def get_raw_data(self, convert_rate = None, convert_width = None):
        assert convert_rate is None or convert_rate > 0, "Sample rate to convert to must be a positive integer"
        assert convert_width is None or (convert_width % 1 == 0 and 1 <= convert_width <= 4), "Sample width to convert to must be between 1 and 4 inclusive"

        raw_data = self.frame_data

        # make sure unsigned 8-bit audio (which uses unsigned samples) is handled like higher sample width audio (which uses signed samples)
        if self.sample_width == 1:
            raw_data = audioop.bias(raw_data, 1, -128) # subtract 128 from every sample to make them act like signed samples

        # resample audio at the desired rate if specified
        if convert_rate is not None and self.sample_rate != convert_rate:
            raw_data, _ = audioop.ratecv(raw_data, self.sample_width, 1, self.sample_rate, convert_rate, None)
            pass

        # convert samples to desired byte format if specified
        if convert_width is not None and self.sample_width != convert_width:
            raw_data = audioop.lin2lin(raw_data, self.sample_width, convert_width)

        # if the output is 8-bit audio with unsigned samples, convert the samples we've been treating as signed to unsigned again
        if convert_width == 1:
            raw_data = audioop.bias(raw_data, 1, 128) # add 128 to every sample to make them act like unsigned samples again

        return raw_data
Returns a byte string representing the raw frame data for the audio represented by the ``AudioData`` instance.
dataset/ETHPy150Open Uberi/speech_recognition/speech_recognition/__init__.py/AudioData.get_raw_data