TTA is a simple lossless audio compressor.

TTA performs lossless compression on multichannel 8, 16, 24 bit integer
and 32 bit IEEE floating-point data of the Wav audio files.

The compression size will generally range between 30-70% of the original.
TTA format supports both of ID3v1 and ID3v2 information tags.

WWW: http://www.true-audio.com/