Quote:
Originally Posted by
AZHTGeek 
Anyone?
Here you go some info I leached from highdefdigest
DTS-HD High Resolution
What it is: Similar to Dolby Digital Plus, DTS-HD High Resolution is an enhancement over standard DTS that offers higher bit rates and better compression. DTS-HD HR is also encoded as an extension to a "core" DTS track. (Note that DTS-HD HR is sometimes referred to as just "DTS-HD", which can be confusing and possibly misleading).
Level of support: Since this codec is also optional on Blu-ray, many players will only extract the 1509 kb/s DTS core and ignore the extension.
Examples of discs that use it: 'Basic Instinct', 'Total Recall'.
How to get it:
Toslink or Coaxial SPDIF - Because SPDIF cannot transmit a full DTS-HD HR signal, the player will extract the DTS core and send the bitstream for that instead.
HDMI - If the player does not support DTS-HD HR, it will extract the DTS core, replicating the DTS listing above. Some players may decode the DTS-HD HR to PCM and transmit it over any version of HDMI. Other players will instead transmit the DTS-HD HR bitstream to a receiver for decoding (this requires HDMI 1.3).
Multi-channel analog - Either the Blu-ray player will extract and decode the DTS core, or (on some models) will decode the full DTS-HD HR and convert it to analog.
DTS-HD Master Audio
What it is: Another lossless audio codec similar to Dolby TrueHD. The difference between the two is that DTS-HD MA is built in a core+extension configuration (just like DTS-HD HR). Although a DTS-HD MA track takes up more disc space than a TrueHD track, it does not require a secondary standard track for backwards compatibility. Since both DTS-HD MA and TrueHD are lossless, they are both 100% identical in quality to the studio master, and hence identical in quality to each other.
Level of support: Like DTS-HD HR, Master Audio is optional on the Blu-ray format. If the player does not support DTS-HD MA, it can extract the standard DTS core.
Examples of discs that use it: Almost all titles from Fox Home Entertainment.
How to get it:
Toslink or Coaxial SPDIF - SPDIF cannot carry a DTS-HD MA signal. When using this connection type, the player will extract the standard DTS core instead and transmit that as a bitstream.
HDMI - If the player does not support DTS-HD MA, it will extract the DTS core. Some players may decode the DTS-HD MA to PCM and transmit it over any version of HDMI. Other players will instead transmit the DTS-HD MA bitstream to a receiver for decoding (HDMI 1.3 required).
Multi-channel analog - Either the Blu-ray player will decode the standard DTS core, or (on some models) will decode the DTS-HD MA and convert it to analog.
At the time of this writing, only one Blu-ray disc player (the Samsung BD-P1400) supports the transmission of a DTS-HD Master Audio bitstream over HDMI 1.3. No current Blu-ray disc players will yet decode the DTS-HD MA track to PCM internally. All other players are limited to extraction of the standard DTS core. This situation is expected to change in the near future as more player models are released, and manufacturers issue firmware updates to existing players.
Dolby TrueHD
What it is: Dolby TrueHD is a "lossless" compression codec. Although it is compressed to take up less disc space than a PCM track, once decoded it is bit-for-bit identical to the studio master (at either 16-bit or 24-bit resolution, at the discretion of the studio). It may help to think of it like a ZIP file that holds a PCM track. Once you unZIP the file, you get a 100% identical copy of the original PCM, without compromising any sound quality.
Level of support: TrueHD is an optional format on Blu-ray. And since TrueHD is not built in a core+extension configuration, Blu-ray discs that contain a TrueHD track are also required to contain a standard Dolby Digital AC-3 track for compatibility with players that don't support TrueHD.
Examples of discs that use it: 'Ghost Rider', 'The Fifth Element' (Remastered).
How to get it:
Toslink or Coaxial SPDIF - SPDIF cannot carry a TrueHD signal. If using this connection type, the player will automatically revert to playing back the standard Dolby Digital AC-3 track instead.
HDMI - If the player does not support TrueHD, it will revert to the standard Dolby Digital track. Some players may decode the TrueHD to PCM and transmit it over any version of HDMI. Other players will instead transmit the TrueHD bitstream to a receiver for decoding (HDMI 1.3 required).
Multi-channel analog - Either the Blu-ray player will decode the standard Dolby Digital track, or (on some models) will decode the TrueHD and convert it to analog.
Cheers,
Ray