Organ Tuner

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press a key

Volume

This mode listens through the microphone. Your browser will ask for permission.

Beat counting plays a reference tone and listens to it beating against the pipe in the room. Turn the volume up and hold the phone near the pipe mouth.

Settings

Reference pitch

Hz

Frequency of A4. Everything else follows from it.

Temperament

Rank

Voice

Temperature

Compensate for temperature

Tuning now at

°C

In tune at

°C

About

Pitch is measured by autocorrelation followed by phase refinement, which resolves well under a tenth of a cent on a steady pipe. Nothing is sent anywhere; all processing happens in this browser.