something about microphone connect

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fendou1997
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Last seen: 2 days 7 hours ago
Joined: 11/16/2017 - 5:32am
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!

fendou1997
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Last seen: 2 days 7 hours ago
Joined: 11/16/2017 - 5:32am

I am using i2s in the UNO interface on STM32.