HE-AAC - Revision history

J-b: Redirected page to Advanced Audio Coding

2013-07-17T16:19:15Z

Redirected page to Advanced Audio Coding

← Older revision		Revision as of 16:19, 17 July 2013
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	#redirect[[~~AAC~~]]		#redirect[[Advanced_Audio_Coding]]

J-b: Redirected page to AAC

2012-06-28T14:15:47Z

Redirected page to AAC

← Older revision		Revision as of 14:15, 28 June 2012
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	~~{{codec audio\|mod=faad2}}~~		#redirect[[AAC]]
	~~{{wikipedia\|HE-AAC}}~~

	~~'''High Efficiency AAC''' (aka '''aacPlus'''), is a [[lossy]] data compression scheme for audio streams, and is part of the '''[[MPEG-4]] Part 3''' specification.~~

	HE-AAC combines [[Advanced Audio Coding]] (AAC), [[Spectral Band Replication]] (SBR) and, since version 2 (or Enhanced aacPlus), [[parametric stereo]] (PS). The [[codec]] can operate at very low bitrates and is good for [[internet radio]] streaming. A 48 kilobit-per-second stream is considered to have higher quality than 128 [[~~kbit/s]] [[MP3]].~~

	~~VLC supports HE-~~AAC ~~through the [[FAAD2~~]] ~~library.~~


	~~==External links==~~
	* [http://www.tuner2.com/ Tuner2.com] list of Internet radio stations using aacPlus
	* [http://www.codingtechnologies.com/products/aacPlus.htm aacPlus explained]
	* [http://sourceforge.net/projects/faac/ Freeware Advanced Audio Coder] FAAC(encoder) and FAAD2 (decoder)

J-b at 13:13, 28 June 2012

2012-06-28T13:13:09Z

← Older revision		Revision as of 13:13, 28 June 2012
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	{{codec ~~video~~\|mod=faad2}}		{{codec audio\|mod=faad2}}
	{{wikipedia\|HE-AAC}}		{{wikipedia\|HE-AAC}}

Dlother: www.audiocoding.com no longer hosts or is affiliated with faac.

2007-06-01T14:51:47Z

www.audiocoding.com no longer hosts or is affiliated with faac.

← Older revision		Revision as of 14:51, 1 June 2007
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	* [http://www.tuner2.com/ Tuner2.com] list of Internet radio stations using aacPlus		* [http://www.tuner2.com/ Tuner2.com] list of Internet radio stations using aacPlus
	* [http://www.codingtechnologies.com/products/aacPlus.htm aacPlus explained]		* [http://www.codingtechnologies.com/products/aacPlus.htm aacPlus explained]
	* [http://~~www~~.~~audiocoding.com~~/ ~~Open Source AAC codec~~] FAAC (encoder) and FAAD2 (decoder)		* [http://sourceforge.net/projects/faac/ Freeware Advanced Audio Coder] FAAC(encoder) and FAAD2 (decoder)

H2g2bob at 15:56, 20 March 2007

2007-03-20T15:56:31Z

← Older revision		Revision as of 15:56, 20 March 2007
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			{{codec video\|mod=faad2}}
	{{wikipedia\|HE-AAC}}		{{wikipedia\|HE-AAC}}

H2g2bob: Formatting

2006-02-12T15:58:09Z

Formatting

← Older revision		Revision as of 15:58, 12 February 2006
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	~~'''High Efficiency AAC aka~~ HE-AAC ~~aka aacPlus'''~~		{{wikipedia\|HE-AAC}}

			'''High Efficiency AAC''' (aka '''aacPlus'''), is a [[lossy]] data compression scheme for audio streams, and is part of the '''[[MPEG-4]] Part 3''' specification.

	~~'''aacPlus''' is a [[lossy data compression]] scheme for [[audio stream]]s. It is based on [[MPEG~~-~~4]], and~~ combines ~~three techniques:~~ [[Advanced Audio Coding]] (AAC), [[Spectral Band Replication]] (SBR), ~~and~~ [[parametric stereo]] (PS).		HE-AAC combines [[Advanced Audio Coding]] (AAC), [[Spectral Band Replication]] (SBR) and, since version 2 (or Enhanced aacPlus), [[parametric stereo]] (PS). The [[codec]] can operate at very low bitrates and is good for [[internet radio]] streaming. A 48 kilobit-per-second stream is considered to have higher quality than 128 [[kbit/s]] [[MP3]].

	~~aacPlus was standardized by the [[MPEG]] as part of the MPEG-4 Part 3 specification, under the '''High Efficiency AAC''' ('''~~HE-AAC~~''') name.~~		VLC supports HE-AAC through the [[FAAD2]] library.

	~~For details on~~ the ~~MPEG-4 Part 3 specification, see~~ [~~http://en.wikipedia.org/wiki/MPEG-4_Part_3 wikipedia:MPEG-4_Part_3~~].

	~~The [[codec]] can operate at very low bitrates and is good for [[Internet radio]] streaming. A 48 kilobit-per-second stream is considered to have higher quality than 128 [[kbit/s]] [[MP3]].~~

	~~In HE-AAC, Spectral Band Replication (SBR) technology has been applied to AAC, and was incorporated into the standard to form High Efficiency AAC v1 (HE-AAC v1), (sometimes known as aacPlus v1).~~		==External links==

	Another recent introduction to AAC is Parametric Stereo ( aacPlus v2 or Enhanced aacPlus ). These technologies significantly improve the performance of AAC at lower bitrates, and are used, for example, in Digital Radio Mondiale .

