Simply generate a tone with a frequency between 1Hz and 22000Hz on your smartphone or tablet.


Simple and Accurate
Use the cursor or the keyboard of your smartphone to adjust the frequency then click "PLAY" to play the tone.

Multiple use cases
-Test your hearing and that of your surroundings by determining the range of frequencies that you are able to hear.
On average the human ear perceives frequencies between 20Hz and 20000Hz but this perception can deteriorate with age especially for frequencies close to ultrasound.

-Experience the acoustic beat phenomenon: For example launch the application on two devices and then generate a frequency of 440Hz on one and 443Hz on the other.
You will then hear a "beat" of frequency 3Hz. This phenomenon is frequently exploited by musicians to tune their instruments by ear.

-Test your speakers and other audio devices.


The generated signal is a sine wave.