Check that your microphone actually works before the meeting: enable it, watch the live level meter and scrolling waveform react to your voice, and read off the sample rate and channel count your browser negotiated. The record-and-playback loop lets you hear exactly what apps on the other end receive — the fastest way to catch a muffled headset or a too-hot gain setting.
Everything runs locally — your audio is never recorded to or transmitted from any server. Testing the rest of your setup? The webcam test covers your camera, the keyboard test checks every key, and the text to speech tool exercises your speakers.
Frequently asked questions
Is my microphone audio sent anywhere?
No. The audio stream is analyzed entirely inside your browser using the Web Audio API — nothing is transmitted, stored, or logged on any server. Even the optional test recording lives only in your browser's memory and disappears when you leave the page.
Why is the level meter not moving?
Work down this list: the wrong input device is selected (use the microphone dropdown), the mic is muted in your OS or on the headset's inline switch, the browser picked a virtual device like "Stereo Mix", or another app has exclusive control. If the meter twitches but barely moves, raise the input gain in your OS sound settings.
What does dBFS mean?
Decibels relative to full scale — the loudest signal a digital system can represent is 0 dBFS, and everything quieter is negative. Normal speech on a healthy mic setup should bounce roughly between −30 and −10 dBFS. Levels that pin near 0 dBFS will clip and distort; levels stuck below −50 dBFS are too quiet.
How do I test a headset or USB microphone?
Plug it in first, then start the test. If your system has several inputs, a microphone dropdown appears once access is granted — switching it restarts the meter on the chosen device. If the device is missing, check that the OS sees it and that no other app holds it exclusively.
Why do I sound quiet or muffled in the recording?
The played-back clip is exactly what apps receive from your mic. Quiet usually means low input gain; muffled often means the mic is obstructed, too far away, or the browser latched onto a laptop's internal mic instead of your headset. Fix the device selection and gain, then record again to confirm.