Check that your microphone works before a call. Pick a device, see the input level and a live frequency spectrum, try echo cancellation and noise suppression, and record a short clip to hear how you sound.
Runs entirely in your browser. Nothing you put in here gets uploaded.
This tool checks that your microphone works before a call. Nothing listens until you press Start. You get a level meter in dBFS with peak hold, a live frequency spectrum and a plain verdict such as We hear you, Very quiet or No signal.
Switch echo cancellation, noise suppression and auto gain on and off to hear what they change, and record a few seconds to play back how you sound. To check your camera as well, use the Webcam Test.
The tool explains what the browser reported and what to do next. Blocked means the site or your operating system has denied access, and the fix is in the site settings next to the address bar or in the privacy settings of macOS or Windows. Busy almost always means another app or tab is holding the microphone, so close video calls and other recording apps first. No device found means the browser cannot see a microphone, and one you plug in afterwards shows up without a reload.
The meter runs from -60 to 0 dBFS, where 0 is the loudest value digital audio can hold. Normal speech should move the bar well into the upper half and stay out of the red. The marker shows the recent peak. If the signal hits the ceiling, the tool warns about clipping, which sounds harsh and cannot be repaired afterwards, so lower the input gain or move back a little.
Auto gain changes the level on its own, so switch it off if you want to judge the raw input. Noise suppression can turn a quiet room into true silence, which is why the verdict may read No signal until you speak.
The microphone stops when you press Stop, leave the page or switch to another tab, so nothing keeps running in the background. Coming back never restarts it on its own. A clip that was still recording keeps what it captured so far.
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