18 Nov
2011
18 Nov
'11
4:37 p.m.
On Thursday 17 November 2011 17:28, Julien Claassen wrote:
My CD is one of the "fake surround" ones.
Phase shifting sounds
likely. But what to do about it. Is there any way, I can split it up in
any other format, that would allow me to get something more sensible
out of it?
My memory was that the surround channel was added to one channel normally
and to the other channel inverted, but the Wikipedia article on Dolby
surround says it's phase-shifted 90 degrees in one and -90 in the other
(and, apparently, multiplied by sqrt(2)/2). That's why I didn't mention
specifics in my first post.
But if you wrote a Csound orchestra to decode DTS noise into stereo, you
certainly should be able to do it for plain old Dolby surround! Start
messing with phase and adding channels together, and you ought to get
something useful out of it.
Rob