On Thu, Apr 20, 2006 at 10:01:32AM -0500, Ben Loftis wrote: So what did you see? I was there, but I had left by the time you sent this (I was on a set up crew). The only audio gear I really got arround to looking at was some of the gear from Linear Accoustic (but they are broadcast audio, not so much studio audio). One this I've been wondering is how do the 5.1 upmix boxes work? The ones that take in stereo and convert it to surround sound. The sales weenies I talked to sounded like they were making it up. One idea I had was to sum 2 FIRs (one for each source). generated from placing 2 speakers and a surround sound mic setup in a hall. Any free software working on doing this sort of thing. -- Joshua D. Boyd jdboyd(a)jdboyd.net http://www.jdboyd.net/ http://www.joshuaboyd.org/