The Temper Tool

Ear training for piano tuners

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What it does

Audible beat rates on the coincident partials used in tuning pianos
Immediate, accurate detail on frequencies and beat rates
Simulated inharmonicity
Works with an optional MIDI keyboard^*

^*A browser that supports WebMIDI (a recent version of Edge or Chrome) is required to use a MIDI keyboard.

A note before you start

This is just ear training — to help you learn the beat rates of intervals and their relationships. You still have to understand what to listen for, and then transfer it to a real piano with its sticky pins, wild strings, and everything else that comes with getting a note to actually stay put. That part is between you and an experienced technician. But I hope this little tool helps with your ear training. Happy tuning.