BRUEL & KJAER 4188 - Page 85

Chapter 4 — Free-field
1
/
2
" Microphone Type 4190
Frequency Response
Falcon™ Range of Microphone Products
Microphone Handbook
Brüel & Kjær
4
−
10
Fig.4.7 Typical free-field response (0° incidence) for the microphone with Protection Grid DB3420
Fig.4.8 Free-field correction curves for the microphone without
protection grid
940888e
– 5
5
0
– 10
– 15
– 20
1 k 10 k 100 k100
Frequency (Hz)
Response (dB)
940801/1e
500 1k 10k 50kFrequency (Hz)
– 5
– 2.5
2.5
5
7.5
10
15
– 10
– 7.5
0
Correction (dB)
12.5
0°
30°
60°
Random
90°
180°
120°
150°
θ°