SoundAdvisor Model 831C
B-5
FIGURE B-1
Windscreen Direction
EPS2116 Corrections
The following graph and table display correction factors for effects of the EPS2116 on the response of the
sound level meter. These are corrections are intended for laboratory use when testing to IEC 61672-3 to
account for effects of the EPS2116 when measurements are taken. See Table A.1 for the appropriate filter
selection in the sound level meter for a given test as well as the associated correction factor to be
applied. Note that the correction factors are tabulated in Table A.2.
8912.51
-0.40
-0.50
-0.37
-0.53
-0.67
-0.63
-0.70
-0.73
-0.73
-0.80
-0.73 -0.50 -0.50
9440.61
-0.37
-0.40
-0.37
-0.50
-0.67
-0.70
-0.70
-0.83
-0.77
-0.90
-0.93 -0.77 -0.60
10000.00
-0.13
-0.20
-0.27
-0.43
-0.57
-0.57
-0.77
-0.83
-0.77
-0.90
-0.97 -0.90 -0.70
10592.54
-0.20
-0.20
-0.17
-0.40
-0.47
-0.47
-0.70
-0.83
-0.83
-0.83
-0.97 -0.87 -0.70
11220.18
-0.47
-0.43
-0.37
-0.43
-0.53
-0.47
-0.70
-0.90
-0.77
-0.80
-0.77 -0.90 -0.67
11885.02
-0.67
-0.73
-0.63
-0.60
-0.73
-0.57
-0.83
-0.90
-0.83
-0.87
-0.73 -0.70 -0.70
12589.25
-0.57
-0.73
-0.83
-0.87
-0.97
-0.97
-1.00
-1.00
-1.00
-1.17
-1.07 -0.90 -0.90
13335.21
-0.70
-0.67
-0.63
-0.83
-1.00
-1.17
-1.10
-1.07
-1.07
-1.37
-1.53 -1.20 -1.13
14125.38
-0.40
-0.50
-0.57
-0.60
-0.90
-1.00
-1.00
-1.20
-1.17
-1.37
-1.63 -1.47 -1.20
14962.36
-0.70
-0.73
-0.53
-0.73
-0.97
-0.90
-1.10
-1.33
-1.23
-1.50
-1.53 -1.43 -1.13
15848.93
-0.90
-0.90
-0.97
-1.03
-1.27
-1.13
-1.30
-1.60
-1.37
-1.57
-1.37 -1.40 -1.17
16788.04
-0.90
-1.07
-1.00
-1.30
-1.33
-1.47
-1.50
-1.53
-1.40
-1.70
-1.77 -1.43 -1.43
17782.79
-0.87
-0.93
-0.93
-1.10
-1.33
-1.53
-1.70
-1.57
-1.67
-1.73
-2.30 -2.00 -1.70
18836.49
-0.90
-1.10
-0.90
-1.10
-1.43
-1.43
-1.70
-1.83
-1.80
-1.83
-2.13 -2.27 -1.77
19952.62
-1.27
-1.30
-1.13
-1.47
-1.73
-1.67
-2.07
-2.30
-1.97
-2.23
-2.13 -1.97 -1.67
1. The corrections which should be subtracted from the measured data when using the Larson-Davis Model
WS001 3
½
-inch diameter windscreen with a
½
-inch Larson-Davis microphone are as indicated in the follow
-
ing table
Test
Sound Level Meter Filter
EPS 2116 Correction
(See Table A.2)
Free Field Response
FF:FF 2116
Free Field to Free Field EPS2116
Correction Factor
Table B.2 Directional Response of 3 ½-inch Windscreen
