MeterSeeDevice Checks
Private by design

Check your devices before the call.

Test your microphone, camera, speakers, keyboard, mouse, and display in the browser. Clear results, practical fixes, and no uploads.

Runs locallyWorks on any modern browser

Diagnostic 01 / Audio input

Microphone signal bench

Standby
LIVE WAVEFORMSTANDBY
−72−48−24−120 dB
Current-96 dBFS
Peak-96 dBFS
Noise floor-96 dBFS
Clip events0
Diagnostic result

Ready for a microphone sample

Run the test for 5–10 seconds while speaking at normal call volume. MeterSee will retain the peak, noise floor, and clip count when you stop.

Browser readings are diagnostic estimates, not calibrated laboratory measurements. dBFS values describe the digital signal level, not acoustic loudness in dB SPL.

Interpret the result

Separate a hardware problem from a browser problem.

A moving meter only proves that some signal reached the page. Use the pattern below to isolate the layer before changing equipment.

Observed signalLikely layerNext check
No signal, permission grantedSelected input or OS routing

Confirm the active device name, then check the operating-system input meter.

Peaks reach 0 dBFSInput gain or automatic gain

Lower hardware or OS input gain until speech peaks remain below −6 dBFS.

Noise floor above −38 dBFSRoom noise, fan, cable, or gain

Mute nearby sources and compare with a second input before replacing the microphone.