Easiest and cheapest method of analysing room resonance?

[irrelevance]

I read somewhere on the boards before that this can be done from within scope with a decent spectrum analyzer like wolf's but I'm not to sure how to go about setting up a test. From the research I've done it seems that I should be sweeping across a range of frequencies using white noise and any peaks would indicate room resonance. Is my understanding correct? IOf I have a mike setup in my normal listening position and run such a test then it would hopefully go some way to correcting any anomolies that my boxy room throws up. There is at present some high end resonance I am aware of and idealy I guess I should really think about some kind of room treatment but I wanted to check this route out first. Any help greatly appreciated.

[kwild]

The best and cheap way is RoomEQ and a Behringher ECM 8000 measurement microphone.

Download from here :

http://www.hometheatershack.com/roomeq/

[the19thbear]

why do you need a special mic? isnt a normal mic with flat freq response enough?... just had to ask

[garyb]

there's no such thing as a mic with flat response.
the mic needs to be a known, calibrated quantity....

[kwild]

there's no such thing as a mic with flat response.
the mic needs to be a known, calibrated quantity....

In fact or you get the mic "coloration" on the room response!

Also check that site :

http://www.realtraps.com/

Very usefull tutorials and infoz.

[irrelevance]

Thanks for the links and advice. In light of what has been said it is probably a lot cheaper and far better solution for me to look into some room treatment rather than spend money on equipment to just figure out if I can patch up the sound.

[astroman]

yes, in particular if you suspect high frequency problems.
What may work on room modes in the bass domain, will probably require you'll fix your head within a < 1 inch position at higher frequencies.
We all know that pic from Kubricks 'A Clockwork Orange'

cheers, Tom

[garyb]

yeah, it really can't be done with eqs. the room MUST be dealt with, for best results.