AVS Forum banner

Status
Not open for further replies.
1 - 4 of 4 Posts

·
Registered
Joined
·
2,700 Posts
Discussion Starter · #1 ·
Do Dolby Digital - EX receivers automatically fill the 6 or 7th channel on non Dolby Digital - EX DVD's with the same surrond information that is present on the sound channels? Or is this dependent on how each receiver handles this situaion?
 

·
Registered
Joined
·
154 Posts
First off the disk must actually have Ex encoded in order to play back a true six or seventh channel. remeber becasue the seventh channell is derived you can either use it or not (depends on your setup). Secondly I beleive on most seven channel receivers you can tell the receiver to always play material through the two rear channells if you like. It may or may not be true six channell material but the derived effect may be desireable.
 

·
Registered
Joined
·
12,252 Posts
Quote:
Originally posted by barhoram
Do Dolby Digital - EX receivers automatically fill the 6 or 7th channel on non Dolby Digital - EX DVD's with the same surrond information that is present on the sound channels? Or is this dependent on how each receiver handles this situaion?
Depending upon brand/model on intro date an AVR with Dolby Ex will operate slightly different. Earlier AVRs with Ex usually with turn on Ex when a DD 5.1 stream is played if the back surround speaker has been turned on through the speaker menu. Early DVD software encoded with DD and Ex did NOT have the ID flag so the AVR could not tell the difference. But now some DVDs w/Ex are starting to include this ID flag, and the latest AVRs with automatically turn Ex ON/OFF. However note that sometimes turning Ex ON for a DD 5.1 DVD will make the surrounds sound worst by collapsing the surround stage, this due to how the phasing in the rear channels is done. Best thing is just try it for each DVD and see what sounds the best to you..
 

·
Registered
Joined
·
30,069 Posts
Quote:
Originally posted by barhoram
Do Dolby Digital - EX receivers automatically fill the 6 or 7th channel on non Dolby Digital - EX DVD's with the same surrond information that is present on the sound channels?
No. Whenever you use the DD EX mode (even on non-EX soundtracks) the rear speakers will get different surround information than the side speakers. The EX circuit will look for mono content in the surround channels and will send that content to the rear speakers; the remaining stereo information will remain at the side speakers. This way you get distinct surround information from your left, from your right and from behind you.


However, since those soundtracks weren't specifically EX encoded, the results will be variable. Some will sound great, others not so good. Try it and listen for yourself (it's not like you're going to damage anything).


Best,

Sanjay
 
1 - 4 of 4 Posts
Status
Not open for further replies.
Top