Microphone Test
Real-time dB meter, visualizer & frequency bands, noise detection, quality grading, record & save up to 10 clips — 100% private.
Online Microphone Test
Verify your mic is working, measure audio levels in real decibels, detect background noise, and analyze frequency response — all in your browser with zero uploads and zero data collection. Use it before Zoom calls, Discord sessions, podcast recordings, or live streams.
How to Use
- Click Start Test and allow microphone access.
- Speak and watch the real-time dB meter and visualizer.
- Check Frequency Bands (Sub, Bass, Mid, High, Air) for your mic's character.
- Use Record to capture a clip and Download to save as WAV.
- Check your Quality Grade (A–F) and Noise Analysis.
Understanding dB Levels
- –60 to –30 dB — Background noise floor
- –30 to –18 dB — Quiet ambient speech
- –18 to –12 dB — Optimal recording range for voice
- –12 to –6 dB — Loud but safe
- –6 to 0 dB — Risk of clipping — lower gain
- 0 dB+ — Clipping (distortion) — reduce gain immediately
Common Issues
- No signal? Check browser permissions and select the correct input device.
- Too quiet? Increase input gain in system Sound Settings.
- High noise? Move away from fans/AC; enable noise suppression (NVIDIA Broadcast, Discord Krisp).
- Electrical hum? Try a different USB port or use balanced XLR.
Frequently Asked Questions
Why can't I hear myself during the test?
Monitoring is disabled by default to prevent feedback. Click Monitor and use headphones to hear yourself.
What do the frequency bands mean?
Sub (20–80 Hz): rumble. Bass (80–300 Hz): warmth. Mid (300–3kHz): speech clarity. High (3–8 kHz): presence. Air (8–20 kHz): brightness.
What does the Quality Grade mean?
A: Excellent signal. B: Good with minor issues. C: Moderate noise. D: Needs improvement. F: Malfunctioning or muted.