Warped FFT
Posted: Wed Sep 09, 2020 11:39 am
Paper: https://pdfs.semanticscholar.org/bc4b/2 ... e58600.pdf
Hmm... how can it be done in this code:
which maybe is the culprit for some weird phenomenon in filter response (depending on filter type, affects in both ends of frequency spectrum) ... .
I would gladly like to try if WFFT could help in this issue. Can it be done ... ?
Hmm... how can it be done in this code:
- Code: Select all
% obtaining impulse response using cepstral processing
h = log(R); % R^(k) (R=magnitude squared response)
h = ifft(h); % complex spectrum r^(n)
h = fft(h); % R^mn(k)
h = exp(h); % Rmn
h = ifft(h); % h(n)
h = real(h); % IR
which maybe is the culprit for some weird phenomenon in filter response (depending on filter type, affects in both ends of frequency spectrum) ... .
I would gladly like to try if WFFT could help in this issue. Can it be done ... ?