Hello,
I'm an italian junior researcher. I'm looking for the real algorithm procedure of the (real)cepstrum to relize in labview.
It isn't in the Sound&Vibration Toolkit, and I have found different notations about cepstrum.
The opeartion's sequence would be:
fft(ln(fft(signal))))
My doubts are:
1. The internal fft is a power spectrum, a rms, peak, or peak-yo-peak spectrum?
2. The internal fft scale must be linear or in decibel?
3. The external fft is correct or must be an inverse fft? I found different notations in contraddiction.
4. In the case of external fft, the X scale is time, but it must be converted in frequency to recognize the fundamental frequency (which is the purpose to use the cepstrum). How I can obtain this convertion?
Do You know if there exist a Labview Vi that realize the cepstrum, where i can find it? I'm searching in the correct forum?
Thank you
