MPEG Audio Decoder (MAD) is a GPLlibrary for decoding files that have been encoded with an MPEGaudio codec. It was written by Robert Leslie and produced by Underbit Technologies. It was developed as a new implementation, on the ISO/IEC standards.
It consists of libmad, a software library, and madplay, a command-line program for MP3 playback. libmad is notable for using only fixed-point arithmetic while madplay is notable for its ReplayGain support.
^ ab"MAD". Freecode. Retrieved November 3, 2011. MAD is a high-quality MPEG audio decoder capable of 24-bit output. All computations are performed with fixed-point integer arithmetic, making it ideal for systems without a floating-point unit. The implementation is entirely new, based on the ISO/IEC standards.
^"MPEG source codes". mp3-tech.org. Retrieved November 3, 2011. MAD is an mpeg-1 decoder using only integer computation.
^"madplay". Ubuntu Manpage Repository. Archived from the original on April 4, 2012. Retrieved November 3, 2011. Among the special features of MAD are 24-bit PCM resolution and 100% fixed-point (integer) computation.