I want to measure and compare the phase response of two identical microphones. To do this, I have a pressure chamber, which allows to apply the same pressure to both microphones.
I apply a sweeped sine wave to the chamber to measure the freq. range of interest. As Data I have the applied pressure and the measured pressure of the two microphones.
Right know I do the following:
fftChamber = fft(chamber_sig) fftMic1 = fft(mic1_sig) fftMic2 = fft(mic2_sig) G1 = fftMic1./fftChamber G2 = fftMic2./fftChamber phaseResponse1 = angle(G1) phaseResponse2 = angle(G2)
This method gives me the most reasonable result, but I'm not sure why dividing should be right or appropriate, as this is not really a transfer-function?