BSWA 308/309 BSWA Technology Co., Ltd
113
SEL
1
: Sound exposure level. Ten times the logarithm to the base 10 of the ratio of a sound
exposure to the reference value. It sometime called single event level.
LN: Statistical analysis result. The noise level exceeded for N% of the measurement
period.
Max
1
: Maximum time weighted sound level within stated duration.
Min: Minimum time weighted sound level within stated duration.
SD: Time weighted sound level of standard deviation within stated duration. SD is used to
describe the degree of dispersion changes of sound level.
Note 1: Refer to the definition of IEC 61672.1:2013 to earn more details.
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