Chapter 4 — Free-field
1
/
2
" Microphone Type 4190
Effect of Temperature
Falcon™ Range of Microphone Products
Microphone Handbook
BE1376– 12
4
−
23
The reversible changes are shown in Fig.4.22 as a change in sensitivity and in
Fig.4.23 to Fig.4.25 as changes in the frequency response normalized at 250Hz.
Temperature Coefficient (250Hz):
–0.007dB/°C, typical (for the range –10 to +50°C)
Fig.4.22 Typical variation in sensitivity (at 250Hz) as a function
of temperature, relative to the sensitivity at 20°C
940875e
– 2.0
– 1.5
– 1.0
– 0.5
0.0
0.5
– 50 0 50 100 150 200 250 300
Temperature (°C)
– 2.5
Response (dB)
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