Sound Meter
Live approximate loudness + 20 s spectrogram (not a calibrated dB SPL meter).
-- dB
Approximate level (relative dB)
Quiet
Normal
Loud
Very Loud
Peak (session):
-- dB
Avg (last 3s):
-- dB
Start
Record
Stop
Initializing microphone…
Spectrogram
X axis: frequency (log-scaled Hz, up to 20 kHz). Y axis: time (top = now, bottom ≈ 20 s ago).