Pure Tone Generator
Generate a pure tone that plays continuously and updates as you adjust it.
A live, adjustable tone
This generates a pure tone that plays continuously and responds instantly as you change the frequency, so you can hear the pitch shift in real time. It is useful for exploring how frequency relates to pitch, testing equipment, and finding a precise tone by ear.
Adjust the frequency to hear the tone change live.
Why a live tone is instructive
Being able to sweep a tone up and down while listening is genuinely instructive, because it makes the relationship between frequency and pitch immediate and tangible — you hear the pitch rise smoothly as the frequency climbs, and can feel where it becomes shrill and piercing at the top or deep and rumbling at the bottom. This real-time control is useful for finding a specific pitch by ear, matching a tone you are trying to identify, testing at exactly which frequencies your equipment or hearing responds, and simply understanding sound. As with any tone generator, the standard caution applies: start at a low volume and raise it gently, since a continuous tone, especially at high frequencies, can quickly become unpleasant and, if too loud, harmful to hearing. Used sensibly, a live adjustable tone is one of the most direct ways to explore the audible frequency range and understand how what you hear relates to the physics of vibration.
Frequently asked questions
What is a live tone good for?
Hearing pitch change in real time as you adjust the frequency, finding a specific pitch by ear, and testing exactly which frequencies your equipment or hearing responds to.
Any safety note?
Start quiet and raise the volume gently — a continuous tone, especially at high frequencies, can become unpleasant and, if too loud, harmful to hearing.
Is anything uploaded?
No. The tone is generated in your browser.