D-0133833-A – 2022/09
AD629 - Instructions for Use - EN
Page 56
Free field
ANSI S3.6-2010
Free Field max SPL
ISO 389-7 2005
Free Field max HL is found by subtracting the selected RETSPL value
Binaural
Binaural to
Monaural
Free Field Line
0°
45°
90°
correction
Tone
NB
Frequency
RETSPL
RETSPL
RETSPL
RETSPL
Max SPL
Max SPL
Hz
dB
dB
dB
dB
dB
dB
125
22
21.5
21
2
102
97
160
18
17
16.5
2
98
93
200
14.5
13.5
13
2
104.5
99.5
250
11.5
10.5
9.5
2
106.5
101.5
315
8.5
7
6
2
103.5
98.5
400
6
3.5
2.5
2
106
101
500
4.5
1.5
0
2
104.5
99.5
630
3
-0.5
-2
2
103
98
750
2.5
-1
-2.5
2
102.5
97.5
800
2
-1.5
-3
2
107
102
1000
2.5
-1.5
-3
2
102.5
97.5
1250
3.5
-0.5
-2.5
2
103.5
98.5
1500
2.5
-1
-2.5
2
102.5
97.5
1600
1.5
-2
-3
2
106.5
101.5
2000
-1.5
-4.5
-3.5
2
103.5
98.5
2500
-4
-7.5
-6
2
101
96
3000
-6
-11
-8.5
2
104
94
3150
-6
-11
-8
2
104
94
4000
-5.5
-9.5
-5
2
104.5
99.5
5000
-1.5
-7.5
-5.5
2
108.5
98.5
6000
4.5
-3
-5
2
104.5
99.5
6300
6
-1.5
-4
2
106
96
8000
12.5
7
4
2
92.5
87.5
WhiteNoise
0
-4
-5.5
2
100
ANSI free field
ANSI S3.6-2010
Free Field max SPL
Free Field max HL is found by subtracting the selected RETSPL value
Binaural
Binaural
to
Monaural
Free Field Line
0°
45°
90°
135°
180°
correction
0° - 45° - 90°
RETSPL RETSPL RETSPL RETSPL RETSPL RETSPL
Max SPL
Speech
15
11
9.5
10
13
2
100
Speech Noise
15
11
9.5
10
13
2
100
Speech WN
17.5
13.5
12
12.5
15.5
2
97.5
IEC free field
ISO 389-7 2005
Free Field max SPL
Free Field max HL is found by subtracting the selected RETSPL value
Binaural
Binaural
to
Monaural
Free Field Line
0°
45°
90°
135°
180°
correction
0° - 45° - 90°
RETSPL RETSPL RETSPL RETSPL RETSPL RETSPL
Max SPL
Speech
0
-4
-5.5
-5
-2
2
100
Speech Noise
0
-4
-5.5
-5
-2
2
100
Speech WN
2.5
-1.5
-3
-2.5
0.5
2
97.5