公开(公告)号：US11843915B2

公开(公告)日：2023-12-12

申请号：US17508133

申请日：2021-10-22

Applicant: Massachusetts Institute of Technology

Inventor： Jinchi Han ,  Jeffrey H. Lang ,  Vladimir Bulovic

IPC: H04R17/02 ,  H04R1/40 ,  H04R7/12 ,  H04R3/00 ,  H10N30/084 ,  H10N30/88

CPC classification number: H04R17/025 ,  H04R1/403 ,  H04R1/406 ,  H04R3/005 ,  H04R7/127 ,  H10N30/084 ,  H10N30/883 ,  H04R2400/01

Abstract: An active acoustic system includes a thin-film sheet having an array of piezoelectric microstructures embossed in the film. Each piezoelectric microstructure may act as a speaker and/or a microphone. A control circuit is configured to individually address the piezoelectric microstructures to provide a separate voltage signal to, or receive a separate voltage signal from, each piezoelectric microstructure.