公开(公告)号：WO1994018923A1

公开(公告)日：1994-09-01

申请号：PCT/US1994001189

申请日：1994-02-08

Applicant: NOISE CANCELLATION TECHNOLOGIES, INC.

Inventor： NOISE CANCELLATION TECHNOLOGIES, INC. ,  SMITH, Dexter, G. ,  MENDAT, Deborah, P. ,  MC LOUGHLIN, Michael, P. ,  GRAHAM, Steven

IPC: A61F11/06

CPC classification number: G10K11/178 ,  G10K2210/103 ,  G10K2210/109 ,  G10K2210/112 ,  G10K2210/3045 ,  G10K2210/509 ,  G10K2210/512

Abstract: A noise canceling system which utilizes an adaptive feedforward algorithm and inputs from microphones (12, 15) to model the system and provide an output signal to a speaker (14) in a relatively short duct (11, 33) to provide volumetric attenuation and a global canceling effect.

Abstract translation: 一种噪声消除系统，其利用自适应前馈算法和来自麦克风（12,15）的输入来对系统进行建模并在相对短的导管（11,33）中向扬声器（14）提供输出信号以提供体积衰减和 全局取消效果。

公开(公告)号：EP0615648B1

公开(公告)日：1999-04-21

申请号：EP92905531.7

申请日：1991-12-02

Applicant: NOISE CANCELLATION TECHNOLOGIES, INC.

Inventor： MC LOUGHLIN, Michael, P. ,  EGHTESADI, Khoscrow ,  SMITH, Dexter ,  ZIEGLER, Eldon, W., Jr.

IPC: G10K11/16

CPC classification number: G10K11/178 ,  G10K2210/1054 ,  G10K2210/106 ,  G10K2210/3216

Abstract: An active noise (''NOISE SOURCE'') control system for an enclosure having at least two transducers (''SECOND SOURCES'') and multiple channels in which there is interaction between the channels provides for attenuation of the desired regions within the enclosure.

公开(公告)号：EP0615648A1

公开(公告)日：1994-09-21

申请号：EP92905531.0

申请日：1991-12-02

Applicant: NOISE CANCELLATION TECHNOLOGIES, INC.

Inventor： MC LOUGHLIN, Michael, P. ,  EGHTESADI, Khoscrow ,  SMITH, Dexter ,  ZIEGLER, Eldon, W., Jr.

IPC: G10K11

CPC classification number: G10K11/178 ,  G10K2210/1054 ,  G10K2210/106 ,  G10K2210/3216

Abstract: An active noise (''NOISE SOURCE'') control system for an enclosure having at least two transducers (''SECOND SOURCES'') and multiple channels in which there is interaction between the channels provides for attenuation of the desired regions within the enclosure.