Sound Test

A sound test generates precise audio frequencies through your speakers or headphones to help you diagnose audio quality, channel balance, and frequency response. Our tool uses the Web Audio API to create mathematically perfect test tones—sine waves for pure tones, square waves for harsh digital sounds, sawtooth for buzzy synth-like tones, and triangle waves for a softer, rounded sound. By sweeping through the audible range (20 Hz to 20,000 Hz), you can identify dead spots, rattling, or distortion in your audio equipment.

Why Test Your Speakers?

New speakers, headphones, and sound systems should always be tested before use. Common issues include: a blown driver producing distortion at certain frequencies, a loose enclosure causing rattling at bass frequencies, reversed polarity (left and right swapped), or a faulty cable causing one channel to cut out. Our Left/Right/Stereo channel selector lets you isolate each speaker independently, while the frequency presets cover the full audible spectrum from deep sub-bass (20 Hz) through midrange (1 kHz) to ultra-high frequencies (20 kHz) that test the limits of human hearing.

How to Use This Tool

Select a waveform type, set your desired frequency using the slider or preset buttons, adjust the volume to a comfortable level, and click Play. The live waveform display shows you the exact shape of the audio signal being generated. Use the channel selector to test Left, Right, or Stereo output. Start with a low volume and gradually increase it—some frequencies, especially very low bass tones, can be surprisingly powerful and may damage speakers at high volume. For a thorough test, sweep through all 12 preset frequencies and listen for any distortion, crackling, or missing frequencies.