Microphone noise observation
Compare a quiet interval and speech using relative digital audio levels.
Diagnostic visuals retain their original colors and remain visible. Presentation filters and high contrast apply outside this workspace; device-level filters may still affect your observation.
Start the microphone. Stay quiet for three seconds, then speak for three seconds. Compare the two RMS samples.
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How to run this check
Start the microphone. Stay quiet for three seconds, then speak for three seconds. Compare the two RMS samples.
Understand the result
PASS describes a received signal or your recorded observation. WARNING calls for another check. USER REVIEW REQUIRED means a measurement alone cannot decide. An unavailable API or denied permission does not establish hardware failure.
What this cannot tell you
These are processed digital levels in dBFS, not calibrated room noise or an acoustic signal-to-noise ratio.
If something seems wrong
Compare mute, gain and noise suppression settings. Move closer and repeat both intervals.
Microphone troubleshooting →Good to know
Is anything uploaded?
Raw diagnostic input and media are processed locally. Standalone results remain in page memory. Guided checks offer optional coarse session recovery for 24 hours; it excludes media and detailed measurements. Hosting and Google Analytics requests still leave your browser. Analytics receives only broad test-usage categories, never these diagnostic contents. See the privacy policy.
Does a pass guarantee my hardware is healthy?
No. It records behavior observed in this browser session. Intermittent faults, internal components and operating-system restrictions need further investigation. See our methodology.
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