SMX-US Microphone
3
Song Meter SM2BAT
Copyright © 2009-2011
windscreen and instead implement your own weather protection to protect
the membrane from wind-blown rain. Again, we recommend that you aim
the microphone horizontally or downward (not upward) to reduce the risk
of damage should weatherproofing fail.
Directionality and Frequency Response
The SMX-US is an omnidirectional microphone and is therefore ideally
suited to unattended monitoring in which the precise direction of bat
activity may not be known in advance. The following graph illustrates the
typical pick-up pattern:
SMX-US Directionality
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0
15
30
45
60
75
90
105
120
135
150
165
180
195
210
225
240
255
270
285
300
315
330
345
40khz
80kHz
120kHz
