"Richard" <[email protected]> wrote: > Many thank for that Martin, and although I find the math's a little daunting > still, it unfortunately brings even more questions LOL > > One is, is it possible to easily implement it using the software a lot of us > are using?
Sorry, can't help. I have only ever used 1980s hardware decoders. > I've read the circuit diagram of the AD-7 UHJ/B decoder, and the > super-stereo function appears to be quite basic, but I believe, very > functional, in that > > 1, The Super-Stereo control equally varies the level of signal to the X & Y > phase filters as well as > > 2, The pre-set mixing of the W, X & Y signals to match the math formulae as > described. The way it works is that the Left, Right input channels are converted to Sum, Difference. The stereo width control then varies the gain of the Difference channel, then Sum, Difference are converted to W', X', Y' as per the 1982 equations in Geoffrey's post. (Obviously it is convenient to combine some of these steps.) From this point on, the design is the same as for a B-Format decoder. Regards, Martin -- Martin J Leese E-mail: martin.leese stanfordalumni.org Web: http://members.tripod.com/martin_leese/ _______________________________________________ Sursound mailing list [email protected] https://mail.music.vt.edu/mailman/listinfo/sursound
