
CHAPTER 4
Specifications
27
Fig.4.13 Directional response for Microphone Type 4189 only. See Table A.10 to Table A.12.
-25
-20
-15
-10
-5
0
5
dB
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
d)
-25
-20
-15
-10
-5
0
5
dB
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
a: 630 Hz, b: 1600 Hz, c: 4000 Hz, d: 10000 Hz
a: 800 Hz, b: 2000 Hz, c: 5000 Hz, d: 12500 Hz
a: 1000 Hz, b: 2500 Hz, c: 6300 Hz, d: 16000 Hz
a: 1250 Hz, b: 3150 Hz, c: 8000 Hz, d: 20000 Hz
c)
-25
-20
-15
-10
-5
0
5
dB
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
b)
-25
-20
-15
-10
-5
0
5
dB
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
a)
040176
BE171211.book Page 27 Thursday, May 27, 2004 1:01 PM
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