
CHAPTER 4
Specifications
33
Fig.4.19 Sensitivity variations of Microphone Type 4189 only, with Windscreen UA 1650 fitted, at sound incidence
angles within
±
θ
°
from the reference direction, see Table A.33. Reduced IEC 61672–1 limits are also
drawn on the graph.
± 150°
0
5
10
15
20
dB
100 1000 10000
Hz
± 90°
0
5
10
15
20
dB
100 1000 10000
Hz
± 30°
0
5
10
15
20
dB
100 1000 10000
Hz
040185
BE171211.book Page 33 Thursday, May 27, 2004 1:01 PM
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