BRUEL & KJAER 4188 - Page 142

Chapter 6 — Pressure-field
1
/
2
" Microphone Type 4192
Frequency Response
Falcon™ Range of Microphone Products
Microphone Handbook
BE1378– 12
6
−
7
All frequency responses and correction curves are shown with a frequency resolu-
tion of
1
/
12
-octave.
6.3.2 Optimized Response (Pressure-field Response)
The frequency response of Pressure-field
1
/
2
" Microphone Type 4192 meets the re-
quirements of ANSI S1.4 -1983, Type 1 and ANSI S1.12, Type M.
6.3.3 Actuator Response
The microphone’s frequency response is determined by adding corrections for the
type of sound field to its actuator response obtained using Electrostatic Actuator
UA0033. This is a reproducible and practical method for calibrating a microphone’s
frequency response.
Fig.6.3 Typical pressure-field response of the microphone with Protection Grid DB3421 and the
microphone’s specified tolerances. The low-frequency response is valid when the vent is ex-
posed to the sound field
5
0
– 5
– 10
1 10 100 1k 10 k
Frequency (Hz)
100 k
940863/1e
Tol.
Tol.
Tol.
Tol.
Response (dB)