Sonitus

Generate frequencies in the audio range from 20Hz up to 20kHz. Test your hearing and compare with your friends. Use it to tune your instrument or simply annoy your neighbour's dog.

Test audio equipment using a fixed frequency or a frequency sweep that sweeps the frequency in a logarithmic scale from 20Hz to 20kHz.

The frequency can be selected by turning the knob or by entering the exact desired frequency using the keyboard.