Start audio
Tap Play or press Space. Your browser requires a gesture before audio can play.
Microphone Test
Check mic input levels locally โ permission only on your action.
Microphone access is requested only when you click Start. Audio never leaves your browser. Stop releases the mic.
Microphone off
What this test shows
A live input level meter and waveform display confirm your microphone is working and show relative loudness. Useful before calls, recordings, or using our Guitar Tuner.
Privacy
We do not record, store, or upload audio. The MediaStream is created only after you click Start and is destroyed when you click Stop โ the browser mic indicator should turn off.
If access is denied
Check browser permissions (lock icon in the address bar). On macOS, also verify System Settings โ Privacy โ Microphone includes your browser.
How to use
Adjust settings
Use sliders and controls to set frequency, volume, and waveform. Changes apply in real time.
Export or share
Download a WAV file or copy a share link. All processing stays on your device.
Frequently asked questions
Is my microphone audio uploaded?
No. Audio stays in your browser.