References


In addition to the ISO reference documentation ($120 from ANSI in the US),  here are some less detailed but more infomative articles.

www.mp3tech.org    In the programmers' corner you can find links to several papers.

NDTC Speech and Audio Coding Page    This page contains a detailed and very well written review article on psycho-acoustics.

Davis Pan has a couple of usefull overviews of MPEG audio encoding:
http://ftp.digital.com/pub/Digital/DECinfo/DTJ/v5n2/Digital_Audio_Compression_01oct1993DTJA03SC.txt
http://www.bok.net/~pan

Here are some papers by Frank Baumgarte:
http://www.tnt.uni-hannover.de/project/coding/audio/perception/publications.html
The paper by Baumgarte,  Ferekidis and Fuchs describes an alternative psycho-acoustic model for MPEG encoding.

Here is a complete (non MPEG) MDCT based audio encoder (MUS420 class project).  The assocated paper gives some good information on audio encoding.
http://www-ccrma.stanford.edu/~bosse/

Here is some very detailed documentation on a parallel  layer II encoder:
http://www.ece.miami.edu/~fernando/html/thesis/thesis.html

A good paper on mid/side stereo encoding:
Johnston and Ferreira, Sum-Difference Stereo Transform Coding, Proc. IEEE ICASSP (1992) p 569-571.

A lot in the MPEG2-AAC can also be used in MP3:
Bosi et al. "ISO/IEC MPEG-2 AAC", J. Audio Eng. Soc. 45 (1997) p 789-814.

And the original MPEG1 reference:
Brandenburg & Stoll, "ISO-MPEG-1 Audio: A Generic Standard for Coding of High-Quality Digital Audio", J. Audio Eng. Soc 42 (1994) p 780-792.

Some original papers on the psycho-acoustics used by MPEG:
Johnston, "Transform Coding of Audio Signals Using Perceptual Noise Criteria", IEEE J. Selected Areas Communications, (1988).
Brandenburg and Johnston, "Second Generation Perceptual Audio coding: They Hybrid Coder", AES 89th Convention, 1990.