Sound Exposure Level

Sound exposure level abbreviated as SEL and LAE, is the total noise energy produced from a single noise event. The Sound Exposure Level is a metric used to describe the amount of noise from an event such as an individual aircraft flyover. It is computed from measured dBA sound levels. The Sound Exposure Level is the integration of all the acoustic energy contained within the event.

where
LAk = A-weighted sound pressure level [dB(A)]

Note that the sound pressure level as measured at t1 and t2 should be at least 10dB below the maximum sound pressure level measured.

LAE is related to LAeqT by the following equation:


where
LAE = Sound Exposure Level [dB]
LAeqT = Equivalent Continuous Sound Level [dB]

See also: Community Noise Criteria.

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Subjects: Noise & Vibration