Speex - Revision history

Porcuswiki: Speex obsoleted by Opus. Category.

2022-01-27T21:28:52Z

Speex obsoleted by Opus. Category.

← Older revision		Revision as of 21:28, 27 January 2022
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	'''Speex''' is an Open Source/Free Software patent-free audio ~~compression format~~ designed for speech. ~~The Speex Project aims to lower the barrier of entry for voice applications~~ by providing a free alternative to expensive proprietary speech codecs. Moreover, Speex is well-adapted to Internet applications and provides useful features that are not present in most other codecs. Finally, Speex is part of the GNU Project and is available under the Xiph.org variant of the BSD license.		'''Speex''' is a legacy Open Source/Free Software patent-free audio [[codec]] designed for speech. It is obsoleted by [[Opus]].


	==Technical Information==		==Technical Information==
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	==References==		==References==
	The above information ~~has been~~ copied from the [http://www.speex.org Speex home page].		The above information was copied from the [http://www.speex.org Speex home page].

	[[Category: ~~Lossy audio codecs~~]]		[[Category: Codecs]]

Beardgoggles: Moved to "Lossy audio codecs" category.

2019-07-24T20:41:27Z

Moved to "Lossy audio codecs" category.

← Older revision		Revision as of 20:41, 24 July 2019
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	'''Speex''' is an Open Source/Free Software patent-free audio compression format designed for speech. The Speex Project aims to lower the barrier of entry for voice applications by providing a free alternative to expensive proprietary speech codecs. Moreover, Speex is well-adapted to Internet applications and provides useful features that are not present in most other codecs. Finally, Speex is part of the GNU Project and is available under the Xiph.org variant of the BSD license.		'''Speex''' is an Open Source/Free Software patent-free audio compression format designed for speech. The Speex Project aims to lower the barrier of entry for voice applications by providing a free alternative to expensive proprietary speech codecs. Moreover, Speex is well-adapted to Internet applications and provides useful features that are not present in most other codecs. Finally, Speex is part of the GNU Project and is available under the Xiph.org variant of the BSD license.


	==Technical Information==		==Technical Information==
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	Note that Speex has a number of features that aren’t in other codecs such as [[Intensity stereo]] encoding, integration of multiple sampling rates in the same bitstream, and a VBR mode.		Note that Speex has a number of features that aren’t in other codecs such as [[Intensity stereo]] encoding, integration of multiple sampling rates in the same bitstream, and a VBR mode.

			==References==
			The above information has been copied from the [http://www.speex.org Speex home page].

	~~This information is copied from the [http://www.speex.org Speex home page]~~		[[Category: Lossy audio codecs]]

	~~[[Category: Codecs]]~~
	[[Category: Lossy]]

HotshotGG at 17:00, 9 October 2006

2006-10-09T17:00:19Z

← Older revision		Revision as of 17:00, 9 October 2006
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	[[Category: Codecs]]		[[Category: Codecs]]
			[[Category: Lossy]]

HotshotGG at 19:25, 23 September 2006

2006-09-23T19:25:32Z

← Older revision		Revision as of 19:25, 23 September 2006
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	This information is copied from the [http://www.speex.org Speex home page]		This information is copied from the [http://www.speex.org Speex home page]

			[[Category: Codecs]]

Kjoonlee: bold title

2006-08-24T01:55:21Z

bold title

← Older revision		Revision as of 01:55, 24 August 2006
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	Speex is an Open Source/Free Software patent-free audio compression format designed for speech. The Speex Project aims to lower the barrier of entry for voice applications by providing a free alternative to expensive proprietary speech codecs. Moreover, Speex is well-adapted to Internet applications and provides useful features that are not present in most other codecs. Finally, Speex is part of the GNU Project and is available under the Xiph.org variant of the BSD license.		'''Speex''' is an Open Source/Free Software patent-free audio compression format designed for speech. The Speex Project aims to lower the barrier of entry for voice applications by providing a free alternative to expensive proprietary speech codecs. Moreover, Speex is well-adapted to Internet applications and provides useful features that are not present in most other codecs. Finally, Speex is part of the GNU Project and is available under the Xiph.org variant of the BSD license.

