Invention Grant
- Patent Title: Microelectromechanical loudspeaker array with predetermined period of time of diaphragm relaxation
- Patent Title (中): 微电子扬声器阵列,具有预定的隔膜松弛时间
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Application No.: US13650524Application Date: 2012-10-12
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Publication No.: US08761418B2Publication Date: 2014-06-24
- Inventor: Ando Feyh , Stefan Zimmermann
- Applicant: Robert Bosch GmbH
- Applicant Address: DE Stuttgart
- Assignee: Robert Bosch GmbH
- Current Assignee: Robert Bosch GmbH
- Current Assignee Address: DE Stuttgart
- Agency: Maginot, Moore & Beck
- Priority: DE102011084541 20111014
- Main IPC: H04R9/06
- IPC: H04R9/06

Abstract:
A microelectromechanical loudspeaker array includes a plurality of microelectromechanical loudspeaker elements each having a diaphragm element configured to be deflected from a neutral position into at least one deflection position to produce a sound pulse. The array further includes an actuation device which is configured to put the diaphragm element into the at least one deflection position from the neutral position on the basis of drive signals. The array further includes a control device coupled to the plurality of loudspeaker elements. The control device is configured to send, in each case at a driving time, (i) a first drive signal configured to produce a sound pulse by actuating the diaphragm element, and (ii) a respective second drive signal configured to relax the diaphragm element into the neutral position during a predetermined period of time after the driving time to the actuation device of at least one of the loudspeaker elements.
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