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MP4-SA Developer Tools - http://www.cs.berkeley.edu/~lazzaro/sa/
John Lazarro and John Wawrzynek from the CS Division, UC Berkeley provide tutorials, downloads, manuals and links related to the Structured Audio format. |
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Via Licensing - http://www.vialicensing.com/
Patent pool administrator for AAC with FAQs and overviews of royalty fees for commercial implementations. |
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http://www.mayah.com/ - http://www.mayah.com/
Hard- and software company for professional broadcasting products with AAC/MP4 support. |
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http://www.tuner2.com/ - http://www.tuner2.com/
List of internet radio stations using aacPlus for their low bitrate streams, among them SomaFM.com and Boomer Radio. |
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Mobiledia - http://www.mobiledia.com/
Reviews, articles and forum discussions about cell phones capable of AAC/MP4/3GP playback (also called "iTunes" format sometimes, use the site search). |
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MPEG4.net - http://www.mpeg4.net/
Resource for news, information and products about MPEG-4, H.264, Windows Media, High-Definition, Streaming Media and related technologies. |
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Nokia developer forum - http://discussion.forum.nokia.com/forum/
Platform to support the implementation of their software SDKs including AAC/MP4. |
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Fraunhofer IIS - http://www.iis.fraunhofer.de/amm/techinf/mpeg4/audio.html
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. |
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Roberto's listening tests - http://www.rjamorim.com/test/
Provides public group comparisons of several AAC codecs and other formats at different bitrates. |
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Introduction to Digital Audio Coding and Standards - http://www.springer.com/east/home?SGWID=5-40109-22-33356358-0
Book by Marina Bosi and Richard E. Goldberg. |
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Telos Systems - http://www.telos-systems.com/techtalk/
Hardware manufacturer of the Zephyr ISDN codecs for radio and television broadcasters providing articles and brochures about different AAC implementations. |
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Machine Listening - http://web.media.mit.edu/~tristan/Classes/MAS.945/technical.html
Reading list for an MIT seminar, most of the mentioned publications are directly available on their web server or linked to Amazon's book section. |
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Audio Research Labs - http://www.audioresearchlabs.com/
ARL is a commercial laboratory involved in subjective quality assessment methods like preparing and analyzing codec comparisons for 3GPP. |
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EE Times - http://www.eet.com/story/OEG20011218S0048/
"Meeting MPEG-4 advanced audio coding requirements", knowledgeable article summarizing the most important properties of AAC for hardware playback. |
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IBM Composite Media Group - http://researchweb.watson.ibm.com/mpeg4/Projects/
Overview of their implementation and contribution to the MPEG-4 standard, especially for the Systems part. |