audio.py 文件源码

def _next_chunk(self):
        chunk = await self._src_block.__anext__()
        new_aud, self._state = audioop.ratecv(chunk.audio, 2, self._n_channels,
                                              chunk.freq, self._out_rate,
                                              self._state)
        return AudioChunk(chunk.start_time, new_aud, 2, self._out_rate)