Quote:No. DTS-HD Master Audio is a codec (COmpression DECompression). Codecs are really just types of zip files used to save space. A large PCM soundtrack is fed into the encoder, which zips it up to reduce the size. The decoder unzips it, turning it back into a PCM soundtrack. DD 5.1, DTS, TrueHD, and dts-MA are the four data compression codecs commonly used to save space when putting movie soundtracks on DVDs and Blu-rays.
ProLogic IIx is a signal processor that acts on the PCM soundtrack to modify it. PLIIx doesn't know whether the PCM was once zipped up using either a Dolby or DTS codec. The same goes for DTS Neo:6, which is the DTS version of PLIIx. Both of those DSPs and many others from Dolby, DTS, and other companies all act to modify PCM, which is the fundamental digital format used with all home entertainment equipment.
When you have rear speakers in a 7.1 system and play 5.1 content, you need to tell the processor to use a DSP to expand 5.1 to 7.1. The owner's manual will list the choices that you can use. They all work a little differently. PLIIx, for example, produces stereo rear channels while DTS Neo:6 produces a mono rear channel that is fed to both rear speakers.
Edited by BIslander - 5/4/13 at 10:49am