Microphone Test
Share tool
Only this public address is included. Your files, inputs and results stay out of the link.
Grant microphone access only when ready. Speak normally, inspect the live signal and optionally record a short sample to listen to yourself.
Preparing your tool…
How to use it
- Start the test and allow only the microphone you intend to check.
- Speak at your usual level and observe digital level, history and possible clipping.
- Optionally record a short sample. Wait for decoding verification, then play it with headphones.
- Stop device access. Select the report details, review the snapshot and copy or download the checked report.
A digital sine wave with peak amplitude 0.5 has approximately −9.03 dBFS RMS. This is a synthetic reference, not a microphone quality grade.
Details & limits
Explicit microphone permission. Sampled 2,048-sample windows, at most 10 observations/s. Optional recording up to 10 seconds / 5 MiB. Local session only; no acoustic calibration or call-app guarantee.
Does a visible signal mean my microphone works in every meeting app?
It establishes that this browser received samples. Other apps can use different devices, permissions and processing. Verify your selected input in the actual meeting app.