On 24 Aug 2011, at 17:00, [email protected] wrote: > > Message: 1 > Date: Wed, 24 Aug 2011 05:28:38 -0000 > From: Richard Lee <[email protected]> > Subject: Re: [Sursound] Questions regarding a very early 'Ambisonic' > LP > To: 'Surround Sound discussion group' <[email protected]> > Message-ID: <01CC621F.0240EF60@edgexp> > >> Peter also mentions the Meridian software decoder, which is not > available. However there are plenty of software decoders available for > download. > > Duu.uuh! Mr. Elen, could you please provide some links to these. I've > already checked the Unobtainium Software website for software UHJ decoders. > > BTW, though I suggest a way to distinguish between RM & UHJ/45J, I agree > with the gurus who suggest it is probably 45J. > > A UHJ decoder will decode Matrix H nicely.
I disagree, unless you mean press the stereo button (or the mute button). Matrix H was designed to be decodable via a modified QS decoder. Nothing decodes matrix H well and, as such, nothing is the best thing to use. > If you can tweak it to 45J, > even better. > > The "phase amplitude pan locus" for Matrix H is discontinuous but not as > badly as the seriously wonky SQ. 45J was designed to be inside the Matrix > H spec and would probably give "better" results than "dedicated" Matrix H > decoddrs. 45J was designed entirely without reference to matrix H!!!!! say three hail MAGs for the blasphemy. > IIRC, apart from the ve...ry early experiments, the BBC used 45J not so. They only changed from matrix H into the 'compromise' HJ. An HJ decoder was designed to be made entirely from political, rather than electronic, components and, as such, was entirely non-causal and was as accurate as you imagined it might be. > and UHJ decoders for all their work. HJ was compatible with UHJ at maybe four locations. One of them was not RAH. However, the only HJ encoders around for b-format encoding got UHJ compatibleised by a backend re-design by me. > > GV Malham, is Howard Smith still around? sadly, no. Geoffrey > I don't think he made the move to > AMS. > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20110824/9ab28f3c/attachment.html> _______________________________________________ Sursound mailing list [email protected] https://mail.music.vt.edu/mailman/listinfo/sursound
