting real-time display editor. Great for writing all types of source code especially on Unix. (multi-platform support)
* [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. (Win 9x, NT, 2000, and XP)

== 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 answered)
* [http://www.aes.org/ AES] The Audio Engineering Society website. Home of year-round world AES conferences.
* [http://www.dspguru.com/info/books/favor.htm DSP Tutorials] 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 analysis, filters, effects and synthesis. (C, C++, and Java code)
* [http://www.itakura.nuee.nagoya-u.ac.jp/HRTF/ HRTF] A database of measurements and research papers on Head Related Transfer Functions for 3D-Audio. (PDF, Audio)
* [http://www.midi.org/about-midi/specshome.shtml MIDI Specifications] MIDI 1.0, the new MusicXMF specification, and SP-MIDI for third generation 3GPP mobile devices (PDF)
* [http://www.gamedev.net/reference/articles/article2008.asp OpenAL] a beginners tutorial on writing code using OpenAL for audio programming in computer games and other applications. (C, C++).
* [http://www.alsa-project.org/ ALSA Project] (Advanced Linux Sound Architecture) bringing audio and MIDI capabilities to Linux.
* [http://www.engmath.dal.ca/courses/engm6610/notes/notes.html A Really friendly guide to Wavelets] A good introduction to wavelets aimed towards engineer, requires a fair amount of background knowledge.

== Books/Research ==
* [http://www.amazon.com/gp/product/3540231595/qid=1135380559/sr=1-3/ref=sr_1_3/102-1730075-7300931?s=books&v=glance&n=283155 Psychoacoustics - Facts and Models] author's Zwicker, Fastl, and Hugo, revised 2005 third edition. The book for comprehensive psychoacoustics models and figures.
* [http://www.eas.asu.edu/~spanias/papers/paper-audio-tedspanias-00.pdf Perceptual Audio Coding] authors A. Painter and T. Spanias. A comprehensive paper on percepual audio coding (PDF)
* [http://www.amazon.com/gp/product/0780334493/103-2094923-9567001?v=glance&n=283155&%5Fencoding=UTF8&me=ATVPDKIKX0DER&no=283155&st=books Speech Communications Human and Machine] this book provides a good introduction to speech coding, inlcuding anaylsis, recognition, and perception. This text is a very good introduction for beginners.
* [http://www.dspguide.com/ Scientist and Engineer's Guide to DSP] author Steve Smith, a great guide for beginners new to the subject of DSP (free online text)(PDF)
*[http://www.amazon.com/exec/obidos/tg/detail/-/0792391810/ref=ase_theinternetdatac/103-9882844-5344648?v=glance&s=books Vector Quantization] authors Gersho and Gray. Good read for understanding how VQ and arithmetic coding work.

= 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.)
* <s>ff123.net</s> (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)
* <s>rjamorim.com/rrw/</s> (Download old versions of foobar2000 and other audio and media tools)
* http://www.rockbox.org/ (Open-source jukebox firmware for numerous DAP and architectures, GNU/GPL License).
* http://www.dapreview.net/ (Reviews of some of the most popular digital audio players out there)
* http://www.anythingbutipod.com/ (Thorough reviews of some of the most popular digital audio players out there)
* http://www.airplayspeakers.net/ (Reviews of some of the most popular AirPlay speakers out there for use with Apple's AirPlay technology)
* http://www.headphonereviews.org.uk/ (Reviews of some popular headphones for use with personal medial players etc)

== Articles/Debates ==
* [http://www.hydrogenaudio.org/forums/index.php?showtopic=31759&st=0 DVD-A vs. SACD debate]
* [http://www.hydrogenaudio.org/forums/index.php?showtopic=38041&st=0 Subjective vs. Objective testing]
* [http://www.ambisonic.net/pdf/ambidvd2001.pdf 5.1 surround vs. Ambisonics comparison]

== Listening Tests ==
* [http://wiki.hydrogenaudio.org/index.php?title=Lossless_comparison listening tests]
* [[Listening_Tests|Inventory of several listening tests, mainly on HA.org]]

= Other Topics =
== Video ==
* [[MPEG-4 Visual]]
* [[Real Video]]
* [[Theora]]
* [[Tarkin]]
* [[Snow]]
* [[VP6]]
* [[Windows Media Video]]

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

= Glossary =
* [[Glossary_Of_Audio_Terms|Glossary of Audio Terms]]

= Introduction & User Guides =
''A starting place for new users to audio, with guides to compression and CD ripping and a glossary of all common terms.''

* [[Glossary Of Audio Terms]]
* [[FAQ]]
* [[Audio format guide]]
* Ripping Guides
** [[EAC]] (Win32)
** [[CDex]] (Win32)
** [[DBpowerAMP with AccurateRip]] (Win32)
** [[Plextools]] (Win32)
** [[Max]] (Mac OS/X)
** [[XLD]] (Mac OS/X)
** [[Rubyripper]] (Posix/Mac OS/X)
* [[Tagging]]
* [[ReplayGain]]



= Audio Codecs =
''Pros/cons, Recommended settings, Useful tools, etc.''

*'''[[:Category:Codecs|The Technical/Codecs Category]]'''


= Container Formats =
''What is a [[container format]]?''

* [[Matroska]]
* [[MP4]]
* [[Ogg]]


= Audio Hardware & CD Ripping =
*''CD Tools, Secure Ripping, Soundcard Quality''
** [[Secure ripping]]
** Ripping Guide
*** [[EAC]]
*** [[CDex]]
*** [[DBpowerAMP with AccurateRip]]
*** [[Plextools]]
** [[CD copy protection]]
** [[CD Hardware]]
* Vinyl records and turntables
** [[Introduction to Vinyl|Introduction]]
** [[Advantages of Vinyl]]
** [[Disadvantages of Vinyl]]
** [[Vinyl Myths]]
** [[Purchasing Vinyl LPs and Components|Purchasing]]
** Record Player Components
*** [[Turntable]]
*** [[Cartridge]]
*** [[Phono preamplifier]]
** [[Evaluating Vinyl Sound Quality]]
** [[Vinyl Playback and Recording|Playback and Recording]]
** [[Vinyl Maintenance|Maintenance]]
** [[Vinyl Forum Posts and FAQs|FAQs]]
** [[Vinyl Glossary|Glossary]]
** [[Vinyl Links|Links]]
** [[Vinyl Mastering|Mastering]]
* [[Soundcard|Soundcards]]
* [[Other hardware]]



= Tests =
* [[EAC Vs CDex SecureMode]] (by Pio2001)
* [[EAC Vs CDex SecureMode II]] (by westgroveg)
* [[Listening Tests]]


=Downloads=
''Where to obtain the software discussed in HAK.''

* [[Download page]]


= Using HAK =
* [[Help:Contents|Wiki User Guide]]
* Play around at the [[Hydrogenaudio Knowledgebase:Sandbox|Sandbox]] to try your formatting skills. Everything goes here and everything can/may be deleted.
* Contributors should read [[Help:Editing|editing help]].