Microphone Test

The Microphone Test checks that your microphone is picking up sound with a live waveform display and a volume level meter, so you can confirm it works — and see exactly how sensitive it is — before a call, stream or recording. Whether you want to test my mic online before a video call, run a quick mic test online to verify a new headset, or check microphone volume levels before a recording session, this is the tool: click Start, grant microphone permission, and speak, clap or play music near the mic; the waveform traces your audio in real time and the level bar shows how loud the input currently is, along with a decaying peak indicator.

It's built on the Web Audio API: your microphone's raw audio stream feeds into an `AnalyserNode`, which continuously provides both time-domain waveform data (drawn to the canvas every animation frame) and the data used to compute a simple RMS-based volume level. This is the same underlying technique video-conferencing apps use for their own "testing your mic" indicators — this tool just exposes it directly and persistently rather than as a brief pre-call check.

Beyond a basic "does it work" check, the live meter makes it easy to diagnose specific problems: a mic that shows no waveform movement at all is likely not selected correctly at the OS level or physically muted; a level that barely moves even when you speak normally suggests low input gain or a mic placed too far away; and a meter that's pinned near 100% even at normal speaking volume suggests the input gain is too high and will clip in calls or recordings. If your device has multiple microphones, a dropdown lets you switch between them and compare their sensitivity directly.

The audio is analyzed entirely in your browser and is never recorded, uploaded or stored anywhere — closing the tab or clicking Stop ends the stream immediately with nothing retained. If you actually want to save audio rather than just test levels, use the companion Voice Recorder instead.