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something about microphone connect

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Tue, 04/02/2019
7:09pm
fendou1997
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#1
something about microphone connect

Hello! I am using STM32F746N, I use the I2S to connect the microphone, but I don't know why there is high frequency noise, even if I don't pick up the microphone, help me thankyou!

Tue, 04/02/2019
7:18pm
fendou1997
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I am using i2s in the UNO interface on STM32.