Topic: More Then 5.1? (Read 75 times)

Jumpy_Beans · « **on:** November 07, 2003, 04:20:00 PM »

ok im gettin an HDtv and i was thinking of getting the monster cable so i could hook it up as component... but i have a 7.1 dolby digital right now and i was wondering if the xbox could use all of it or would it just read 5.1 of it?

spillage · « **Reply #1 on:** November 07, 2003, 04:43:00 PM »

The quick answer to your question is NO! In the domestic arena 7.1 does not exist. Your amp or for that matter an amp or processor sold on the market cannot decode true 7.1. The reason the format does exist in the cinema in the form of SDDS. This is soley owned by Sony and they are not planning to license it to the dosmestic market any time soon. The current compression algorythms for DVD cannot cope with * discrete channels anyway. DTS are the closest with DTS ES discrete which is a true 7 channel or 6.1 channel protocol. Your xbox like all of them in fact will read all DD and DTS formats it is your amp decode engine that does the work. Out of interest the movies U-571 on DVD actual contains what I believe to be a matrixed (aka Pro-Logic) 5 channel front soundstage. You cannot decode it thought without additional equippment and even then it's not discrete.

Mr Ed · « **Reply #2 on:** November 07, 2003, 08:34:00 PM »

I'm sure what he meant was DTS ES which is 7.1

And I guess that a game encoded with 7.1 would play out with 7.1, but I'm not aware of any DTS ES encoded games.

spillage · « **Reply #3 on:** November 08, 2003, 04:34:00 AM »

DTS ES is NOT 7.1 it is 6.1 7.1 only exist in cinema equipped to play SDDS soundtracks. There is NO 8 channel discrete decode engine other than SDDS available.

Jumpy_Beans · « **Reply #4 on:** November 08, 2003, 10:05:00 AM »

sorry im not the a/v wiz. i dont own it my dad does. and your rite it is dolby digital ex/dts es. and my dad bought 6.1 speakers but ordered another one. and all i was wondering was could the xbox decode the "7.1"...

spillage · « **Reply #5 on:** November 08, 2003, 01:42:00 PM »

jm 007 dd ex is not 6.1 but actual uses the dolby prologic analogue matrixing system to add a centre rear channel. dd ex is actually called 5.1+1m.

Mr Ed · « **Reply #6 on:** November 08, 2003, 06:05:00 PM »

Ok, I stand corrected. I don't know what I was thinking about 7.1, of course adding a center rear channel only adds 1 channel making DTS ES 6.1.

What's the format of the one that not only adds a center rear, but a left and right sides (so 8 speakers not including a sub)?

Madgame · « **Reply #7 on:** November 08, 2003, 08:42:00 PM »

I thought THX-EX was 7.1, NO?

spillage · « **Reply #8 on:** November 09, 2003, 05:41:00 AM »

THX is not a format but a standard set down by George and the gang at Sky Walker. It stands for Thomas Holminsons eXperiment. It make three adjustment to any sound track except DTS ES 6.1, there is no standard yet, as far as I am aware. The whole idea of the THX programmes is to try and equal a large auditorium in a 3000sq ft space. EX is 5.1+1m.

spillage · « **Reply #9 on:** November 10, 2003, 02:31:00 AM »

Manufacturers use varying ways to give the customer extra. They do it using their own custom DSP engines. The best example of this, although not necassarilly the best sounding is Yamaha who currently convert a 5.1 signal into '9.1'. Rememeber 7.1, 8.1 and 9.1 do NOT exist as discrete formats. Yamaha, in this example, have 5 front speakers, a sub, and the 4 rears. Apart from the genuine 6 channels coming in the rest they make up. The quality of the effect varies from source material to source material.

Pro-Logic 2 is currently, to my knowledge, the most advanced DSP engine available, alongside the likes of Lexicons excellent Logic 7.

DataBitz · « **Reply #10 on:** November 26, 2003, 02:52:00 PM »

I have a DTS-ES AMP and have several DVD's which I watch using the XBOX DVD Player, and get sound out the centre rear speaker (6th speaker).

jC! · « **Reply #11 on:** November 26, 2003, 04:41:00 PM »

There is a way to upmix the 5.1 DTS or DD information from the Xbox to 7.1, though it is not TRUE 7.1, there's no real loss in quality, just a fuller sound as it matrixs the front and surrounds into the 2 side channels (usually Dipol speakers).

Most high-end revievers, such as Rotel, Linn, and Pioneer's Elite series support upmixing 5.1 to 7.1 and Dobly just relased a new system called Dolby ProLogicIIx which will upmix 2 channals and 5.1 channels to 7.1 using matrixed algorythem. Though ProLogicII(x) tends to soften audio information, it is not a bad thing, but it may not be the effect you prefer.

jC! · « **Reply #12 on:** November 26, 2003, 04:44:00 PM »

QUOTE (DataBitz @ Nov 26 2003, 04:52 PM)

I have a DTS-ES AMP and have several DVD's which I watch using the XBOX DVD Player, and get sound out the centre rear speaker (6th speaker).

Your reciever, or amp, is simply matrixing information from your Right and Left surrounds in to that Rear Center channel to create a fuller sound. (Just as PLII takes the Front Left and Right channels and sends certin frequencies, mostly vocal, to the central channel)

DTS-ES is simply DTS's version of Dobly's PLII, but with an added 6th channel. (ES stands for Extended System) Though it can also decode DVD's with decrete DTS-ES

Basicly, DTS-ES combines PLII and DDeX into one system

rjsachse · « **Reply #13 on:** November 26, 2003, 05:41:00 PM »

so were is the 7th speaker i have a 6.1 and it has a center front and back with left right front and back and two center speakers with one sub so were is the 7th

Mr Ed · « **Reply #14 on:** November 26, 2003, 07:06:00 PM »

Depends on the system. My Yamaha amp has extra left and right front speakers. So including the center, 5 speakers in the front.

Author Topic: More Then 5.1? (Read 75 times)