Apply sliding-window cepstral mean (and optionally variance) normalization :param feat: Cepstrum. :param center: If true, use a window cente

Convert data to JSON-friendly dict.

Compute mel-frequency cepstral coefficients :param waveform: Input waveform. :param blackman_coeff: Constant coefficient for generalized Bla

Apply voice activity detection :param log_energy: Log mel energy. :param energy_mean_scale: If this is set to s, to get the actual threshold