90degree phase shifts
wrote:
I'm guessing you all probably know why I need to create one of the above - =
to trick a Pro Logic Surround decoder.
Why not use a pro logic encoder, then?
Problem is, I know what a 90 - and 180 - deg phase shift looks like on a pu=
re sinewave, but how to I achieve 90 degrees phase shift on "real world" ma=
terial - a clip of ducks quacking or a 1890s locomotive roaring by? There =
is no simple wave - ducks, trains, and of course music - are anything but s=
imple!
All-pass networks are discussed extensively in the Audio Cyclopedia.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."
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