Online Sound Test – Test Your Speakers & Audio

By SpeakerSoundTest TeamUpdated November 11, 2026

Sound test, audio test or speaker check – what this page does

Whether you call it a sound test, an audio test, a speaker check or a speaker tester, the goal is the same: to check your sound quickly and see whether every speaker plays from the right place. The panel above plays test sounds through the left and right channels, both together, a bass tone, a treble tone and a full frequency sweep. If you only want to check sound on your computer or phone, press Full Speaker Test and follow the highlighted steps – it takes about 25 seconds.

How to use this speaker test

This free speaker test checks the most common problems with computer speakers, phone speakers, TV soundbars, Bluetooth speakers and car audio. All you need is a browser. The sounds are created on your own device, so the test works offline once the page has loaded and nothing is recorded.

1. Set your device volume to around 30%. You can raise it later. Use the volume slider on this page for fine control.
2. Press "Left speaker". Sound should come only from the left side. If it comes from the right, your speakers are swapped. If it comes from both, your device may be set to mono.
3. Press "Right speaker". Sound should come only from the right side.
4. Press "Both speakers". The sound should feel like it is coming from a point in the middle, between the speakers. If it leans to one side, check the balance setting of your device.
5. Run the bass and treble checks to hear whether low and high sounds are clean, without buzzing, rattling or crackling.
6. Finish with the full sweep. It glides from 20 Hz to 20,000 Hz in 20 seconds. Watch the live readout and note the frequency where you first hear sound and where it fades out.

What each test checks

Why the test uses pink noise

The left, right and centre tests use pink noise instead of a single beep. Pink noise contains every frequency at once, with more energy in the lows, which is close to how music sounds. It makes it much easier to tell where a sound is coming from, and problems such as a blown tweeter or a muffled woofer are easier to spot than with a pure tone.

Common speaker problems and how to fix them

No sound at all

• Check that your device is not muted and the correct output is selected. On Windows, click the speaker icon in the taskbar and choose your speakers. On a Mac, open System Settings → Sound → Output.
• Make sure the browser tab is not muted. Right-click the tab and look for "Unmute site".
• For Bluetooth speakers, disconnect and reconnect, and confirm the speaker is charged.
• For wired speakers, check the power, the volume knob on the speaker itself and the 3.5 mm or USB cable.

Sound comes from only one speaker

• Check the balance setting. On Windows open Sound settings → your device → Properties and make sure left and right are equal. On iPhone and Android, look under Accessibility → Audio.
• Turn off "Mono audio" if you want true stereo.
• Try a different cable or port. A half-inserted 3.5 mm plug often plays only one channel.

Left and right are swapped

Swap the speaker positions or the left/right cables at the back of the amplifier or speaker. On some speaker systems, the right speaker holds the controls and the left speaker connects to it with a separate cable.

Crackling, buzzing or distortion

• Lower the volume. Many small speakers distort near maximum volume, especially with bass.
• If buzzing appears only at certain bass frequencies, something nearby may be vibrating. Move objects away from the speaker or tighten loose screws.
• Crackling that changes when you move the cable usually means a damaged cable or a dirty connector.
• Constant crackle on all sounds can be a sign of a damaged speaker cone or a driver problem. Update or reinstall the audio driver on a computer.

What frequency range should you expect?

Human hearing covers roughly 20 Hz to 20,000 Hz, and the upper limit drops with age. Speakers are smaller than the sound waves they need to create at low frequencies, so most devices cannot play the very bottom of that range.

These are rough guide values. Use the bass test to find the exact point where your own speakers stop producing sound.

Testing different types of speakers

Laptop and PC speakers

Run the left and right tests first. Many laptops have speakers on the bottom edge, so placing the laptop on a hard desk instead of a bed or sofa can make a big difference to volume and bass.

Phone speakers

Many phones use the earpiece as a second speaker. Hold the phone sideways (landscape) to hear the stereo effect. If one side is much quieter, the speaker grille may be blocked by dust or a case.

Bluetooth speakers

A single Bluetooth speaker is often mono, so left and right will sound the same. This is normal. If you pair two speakers as a stereo pair, the left and right tests will show which one is which.

TV, soundbar and home theatre

Open this page in the TV browser or cast it from your phone or laptop. For surround systems, the stereo left and right tests check the front speakers. Use the subwoofer test to check the sub.