REW is free room acoustics analysis software for measuring and analyzing room and loudspeaker responses. The audio analysis features of REW help you optimize the acoustics of your listening room, studio or home theater and find the best locations for your speakers, subwoofers and listening position.
www.roomeqwizard.com
www.hometheatershack.com/forums/rew-forum
sourceforge.net/projects/equalizerapo
Multi-Sub Optimizer
Convolver – A Convolution Plugin
DRC is a program used to generate correction filters for acoustic compensation of HiFi and audio systems in general, including listening room compensation. DRC generates just the FIR correction filters, which can be used with a real time or offline convolver to provide real time or offline correction. DRC doesn’t provide convolution features, and provides only some simplified, although really accurate, measuring tools.
drc-fir.sourceforge.net
sourceforge.net/projects/drc-fir/files/
Documentation
Wikipedia
The Audio File 