[Rafal]

Hi Everyone,

Can you point me to an inexpensive way to measure an in room freq. response (SPL vs freq. graph)?
I think I would need some software and a microphone (hopefully one that can be plugged in to my laptop and is not too expensive)

What do you think?

Rafal

[woodsyi]

You need a microphone, microphone preamp and software.  I use Behringer, M-audio and TrueRTA in that order. I think the total was around $250 with level 4 subscription on the software.  Level one is free.

[mfsoa]

I'm about to start playing with RadioShack SPL meter, Creative USB sound card into notebook PC and RPlusD (the replacement for the better-known program "ETF"). A calibrated mic would presumably do a more accurate job, but I'm more interested in relative changes brought about by room treatments/speaker placement.

Sorry can't be of help in comparing any of the software out there.

SPL meter was oh, $50-60 ?, USB soundcard ~ $50 and software $150.

[Mike Dzurko]

For a great RTA:

http://www.trueaudio.com/

or for a different approach:

http://www.etfacoustic.com/