DTS-HD Master Audio
LOSSLESS AUDIO CODEC FOR HOME THEATER, EXTENDED FROM THE LOSSY DTS CODEC
DTS HD; DTS-HD; DTS-MA; DTS HD Master Audio; DTS-HD MA
DTS-HD Master Audio (DTS-HD MA; known as DTS++ before 2004) is a multi-channel, lossless audio codec developed by DTS as an extension of the lossy DTS Coherent Acoustics codec (DTS CA; usually itself referred to as just DTS). Rather than being an entirely new coding mechanism, DTS-HD MA encodes an audio master in lossy DTS first, then stores a concurrent stream of supplementary data representing whatever the DTS encoder discarded.