About this test
The tone generator produces a clean, continuous tone at any frequency with fine-grained control. Use it to find speaker rattles, test a subwoofer's low end, tune an instrument, check tinnitus frequency matching or verify each channel. The display shows the nearest musical note.
How to use this test
- Set a low volume and choose a frequency or preset.
- Press Play or the space bar to start the tone.
- Use the fine buttons or slider to adjust while listening.
Frequently asked questions
Can a tone generator damage speakers?
Very loud low or high tones can. Keep the volume moderate, especially with square waves and frequencies below 40 Hz.
Which waveform should I use?
Sine is the purest tone. Square and sawtooth contain harmonics and sound harsher.