Accelerometers
- Voice intelligibility in a noisy environment
- Convenience of wearing (when integrated onto another worn article such as a helmet)
- Unobtrusive compared to a close talking boom microphone
- Waterproof and heat resistant
The BU Series piezo-ceramic accelerometer has output from 20 Hz to above 10 kHz, and is used primarily as a contact microphone for high noise environments. It may also be used as an accelerometer with lightweight structures.
As a contact microphone, the BU may be worn on the throat, or touching a bony part of the head (top, temple, or mastoid bone). BU has been integrated into helmet designs for radio communication for military and emergency services.
| Model Id | Dimensions | 1 kHz sensitivity | Port Location | Response | Directional | Peak Frequency | Noise Max (Input Ref.) | Noise Max (Output Noise) |
|---|---|---|---|---|---|---|---|---|
| BU-21771-000 | 7.92mm x 5.59mm x 4.14mm (.312in x .220in x .163in) | -45 | n/a | n/a | -103 dB | |||
| BU-23173-000 | 7.92mm x 5.59mm x 4.14mm (.312in x .220in x .163in) | -39 | n/a | n/a | -103 dB | |||
| BU-23842-000 | 7.92mm x 5.59mm x 2.28mm (.312in x .220in x .090in) | -40 | n/a | n/a | -103 dB | |||
| BU-27135-000 | 7.92mm x 5.59mm x 2.28mm (.312in x .220in x .090in) | -45 | n/a | n/a | -103 dB |