Intonation X-ray
More than a tuner: play a scale and we'll tell you which notes are sharp or flat, why, and how to fix them on your instrument.
Play long notes (1 to 3 seconds each), for example a slow scale. Every note you sustain is added to the X-ray.
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Your X-ray
Your note map
Red: sharp. Blue: flat. Green: in tune (±5 cents). The number below is stability: how much the note moved.
Advice for you
Your progress
Stored on this device only.
What the X-ray shows
- A live graph of your pitch as you play.
- A note map: how many cents sharp or flat each note is on average.
- Stability: how much each note wobbles while you sustain it.
- Instrument-specific advice: if a note is sharp because it uses valves 1 and 3, or flat because it's the 5th harmonic, we tell you and suggest another fingering or position.
- History to track your progress week by week.
Why it happens: harmonics and valves
On brass instruments every note comes from a natural harmonic of the tube. Some harmonics are naturally flat (the 5th by about 14 cents, the 7th by about 31) and valve combinations like 1-3 or 1-2-3 are sharp because the added tubing is too short. That's why players use 1st and 3rd valve slides, the trombone slide or the hand in the horn bell. The X-ray combines your measurements with that physics to give concrete advice.
Frequently asked questions
What is the intonation X-ray?
A test where you play long notes or a scale. The tool measures every note and shows which ones are sharp or flat, how steady your sound is, and gives you a score with advice.
How is the score calculated?
Each note counts according to how close it was to correct pitch and how steady it stayed. 90+ is very good; below 60, practise long tones with a tuner.
Is my history stored online?
No. It stays in your browser on this device only.
Can I use the drone during the test?
Yes, but with headphones: if the drone comes out of the speaker, the microphone hears it and the measurement gets confused.