Geoffrey Barton <[email protected]> wrote: >> From: Martin Leese <[email protected]> >>> From memory, the theory behind Trifield >> assumes either Blumlein XY, or pan-potted >> multi-track mono. Perhaps Geoffrey can chip >> in, or somebody can look at the paper >> (reference below). ... > > It is not essential that the material is Blumlein or pan potted; that is > just the way MAG handled a virtual 'test signal' in the paper; other > recording techniques work ok too, but with varying results, much as they do > over two speakers:-).
Obviously different recording techniques will work with varying results, and all will work to some extent. The theory developed in the paper, however, is more restrictive. Specifically, MAG stressed the importance of the decoder being energy preserving. But there is little point in the Trifield decoder being energy preserving when the recording technique used is not. That would be closing the stable door after the horse has bolted. Blumlein M-S with a cardioid M, for example, is not energy preserving. While energy preservation is not essential, the paper seems to suggest it is desirable. 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
