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About Sound Meter

Sound Meter uses the microphone in your device to measure changes in air pressure produced by sound sources. Measurements are presented in decibels (abbreviated as dB).

The decibel scale is logarithmic, meaning it increases by the power of 10 each time. The smallest audible sound is 0 dB. A sound that is 10 times more powerful is 10dB, a sound that is 1,000 times more powerful is 30 dB, and so on.

Note that microphone performance differs for each device. If needed, please calibrate the meter before use.

You can double tap the barchart to change the bar colors.

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