Multichannel - Revision history

Speckmade at 13:27, 14 June 2007

2007-06-14T13:27:09Z

← Older revision		Revision as of 13:27, 14 June 2007
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	'''Multichannel''' refers to audio streams with more than two channels. The most usual multichannel setups are 5.1 (five main channels: front center, front right, front left, rear right, rear left and one [[LFE\|Low Frequency Extension]] channel) and 6.1 (the five channels from 5.1 + back center).		'''Multichannel''' refers to audio streams with more than two channels. The most usual multichannel setups are 5.1 (five main channels: front center, front right, front left, rear right, rear left and one [[LFE\|Low Frequency Extension]] channel) and 6.1 (the five channels from 5.1 + back center).

	Formerly limited to movie theaters, multichannel audio has became popular since the introduction of the DVD video format. The two competitors to the title of CD successor, [[DVD-Audio]] and [[SACD]], can also offer multichannel content.		Formerly limited to movie theaters, multichannel audio has became popular since the introduction of the DVD video format. The two competitors to the title of CD successor, [[DVD-Audio]] and [[Super Audio Compact Disc\|SACD]], can also offer multichannel content.

	Some formats that support multichannel encoding are: [[AAC]], [[~~Ogg~~ Vorbis]], [[WMA]] Pro, [[AC3]], [[DTS]], [[FLAC]] and [[WavPack]].		Some formats that support multichannel encoding are: [[Advanced Audio Coding\|AAC]], (Ogg) [[Vorbis]], [[Windows Media Audio\|WMA]] Pro, [[AC3]], [[DTS]], [[Free Lossless Audio Codec\|FLAC]] and [[WavPack]].

	There's no standard channel mapping for multichannel streams, and each vendor (Microsoft, Dolby, MPEG, Xiph...) creates its own or copies it from another vendor.		There's no standard channel mapping for multichannel streams, and each vendor (Microsoft, Dolby, MPEG, Xiph...) creates its own or copies it from another vendor.
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	Multichannel recordings are often referred to as "Surround".		Multichannel recordings are often referred to as "Surround".

			= Test Streams =
	=Test Streams=

	[[User:rjamorim\|rjamorim]] prepared some test streams so that you can check if your surround setup speakers are positioned correctly. The [[AC3]] and [[DTS]] streams follow the standards set by the developers of such technologies (they were encoded with official encoders). The AAC stream was created with [[Compaact!]], and it's impossible to guarantee that all channels will be decoded at their correct places when playing back with different AAC decoders. If you can, test the AAC stream with Compaact's "official" players - Mpegable [http://www.mpegable.net/download/DS/mpegableDSdecoder-Setup.exe DirectShow Decoder] or [http://www.mpegable.net/download/Player/mpegablePlayer-Setup.exe Player].		[[User:rjamorim\|rjamorim]] prepared some test streams so that you can check if your surround setup speakers are positioned correctly. The [[AC3]] and [[DTS]] streams follow the standards set by the developers of such technologies (they were encoded with official encoders). The AAC stream was created with [[Compaact!]], and it's impossible to guarantee that all channels will be decoded at their correct places when playing back with different AAC decoders. If you can, test the AAC stream with Compaact's "official" players - Mpegable [http://www.mpegable.net/download/DS/mpegableDSdecoder-Setup.exe DirectShow Decoder] or [http://www.mpegable.net/download/Player/mpegablePlayer-Setup.exe Player].

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	* [http://wiki.hydrogenaudio.org/upload/test.m4a AAC stream] 58kB		* [http://wiki.hydrogenaudio.org/upload/test.m4a AAC stream] 58kB

			== See also ==
	==See also==
	* [[Stereo]]		* [[Stereo]]
	* [[Mono]]		* [[Mono]]

Rjamorim: /* Test Streams */

2006-11-27T14:08:19Z

Test Streams

← Older revision		Revision as of 14:08, 27 November 2006
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	=Test Streams=		=Test Streams=

	rjamorim prepared some test streams so that you can check if your surround setup speakers are positioned correctly. The [[AC3]] and [[DTS]] streams follow the standards set by the developers of such technologies (they were encoded with official encoders). The AAC stream was created with [[Compaact!]], and it's impossible to guarantee that all channels will be decoded at their correct places when playing back with different AAC decoders. If you can, test the AAC stream with Compaact's "official" players - Mpegable [http://www.mpegable.net/download/DS/mpegableDSdecoder-Setup.exe DirectShow Decoder] or [http://www.mpegable.net/download/Player/mpegablePlayer-Setup.exe Player].		[[User:rjamorim\|rjamorim]] prepared some test streams so that you can check if your surround setup speakers are positioned correctly. The [[AC3]] and [[DTS]] streams follow the standards set by the developers of such technologies (they were encoded with official encoders). The AAC stream was created with [[Compaact!]], and it's impossible to guarantee that all channels will be decoded at their correct places when playing back with different AAC decoders. If you can, test the AAC stream with Compaact's "official" players - Mpegable [http://www.mpegable.net/download/DS/mpegableDSdecoder-Setup.exe DirectShow Decoder] or [http://www.mpegable.net/download/Player/mpegablePlayer-Setup.exe Player].

