公开(公告)号：WO1998013942A1

公开(公告)日：1998-04-02

申请号：PCT/US1997017231

申请日：1997-09-25

Applicant: NOISE CANCELLATION TECHNOLOGIES, INC.

Inventor： NOISE CANCELLATION TECHNOLOGIES, INC. ,  WARNAKA, Glenn, E. ,  WARNAKA, Mark, E. ,  PARRELLA, Michael, J.

IPC: H04B01/00

CPC classification number: H04R7/045 ,  B60R11/0223 ,  B60R13/00 ,  B60R2011/0028 ,  B60R2011/0043 ,  H04R5/02 ,  H04R2499/13

Abstract: An improved loudspeaker system for a passenger vehicle such as an automobile is disclosed. The system comprises a transducer (112) capable of being excited by applied electric potential and electronic means that is electrically connected to the transducer (112) to apply electric potential thereto. It is a feature of the present invention that the diaphragm driven by the excited transducer (112) is comprised of the headliner (111) of the vehicle.

Abstract translation: 公开了一种用于乘用车例如汽车的改进的扬声器系统。 该系统包括能够被施加的电位激励的换能器（112）和电连接到换能器（112）以向其施加电位的电子装置。 本发明的特征在于，由激励的换能器（112）驱动的隔膜由车辆的顶篷（111）组成。

公开(公告)号：WO1997017818A1

公开(公告)日：1997-05-15

申请号：PCT/US1996015323

申请日：1996-09-25

Applicant: NOISE CANCELLATION TECHNOLOGIES, INC.

Inventor： NOISE CANCELLATION TECHNOLOGIES, INC. ,  EATWELL, Graham, P. ,  PARRELLA, Michael, J. ,  MACHACEK, Steven, L.

IPC: H04R25/00

CPC classification number: H04R17/00 ,  H04R7/04

Abstract: This invention outlines several applications of piezoelectric vibrators (4) to produce quality flat panel speakers in passenger cabin applications. A system consisting of an audio amplifier (2) and transformer (3) is used to drive the piezo speaker (4). The electronics are packaged (8) so that they fit in small modules that can be attached to a cabin structure to produce a speaker. The invention includes a variety of flat panel speaker designs, including one in which the existing structure is converted into a speaker, and thin membrane and/or panels that are fitted with piezoelectric elements (Figures 5 and 6). A system consisting of cabin quieting and flat panel speakers is also discussed where the mid and high frequency audio is produced by panel speakers (74-79) and the low frequency audio is produced from dynamic loudspeakers (80-84). The cabin systems discussed in this patent are applicable to automobiles, aircraft, trucks and buses.

Abstract translation: 本发明概述了压电振动器（4）的几种应用，以在客舱应用中产生优质的平板扬声器。 由音频放大器（2）和变压器（3）组成的系统用于驱动压电扬声器（4）。 电子设备被封装（8），使得它们适合于可以连接到机舱结构以产生扬声器的小模块中。 本发明包括各种平板扬声器设计，其中包括将现有结构转换成扬声器的设计，以及配有压电元件的薄膜和/或面板（图5和图6）。 还讨论了由面板扬声器（74-79）产生的中高频音频和低频音频由动态扬声器（80-84）产生的由机舱和平板扬声器组成的系统。 本专利中讨论的客舱系统适用于汽车，飞机，卡车和公共汽车。

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：EP0872157A1

公开(公告)日：1998-10-21

申请号：EP96933882.0

申请日：1996-09-25

Applicant: NOISE CANCELLATION TECHNOLOGIES, INC.

Inventor： EATWELL, Graham, P. ,  PARRELLA, Michael, J. ,  MACHACEK, Steven, L.

IPC: H04R7 ,  H04R17

CPC classification number: H04R17/00 ,  H04R7/04

Abstract: This invention outlines several applications of piezoelectric vibrators (4) to produce quality flat panel speakers in passenger cabin applications. A system consisting of an audio amplifier (2) and transformer (3) is used to drive the piezo speaker (4). The electronics are packaged (8) so that they fit in small modules that can be attached to a cabin structure to produce a speaker. The invention includes a variety of flat panel speaker designs, including one in which the existing structure is converted into a speaker, and thin membrane and/or panels that are fitted with piezoelectric elements (Figures 5 and 6). A system consisting of cabin quieting and flat panel speakers is also discussed where the mid and high frequency audio is produced by panel speakers (74-79) and the low frequency audio is produced from dynamic loudspeakers (80-84). The cabin systems discussed in this patent are applicable to automobiles, aircraft, trucks and buses.

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).