On 22/08/2011 16:02, Dave Malham wrote: I would think that the only people
around who are really likely to know for certain are Geoffrey Barton, Peter Carbines or Peter Craven - pretty well everyone else has gone...
I've just checked the remaining UHJ vinyls I have, although I don't recall this LP at all. Certainly, it was never mentioned in my dealings with the NRDC and I had several meetings at their Victoria Street offices in London from around 1975 onwards.
If it is in one of the 'early' 2-channel encodes, why not try a 'G-format' transcode to a horizontal layout? I've found this works perfectly well for a simple 4 square(-ish) set up, using my archive recordings of Matrix H, and HJ, bearing in mind no-one is likely to know the original layout of performers at the recording venue.
The only thing I ever noticed when decoding H/HJ using the Meridian application which allows for B-format and UHJ input, is an apparent rotation of between 15-30 degrees leftward. Not knowing the original layout as recorded, I judged the shift by reference to images which I /assumed/ should have been centre front. It was easy enough to skew my listening seat towards the left until the surround effect sounded 'correct'.
Of course, if the LP is a UHJ encode, a G-format transcode should give excellent results. I've found that digital transcodes give better results than playing the original 2-channel UHJ source through a 1982 basic UHJ decoder (a pre-production prototype for the Aiwa/Boots ambisonic micro-system).
-- Peter Carbines _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
