Svantek SVAN 971 - Definitions and Formulas of Additional Dosimeter Function Results

SVAN 971 User Manual – Appendixes
217
Lnn
Statistical level is the certain boundary level
surpassed by the temporary noise level
values in not more than n% of the observation
period
Example: Let us assume that L35 is
equal to 76.8 dB. It means that during
the measurements the noise level
76.8 dB was exceeded in not more than
35% of the observation period.
D.3 DEFINITIONS AND FORMULAS OF THE ADDITIONAL DOSIMETER FUNCTION RESULTS
DOSE
The DOSE result is the quantity of noise
received by the worker, expressed as the
percentage of the whole day acceptable
value.
 



T
0
q
LtL
h8
dt10
T
%100
DOSE
cd
D_8h
The D_8h result is the quantity of noise
received by the worker during 8 hours.
 
DOSE
T
T
dt10
T
%100
h8_D
h8
T
0
q
LtL
cd



PrDOSE
The PrDOSE result is the quantity of noise
received by the worker during exposure time.
 
DOSE
T
T
dt10
T
%100
DOSEPr
e
T
0
q
LtL
cd



LAV
The LAV result is the average level of the
acoustic pressure for the given time period
of the measurement.
 












T
0
q
tL
dt10
T
1
logqLAV
d
SEL8
The SEL8 result is the SEL result
corresponding to the integration time equal to
8 hours. The SEL8 result is calculated on the
base of the LEQ.
 
 
s1
sT
log10LEQ8SEL
h8

PSEL
Individual Sound Exposure Level to the noise
is equal to the standing sound level in a
measurement period. The PSEL result is
calculated on the base of the LEQ.
h8
T
T
log10LEQPSEL 
E
The E result (Exposition) represents the
amount of the acoustical energy received by
the worker.
 
10
LEQ
2
o
10p
3600
sT
E 
E_8h
The E_8h result (Exposition in 8 hours)
represents the amount of the acoustical
energy received
by the worker during 8 hours. The E_8h result
is expressed in the linear units [Pa
2
h].
 
10
LEQ
2
o
10ph8h8_E 