What I did was send a 4096 sample sinewave sweep from 0 to the nyquist, play it looped through the system under test, then record the result, then trimmed where I thought a 4096 sample cycle began and did an 8192 point FFT on the recording, multiplied the magnitudes with the magnitudes of the spectrum of a reversed 4096 sample sweep and added the phases, then did an inverse FFT to get the impulse response...if the result starts late I run a later part of the recording into the FFT/IFFT...
monkeys at work :D
Tancika85 9 months ago
What I did was send a 4096 sample sinewave sweep from 0 to the nyquist, play it looped through the system under test, then record the result, then trimmed where I thought a 4096 sample cycle began and did an 8192 point FFT on the recording, multiplied the magnitudes with the magnitudes of the spectrum of a reversed 4096 sample sweep and added the phases, then did an inverse FFT to get the impulse response...if the result starts late I run a later part of the recording into the FFT/IFFT...
Amishman35 1 year ago
thanks helpfull stuff ,very comprehensive
electronige 2 years ago