On Sat, Feb 21, 2009 at 10:31:49AM +0100, forum::für::umläute wrote: It's not on the downloads page because using it makes sense only if you have the calibration for you microphone - TetraProc requies around 40 paramters. This calibration data can be derived only from IR measurements. It is possible to use 'standard' values, given the FR and polar pattern of the mic, but results will not be very good. Which microphone would you want to use ? Would it be possible to measure it, if I tell you how to do it ? Ciao, -- FA Laboratorio di Acustica ed Elettroacustica Parma, Italia O tu, che porte, correndo si ? E guerra e morte !