HotshotGG: /* Technical Information */

2006-07-07T19:28:12Z

Technical Information

← Older revision		Revision as of 19:28, 7 July 2006
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	* In-progress fixed-point port		* In-progress fixed-point port
	* Echo Cancellation (experimental)		* Echo Cancellation (experimental)
			* Vorbis psychoacoustics model (experimental)

	Note that Speex has a number of features that aren’t in other codecs such as [[Intensity stereo]] encoding, integration of multiple sampling rates in the same bitstream, and a VBR mode.		Note that Speex has a number of features that aren’t in other codecs such as [[Intensity stereo]] encoding, integration of multiple sampling rates in the same bitstream, and a VBR mode.

HotshotGG: /* The Technology */

2006-07-07T19:27:21Z

The Technology

← Older revision		Revision as of 19:27, 7 July 2006
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	==~~The Technology~~==		==Technical Information==

	Speex is based on CELP and is designed to compress voice at bitrates ranging from 2 to 44 kbps. Some of Speex’s features include:		Speex is based on CELP and is designed to compress voice at bitrates ranging from 2 to 44 kbps. Some of Speex’s features include:

HotshotGG: /* The Technology */

2005-07-05T06:45:45Z

The Technology

← Older revision		Revision as of 06:45, 5 July 2005
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	* Discontinuous Transmission (DTX)		* Discontinuous Transmission (DTX)
	* In-progress fixed-point port		* In-progress fixed-point port
			* Echo Cancellation (experimental)

	Note that Speex has a number of features that aren’t in other codecs such as [[Intensity stereo]] encoding, integration of multiple sampling rates in the same bitstream, and a VBR mode.		Note that Speex has a number of features that aren’t in other codecs such as [[Intensity stereo]] encoding, integration of multiple sampling rates in the same bitstream, and a VBR mode.

Rjamorim at 18:55, 2 July 2005

2005-07-02T18:55:18Z

← Older revision		Revision as of 18:55, 2 July 2005
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	~~=Overview=~~

	Speex is an Open Source/Free Software patent-free audio compression format designed for speech. The Speex Project aims to lower the barrier of entry for voice applications by providing a free alternative to expensive proprietary speech codecs. Moreover, Speex is well-adapted to Internet applications and provides useful features that are not present in most other codecs. Finally, Speex is part of the GNU Project and is available under the Xiph.org variant of the BSD license.		Speex is an Open Source/Free Software patent-free audio compression format designed for speech. The Speex Project aims to lower the barrier of entry for voice applications by providing a free alternative to expensive proprietary speech codecs. Moreover, Speex is well-adapted to Internet applications and provides useful features that are not present in most other codecs. Finally, Speex is part of the GNU Project and is available under the Xiph.org variant of the BSD license.

Jan at 22:32, 25 March 2005

2005-03-25T22:32:29Z

New page

=Overview=

Speex is an Open Source/Free Software patent-free audio compression format designed for speech. The Speex Project aims to lower the barrier of entry for voice applications by providing a free alternative to expensive proprietary speech codecs. Moreover, Speex is well-adapted to Internet applications and provides useful features that are not present in most other codecs. Finally, Speex is part of the GNU Project and is available under the Xiph.org variant of the BSD license.

==The Technology==

Speex is based on CELP and is designed to compress voice at bitrates ranging from 2 to 44 kbps. Some of Speex’s features include:

* Narrowband (8 kHz), wideband (16 kHz), and ultra-wideband (32 kHz) compression in the same bitstream
* Intensity stereo encoding
* Packet loss concealment
* Variable bitrate operation ([[VBR]])
* Voice Activity Detection (VAD)
* Discontinuous Transmission (DTX)
* In-progress fixed-point port

Note that Speex has a number of features that aren’t in other codecs such as [[Intensity stereo]] encoding, integration of multiple sampling rates in the same bitstream, and a VBR mode.

This information is copied from the [http://www.speex.org Speex home page]