Tone Generator | Online Frequency Generator | 100Hz Research Mode
Generate frequencies from 20Hz to 20kHz online. Includes 100Hz Research Mode, audio test tones, speaker testing, timer and stereo output.
- #audio
- #test
Generate audio test tones directly in your browser. Supports 20Hz–20kHz frequency generation, timer, stereo output and 100Hz Research Mode.
Frequency
Wave Type
Duration
Stereo
100Hz Research Mode
Plays a 100Hz low-frequency test tone for 60 seconds.
Research Information
Researchers at Waseda University reported that certain low-frequency audio stimulation may help reduce motion-sickness symptoms. This tool is an audio test utility referencing that research area. It does not guarantee medical effects and is not provided for treatment purposes.
Learn More →Safety Notice
This tool is not a medical device and is not intended to diagnose, treat, or prevent any disease. Start at a low volume to protect your hearing and stop immediately if you feel discomfort.
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Frequently asked questions
What is a Tone Generator?
A tone generator produces a steady audio signal at a chosen frequency. It is used for speaker testing, audio calibration, and low-frequency audio experiments in the browser.
What is 100Hz used for?
100Hz is a low-frequency reference tone used in audio testing and some research contexts. This tool provides it as a test signal only, not as a medical or therapeutic device.
What is 100Hz Research Mode?
Research Mode plays a 100Hz sine tone for 60 seconds with a progress timer. It is a convenience preset for low-frequency audio reference and study reference — not a treatment.
What is the Waseda University research?
Some studies, including work reported by Waseda University researchers, have explored whether certain low-frequency audio stimulation may relate to motion-sickness symptom relief. This tool references that research area for information only.
Is this a medical device?
No. This is a browser-based audio test utility. It does not diagnose, treat, or prevent any disease and does not guarantee any effect.
Can I use it on mobile?
Yes. Tap Play or Start 60s Session to enable audio on phones and tablets. All processing runs locally in your browser.
Do I need to upload files?
No. All audio is generated with the Web Audio API in your browser. Nothing is uploaded or stored on a server.