Decibel Meter (Live Microphone dB)

Measure microphone level in dBFS with peak hold and estimated SPL. This uses browser audio APIs and may vary by microphone hardware and OS gain settings.

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Estimated SPL Offset (dB)

Smoothing EMA (0-0.99)

Peak Decay per Frame (dB)

Live dB Meter

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Estimated SPL

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History (Last ~30s)

Chart is in dBFS range (approximately -90 dBFS to 0 dBFS). White line is current smoothed level.