No. The tool only analyzes instantaneous level to drive the meter; nothing is recorded or sent to a server. Stopping the microphone ends local capture.
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Visual microphone level and peak meter
"Can you hear me?" is the question that opens half of all online meetings. This test answers it before you join the call: after permission, it connects the microphone stream to a Web Audio API AnalyserNode, reads the signal's waveform and turns it into a visual level and peak meter that moves when you speak. It is a quick way to confirm the right microphone is picking up and at enough volume. Everything happens in the browser, nothing is recorded or uploaded; the audio only drives the meter.
Level tracks the sound intensity at that instant, it rises when you speak and drops in silence. Peak records the recent maximum, useful to see whether a loud sound "clips" or the microphone is too weak. If the meter does not move while you speak, the problem is almost never your voice: it is usually the wrong microphone selected, a system mute, or a denied permission.
The scale is visual and relative, not a professional dB SPL measurement, which would need a calibrated microphone and dedicated software. It answers "is there a signal, and is it strong enough?", which is exactly what matters before a call, a home recording or a livestream.
Example 1, before a meeting: start the microphone and speak in a normal tone about 20–30 cm away. The level should rise consistently, with peaks when you speak louder. If it stays very low, move closer, raise the input volume in the system settings, or check that the right microphone is selected.
Example 2, validating a new headset: connect the device, reload the page and test. If the meter does not react, the system may still be using the built-in microphone as default, switch the default input device in the operating system and test again.
"Permission denied" means the site was blocked, reopen the padlock in the address bar and allow the microphone. "The microphone is in use" (NotReadableError) usually means another app (a call, a recorder, OBS) grabbed the device; close it and try again. The message asking for HTTPS shows the page is not in a secure context, which audio requires.
If the meter stays flat even with permission granted, check three things: the system's default input device (it may point to the wrong microphone), a physical mute button on the headset, and the input volume/gain in the operating system's sound settings.
These references help contextualize formulas, standards, APIs and limitations used on this page. They do not replace professional validation when a result has legal, financial, medical or operational impact.
No. The tool only analyzes instantaneous level to drive the meter; nothing is recorded or sent to a server. Stopping the microphone ends local capture.
Audio is analyzed locally for visual level; nothing is recorded or uploaded.