What the difference between Dolby Digital and DTS?
The primary difference is that the data rate of DTS (1400 kb/s) is higher than that of Dolby Digital (384 kb/s). With good playback equipment, a DTS soundtrack can sound distinctly better. In addition, the DTS 6.1 channel system uses six discrete channels, while the sixth channel in the Dolby Digital 6.1 system is a derived channel (i.e., it is derived from the audio information in the other five channels).