Dear all thank you for your time to read my topic i'm working on project to record audio I managed to record audio at a sample rate of 16 kHz and a super good 48kHz with STM32F103C8. But the problem is that I have background noise in the recorded sound. and I used different methods I used a digit…

[image] macanrezaiiii: There is also noise when the microphone is not connected Of course! The ADC does have internal noise, and so do resistors. ANY exposed wiring, like the voltage divider, will pick up electrical noise from the environment. You need grounded shielding on everything to re…

Background noise in Adc input

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macanrezaiiii August 23, 2021, 2:35pm 4

This is my voice and you can see the noise
myvoice-8khz.zip (11.2 KB)

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Background noise in Adc input

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