What to do
Speak at a consistent distance, then try the loudest sound you expect to record.
Microphone Volume Meter
Measure live microphone volume, peak level, and input headroom.
Idle0Input Level
Peak0%
ChannelsUnavailable
Digital levelNot measured
Local history
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How to use this test
What to look for
A peak near full scale means the digital signal has little headroom. Lower the input gain if loud sounds clip.
Web Audio analyzes the microphone signal after you grant access. dBFS describes digital signal level; it is not calibrated sound pressure in dB SPL. Gain, noise suppression, distance, and room noise affect readings.