I have done some measurements on my listening room and would welcome some
comments an advice.

The low frequency response of the room as driven by my 'speakers is :-

http://audiopages.googlepages.com/Sp...enmic-full.jpg

If anyone would like to replicate the FFT, the original WAV file is:-

http://audiopages.googlepages.com/whitenoiseopenmic.wav

Microphone was the one fitted to the Radio Shack Sound Level Meter, used
with the output taken to my sound card and recorded in Cool Edit. SPL was
70dBC.

From what I've seen, the room response looks pretty reasonable, so I'm happy
there. Go on, disillusion me.......

I have downloaded a demo version of ETF5 from Acoustisoft
http://www.etfacoustic.com/ This software has measurement tools for
reverberation time, and I've only just started using it, so don't pretend to
understand it properly. Anyway, I've measured an RT60 of something like 2
seconds in the room, although it seems to be very flat with frequency,
rather than the normally sloping response. With the demo version I can't
save a file, so can't post one, and I'm reluctant to buy the software unless
I actually find it works. I'll make some more measurements and see if I can
understand what's happening.

My question is:- does anybody here have experience of ETF5 software, and can
they show me what a typical RT60 plot (say, of their listening room) should
look like.

Thanks

S.