How this test works
Uses MediaDevices and a Web Audio analyser after you explicitly grant permission.
ObservedPrecision label
P0 browser diagnostic
Microphone Test
Confirm that your selected microphone is available and producing a signal.
ObservedBrowser-nativeLocal processing
MI
Interactive test
Microphone diagnostic
◆Stays on deviceNo raw hardware upload
Input level0%
Recent peak 0%Capture Off
Your data flow
Audio is analysed in browser memory. DeviceDoctor does not record or upload it.
Read the privacy overview →What this cannot prove
- The level is relative, not calibrated dB SPL.
- Automatic gain control can change the observed level.
Fix common problems
- Check the physical mute switch and OS input level.
- Confirm the correct input is selected.
- Reset this site's microphone permission and retry.