Audio

Sound Test

Test your speakers or headphones with L/R balance, frequency response, bass test, tone generator, and phase check.

Start with low volume! Test tones at high volume can damage speakers and harm your hearing.
Ready — select a test below
40%
Left
Right
440Hz
Mids — Vocals, instruments
20 Hz 1kHz 10kHz 20kHz
60Hz
Sub Bass
20Hz 150Hz
30 Hz
Sub-Bass
Requires subwoofer or large headphones
60 Hz
Deep Bass
Kick drums, bass rumble
100 Hz
Mid-Bass
Most speakers can reproduce
200 Hz
Upper Bass
Warmth, body of instruments
40 Hz
Low Sub-Bass
Movie theater rumble
150 Hz
Lower Mids
Bass guitar, cello range
440Hz

Phase test checks if both speakers move in sync. In Phase sounds focused. Out of Phase sounds hollow and wide.

Left Channel
vs
Right Channel
✅
In Phase
Both speakers push air at the same time. Bass is full and sound appears centered.
⚠️
Out of Phase
One speaker is inverted. Bass cancels out, sound appears scattered and thin.

About the Sound Test

The Speaker & Headphone Sound Test is a comprehensive audio diagnostic suite that verifies your stereo setup. It tests left/right channel balance, frequency response from 20Hz to 20kHz, bass capability, custom tone generation, and speaker phase polarity — all from your browser using the Web Audio API.

How to Use

  1. Put on your headphones or sit in the "sweet spot" between your speakers.
  2. Use the Balance tab to test Left/Right channels individually.
  3. Use the Frequency tab to sweep through your device's range (20Hz–20kHz).
  4. Use the Bass tab to find your device's low-frequency limit.
  5. Use the Tone Generator to create custom test tones with different waveforms.
  6. Use the Phase tab to check speaker polarity.

Frequency Response Ranges

  • 20–60 Hz (Sub-Bass): Requires a subwoofer or high-quality over-ear headphones.
  • 60–250 Hz (Bass): Kick drums, bass guitars, low-end warmth.
  • 250 Hz–2 kHz (Mids): Vocals, most instruments, speech clarity.
  • 2–8 kHz (Treble): Detail, presence, consonant sounds.
  • 8–20 kHz (Brilliance): Air, shimmer, cymbal sparkle.

Troubleshooting Audio

  • Sound from both sides when clicking Left? Your system might be set to "Mono" in Accessibility settings, or the headphone jack is not fully inserted.
  • Left plays Right sound? Your headphones are backwards or speakers are plugged into the wrong ports.
  • Phase issues? Check if the positive (+) and negative (-) wires on your speakers are connected correctly.

How to Troubleshoot Stereo Problems

If left and right channels sound swapped, check system audio settings, driver enhancements, USB headset software, and any surround virtualization effects. Browser tests are useful because they remove many app-specific playback variables.

Frequently Asked Questions

What is a Phase Test?

It checks if your speakers move in sync (pushing air out at the same time). If one is reversed, bass response is cancelled out, leading to thin sound.

Does this work for Surround Sound (5.1)?

This tool is optimized for Stereo (2.0) and Headphones. For 5.1/7.1, you need specialized surround test files.

What frequency range should my speakers reproduce?

Good speakers cover 60Hz–20kHz. Studio monitors reach 40Hz+. Laptop speakers typically only go down to 200–300Hz.

Can this test damage my speakers?

At normal volumes, no. However, playing extremely low frequencies (sub-30Hz) at maximum volume can stress smaller speakers. Always start with low volume.