doseBadge User Manual
Page 47
CE Marking
A label used to show that the Sound Level Meter conforms to the
specification of a European Directive
dB(A)
Decibels A weighted
dB(C)
Decibels C Weighted
Decibel (dB)
The units of sound level and noise exposure measurement
Fast Time Weighting
A standard time weighting applied by the Sound Level Meter
IEC 61252:1993
The International Standard for Personal Sound Exposure Meters
(PSEM)
Integrating Averaging
Sound Level Meter
A Sound Level Meter which accumulates the total sound energy
over a measurement period and calculates an average
L
AE
Sound Exposure Level (SEL) with “A” frequency weighting
L
Aeq,t
Equivalent continuous sound pressure level. A measure of the
average sound pressure level during a period of time, t, in dB
with “A” weighting.
L
AS
Sound level with “A” Frequency weighting and Slow Time
weighting
L
ASmax
The maximum Sound level with “A” Frequency weighting and
Slow Time weighting
L
Cpeak
Peak Sound pressure level with “C” frequency weighting
L
EP,d
Daily personal noise exposure as defined by ISO 1999. This is the
L
Aeq,t
normalised over an 8 hour reference period. L
EP,d
assumes
that the noise level for the rest of the 8 hour reference period is
"quiet".
L
eq
Equivalent continuous sound pressure level. A measure of the
average sound pressure level during a period of time, t, in dB
Overload
The input to the Sound Level Meter is too high for the current
measurement range. Change the range
Peak
The maximum value reached by the sound pressure at any
instant during a measurement period (in dB usually with C
frequency weighting)
Personal Sound Exposure
Meter
An instrument for measuring the noise exposure of a person
SEL
Sound Exposure Level, displayed as L
AE
Slow Time Weighting
A standard time weighting applied by the Noise Measurement
Instrument
Sound Level
Sound Pressure Level with a Frequency weighting, such as dB(A)
SPL
Sound Pressure Level, the basic measure of noise loudness,
