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aic3104 mic1rp 单端输入录音太小声

大家好:

             我用的是aic3104的芯片,使用mic1rp单端输入,录音时声音太小声了。请问什么原因导致。设置如下:       

W 15 00  mic1Rp singnnel end

  W  13 04 left adc power up

  w 16 04 right adc power up

  w 19 80    micbas 2.5v

  w  0f  34  26db

 w   10 34 26db

原理图:

x 出现错误。请重试或与管理员联系。