sample.py 文件源码

def mix(self, other, other_seconds=None, pad_shortest=True):
        """
        Mix another sample into the current sample.
        You can limit the length taken from the other sample.
        When pad_shortest is False, no sample length adjustment is done.
        """
        assert not self.__locked
        assert self.samplewidth == other.samplewidth
        assert self.samplerate == other.samplerate
        assert self.nchannels == other.nchannels
        frames1 = self.__frames
        if other_seconds:
            frames2 = other.__frames[:other.frame_idx(other_seconds)]
        else:
            frames2 = other.__frames
        if pad_shortest:
            if len(frames1) < len(frames2):
                frames1 += b"\0"*(len(frames2)-len(frames1))
            elif len(frames2) < len(frames1):
                frames2 += b"\0"*(len(frames1)-len(frames2))
        self.__frames = audioop.add(frames1, frames2, self.samplewidth)
        return self