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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1Your last sentence does not make sense to me. Are you trying to _play_ a note, or to _identify_ a note? – Edgar Bonet Apr 22 '22 at 09:54
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install Audacity on your computer record a sound and examine the recorded data ... https://www.audacityteam.org/ – jsotola Apr 22 '22 at 14:42