Good
Clean, undistorted sound on both channels, correctly placed left and right, with audible treble, a smooth bass sweep and no crackling at normal volume.
Sound Tester
Run a 10-second speaker check for clarity, bass response, stereo separation, distortion and rattling using lightweight browser-generated audio. Start at a safe volume, then listen for clean output from the expected side.
10-second speaker test
Listen for crackling, distortion, imbalance, rattling, or weak bass. Keep the volume at a safe level before starting.
Ready to play the speaker test.
Quick channel checks
The full test opens with a short music melody, then runs treble clarity, bass sweep, and left/right stereo parts.
About the speaker and sound test
The sound tester generates test audio directly in your browser — left and right channel tones, a treble check, a bass sweep and a ten-second full test — so you can confirm your speakers or headphones are working and wired the right way round. Because the tones are generated locally rather than streamed, the test works even on a flaky connection and starts instantly.
Stereo direction is the check people need most often. Headphones worn the wrong way, a half-seated 3.5 mm plug, or an accidental mono-audio accessibility setting all collapse or swap the channels, and a two-second left/right test exposes each of those immediately. The bass sweep and treble tone then let you listen for rattles, buzzing or dropouts across the frequency range.
Like every tool on this site, it also splits the fault domain: if audio plays cleanly here but a particular game or app is silent, your output hardware and drivers are fine, and the problem is that app’s output-device selection or volume mixer entry. Start at a modest volume — especially with headphones on — and raise it gradually.
What it looks like in use
How to interpret the speaker test
This page plays generated audio so you can listen for sound output, stereo direction, treble clarity, bass response and unwanted noise.
What this test checks
- Whether the browser can create and play audio through the selected output device.
- Left and right channel routing for headphones, speakers and USB audio devices.
- Treble clarity, bass sweep response and rattling or buzzing during the full test.
- Basic tab audio behaviour, mute state and safe volume before deeper driver checks.
How to understand your results
- A good result is clean, balanced sound from the expected side with no crackling, buzzing or sudden dropouts.
- If both channel buttons sound centred, mono audio, accessibility settings or a single speaker setup may be collapsing stereo.
- Weak bass is common on small laptop speakers. Distortion at moderate volume is more concerning than limited low-end response.
- If this page plays audio but another app does not, the hardware is likely working and the issue is app-specific.
Common problems and fixes
No sound
Check system volume, tab mute, output device selection and Bluetooth headphone connection state.
Wrong side plays
Check headphone orientation, cable seating and any balance settings in the operating system.
Crackling or buzzing
Lower the volume, unplug external devices, try another browser and inspect speakers for debris or damage.
Bluetooth delay
Wireless audio can add latency. Retest with wired headphones if timing matters for gaming or editing.
FAQ
Can browser audio damage speakers?
The test uses modest generated tones, but you should still start at a safe volume and increase carefully.
Why does speech not always play?
Speech synthesis is optional and browser-dependent. The tone checks still run without it.
Can this test surround sound?
No. It focuses on browser stereo output, which is the most common issue for laptops, headphones and meetings.
Why do left and right sound swapped?
Usually the headphones are on backwards or an adapter crossed the channels. If the OS balance settings and orientation are correct and it is still swapped, the cable or jack wiring is at fault.
What does buzzing during the bass sweep mean?
A rattle or buzz at specific low frequencies often means a loose speaker cone, debris in the grille or a resonating laptop panel. If it appears at low volume too, the driver itself may be damaged.
How do I test new headphones properly?
Run each channel tone to confirm placement, sweep the bass to listen for rattle, then play the full test at your normal listening level. Two minutes here catches most faults a return window would cover.
Browser-based test disclaimer
TestMyPC results are browser-based and may vary depending on your device, browser, operating system, permissions, drivers, connection, power settings and connected accessories. Use these tools as practical first checks, then confirm important faults with operating-system diagnostics, manufacturer tools or a qualified technician where needed.