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aic3104 adc 录像白躁音很大

dear ti :

 aic3104  adc 录像白躁音很大 用adc 高通滤波有效吗  用示波器量过时钟 mclk 12.288 mhz   ;  wclk 48000 khz ;   bclk  1.536mhz  

adc 增益调小 采集 的声音也会变小   请问 aic3104 有什么功能抑制这个噪音

x 出现错误。请重试或与管理员联系。