Stereo Separation Test
Verify that left and right audio channels are clearly separated through your speakers or headphones.
Left and right channel isolation and crosstalk level are evaluated. Click Start Test and listen for sound appearing from only the correct side each time.
What does this test measure?
Left and right channel isolation and crosstalk level are evaluated.
Why is this test important?
Verify that left and right audio channels are clearly separated through your speakers or headphones.
How do you run the test?
Click Start Test and listen for sound appearing from only the correct side each time.
How should results be interpreted?
Clear channel separation with no bleed means your audio setup is working correctly.
Normal and problematic results
Clear channel separation with no bleed means your audio setup is working correctly.
Technical limitations
Mono speakers or incorrectly wired audio jacks will fail the stereo separation check.
Why can the score decrease?
Unstable measurements, denied permissions, unsupported browser APIs, background load, power saving, or an incomplete test can affect the result. When a score changes, the result screen explains the reason.
What should you do if a problem is found?
Check audio cable connections, ensure stereo output is selected in system settings.
Example Result Explanation
Frequently Asked Questions
Does this test provide a definitive hardware diagnosis?
No. The test measures signals the browser can safely access and clearly explains its technical limits.
Why can results change between runs?
Background applications, power mode, network conditions, permissions, and operating-system timing can affect results.
How should I repeat the test if I see a problem?
Repeat it on the same device and browser while changing only one condition, so the source of the difference is easier to identify.