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Having a bit of a problem with the Arduino Nano RP2040. I'm trying to use the onboard microphone to read the frequency of a sound and then use that variable for calculations. However, while I can get the mic to respond to audio stimulus, I'm not sure what the values being recorded actually are. I want to be able to play for example a note at 80 Hz. I need to be able to identify a note.

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    Your last sentence does not make sense to me. Are you trying to play a note, or to identify a note? Apr 22, 2022 at 9:54
  • install Audacity on your computer record a sound and examine the recorded data ... audacityteam.org
    – jsotola
    Apr 22, 2022 at 14:42

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