	~~====Support====~~
	~~HE-AAC is supported in the [[free software\|free]] [[FAAD2\|FAAD2 decoding library]], and hence in many free players, and in [[Winamp]] and [[foobar2000]].~~

	~~==See also==~~
	*[[.m4a\|.m4a file extension]] (the "mpeg4-audio" extenstion popularized by Apple iTunes)

	===External links===
	* [http://www.tuner2.com/ Tuner2.com] list of Internet radio stations using aacPlus		* [http://www.tuner2.com/ Tuner2.com] list of Internet radio stations using aacPlus
	* [http://www.codingtechnologies.com/products/aacPlus.htm aacPlus explained]		* [http://www.codingtechnologies.com/products/aacPlus.htm aacPlus explained]
	* [http://www.audiocoding.com/ Open Source AAC codec] FAAC (encoder) and FAAD2 (decoder)		* [http://www.audiocoding.com/ Open Source AAC codec] FAAC (encoder) and FAAD2 (decoder)

Ciscokid at 08:03, 11 September 2005

2005-09-11T08:03:51Z

← Older revision		Revision as of 08:03, 11 September 2005
Line 7:		Line 7:

	For details on the MPEG-4 Part 3 specification, see [http://en.wikipedia.org/wiki/MPEG-4_Part_3 wikipedia:MPEG-4_Part_3].		For details on the MPEG-4 Part 3 specification, see [http://en.wikipedia.org/wiki/MPEG-4_Part_3 wikipedia:MPEG-4_Part_3].

	~~(See also [[.mp4\|.mp4 file extension]])~~

	The [[codec]] can operate at very low bitrates and is good for [[Internet radio]] streaming. A 48 kilobit-per-second stream is considered to have higher quality than 128 [[kbit/s]] [[MP3]].		The [[codec]] can operate at very low bitrates and is good for [[Internet radio]] streaming. A 48 kilobit-per-second stream is considered to have higher quality than 128 [[kbit/s]] [[MP3]].
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	====Support====		====Support====
	HE-AAC is supported in the [[free software\|free]] [[FAAD2\|FAAD2 decoding library]], and hence in many free players, and in [[Winamp]] and [[foobar2000]].		HE-AAC is supported in the [[free software\|free]] [[FAAD2\|FAAD2 decoding library]], and hence in many free players, and in [[Winamp]] and [[foobar2000]].

			==See also==
			*[[.m4a\|.m4a file extension]] (the "mpeg4-audio" extenstion popularized by Apple iTunes)

	===External links===		===External links===

Ciscokid: link to MPEG-4, Part 3

2005-09-11T07:59:49Z

link to MPEG-4, Part 3

← Older revision		Revision as of 07:59, 11 September 2005
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	'''aacPlus''' is a [[lossy data compression]] scheme for [[audio stream]]s. It is based on [[MPEG-4]], and combines three techniques: [[Advanced Audio Coding]] (AAC), [[Spectral Band Replication]] (SBR), and [[parametric stereo]] (PS).		'''aacPlus''' is a [[lossy data compression]] scheme for [[audio stream]]s. It is based on [[MPEG-4]], and combines three techniques: [[Advanced Audio Coding]] (AAC), [[Spectral Band Replication]] (SBR), and [[parametric stereo]] (PS).

	aacPlus was standardized by the [[MPEG]] under the '''High Efficiency AAC''' ('''HE-AAC''') name.		aacPlus was standardized by the [[MPEG]] as part of the MPEG-4 Part 3 specification, under the '''High Efficiency AAC''' ('''HE-AAC''') name.

			For details on the MPEG-4 Part 3 specification, see [http://en.wikipedia.org/wiki/MPEG-4_Part_3 wikipedia:MPEG-4_Part_3].

			(See also [[.mp4\|.mp4 file extension]])

	The [[codec]] can operate at very low bitrates and is good for [[Internet radio]] streaming. A 48 kilobit-per-second stream is considered to have higher quality than 128 [[kbit/s]] [[MP3]].		The [[codec]] can operate at very low bitrates and is good for [[Internet radio]] streaming. A 48 kilobit-per-second stream is considered to have higher quality than 128 [[kbit/s]] [[MP3]].

Ciscokid: new

2005-09-11T07:55:22Z

new

New page

'''High Efficiency AAC aka HE-AAC aka aacPlus'''

'''aacPlus''' is a [[lossy data compression]] scheme for [[audio stream]]s. It is based on [[MPEG-4]], and combines three techniques: [[Advanced Audio Coding]] (AAC), [[Spectral Band Replication]] (SBR), and [[parametric stereo]] (PS).

aacPlus was standardized by the [[MPEG]] under the '''High Efficiency AAC''' ('''HE-AAC''') name.

The [[codec]] can operate at very low bitrates and is good for [[Internet radio]] streaming. A 48 kilobit-per-second stream is considered to have higher quality than 128 [[kbit/s]] [[MP3]].

In HE-AAC, Spectral Band Replication (SBR) technology has been applied to AAC, and was incorporated into the standard to form High Efficiency AAC v1 (HE-AAC v1), (sometimes known as aacPlus v1).

Another recent introduction to AAC is Parametric Stereo ( aacPlus v2 or Enhanced aacPlus ). These technologies significantly improve the performance of AAC at lower bitrates, and are used, for example, in Digital Radio Mondiale .

====Support====
HE-AAC is supported in the [[free software|free]] [[FAAD2|FAAD2 decoding library]], and hence in many free players, and in [[Winamp]] and [[foobar2000]].

===External links===
* [http://www.tuner2.com/ Tuner2.com] list of Internet radio stations using aacPlus
* [http://www.codingtechnologies.com/products/aacPlus.htm aacPlus explained]
* [http://www.audiocoding.com/ Open Source AAC codec] FAAC (encoder) and FAAD2 (decoder)