公开(公告)号：WO1995030393A1

公开(公告)日：1995-11-16

申请号：PCT/US1995005721

申请日：1995-05-09

Applicant: NOISE CANCELLATION TECHNOLOGIES, INC.

Inventor： NOISE CANCELLATION TECHNOLOGIES, INC. ,  MILLER, Scott ,  SHIPPS, J., Clay

IPC: A61F11/06

CPC classification number: F01N1/023 ,  F01N1/065 ,  G10K11/178 ,  G10K2210/1053 ,  G10K2210/111 ,  G10K2210/112 ,  G10K2210/12822 ,  G10K2210/3026 ,  G10K2210/3216 ,  G10K2210/3219 ,  G10K2210/3224 ,  G10K2210/32272

Abstract: An active muffle noise cancellation system having an active controller (60), a speaker housing (41) with acoustic compliance spaces, a duct extension means (42, 43) in communication with said speaker housing and adapted to conform a dipole radiation pattern into a plane wave which can be measured by a microphone means (46).

Abstract translation: 一种主动式马弗噪声消除系统，其具有主动控制器（60），具有声学符合空间的扬声器壳体（41），与所述扬声器壳体连通并适于将偶极辐射图符合为 可以由麦克风装置（46）测量的平面波。

公开(公告)号：WO1994022403A1

公开(公告)日：1994-10-13

申请号：PCT/US1993002596

申请日：1993-03-29

Applicant: NOISE CANCELLATION TECHNOLOGIES, INC.

Inventor： NOISE CANCELLATION TECHNOLOGIES, INC. ,  MILLER, Scott ,  SHIPPS, J., Clay

IPC: A61F11/06

CPC classification number: F01N1/065 ,  G10K11/178 ,  G10K2210/12822 ,  G10K2210/3026 ,  G10K2210/3214 ,  G10K2210/3216 ,  G10K2210/3224 ,  G10K2210/32272

Abstract: An active noise cancellation system for mufflers having an anti-noise source (2) connected to an outlet pipe (3) that terminates adjacent the end of a tailpipe (1) in the same plane or at an acute angle thereto.

Abstract translation: 一种用于消声器的主动噪声消除系统，其具有连接到出口管（3）的抗噪声源（2），该出口管（3）在相同的平面或与其成锐角相邻的尾管（1）的端部附近终止。

公开(公告)号：EP0828466A1

公开(公告)日：1998-03-18

申请号：EP95918421.0

申请日：1995-05-09

Applicant: NOISE CANCELLATION TECHNOLOGIES, INC.

Inventor： MILLER, Scott ,  SHIPPS, J., Clay

IPC: F01N1 ,  G10K11

CPC classification number: F01N1/023 ,  F01N1/065 ,  G10K11/178 ,  G10K2210/1053 ,  G10K2210/111 ,  G10K2210/112 ,  G10K2210/12822 ,  G10K2210/3026 ,  G10K2210/3216 ,  G10K2210/3219 ,  G10K2210/3224 ,  G10K2210/32272

Abstract: An active muffle noise cancellation system having an active controller (60), a speaker housing (41) with acoustic compliance spaces, a duct extension means (42, 43) in communication with said speaker housing and adapted to conform a dipole radiation pattern into a plane wave which can be measured by a microphone means (46).

Abstract translation: 一种有源马弗噪声消除系统，具有一个主动控制器（60），一个具有声学柔性空间的扬声器外壳（41），一个与所述扬声器外壳连通并适于使偶极辐射图形符合 该平面波可以由麦克风装置（46）测量。