公开(公告)号：WO1996001547A2

公开(公告)日：1996-01-18

申请号：PCT/US1995008131

申请日：1995-06-29

Applicant: NOISE CANCELLATION TECHNOLOGIES, INC.

Inventor： NOISE CANCELLATION TECHNOLOGIES, INC. ,  CONLEY, John, K. ,  KOKONASKI, William ,  PARRELLA, Michael, J. ,  MACHACEK, Steven, L.

IPC: H04R17/00

CPC classification number: G06F1/1616 ,  G06F1/1632 ,  G06F1/1688 ,  H04R7/04 ,  H04R17/00

Abstract: This application outlines several applications of a piezoelectric materials invention to produce quality loudspeakers in applications where coil driven dynamic speakers are difficult or impossible to implement with an appreciable degree of sound quality. This invention includes a series of modifications to a laptop computer such as the IBM 750c. The modifications to the computer consist of placing piezoelectric patches behind the LCD and directly to the back wall of the laptop lid. Damping materials and stiffeners are also added to the back wall to reduce structural resonance. A system consisting of an audio amplifier and transformer is used to drive the piezo speaker.

Abstract translation: 该应用概述了压电材料发明的几个应用，以在线圈驱动的动态扬声器难以或不可能以可观的音质程度实现的应用中产生优质扬声器。 本发明包括对诸如IBM 750c之类的膝上型计算机的一系列修改。 对计算机的修改包括将LCD上的压电贴片放置在笔记本电脑盖子的后壁上。 阻尼材料和扶强材也被添加到后壁以减少结构共振。 由音频放大器和变压器组成的系统用于驱动压电扬声器。

公开(公告)号：EP0772953A2

公开(公告)日：1997-05-14

申请号：EP95924733.0

申请日：1995-06-29

Applicant: NOISE CANCELLATION TECHNOLOGIES, INC.

Inventor： CONLEY, John, K. ,  KOKONASKI, William ,  PARRELLA, Michael, J. ,  MACHACEK, Steven, L.

IPC: G06F1 ,  H04R17 ,  H04R7

CPC classification number: G06F1/1616 ,  G06F1/1632 ,  G06F1/1688 ,  H04R7/04 ,  H04R17/00

Abstract: The modifications to the computer consist of placing piezoelectric patches behind the LCD and directly to the back wall of the laptop lid. Damping materials and stiffeners are also added to the back wall to reduce structural resonance. A system consisting of an audio amplifier (5) and transformer (6) is used to drive the piezo speaker (7).