10-06-2021 дата публикации
Номер: US20210174778A1
An aural iris includes a lumen and an actuator coupled on or in or to the lumen for at least partially attenuating sound traversing through the lumen by selectively actuating the actuator on and off. Other embodiments are disclosed. 1. An aural iris system , comprising:a lumen; anda micro electro mechanical system (MEMS) actuator coupled on or in or to the lumen for at least partially attenuating sound traversing through the lumen by selectively actuating the MEMS actuator on and off2. The aural iris system of claim 1 , wherein the MEMS actuator is one of a piezoelectric micro-actuator or an electrostatic micro-actuator.3. The aural iris system of claim 1 , wherein the MEMS actuator is one of a magnetostrictive actuator claim 1 , piezoelectric actuator claim 1 , electromagnetic actuator claim 1 , electoactive polymer actuator claim 1 , pneumatic actuator claim 1 , hydraulic actuator claim 1 , thermal biomorph actuator claim 1 , state change actuator claim 1 , shape memory alloy or SMA actuator claim 1 , parallel plate actuator claim 1 , piezoelectric biomorph actuator claim 1 , electrostatic relay actuator claim 1 , curved electrode actuator claim 1 , repulsive force actuator claim 1 , solid expansion actuator claim 1 , comb drive actuator claim 1 , magnetic relay actuator claim 1 , piezoelectric expansion actuator claim 1 , external field actuator claim 1 , thermal relay actuator claim 1 , topology optimized actuator claim 1 , S-shaped actuator claim 1 , distributed actuator claim 1 , inchworm actuator claim 1 , fluid expansion actuator claim 1 , scratch drive actuator claim 1 , micro-actuator claim 1 , micro-actuator end effector claim 1 , or impact actuator.4. The aural iris system of claim 1 , wherein the lumen includes a first open end and a second open end and wherein the MEMS actuator is placed at the first open end or wherein the MEMS actuator is placed at the second open end or wherein the MEMS actuator is place at both the first open end and the second ...
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