sample.py 文件源码

def amplify_max(self):
        """Amplify the sample to maximum volume without clipping or overflow happening."""
        assert not self.__locked
        max_amp = audioop.max(self.__frames, self.samplewidth)
        max_target = 2 ** (8 * self.samplewidth - 1) - 2
        if max_amp > 0:
            factor = max_target/max_amp
            self.__frames = audioop.mul(self.__frames, self.samplewidth, factor)
        return self