program of RT60

[popo]

		Hi

I'm student and I was wondering if anyone knows the impulse reponse program.
I must study the impulse reponse to have the RT60. I have done my measure: a sweep sine in enter and I have record my reponse room. Now, I want your help to do the same treatment with Matlab.
I know that treatment is composed by a deconvolution between the two signals, and I was try it but not successfully.

Please Help me !!!

pauline

[JohnM]

At its most basic the deconvolution to the impulse response is achieved by

IR = inverseFFT(FFT(measurement)/FFT(sweep))

Where the FFT division is a point by point complex division of the FFT results. Getting from the impulse response to an RT60 figure would typically involve performing linear fits on schroeder integrals of the band-filtered impulse response. For Matlab files to do all that and more try the AcMus files: http://www.mathworks.com/matlabcentr...bjectType=file