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我们MCU的I2S只支持Left-Justified 、Right-Justified 。我用的是Left-Justified去适配I2S 。
问题：
PCM1803采样音频，在还原数据时发现采样的音频被放大了3倍。
这是我们输入140mv时，抓的数据，发现峰值计算了下450mv
