A SERVICE OF

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6 | e 835 fx
the interfering sound source is located in the angle area of
the highest cancellation of the microphone (approx. 180°;
see polar diagram).
Polar diagram
5
10
15
20
25
dB
30°
60°
90°
30°
60°
90°
120°
150°
180°
150°
120°
2000 Hz
4000 Hz
8000 Hz
16000 Hz
125 Hz
250 Hz
500 Hz
1000 Hz
0