Advanced Audio Coding

From MultimediaWiki
Revision as of 07:11, 23 October 2008 by Compn (talk | contribs) (add fourcc, link to android aac decoder, fix formatting, add samples)
Jump to navigation Jump to search

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.