Is the recording sent to a server?

No. The audio is processed in your browser and the levels are computed on your device. We never receive or store a recording.

Why does it ask for silence first?

Three seconds of silence measure the room. Without that you cannot tell quiet speech from loud speech in a noisy place, and the second one is what usually bothers the other side.

Does this show how I sound in Zoom?

Not exactly. We measure the sound as it enters the browser. Zoom, Discord and others add their own processing that we cannot see. But if the sound is quiet or noisy here, it will not get better there.

Microphone test online

This test does not tell you whether there is a signal. It gives you three numbers with an explanation: how loud your speech is, how noisy the room is, and the headroom between them. That headroom decides whether people hear you or your room. The audio never leaves your browser.

Microphone test

Not a moving line, but numbers: how loud you sound and what gets in the way.

The check runs in two parts: three seconds of silence, then five seconds of normal speech. The sound stays in your browser and is never sent anywhere.

Nothing recorded leaves your device: the levels are measured right in the browser.

You need a meeting transcript, not a test

We cannot turn a recording into text here without breaking our own promise: browser speech recognition either does not exist (Firefox) or sends the audio to somebody else servers (Chrome). For meetings there is Konspekt, which records and transcribes on your own computer.

Open Konspekt

What the test shows

Speech level in dBFS with a verdict: quiet, fine or clipping
Room noise, measured separately during silence
The headroom between speech and noise — the number nobody else shows
Sample rate, channel count and the processing the browser reports

Questions

Is the recording sent to a server?: No. The audio is processed in your browser and the levels are computed on your device. We never receive or store a recording.
Why does it ask for silence first?: Three seconds of silence measure the room. Without that you cannot tell quiet speech from loud speech in a noisy place, and the second one is what usually bothers the other side.
Does this show how I sound in Zoom?: Not exactly. We measure the sound as it enters the browser. Zoom, Discord and others add their own processing that we cannot see. But if the sound is quiet or noisy here, it will not get better there.