Acoustic/room analyzer software

hi i was wondering dose anyone know of some good Acoustic analysis software for Mac Os x or even PC for that matter, i have until recently been using Spectrafoo for os 9, since i bought my new machine i can no longer use it. Is there any alternatives for room testing with impules testing as well as frequency analysis? many thanks spiro techy type :)

To expand further on this... How would would accuratly "analyze" their room. I am unsure which freq I am having problems with. Can I do it simply with a program and a microphone, or do I need the specific measurement microphone along with some type of eq?

Spiro, > i was wondering dose anyone know of some good Acoustic analysis software for Mac Os x or even PC for that matter < I can't tell you what's available for Macs, but ETF is very popular for PCs because it's very capable yet reasonably priced ($150). > Is there any alternatives for room testing with impules testing as well as frequency analysis? < The three main things to test for are 1) frequency response, which has to be resolved to 1/24th octave or better below 300 Hz, 2) reflections, and 3) reverb time at 1/3 octave frequencies and also modal decay to a much finer frequency resolution. ETF does all of this very well. --Ethan