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What's the difference...

Forums - Discs & Movies - What's the difference... 

10th October 2005 17:48  #1

floyd dylan Banned Join Date: April 2004 Location: United Kingdom Posts: 913
What's the difference...
...between DTS ES and EX?  Also does it require you to have an extra speaker if so where would you put it?

Please don't blind me with science, just give me the simple facts.



10th October 2005 18:37  #2

Adrian Senior Member Join Date: September 2005 Location: United States Posts: 1,305
Floyd,

My basic understanding is that EX is a discrete channel, meaning that there is information specific for that channel in the encoding.  I think ES is a combination of the left and right surround channel that is broadcast into a center surround channel.

10th October 2005 18:55  #3

Jonny "Me You" Senior Member Join Date: March 2004 Location: Canada Posts: 2,863
Adrian is essientially correct.

Dolby Digital EX means 7 channels of discreet sound. One more beyond the standard 5.1 - which is directed at the left channel, right channel, center channel, left surround and right surround channels with one going to the subwoofer.

An EX track has room for one more channel placed between the rear left and right surround channels aka rear center. The signal is not sent directly there, it is derived from information in the left and right surround signals as interpreted by an appropriate decoder in a receiver.

DTS ES is the exact same thing, only with DTS sound in the place of Dolby Digital.

11th October 2005 6:25  #4

floyd dylan Banned Join Date: April 2004 Location: United Kingdom Posts: 913
Ahhh because my lass is FINALLY buying me a sound system.

Not one of those hugely expensive things, but a decent one in anycase, and I just wondered if there was any reviews for it.

Sony HT-DDW870 Home Cinema System

Total 720W (RMS) output power
Dolby® Digital EX, DTS-ES, DTS 96/24,
Dolby® Pro Logic® II X decoder
RDS tuner
6 satellite speakers and 120W active
subwoofer
A/V Sync
Multi Stereo

Image too big for layout

12th October 2005 3:27  #5

Worst Nightmare Senior Member Join Date: July 2002 Location: Australia Posts: 6,706 Send a message via AIM to Worst Nightmare Send a message via ICQ to Worst Nightmare Send a message via MSN to Worst Nightmare Send a message via Yahoo to Worst Nightmare Send a message via Google to Worst Nightmare
Wish they would start bringing out the 10.2 stuff...

12th October 2005 12:21  #6

Chris Gould Editor Join Date: May 2001 Location: United Kingdom Posts: 7,115 Send a message via ICQ to Chris Gould Send a message via MSN to Chris Gould Send a message via Skype to Chris Gould
Actually Dolby EX is not discrete - the 7th channel (middle rear) is matrixed (derived from the rear left and right channels). DTS ES is available as both matrixed and discrete, so it's 'technically' superior to Dolby in that respect. However, there's no real way of knowing if a track is matrixed or discrete prior to buying it (unless it's mentioned in a review).

12th October 2005 13:31  #7

floyd dylan Banned Join Date: April 2004 Location: United Kingdom Posts: 913
Can you tell the difference when listening to a particular track though?  

It's not one of those Spinal Tap moment where metaphorically it goes up to 11, when really you can just make that particular one louder?

12th October 2005 13:53  #8

Chris Gould Editor Join Date: May 2001 Location: United Kingdom Posts: 7,115 Send a message via ICQ to Chris Gould Send a message via MSN to Chris Gould Send a message via Skype to Chris Gould
I suppose it depends on the listener. A lot of people can't hear PAL speed-up, whereas I can.

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