Select Audio Output Device:

To use headphones or speakers, change the settings directly in your browser or device.

How to Use:

• Test from 50 Hz to 2000 Hz
• Set the frequency and volume, then press ‘Start’ to play the sound.
• If you hear the sound, press ‘Heard’; if not, press ‘Not Heard’.
• After the test, press ‘Stop’ or check the ‘Result’.

Precautions:

• Very high volume can cause hearing damage.
• Test in a quiet environment.