Home > Safety & Environmental Help and Guidance > Noise at Work Assessments > Sound Exposure Level – What is it and how is it calculated?
Sound Exposure Level, or SEL, is an Leq which is normalised to 1 second. The SEL can be used to compare the energy of noise events which have different time durations.
SEL is also referred to as LE.
Where time is the exposure time of the Leq value expressed in seconds.
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