Chapter 4 — Free-field
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2
" Microphone Type 4190
Effect of Temperature
Falcon™ Range of Microphone Products
Microphone Handbook
Brüel & Kjær
4
−
24
Fig.4.23 Typical variation in actuator response (normalized at
250Hz) as a function of temperature, relative to the re-
sponse at 20°C (see Fig.4.4) over the temperature range
defined by IEC651
Fig.4.24 Typical variation in actuator response (normalized at
250Hz) as a function of temperature, relative to the re-
sponse at 20°C (see Fig.4.4)
940774e
Frequency (Hz)1 k 10 k 50 k
1.0
Response (dB)
– 1.5
– 1.0
– 0.5
0.0
0.5
500 Hz
1.5
+ 50 °C
– 10 °C
1
– 1
– 2
2
0
940596e
50 k1 k
3
4
10 k500
300° C
200° C
100° C
Response (dB)
Frequency (Hz)
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