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MP4 Structured Audio: Developer Tools MP4 Structured Audio: Developer Tools- John Lazarro and John Wawrzynek from the CS Division, UC Berkeley provide tutorials, downloads, manuals and links related to the Structured … Hydrogen Audio Hydrogen Audio- Forum about audio coding in general with two separate boards for AAC. Examples of Synthesized Speech Examples of Synthesized Speech- Many TTS demos in several languages from different systems with links to their homepages. Applications of Digital Signal Processing to Audio and Acoustics Applications of Digital Signal Processing to Audio and Acoustics- Book by Mark Kahrs and Karlheinz Brandenburg. Principles of digital audio Principles of digital audio- Book by Ken C. Pohlmann. ISO/IEC ISO/IEC- Publicly available standards from the International Organization for Standardization including MPEG-4 with 14496-5 containing the Audio, Visual and Systems parts. Audio Research Labs Audio Research Labs- ARL is a commercial laboratory involved in subjective quality assessment methods like preparing and analyzing codec comparisons for 3GPP. Digital Radio Mondiale Digital Radio Mondiale- DRM is a world-wide initiative to use analog AM radio for digital sound and services implementing aacPlus at very low bitrates, often mixed up with Digital… Tuner2 Tuner2- List of internet radio stations using aacPlus for their low bitrate streams, among them SomaFM.com and Boomer Radio. Machine Listening Machine Listening- 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. AES Publications AES Publications- All available articles and documents from the Journal of Audio Engineering Society with search tool including a CD about coding artifacts. Mayah Mayah- Hard- and software company for professional broadcasting products with AAC/MP4 support. QuickTime development QuickTime development- Apple offers technical FAQs, knowledge base and publicly available documentation files including the MOV file format. Via Licensing Via Licensing- Patent pool administrator for AAC with FAQs and overviews of royalty fees for commercial implementations. Doom9 Doom9- Besides this forum for audio codecs there are others for container formats and video encoding in general with FAQs. Mobiledia Mobiledia- Reviews, articles and forum discussions about cell phones capable of AAC/MP4/3GP playback (also called "iTunes" format sometimes, use the site search).