def mel_inverse(frame_size, sr=16000.0, nfilts=40.0): return np.linalg.pinv(mlab.fft2melmx(frame_size, int(sr), int(nfilts))) # Pseuodo inverse
def mel_transform(nfft, sr=16000): return mlab.fft2melmx(nfft, sr)
def mel_filters(frame_size, sr=16000.0, nfilts=40.0): return mlab.fft2melmx(frame_size, int(sr), int(nfilts))