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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _frame_generator(self, frame_duration_ms, audio, sample_rate):
 """Generates audio frames from PCM audio data. Takes the desired frame duration in milliseconds, the PCM data, and the sample rate. Yields Frames of the requested duration. """

        n = int(sample_rate * (frame_duration_ms / 1000.0) * 2)
        offset = 0
        timestamp = 0.0
        duration = (float(n) / sample_rate) / 2.0
        while offset + n < len(audio):
            yield self.Frame(audio[offset:offset + n], timestamp, duration)
            timestamp += duration
            offset += n