On Fri, Jun 10, 2011 at 09:43:55AM +0100, Paul Hodges wrote: > --On 10 June 2011 10:26 +0200 Bo-Erik Sandholm > <bo-erik.sandh...@ericsson.com> wrote: > >> Case B : Use a steady state 50 Hz signal and slowly pan it to new >> locations. > > Of course, as this involves the level from each speaker changing, the > speaker feeds will still have the higher frequency components. Indeed, I > presume they would appear even if you physically moved the speaker.
Panning an LF signal around at F revolutions per second in a 3rd order AMB system would mean that the speaker signals have sidebands at +/-1F, +/-2F, and +/-3F Hz. But no more. Almost all of that would cancel at the listening position, where you'd have a constant amplitude pressure and gradient. Ciao, -- FA _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
