SoundAdvisor Model 831C
A-24
FIGURE A-19
Model 831 with 377C20 Microphone
FIGURE A-20
Model 831 with 377C20 Microphone
-26
-22
-18
-14
-10
-6
-2
2
0°
10°
20°
30°
40°
50°
60°
70°
80°
90°
100°
110°
120°
130°
140°
150°
160°
170°
180°
190°
200°
210°
220°
230°
240°
250°
260°
270°
280°
290°
300°
310°
320°
330°
340°
350°
281.84
354.81
446.68
562.34
707.95
891.25
1122.02
1412.54
1778.28
2238.72
2818.38
3548.13
4466.84
5623.41
7079.46
8912.51
11220.18
Frequency
(Hz)
-26
-22
-18
-14
-10
-6
-2
2
0°
10°
20°
30°
40°
50°
60°
70°
80°
90°
100°
110°
120°
130°
140°
150°
160°
170°
180°
190°
200°
210°
220°
230°
240°
250°
260°
270°
280°
290°
300°
310°
320°
330°
340°
350°
266.07
334.97
421.7
530.88
668.34
841.4
1059.25
1333.52
1678.8
2113.49
2660.73
3349.65
4216.97
5308.84
6683.44
8413.95
10592.54
13335.21
16788.04
Frequency
(Hz)
