GEARCHECK LAB
Audio Lab // Input Diagnostics

MICROPHONE LEVEL & INPUT TEST

Check whether your microphone is producing a live input signal, watch a local level meter and peak hold, and inspect the active device label and browser audio sample rate.

NO RECORDINGThis page analyzes the microphone stream locally and does not save, play back or upload your audio.
Live diagnostic

Microphone input level

MICROPHONE PERMISSION REQUIRED
0% live level
SILENTNORMAL ACTIVITYHIGH

How to test a microphone

  1. Press Start Microphone and allow browser permission.
  2. Speak at your normal distance and volume.
  3. Confirm the live level meter rises and falls with your voice.
  4. Pause speaking to check whether background noise keeps the meter elevated.
  5. Stop the microphone when finished so the browser releases the audio track.

What the level meter means

The percentage is derived from the short-term waveform energy reported by the Web Audio analyser. It is useful for confirming input activity and comparing relative levels within the session.

This is not a calibrated dB SPL meter. Browser gain control, operating-system input gain, microphone sensitivity and distance all affect the value.

Common microphone problems

  • No movement at all despite permission being granted.
  • Very low level even at normal speaking distance.
  • Meter remains very high when the room is quiet.
  • Level jumps or cuts out intermittently.
  • The wrong microphone device is selected by the browser or operating system.

Processing and browser behavior

The test requests audio with echo cancellation, noise suppression and automatic gain control disabled where the browser honors those constraints. Some browsers, drivers or devices can still apply processing outside the page.

The sample rate shown is the active Web Audio context rate, not necessarily the microphone hardware's only supported rate.

Microphone test FAQ

Does this page record my voice?

No. It reads short waveform buffers only to calculate live level and render the visual meter.

Why is my microphone name hidden before permission?

Browsers often hide media-device labels until permission is granted.

Can I use the percentage to set exact recording gain?

Use it as a relative guide only. For production recording, use the level meters in your recording or streaming application.