	In this test, a synthetic voice will say out loud the position where each stream should be coming from.		In this test, a synthetic voice will say out loud the position where each stream should be coming from.

Pepoluan: spacing

2006-09-02T08:09:06Z

spacing

← Older revision		Revision as of 08:09, 2 September 2006
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	Multichannel recordings are often referred to as "Surround".		Multichannel recordings are often referred to as "Surround".


	=Test Streams=		=Test Streams=

Pepoluan: Many fixes, categorizing

2006-09-02T08:08:09Z

Many fixes, categorizing

← Older revision		Revision as of 08:08, 2 September 2006
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	'''''Multichannel''''' refers to audio streams with more than two channels. The most usual multichannel setups are 5.1 (five main channels: front center, front right, front left, rear right, rear left and one [[LFE\|Low Frequency Extension]] channel) and 6.1 (the five channels from 5.1 + back center).		'''Multichannel''' refers to audio streams with more than two channels. The most usual multichannel setups are 5.1 (five main channels: front center, front right, front left, rear right, rear left and one [[LFE\|Low Frequency Extension]] channel) and 6.1 (the five channels from 5.1 + back center).

	Formerly limited to movie theaters, multichannel audio has became popular since the introduction of the DVD video format. The two competitors to the title of CD successor, [[DVD-Audio]] and [[SACD]], can also offer multichannel content.		Formerly limited to movie theaters, multichannel audio has became popular since the introduction of the DVD video format. The two competitors to the title of CD successor, [[DVD-Audio]] and [[SACD]], can also offer multichannel content.
Line 9:		Line 9:
	Multichannel recordings are often referred to as "Surround".		Multichannel recordings are often referred to as "Surround".

			=Test Streams=

	rjamorim prepared some test streams so that you can check if your surround setup speakers are positioned correctly. The [[AC3]] and [[DTS]] streams follow the standards set by the developers of such technologies (they were encoded with official encoders). The AAC stream was created with [[Compaact!]], and it's impossible to guarantee that all channels will be decoded at their correct places when playing back with different AAC decoders. If you can, test the AAC stream with Compaact's "official" players - Mpegable [http://www.mpegable.net/download/DS/mpegableDSdecoder-Setup.exe DirectShow Decoder] or [http://www.mpegable.net/download/Player/mpegablePlayer-Setup.exe Player].		rjamorim prepared some test streams so that you can check if your surround setup speakers are positioned correctly. The [[AC3]] and [[DTS]] streams follow the standards set by the developers of such technologies (they were encoded with official encoders). The AAC stream was created with [[Compaact!]], and it's impossible to guarantee that all channels will be decoded at their correct places when playing back with different AAC decoders. If you can, test the AAC stream with Compaact's "official" players - Mpegable [http://www.mpegable.net/download/DS/mpegableDSdecoder-Setup.exe DirectShow Decoder] or [http://www.mpegable.net/download/Player/mpegablePlayer-Setup.exe Player].
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	In this test, a synthetic voice will say out loud the position where each stream should be coming from.		In this test, a synthetic voice will say out loud the position where each stream should be coming from.

	[http://wiki.hydrogenaudio.org/upload/test.ac3.zip AC3 stream] 101kB		* [http://wiki.hydrogenaudio.org/upload/test.ac3.zip AC3 stream] 101kB
			* [http://wiki.hydrogenaudio.org/upload/test.dts.zip DTS stream] 136kB
			* [http://wiki.hydrogenaudio.org/upload/test.m4a AAC stream] 58kB

	~~[http://wiki.hydrogenaudio.org/upload/test.dts.zip DTS stream] 136kB~~

	[~~http://wiki.hydrogenaudio.org/upload/test.m4a AAC stream~~] ~~58kB~~		==See also==
			* [[Stereo]]
			* [[Mono]]


	~~See also:~~ [[~~Stereo]], [[Mono~~]]		[[Category:Technical]]

Rjamorim at 14:25, 16 April 2005

2005-04-16T14:25:26Z

← Older revision		Revision as of 14:25, 16 April 2005
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	I prepared some test streams to check if your surround setup speakers are positioned correctly. The AC3 and DTS streams follow the standards set by the developers of such technologies (they were encoded with official encoders). The AAC stream was created with Compaact!, and ~~I can~~'t guarantee all channels will be decoded at their correct places when playing back with different decoders.		rjamorim prepared some test streams so that you can check if your surround setup speakers are positioned correctly. The [[AC3]] and [[DTS]] streams follow the standards set by the developers of such technologies (they were encoded with official encoders). The AAC stream was created with [[Compaact!]], and it's impossible to guarantee that all channels will be decoded at their correct places when playing back with different AAC decoders. If you can, test the AAC stream with Compaact's "official" players - Mpegable [http://www.mpegable.net/download/DS/mpegableDSdecoder-Setup.exe DirectShow Decoder] or [http://www.mpegable.net/download/Player/mpegablePlayer-Setup.exe Player].

