Welcome on the biggest MPEG audio source codes area avaible on the Internet.
    You'll find here source codes dealing with MPEG-1/2/2.5 Layer 1/2/3, MPEG-2 AAC and MPEG-4. There are also source codes for several user interfaces.

Encoding engines source codes

Decoding engines source codes

Graphical user interfaces and visualization source codes

Miscellaneous source codes

Technical audio papers

MPEG Layer I/II/III frame header documentation