Bosch is expanding its expertise in MEMS (micro-electro-mechanical systems) micro speakers and strengthening its market position as leading provider of sensing solutions for consumer electronics with its acquisition of Arioso Systems.

The internet of tomorrow will be mobile- and audio-based, both speaking and listening. Components for smart in-ear devices must be increasingly small, light, efficient, and scalable to meet the market’s needs. More and more functionalities demand for smaller form factors and expanded battery run time.

Arioso Systems has developed a novel audio transducer technology whereby sound is generated through movement of vertically oriented lamellas inside a silicon chip. Unlike conventional membrane technologies, Arioso Systems technology uses the chip volume rather than surface. Therefore, it is possible to build a miniatured MEMS micro-speaker to generate up to 120 dB SPL (sound pressure level) out of 10mm2 active area. Thanks to the electrostatic actuator of all-silicon MEMS, and thanks to its very low capacitance, the Arioso Systems technology allows battery savings for new sensor applications in demanding hearable devices such as TWS as well as in other wearables devices.

The unique and innovative technology concept from Arioso Systems—combined with the long-lasting experience from Bosch Sensortec to develop a technology to high-volume consumer electronics market maturity—is expected to shape the emerging global MEMS micro speaker market.