	In this test, a synthetic voice will say out loud the position where each stream should be coming from.		In this test, a synthetic voice will say out loud the position where each stream should be coming from.

Jan at 13:54, 16 April 2005

2005-04-16T13:54:03Z

← Older revision		Revision as of 13:54, 16 April 2005
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	In this test, a synthetic voice will say out loud the position where each stream should be coming from.		In this test, a synthetic voice will say out loud the position where each stream should be coming from.

	[http://~~www~~.~~rarewares~~.org/~~wiki/files~~/test.ac3.zip AC3 stream] 101kB		[http://wiki.hydrogenaudio.org/upload/test.ac3.zip AC3 stream] 101kB

	[http://~~www~~.~~rarewares~~.org/~~wiki/files~~/test.dts.zip DTS stream] 136kB		[http://wiki.hydrogenaudio.org/upload/test.dts.zip DTS stream] 136kB

	[http://~~www~~.~~rarewares~~.org/~~wiki/files~~/test.m4a AAC stream] 58kB		[http://wiki.hydrogenaudio.org/upload/test.m4a AAC stream] 58kB


	See also: [[Stereo]], [[Mono]]		See also: [[Stereo]], [[Mono]]

Rjamorim: Fixed WavPack link

2005-04-16T03:36:16Z

Fixed WavPack link

← Older revision		Revision as of 03:36, 16 April 2005
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	Formerly limited to movie theaters, multichannel audio has became popular since the introduction of the DVD video format. The two competitors to the title of CD successor, [[DVD-Audio]] and [[SACD]], can also offer multichannel content.		Formerly limited to movie theaters, multichannel audio has became popular since the introduction of the DVD video format. The two competitors to the title of CD successor, [[DVD-Audio]] and [[SACD]], can also offer multichannel content.

	Some formats that support multichannel encoding are: [[AAC]], [[Ogg Vorbis]], [[WMA]] Pro, [[AC3]], [[DTS]], [[FLAC]] and [[~~Wavpack~~]].		Some formats that support multichannel encoding are: [[AAC]], [[Ogg Vorbis]], [[WMA]] Pro, [[AC3]], [[DTS]], [[FLAC]] and [[WavPack]].

	There's no standard channel mapping for multichannel streams, and each vendor (Microsoft, Dolby, MPEG, Xiph...) creates its own or copies it from another vendor.		There's no standard channel mapping for multichannel streams, and each vendor (Microsoft, Dolby, MPEG, Xiph...) creates its own or copies it from another vendor.

62.61.135.181 at 15:12, 26 March 2005

2005-03-26T15:12:01Z

@@ Line 1: / Line 1: @@
-'''Multichannel''' means that audio stream contains more than two audio channels.
+'''''Multichannel''''' refers to audio streams with more than two channels. The most usual multichannel setups are 5.1 (five main channels: front center, front right, front left, rear right, rear left and one [[LFE|Low Frequency Extension]] channel) and 6.1 (the five channels from 5.1 + back center).
-It is not supported by the following formats: [[MP2]], [[MP3]] ([[MP3]] supports it in theory but there exist no support for it), [[Musepack]].
+Formerly limited to movie theaters, multichannel audio has became popular since the introduction of the DVD video format. The two competitors to the title of CD successor, [[DVD-Audio]] and [[SACD]], can also offer multichannel content.
-It ''is'' supported by [[Ogg Vorbis]], [[AAC]].
+Some formats that support multichannel encoding are: [[AAC]], [[Ogg Vorbis]], [[WMA]] Pro, [[AC3]], [[DTS]], [[FLAC]] and [[Wavpack]].

Jan at 22:02, 4 February 2005

2005-02-04T22:02:50Z

← Older revision		Revision as of 22:02, 4 February 2005
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	'''Multichannel''' means that audio stream contains more ~~that~~ two audio channels.		'''Multichannel''' means that audio stream contains more than two audio channels.

	It is not supported by the following formats: [[MP2]], [[MP3]], [[Musepack]].		It is not supported by the following formats: [[MP2]], [[MP3]] ([[MP3]] supports it in theory but there exist no support for it), [[Musepack]].

	It ''is'' supported by [[Ogg Vorbis]], [[AAC]].		It ''is'' supported by [[Ogg Vorbis]], [[AAC]].

Yandexx at 11:18, 4 February 2005

2005-02-04T11:18:46Z

New page

'''Multichannel''' means that audio stream contains more that two audio channels.

It is not supported by the following formats: [[MP2]], [[MP3]], [[Musepack]].

It ''is'' supported by [[Ogg Vorbis]], [[AAC]].