True dd & dts mst

[dholmes]

With true dd & dts mst if you want to listen to another surround mode like pllx2 or something like that are you still listening to true dd & dts mst? thanks

[billbillw]

I assume you are thinking about how to fill in your back channels (in 7.1 system) when the TrueHD or DTS HD Mst is only a 5.1 track. Nobody likes their speakers sitting there dead ;)

This is a subject of debate, but from what I've gleaned by the people who know (over at AVSForum), you are still listening to lossless audio when PLIIx is engaged. Apparently, PLIIx does not affect the front 3 channels at all. It merely blends the rear channels to fill in the back channels and it does it without sacrificing quality.

So I say yes. Do it. I do, and it sounds great.

[dholmes]

Thanks

[Sansui]

I have a Panny DVD player that outputs DSS and DTS for audio. Is there any difference between "regular" DSS/DTS and TrueHD and DTS HD? My Denon supports PLIIx (I believe) and would like to "fire" off my two back surround speakers.

[cheddar]

Regular DD and DTS are compressed files that are missing information contained in the original studio master in order for them to fit in a smaller space on the disk. TrueHD and DTS-HD MA are also compressed files that decompress to the original uncompressed PCM master. So they can achieve much higher fidelity to the original source. Much like the difference between a regular CD and a DVD-audio disk. And TrueHD and DTS-HD MA are capable of even better quality than a DVD-audio disk. But TrueHD and DTS-HD MA are not available on regular DVDs and aren't something that a processor can add in a receiver or pre. They must be recorded and encoded on the original blu-ray disk.

[Erik Tracy]

I have a Panny DVD player that outputs DSS and DTS for audio. Is there any difference between "regular" DSS/DTS and TrueHD and DTS HD? My Denon supports PLIIx (I believe) and would like to "fire" off my two back surround speakers.

Yes there is a difference.

"Standard" DD and DTS are considered "lossey" audio compression schemes so that when stored on your DVD disc, the audio portion takes up less space than the original uncompressed PCM audio master.

But "lossey" means that, in general, there will be a noticable difference in sound quality because of the compression - so you gain space on the disk to store data, but you loose some of the fidelity.

The newer codecs for DTS-MA and TrueHD are considered "lossLESS" - meaning that there is supposed to be no audible difference between the compressed audio tracks and that of the uncompressed PCM original audio track (your avr or blu-ray player will uncompress the DTS-MA or TrueHD track and convert the compressed tracks back to uncompressed PCM).

As I understand it - the standard DVD format will not support DTS-MA or TrueHD - that is only in HD-DVD or Blu-ray.

You'll have to upgrade your standard DVD Panny player to Blu-ray (or HD-DVD if you want....) to get the audible benefits of the newer lossless codecs.

[dholmes]

Thanks again with my set-up I have back channels that arent getting used unless its dts ma 7.1,true dd & dts master sounds great but I was wanting to know if your still getting true dd & master dts when you change the surround mode.

[ward91]

i am slightly confused:confused:, i have an xbox 360 and a obsolete (£20) hd dvd player.
i didn't expect the sound to work (dolby plus) as it is optical from the xbox to my avr.i have a Cambridge audio 540r , i don't think this decodes the new "plus" does it??( i get dolby digital 5.1 out. )

i don't know but when you plug the xbox sound in the signal straight away goes to Dolby digital, i think that maybe it always puts out DD but could be playing a mp3 or a cd ect.

:confused::confused: