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自行制作的音频不管是多少Hz，发送到开发板那边最终播放出来的都是900kHz左右的噪音，这个要怎么处理
音频文件的格式是WAV 嘛？
https://gitee.com/YgqMars/freqchip/tree/master去这里面拿demo参考一下