Frequency Analyzer
Play a gong, a bowl, a voice or a string near your microphone and see the tones in its sound.
Listen
Shows the strongest tones in the sound.
Press Start listening, then play or strike the instrument.
Two tones closer than about 6 Hz show as one. A gong changes in the seconds after a strike, so the list changes too.
Before you start
- Allow the microphone when your browser asks.
- Play one instrument at a time, in a quiet room. A fan or traffic shows up as a tone too.
- If the sound level stays very quiet, move closer to the microphone.
Leave this as it is unless you have more than one microphone.
Two words used here
- Hz (hertz).
- Vibrations each second. A higher number is a higher tone.
- Cent.
- One hundredth of the step between two neighboring piano keys.
Tuning a guitar or ukulele? Use the tuner.
Saved readings
Nothing saved yet. Press Save reading while a reading is on screen. Readings stay in this browser.
More about the sound
Pictures and numbers for the same sound. Open what you want to look at.
The sound spread out from low tones to high. The listed tones are marked.
The shape of the sound wave over a fraction of a second.
The last ten seconds of the Single note reading.
Whole-number multiples of one tone, and the notes they fall near.
The nearest note in three ways of tuning.
A color worked out from the tone by doubling its frequency.
A drawing that changes with pitch.
Period, wavelength, a matching atlas entry, and a tone to play back.
Save readings step by step, for example to compare two instruments.
What the page does with the sound, and what your microphone reports.