Polyphonic Guitar Note Detector
Polyphonic Topping Detector
Strum all 6 strings at once and the mic picks out each note using FFT analysis. Tap any string card to open its tuning meter.
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How it works: Your microphone captures the audio, and a Fast Fourier Transform (FFT) breaks the combined waveform into its frequency components. The algorithm then:
- Locates spectral peaks — each one corresponds to a vibrating string
- Uses quadratic interpolation to pinpoint the exact frequency
- Filters out overtones/harmonics so you see fundamental notes only
- Converts each frequency to the nearest musical note, including cents deviation