Chapter 6 — Pressure-field
1
/
2
" Microphone Type 4192
Frequency Response
Falcon™ Range of Microphone Products
Microphone Handbook
Brüel & Kjær
6
−
8
If the polarization voltage is positive (as it is with Brüel&Kjær instruments), the
output voltage is negative for a positive pressure applied to the diaphragm.
6.3.4 Low-frequency Response
The low-frequency response (see Fig.6.3) is the typical response with the vent ex-
posed to the sound field. If the vent is not exposed to the sound field, the sensitivity
increases from 0dB at the reference frequency (251.2Hz) to approximately 0.2dB at
1Hz.
Fig.6.4 Typical actuator response measured with Electrostatic Actuator UA0033
Fig.6.5 Typical actuator phase response measured with Electrostatic Actuator UA0033
940674/1e
– 5
5
0
– 10
– 15
– 20
1 k 10 k 100 k100
Frequency (Hz)
Response (dB)
940675/1e
– 90
0
– 45
– 135
– 180
1 k 10 k 100 k100
Frequency (Hz)
Response (Degrees)
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