Features computation

[sleglaive]

Hi,

From 'mfccspec.m', it seems that you compute the Fourier transform (with Matlab's fft function) of 25ms-long windows, and keep the entire spectrum (which is Hermitian symmetric) to compute the features that are then fed to the network.

Usually, we only keep the Fourier coefficients corresponding to the "positive frequencies", as other coefficients are redundant due to Hermitian symmetry.

Can you confirm that it is indeed the procedure you follow?

Thanks a lot by advance for your answer.

Best,

Simon