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I/O Checkup
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Microphone Tests

Check input level, clipping, background noise, frequencies, and channels.

Microphone Test

Check microphone permission, input level, peak signal, and detected audio source.

Microphone Volume Meter

Measure live microphone volume, peak level, and input headroom.

Noise Level Meter

Observe digital microphone signal levels in dBFS. This is not a calibrated measurement of room sound pressure in dB SPL.

Microphone Frequency Analyzer

Visualize microphone frequency content and dominant pitch with Web Audio.

Microphone Channel Check

Check mono or stereo microphone channel levels and balance.

Before you begin

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.