On Sat, Nov 27, 2010 at 09:24:30AM -0000, Richard Lee wrote: > >As to the polarity issue, L,R are indeed inverted w.r.t. X,Y,Z > >for front, left, up respectively. It could be the Lemo to XLR > >breakout cable - did you check the wiring ? > > The Mk4 had WXYZ inverted wrt stereo outputs. I think the stereo outputs are > "correct". (pressure increase -> Omni increase) > > This was due to an obsession of mine to avoid yet another OPA in the signal > path.[*] Mea maxima culpa.
This more or less confirms my suspicion that the outputs are only impedance balanced. If they were fully balanced (i.e. two antiphase signals), you could just swap the connections. > [*] Later, this became an obsession in keeping intermediate products in the > accumulator on integer DSP chips. Sounds familiar :-). Ever done DSP on TI's C30, C40, or the ARM ? All registers equivalent, the problem goes away. But then of course there's the C calling convention, e.g. on the ARM i would try to do everything using just r0, r1, r2, r3, r12 since these don't have to be saved and restored, and get the final result in r0 since that is the return value. Those were the days... Ciao, -- FA There are three of them, and Alleline. _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
