Computation of the FFT with the FFT.java was remove.
sigproc.java:
Two functions were included: powerspec and acf. These two are used to compute the power density and the autocorrelation using the FastFourierTransformer (apache commons).
The function sig_fft.
BarkEnergy, MFCCs, FFT, and FourierTransform.java were deleted.
f0detector:
BarkEnergy, MFCCs, FFT, and FourierTransform.java were deleted.