Arioso Systems is a Dresden-based mems loudspeaker spin-out from Fraunhofer-IPMS, which recently closed a venture capital seed round. It is aiming its silicon loudspeakers at ear buds. They are made by a combination of machining and stacking silicon-on-insulator wafers using a CMOS-compatible process. How do they work? Electronics Weekly got in touch with Arioso to find out. ...

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