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Tuning Fork FFT
Microphone + FFT · ~7 min
“Every metal object — bell, pan, fork, glass — has a unique acoustic fingerprint. What is yours?”
Adult or teacher supervision required
Strike objects with a soft mallet or the back of a spoon, not bare knuckles, and watch for sharp or rusted edges on window grilles or old metal objects.
You may be asked to grant motion permission.