Bone microphones

Technology 

Noliac's piezoelectric vibration bone microphone type LD is designed for single-axis vibration measurement.

Measured value is acceleration in base axis direction. The sensor is designed for measurement of acoustically invoked vibrations in communication frequency band of audible spectrum. The shape is custom tailored for using as a sensor in osteo-communication system.

Frequency characteristic of LD173C sensor

Sensor schematic

Recommended connection, testing curcuit

DC output characteristic