Pure Intonation A just intonation drone that plays whole chords
Most drones give you one note. Pure Intonation Tuner plays the whole chord, tuned pure: pick the notes and it finds the root, names the chord and tunes every other note to its just ratio above that root.
Open Pure Intonation Tuner – free
How it works
- Tap notes on the keyboard or the tone wheel. The drone starts on its own.
- The root lights up purple. Each other note is retuned to its pure interval: the major third 14 cents low, the fifth 2 cents high, the harmonic seventh 31 cents low.
- Flip EQUAL / PURE to hear how the chord changes from beating to ringing.
- Double-tap any key to move the whole chord so its root lands on that note.
Sounds and rooms
Choose from 17 sounds, including synth pads, organ, strings, brass and choir, and place them in real recorded spaces, from a studio to a large concert hall to a cathedral. Sustained pure chords in a live room are the fastest way to train your ear to hear a chord lock.
Practice ideas
- Hold a major triad and play its third against the drone until the beats disappear.
- Build a dominant seventh with the 7/4 harmonic seventh and hear how smooth it becomes.
- Sing or play each chord tone in turn and watch the strobe tuner confirm the pure pitch.
Questions
What is a just intonation drone?
A drone that sustains pitches tuned to simple whole-number ratios, such as 3:2 for the fifth and 5:4 for the major third, so the chord rings without beats.
Can the drone play more than one note?
Yes. It plays any chord you choose and tunes every note relative to the detected root.
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