Check that your microphone works and picks up sound. Speak and watch the live input level meter. Nothing is recorded or uploaded.
The audio is analysed live in your browser and never recorded or uploaded. If the meter stays flat while you speak, check that the right microphone is selected in your system settings and that access was not blocked in the address bar.
No. The sound is analysed in real time only to drive the level meter, and is never recorded, stored or uploaded. Everything happens locally in your browser.
Your system may be using a different microphone, the input may be muted, or access was blocked. Check your operating system's sound input settings and the microphone permission in the browser's address bar.
Yes. It tests whichever microphone your browser uses by default. Select the device you want as the default input in your system settings, then start the test.