US20160324478A1_page_40

US20160324478A1 | page 40 | https://thedailydialectics.com/pdfs/wipow/US20160324478A1/US20160324478A1.pdf

US 2016/0324478 Al 97L. An electro active polymer (EAP) valve 97 can serve as acontrolling mechanism that controls the amount of ambient sound can traverse the module 80. In this regard, the EAP valve 97 serves as an “aural iris” that opens and closes the ambient environment from the otherwise…