Ultrasound Microphones for the
Avisoft-Bioacoustics UltraSoundGate Devices
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| The modular device concept
of the UltraSoundGate system makes it possible to use various
exchangeable ultrasonic microphones. Choose the model that is most
appropriate for your specific application.
| |
| Microphone principle
|
pre-polarized
condenser
(electret) |
externally polarized condenser
(200V) |
Microphone model
|
Knowles
FG Series |
Knowles
SPM Series |
EP3 |
UltraSoundGate
CM16/CMPA |
Polaroid/CMPA |
| Relative flatness of
the frequency response |
poor |
poor |
poor |
good |
poor |
| Frequency range [kHz] |
10-120 |
10-110 |
10-150 |
10-250 |
10-150 |
| Relative sensitivity at 50 kHz |
medium |
high |
medium |
high |
high |
| Approximate self-noise level 20 ...
60 kHz [dB] |
35 |
30 |
32 |
28 |
25 |
| Directionality |
low |
low |
low |
medium |
high |
| Reliability in high-humidity environments |
very good |
poor |
very good |
good |
good |
| Total size [mm] |
19 x 19 x 47 |
36 x 36 x
60
(including CMPA) |
50 x 50 x
60
(including CMPA) |
| Weight [g] |
40 |
65
(including CMPA) |
75
(including CMPA) |
| Power requirements
|
5V, 6 mA |
5V, 14
mA
(P48 version : 48V, 10 mA) |
| Compatibile to |
UltraSoundGate xx16x |
| Part # |
40001 |
40003 |
40005 |
40011 |
40016 |
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Relative signal-to-noise ratios of different microphones (sound source located exactly on-axis). Note that the s/n ratio will be degraded if the sound source is located off-axis. The off-axis attenuation will depend on the physical size of the diaphragm and the signal frequency. So, the largest model Avisoft Polaroid/CMPA is the most directional one.
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| See Ultrasound Microphones P48 for details on the phantom-powered microphone models that can be used with common CF-card recorders or computer audio interfaces. |
| See the CM16/CMPA microphone page for details on the avilable options for connecting the condenser microphone to other recording hardware (including National Instruments devices). |
| Return to UltraSoundGate Home |
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