code: def _read_audio_data(self, file_path):
          
          try:
              self.log(u"Reading audio data...")
              # if we know the TTS outputs to PCM16 mono WAVE
              # with the correct sample rate,
              # we can read samples directly from it,
              # without an intermediate conversion through ffmpeg
              audio_file = AudioFile(
                  file_path=file_path,
                  file_format=self.OUTPUT_AUDIO_FORMAT,
                  rconf=self.rconf,
                  logger=self.logger
              )
              audio_file.read_samples_from_file()
              self.log([u"Duration of '%s': %f", file_path, audio_file.audio_length])
              self.log(u"Reading audio data... done")
              return (True, (
                  audio_file.audio_length,
                  audio_file.audio_sample_rate,
                  audio_file.audio_format,
                  audio_file.audio_samples
              ))
          except (AudioFileUnsupportedFormatError, OSError) as exc:
              self.log_exc(u"An unexpected error occurred while reading audio data", exc, True, None)
              return (False, None)
docs: Read audio data from file.
  
          :rtype: tuple (True, (duration, sample_rate, codec, data)) or (False, None) on exception