Bone conduction (BC) communication systems

For military applications, bone conduction communication systems are preferred to keep the ears free and unobstructed for hearing other sounds and maintaining situational awareness. In addition, it is often times preferred for stealth operations and noisy environments. CFDRC has developed and validated anatomy- and physics- based modeling tools for analysis and design of cranial bone conduction (BC) communication systems. The modeling tools are used to optimize the design, attachment, and anatomical location of BC speakers and microphones for best communication clarity in various military environments. CFDRC’s high-fidelity Fluid-Structures-Interaction software is used to model the filtering effects of the skull, brain, fluids, and other tissues as vibrations ‘travel’ from various locations on the head surface to the cochlea. Resulting transfer functions are used to predict speech intelligibility and improve future generation of BC devices.

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