Microphone Test
Check that your mic works, how loud your voice comes through, and how much background noise it picks up. Runs in your browser — nothing is uploaded.
microphone off
Your browser will ask for microphone permission. Audio stays on this device — nothing is recorded or sent anywhere unless you press Record, and even then it only plays back here.
background noise
—
Stay silent and press “Measure noise”. It listens for three seconds.
your voice
—
Press “Measure voice” and talk normally for three seconds.
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Three readings, thirty seconds
A level meter alone tells you the mic is on. It does not tell you whether you will be understood. For that you need two numbers — how loud the room is, and how loud you are — and the gap between them.
- 01
Measure the noise
Stay silent for three seconds. This is the noise floor your voice has to beat.
- 02
Measure your voice
Talk normally for three seconds. You get your level and how far it sits above the noise.
- 03
Hear yourself
Record five seconds and play it back to catch hum, echo or a muffled mic.
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Common questions
How do I know if my microphone is working?
Press Start, allow microphone access, and speak. If the bar jumps when you talk and the number rises toward -20, the mic works. If the bar stays still, the wrong microphone is probably selected — pick another from the list.
What is a good background noise level?
Below -45 dBFS is a quiet room and fine for calls and speech recognition. Between -45 and -35 there is audible noise, like a fan or traffic. Above -35 the noise can bury quiet speech. What matters most is the gap between your voice and the noise: 15 dB or more is good.
Why dBFS and not decibels?
dBFS measures how loud the signal is compared with the loudest the microphone input can carry, where 0 is the maximum. A browser cannot know how sensitive your microphone is, so no website can honestly tell you the loudness of your room in real-world decibels.
Is my audio recorded or uploaded?
No. The test runs entirely in your browser. The 5-second recording stays in this tab so you can play it back, and it disappears when you close the page.
Why does my microphone not show up?
Either the browser was refused permission, or another app is using the microphone. Allow the microphone from the icon in the address bar, close apps like Zoom or Teams, and press Start again. On a Mac, also check System Settings → Privacy & Security → Microphone.
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Your mic is ready. Now say something in Japanese
OmniTalk turns that mic into a live interpreter: speak in your language and the other person hears it in theirs, in real time, across 60+ languages. Background noise matters for translation too — a good reading here means good results there.
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