Allow the microphone
Press Start and allow the microphone when the browser asks. Pick another microphone from the list if you have more than one.
Check that your microphone works and sounds right: a live level meter in decibels, waveform and spectrum, a noise-floor measurement and a speaking-level guide. Record a short clip to hear yourself, and try echo cancellation, noise suppression and automatic gain on and off.
Open Mic Test →Press Start and allow the microphone when the browser asks. Pick another microphone from the list if you have more than one.
Talk at your normal distance. The level guide says whether you are too quiet, good or too loud, and the spectrum shows your voice.
Record 10, 20 or 30 seconds and play it back to hear exactly what others hear. Save it as WAV if you want to keep it.
Use Manlin to reflect, plan and take your next step.

Press Start, allow the microphone and speak. If the level meter and waveform move, the browser is receiving sound. Use the level guide to set a good speaking level, and record a short clip to hear how you sound.
Check that the right microphone is selected in the list, that it isn’t muted by a switch or in your system sound settings, and that no other app has taken it. On a laptop, some keyboards have a microphone mute key. If the browser blocked it, allow it from the address bar.
They are decibels relative to full scale (dBFS): 0 dB is the maximum, everything else is negative. Each 6 dB is roughly double or half the signal. A normal speaking voice should peak between about −18 and −6 dB.
For calls, usually yes: they remove echo from speakers and steady background noise. For music or recording a good room, turn them off to keep the sound natural. The page restarts the microphone with your choice and shows what the browser actually applied.
Below −60 dBFS is very good, −60 to −45 dB is acceptable, and above −45 dB the background will be audible. Fans, air conditioning, laptop noise and high microphone gain raise the noise floor.
With speakers, the microphone picks up its own sound and it loops round, which can turn into a loud howl (feedback). Headphones prevent that.
No. The meter and displays work on the live sound in your browser. A recording is only made when you press Record, stays in the page, and is saved only if you download it. Nothing is sent anywhere.