Free sound tool
Play a clean test tone, adjust the frequency with a smooth slider, and compare sine, square, triangle, and sawtooth waves in your browser.
Start low, keep the volume comfortable, and stop if the sound feels unpleasant. Some speakers and headphones cannot reproduce the lowest or highest frequencies even though the control reaches the full range.
If you have pure-tone tinnitus, this online frequency generator can help you compare tones and find a pitch that seems close to what you hear.
Knowing your tinnitus frequency may help you better target masking sounds and frequency discrimination training. When a frequency seems to match, check one octave higher (frequency x 2) and one octave lower (frequency x 1/2), since tones one octave apart can be easy to confuse.
Researchers have studied 40 Hz sound and light stimulation for Alzheimer's disease, including work on gamma-frequency brain activity. Early animal studies were promising, while human research is still limited and mixed.
You can read a plain-language summary of the research. This tone generator is not a medical device, and 40 Hz tones are not a proven treatment.
For better nights
A pure tone can help you explore pitch, but bedtime relief usually needs a fuller sound environment. Soundblanket helps you build and save a personalized tinnitus sound routine for sleep.
Tone generator FAQ
The control runs from 1 Hz to 20,000 Hz. Very low and very high frequencies may not be audible on every speaker or headphone.
No. This tool is for simple sound testing and pitch reference. Soundblanket is not a medical device and does not diagnose, treat, or cure tinnitus.
Human pitch perception is not linear. A logarithmic slider makes small low-frequency changes easier to control while still reaching 20,000 Hz.
