1kHz
Tempera-
ture
-20°C 6,92
0°C 6,83
10°C 6,71
20°C 6,62
35°C 6,60
45°C 6,57
55°C 6,50
The range for the measurement was
set at -20° to 65° C which is more than
iSEMcon microphones are normally
used at. The most important tempera-
tures are 10 °C up to about 55°C
which covers indoor as well as open air
use. It will give you a good predictable
performance whether it is used in a
cold autumn night or if the hot summer
sun “burns” the microphone body.
The table below shows the microphone
sensitivity change @ 1kHz. The diagram
on previous page shows how tempera-
ture affects the frequency response
behavior of an EMX-7150 microphone.
The microphone capsule itself is the
part being responsible for most of the
temperature change. (see also: Tem-
perature characteristics of electret con-
denser microphones Acoust. Sci. &
Tech. 27, 4 (2006))
Microphone sensitivity vs. Temperature
typical
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