Difference between revisions of "Advanced Audio Coding"

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(add fourcc, link to android aac decoder, fix formatting, add samples)
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*http://www.3gpp.org/ftp/specs/html-info/26-series.htm
*http://www.3gpp.org/ftp/specs/html-info/26-series.htm
*ftp://ftp.tnt.uni-hannover.de/pub/MPEG/audio/mpeg4/
*ftp://ftp.tnt.uni-hannover.de/pub/MPEG/audio/mpeg4/
*[[AAC Reference Software]]


[[Google]] has opensourced Android, which includes an Apache 2.0 licensed aac decoder:  
[[Google]] has opensourced Android, which includes an Apache 2.0 licensed aac decoder:  

Revision as of 18:48, 15 February 2009

Specification and reference source links.

Google has opensourced Android, which includes an Apache 2.0 licensed aac decoder:

Intel has source for its IPP based AAC decoder:

Real Networks has source for its Helix AAC fixedpoint decoder here:

Usually stored in an MP4 container.

See also Understanding AAC.

Extensions

AAC+

AACPlus (a.k.a. AAC+) is LC-AAC + SBR (Spectral Band Replication) and aacPlus v2 means LC-AAC + SBR (Spectral Band Replication) + PS (Parametric Stereo). Standard LC-AAC decoders can decode aacPlus encoded files/streams but without SBR and PS you do not get the full quality.

GAIN headers

See http://mp3gain.sourceforge.net and MP3 GAIN header.