Piezoelectric bone conduction sensor targets earbuds

April 20, 2021 // By Peter Clarke
Piezoelectric bone conduction sensor targets earbuds
Vesper Technologies Inc. (Boston, Mass.) has introduced the VA1200 piezoelectric MEMS-based bone conduction microphone or voice accelerator.

The part is intended to reduce design complexity for small earbuds and True Wireless Stereo (TWS) systems.

The VA1200 within an earbud can be used to pick up the wearer's voice through bone conduction. Using the VA1200 voice accelerometer in conjunction with a standard microphone, the application can achieve superior background and wind noise reduction. The component is Vesper's first foray away from ambient air microphones and comes in a package measuring 2.90mm by 2.76mm by 0.9mm.

Existing earbuds rely heavily on mic arrays and algorithms to suppress environmental noise during voice calls but the VA1200 solves this problem at a lower price point , according to Roberto Condorelli, senior director of marketing at Vesper.

The VA1200 represents a move towards AR/VR headsets. Vesper said it already has customers who plan to roll out products using the VA1200 in 2021.

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