BRUEL & KJAER 4184-A, Техническая документация инструкция, Страница: 17 / 52

CHAPTER 4
Specifications
11
Fig.4.17 Directional response for Weatherproof Microphone Unit Type 4184-A with the Microphone Preamplifier
connected to a microphone extension cable. Corresponds to Table A.31 to Table A.33. The sound incidence
angles are for 4184-A 0
° (Top)’s reference direction. For 4184-A 90 ° (Side), subtract 90 ° from the angles in
the plots to get the sound incidence angle
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
-25
-20
-15
-10
-5
0
5
dB
d) 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
-25
-20
-15
-10
-5
0
5
dB
c)
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
-25
-20
-15
-10
-5
0
5
dB
b) 0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
-25
-20
-15
-10
-5
0
5
dB
a)
0°
270°
90°
110110