code: def _compute_mfcc_c_extension(self):
          
          self.log(u"Computing MFCCs using C extension...")
          try:
              self.log(u"Importing cmfcc...")
              import aeneas.cmfcc.cmfcc
              self.log(u"Importing cmfcc... done")
              self.__mfcc = (aeneas.cmfcc.cmfcc.compute_from_data(
                  self.audio_file.audio_samples,
                  self.audio_file.audio_sample_rate,
                  self.rconf[RuntimeConfiguration.MFCC_FILTERS],
                  self.rconf[RuntimeConfiguration.MFCC_SIZE],
                  self.rconf[RuntimeConfiguration.MFCC_FFT_ORDER],
                  self.rconf[RuntimeConfiguration.MFCC_LOWER_FREQUENCY],
                  self.rconf[RuntimeConfiguration.MFCC_UPPER_FREQUENCY],
                  self.rconf[RuntimeConfiguration.MFCC_EMPHASIS_FACTOR],
                  self.rconf[RuntimeConfiguration.MFCC_WINDOW_LENGTH],
                  self.rconf[RuntimeConfiguration.MFCC_WINDOW_SHIFT]
              )[0]).transpose()
              self.log(u"Computing MFCCs using C extension... done")
              return (True, None)
          except Exception as exc:
              self.log_exc(u"An unexpected error occurred while running cmfcc", exc, False, None)
          return (False, None)
docs: Compute MFCCs using the Python C extension cmfcc.