Directory: Top/Computers/Multimedia/Music_and_Audio/Audio

Top / Computers / Multimedia / Music_and_Audio / Audio_Formats / MPEG-4 /

MP4-SA Developer Tools
John Lazarro and John Wawrzynek from the CS Division, UC Berkeley provide tutorials, downloads, manuals and links related to the Structured Audio format.
http://www.cs.berkeley.edu/~lazzaro/sa/
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Structured Audio Open Group
The main goal of the SAOG was to implement Structured Audio (SA) in open source applications offering a portal for their users with forum and downloads of samples and software.
http://lsiwww.epfl.ch/saog/
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Fraunhofer IIS
Information about the different parts of MPEG-4 Natural or General Audio (GA) from one of the inventors of these formats, see also their page about MPEG-2 AAC.
http://www.iis.fraunhofer.de/amm/techinf/mpeg4/audio.html
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Doom9
Besides this forum for audio codecs there are others for container formats and video encoding in general with FAQs.
http://forum.doom9.org/forumdisplay.php?forumid=11
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Hydrogen Audio
Forum about audio coding in general with two separate boards for AAC.
http://www.hydrogenaudio.org/
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Mp4-tech
The web archive of the public MPEG Industry Forum mailing list with many knowledgeable participants from companies like FhG, Apple and Microsoft.
http://lists.mpegif.org/pipermail/mp4-tech/
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Coding Technologies
Company that invented Spectral Band Replication (SBR) and combined it with MP3 (mp3PRO) and AAC (aacPlus or HE AAC).
http://www.codingtechnologies.com/
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Via Licensing
Patent pool administrator for AAC with FAQs and overviews of royalty fees for commercial implementations.
http://www.vialicensing.com/
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QuickTime development
Apple offers technical FAQs, knowledge base and publicly available documentation files including the MOV file format.
http://developer.apple.com/quicktime/
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Mayah
Hard- and software company for professional broadcasting products with AAC/MP4 support.
http://www.mayah.com/
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