sauter KERN SW 1000 Instruction Manual page 54

⚫ LEQ1: The time average sound level or an equivalent continuous sound level. The
10-fold logarithm to base 10 of the ratio of the square of the average time of a
frequency weighted sound pressure signal during a specified time interval and the
square of the reference value LEQ is the current integral value of the sound level at
the specified duration. The longer the integral period, the slower LEQ changes.
LEQ is often used for the overall assessment of noise exposure.
⚫ Peak one: Peak sound level The 10-fold logarithm to base 10 of the ratio of the
square of a frequency weighted peak sound pressure signal to the square of the
reference value. This value is usually used to evaluate very short sound pulses.
⚫
E1
: Noise exposure Time integral of the square of a frequency weighted sound
pressure signal for a defined time interval or an event of defined duration. This
value is always used to evaluate the noise impact on humans.
⚫ SEL1: Noise exposure The 10-fold logarithm to base 10 of the ratio of a noise
exposure to a reference value Sometimes referred to as "single event level".
⚫ LN: Statistical analysis result The noise level that exceeded N % for the
measurement period.
⚫ Max1: Maximum time of weighted sound level within the specified duration
⚫ Min: Minimum time of the weighted sound level within the specified duration.
⚫ SD: Time-weighted sound level of the standard deviation within the specified
duration SD is used to describe the degree of variation of the sound level
Note 1: For further details, see the definition in IEC 61672.1:2013.
Note:
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54 SW-BA-e-2020