Sound test
Check your speakers with test sounds made right in the browser: does each speaker play, how low the bass goes, whether anything rattles, and whether a pair is wired in phase.
Turn the volume down first
Test sounds are capped at −12 dBFS, but start quiet and raise the volume slowly — especially with headphones on.
This browser has no Web Audio support, so it cannot play test sounds. Try a current Chrome, Edge, Firefox or Safari.
Camera and microphone are off. Press start to test again.
Result
Press start to get a result. Nothing starts on its own.
What we measured
| Readings appear here once the test is running. |
Short answer
To test speakers, lower the volume, press Start sound test and play the cue for each speaker: one beep belongs to the first, two to the second. Then play the sweep and press “I hear it now” when the tone appears; small speakers typically start around 80–120 Hz.
What to fix
- No sound Check the output device (here or in system settings), the mute key, and the volume of the browser tab.
- Left and right swapped Swap the speaker cables or check a “swap channels” option in the audio driver.
- Rattle at a certain frequency Lower the volume, tighten loose panels, and move objects off the speaker.
- Thin, hollow sound from a pair If “out of phase” sounds fuller, reverse + and − on one speaker.
Questions
How do I test my speakers?
Lower the volume, press Start sound test, and play the cue for each speaker, the sweep and the bass tones. The test cannot listen to your speakers, so it relies on your answers: tell it where each cue came from and mark where the sweep becomes audible.
Is this test safe for my speakers?
Test sounds are capped at −12 dBFS and pass a limiter, but always start with the volume low, especially for bass tones.
Why can't I hear the lowest tones?
Laptops and small speakers cannot reproduce deep bass, and hearing varies from person to person. That is normal. The sweep shows where you start to hear the tone on your setup — it is not a lab frequency-response measurement.
Can I check the polarity of a single speaker?
Not by ear. The polarity test compares a pair: clicks in phase, then with one channel inverted. The version that sounds fuller and more centred is the correct wiring; with one speaker there is nothing to compare against.
Why does the reported output latency look lower than what I notice?
The figure is what the browser reports for the output device. Bluetooth codecs often leave their own delay out of it; the flash-and-click test on the headphone test lets you measure the delay you actually perceive.
Also check before the call
- Headphone test left/right, balance and Bluetooth delay checks for headphones.
- Webcam & mic rehearse a call once the speakers sound right.
How this stays on your device
Every test sound is calculated by the page itself, so pressing play fetches nothing — the Network box below stays empty.
Requests after load
Want proof? Open the browser's developer tools on the Network tab and run a test: the list holds only this site's own files.