FREE TOOL · ON YOUR DEVICE
Tone generator online for free
Generate a test tone to check speakers and headphones, find buzzing or tune by ear. It also has white, pink and brown noise, a frequency sweep and a left and right speaker test. Start with a low volume: a continuous tone at high volume can damage your hearing.
- Free with an account
- From 20 Hz to 20 kHz
- WAV download
- Choose the sound
- Press “Play”
- Download it if you need it
HOW TO USE IT
Three steps.
Choose the sound
Tone, noise or sweep. For a tone, type the frequency or use the shortcuts and the octave buttons.
Press “Play”
Start low. Raise the volume little by little and choose whether it plays on both speakers, one, or alternating.
Download it if you need it
Choose the duration and press “Download WAV” to save the same sound.
NEXT STEP
Keep going with these tools
Tone generator: common questions
How high can I hear?
It depends on your ears and age: with the years it is normal to stop hearing above about 15,000 Hz. Do not raise the volume to look for a tone you cannot hear.
What is pink noise for?
It has the same energy in each octave, so it sounds balanced and is used to test speakers. White noise sounds brighter and brown noise deeper.
What is the sweep?
A tone that rises from one frequency to another, spending the same time on each octave. It helps find resonances, rattles or a speaker’s limit.
Is my audio uploaded to a server?
No. The tool runs inside your browser: audio files are read and processed on your device and are not sent to Cocuyo or to any third party. The MP3 encoder is served from our own site. You can check it in your browser’s network tools: your file is not sent.
Is it really free?
Yes. You can try it before signing up; to keep using it, we ask for a free account, with no subscription. It uses no credits and does not count toward your 30 welcome uses: it has no usage cap.
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WHEN YOU WANT TO CREATE
Create voices and narration with AI.
Cocuyo’s Studio brings 30+ AI models for image, video and voice together. You see the credit cost before generating, and credits never expire.