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Whats the difference between dB and dBA?

April 26, 2017DB DBA difference

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Whats the difference between dB and dBA?

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The intensity of sound is measured in units called decibels (dB). Intensity is perceived as loudness. The notation dBA refers to decibels measured on a sound level meter using the A-weighting filter network. Once the A-weighting scale is selected, the meter will mimic the way the human ear responds to sound. Occupational noise surveys must be done with a sound level meter using the A-weighting network.