As i said, saying's one thing, actually doing is another. There's a great deal more to decoding SQ & QS, my proces's are highly advanced and gives results approaching that of the original four channel master, which just just doing simple maths will not do (max 3db)
You have fallen into the same trap that everybody falls into, that of misunderstanding these old matrix systems and the complexity that lies within what appears to be a simple equation. I was most fortunate to have a 'pen-pal' relationship with Ben while i was at college in the early 1970's and as been said here a few posts ago, yes he did bang on about SQ, but nobody actually bothered to really listen, and lost the chance to learn how interesting/complex SQ really was. Perhaps you should listen to a 'Pheonix' so you can hear just how good SQ actualy was. The issue with the system (as well as QS) was that technology wasn't up to the job at the time, which gace them the bad names they aquired. But, we're in the 21st century now................... Richard wrote: > The basis for their work appears to be the many inacurate sites > filling the web with 'oh-so' wrong, ill informed inacurate > information. Well, this subject isn't much of my interests, but at least Stephan Hotto's decoder claims to use exactly the equations you are citing: Implemented Decoding Matrixes: SQ (CBS): LF = L RF = R LB = 0.707 * jL - 0.707 * R RB = 0.707 * L - 0.707 * jR http://www.hotto.de/software/quadrophonicmatrixdecoder.html Apart from that, I don't think see anything very "complicated" about that. (And I am very baaaaad with mathematics.) Multipliers mean different gains, the needed phase shifts are simply +/- 90 and +/- 180 degrees. There's plenty of phase-shifter plugins available that do the job. Been there, done that in AudioMulch. Worked fine for me. Now, if you'd like to go the gain riding (logic, as they were called) path of the analog decoders, that's where I raise my hands. Eero _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on. --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20151021/efab3bf5/attachment.html> _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
