How much energy is necessary to generate a certain sound pressure in the ear canal? The kinetic energy of a slow-flying fruit fly is sufficient for this!
In an in-ear device, a big part of the energy budget is consumed by sound generation. To further develop hearables, electrostatic microelectromechanical transducers offer the optimal solution for creating sound.
Hearables are inconspicuous in size, yet they will have a major impact on our lives. What functionalities will these smart earphones bring to enhance our day-to-day interaction?
Smart hearables require small micro speakers. We reveal the secret how sound can be created with tiny air chambers inside a 10 mm² MEMS chip.