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Real-time sound level measurement in dB(A). Minimum, average, and maximum levels for each session. 30-second sound level graph. Live sound visualization and manual calibration.
Sound meter: measure noise levels in dB(A) in real time.
Measure surrounding noise levels in dB(A) in real time and instantly see how loud your environment is. InDecibel uses your phone’s microphone as a simple sound meter and shows the current sound level, session statistics, and short-term noise changes. The app is useful for quickly checking sound levels at home, in the office, in a studio, during rehearsals, near speakers, equipment, tools, construction work, or outdoors. Main features • Real-time sound level measurement in dB(A) • Large and easy-to-read sound level gauge • Live sound wave visualization • Minimum, average, and maximum levels for the current session • Noise level graph for the last 30 seconds • Simple status such as Quiet, Normal, or Loud • Reset statistics and start a new measurement session • Manual calibration using a reference sound level meter Useful for • Checking noise levels in a room, office, or outdoor environment • Estimating volume during rehearsals, in music studios, or near speaker systems • Measuring noise from appliances, fans, tools, machines, or other equipment • Seeing how sound levels change over a short period of time • Comparing minimum, average, and maximum values during one session InDecibel does not record audio files. Sound is processed locally on your device only to provide an approximate noise level measurement. Results depend on the microphone and audio hardware of your specific smartphone, so the app is not a replacement for a certified professional sound level meter. No ads, subscriptions, or in-app purchases. Open the app, allow microphone access, and start measuring.