Originally Posted by MSmith83
Both codecs are compressed and loseless. The only difference is the bitrate.
This is incorrect. DTS-HD HR is
lossy, but it supports a higher maximum bitrate than standard DTS (1.5Mbps vs. 3Mbps~HD-DVD or 6Mbpd~BD) and supports up to 7.1 channels instead of "only" 6.1(DTS-ES).
DTS-HD MA is effectively uncompessed but uses a 2:1 data compession ratio along with metadata to allow the signal to be uncompressed during decoding. This method achieves identical results to that of LPCM but at half the bitrate, and is practically identical to the methods used for DD TrueHD and MLP on DVD-A.