Instrument Tuner

Chromatic, real-time pitch detection using Web Audio FFT. Works offline.

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0.0 Hz

-50¢-25¢0+25¢+50¢

Press Start and play a note

Tuning presets (target notes)

All 12 semitones accepted (chromatic mode)

Uses navigator.mediaDevices.getUserMedia + AnalyserNode FFT to detect the dominant frequency. Best results in a quiet room with the instrument 30–60 cm from the mic.