Some of these sites are proprietary... > http://altiverb.daw-mac.com/library.html > http://www.audioease.com/IR/index.html > http://www.digifreq.com/digifreq/discussdetail.asp?TopicID=4092 > http://www.cksde.com/p_6_250.htm > http://purgatorycreek.com/convolution.html > http://www.xs4all.nl/~fokkie/IR.htm#Downloads > http://www.memi.com/echochamber/responses/index.html > http://www.phonmeister.de/samp.htm > http://www.ressl.com.ar/realreverb/index_old.html > http://pcangelo.ramsete.com/Public/IMP-RESP/ > http://www.memi.com/echochamber/responses/index.html Be sure to look at http://www.noisevault.com/ which is an open, non proprietary source for the exchange of impulse responses. Cheers, Greg Wilder www.gregwilder.com