Microphone noise observation
Compare a quiet interval and speech using relative digital audio levels.
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. Results remain in this page’s memory until you download a report or leave. 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.
Related checks
Microphone test
See your input level, inspect the signal, and play back a private recording.
Microphone clipping test
Observe repeated peaks near digital full scale while you speak.
Speaker & stereo test
Check left, right, both channels and stereo movement at a comfortable volume.
Headphone test
Check earpiece separation, bass and a controlled frequency sweep.
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