Originally Posted by FilmMixer
Larry.... you are correct... remapping is used to take 7.1 soundtracks and remap them for 5.1 playback or one of the other 7.1 speaker configurations or the other way around... it doesn't work the other way around.
Thanks for the response.
As Chris points out, the DTS documentation that I have been reading on their website may not be current. Nevertheless, I haven't found anything that says DTS Speaker Re-mapping remaps 7.1 sources configurations to 5.1 layouts, (or re-maps from 5.1 sources to 7.1 layouts). Of the 7 configurations shown on the DTS website
I have seen two that look like 5.1 configurations, but they have two extra height channels for a total of 7.1. So everything I've read is confined to 7.1 to 7.1 channels with different physical layouts between the mixing and the playback environment.
Obviously, 7.1 AVR/prepros provide the option of selecting the number of speakers, and if a source signal is downmixed to a 5.1 configuration I didn't think that function had anything to do with DTS Speaker Re-mapping.
Have your contacts with DTS indicated that DTS intends to extend the functionality of Speaker Re-mapping to 5.1 configurations, or have you seen any additional documentation on this subject?
Unfortunately, the remarks made by a senior Panasonic engineer seems to be contradictory regarding the issue of downmixing in the context of DTS Speaker Re-mapping.Posting #5810
Originally Posted by boylan13
Let me provide another sentence or two from Panasonic since you are embellishing my words like there's no tomorrow:
"When the intended loudspeaker layout does not match the actual loudspeaker layout of the listening space, DTS-HD decoder redirect or divide mismatched channel signal to fit actual loudspeaker layout. This function is called Speaker Remapping. Please assume it as a kind of extended downmixing function.
The remapping coefficients are fixed by DTS. In the case of remapping from standard 5.1 channel layout to standard 7.1 channel layout, Ls/Rs signals are remapped to Lss/Rss and Lsr/Rsr..."
And the rest you've already seen. This is not Panasonic Speaker Remapping. This is DTS Speaker Remapping. At least according to a guy who should know a lot more about it than we do.
The problem with this statement is that in the first sentence the engineer represents the "Speaker Remapping" as an extended downmixing function. However, the word downmix usually means reducing the number of channels on playback, but then in the next sentence he describes the Panasonic player "amplification" function which derives 7.1 channels from a 5.1 source, just the opposite of downmixing.