公开(公告)号：EP0643881B1

公开(公告)日：1998-12-16

申请号：EP92913700.8

申请日：1992-06-05

Applicant: NOISE CANCELLATION TECHNOLOGIES, INC.

Inventor： CLAYBAUGH, David ,  DENENBERG, Jeffrey ,  BUSCH, Ralph ,  HOHMAN, John

IPC: H03B29/00 ,  G10K11/16

CPC classification number: G10K11/178 ,  A61F2011/145 ,  G10K2210/108 ,  G10K2210/1081 ,  G10K2210/3028 ,  G10K2210/3045 ,  G10K2210/3222

Abstract: An active plus selective headset system for provision of active attenuation of broadband noise as well as speech filtering comprising a headset (11) with reference microphones (14), residual microphones (13) and speakers (12) on each of a pair of open backed muffs (21, 22) and a controller (20).

公开(公告)号：EP0580579B1

公开(公告)日：1998-06-24

申请号：EP91920600.3

申请日：1991-04-19

Applicant: NOISE CANCELLATION TECHNOLOGIES, INC.

Inventor： EGHTESADI, Khosrow ,  HOGE, William, John, Joseph

IPC: H04R1/28 ,  H04R1/30 ,  G10K11/16

CPC classification number: H04R1/2842 ,  H04R1/30

公开(公告)号：EP0524236B1

公开(公告)日：1998-03-25

申请号：EP91907653.9

申请日：1991-04-09

Applicant: NOISE CANCELLATION TECHNOLOGIES, INC.

Inventor： GOSSMAN, William, E. ,  BURKE, Michael, J.

IPC: F16F15/04 ,  F16M5/00

CPC classification number: F16F13/26 ,  F16F15/027

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。

公开(公告)号：EP0636207B1

公开(公告)日：1997-06-04

申请号：EP92916056.2

申请日：1992-04-15

Applicant: NOISE CANCELLATION TECHNOLOGIES, INC.

Inventor： EGHTESADI, Ceasar

IPC: F01N1/06 ,  F01N7/18 ,  F01N1/00 ,  F01N1/08 ,  F01N1/16 ,  A61F11/06 ,  H03B29/00 ,  G10K11/16

CPC classification number: F01N1/16 ,  F01N1/065 ,  F01N1/089 ,  F01N9/00 ,  F01N2490/08 ,  Y02T10/47

Abstract: An active noise cancellation muffler for automotive and industrial use as shown in the figure comprises a muffler chamber, an internal plate with an attached pipe mounted inside the muffler chamber dividing the muffler chamber into first and second chambers, a controller system including a linear motor/actuate, a motor/actuator controller and an error microphone for moving the partition plate in both directions (±Δψ) to change the relative sizes of the first and second chambers.

公开(公告)号：EP0773760A1

公开(公告)日：1997-05-21

申请号：EP95927362.0

申请日：1995-07-20

Applicant: NOISE CANCELLATION TECHNOLOGIES, INC.

Inventor： ROSS, Colin, F. ,  LANGLEY, Andrew, J.

IPC: G10K11

CPC classification number: G10K11/178 ,  G10K2210/1053 ,  G10K2210/106 ,  G10K2210/1082 ,  G10K2210/12 ,  G10K2210/123 ,  G10K2210/128 ,  G10K2210/1281 ,  G10K2210/1282 ,  G10K2210/30232 ,  G10K2210/3031 ,  G10K2210/3051 ,  G10K2210/321 ,  G10K2210/3212 ,  G10K2210/3214 ,  G10K2210/3221 ,  G10K2210/503 ,  G10K2210/511

Abstract: An active noise and vibration reduction system for canceling noise in aircraft or other passenger carrying transportation systems which utilizes a series of seat mounted microphones and trim mounted speakers in conjunction with a digital controller with a class-D stage power amplifier and which is synched to the aircraft alternator.

公开(公告)号：EP0542784B1

公开(公告)日：1996-06-05

申请号：EP91913607.7

申请日：1991-07-19

Applicant: NOISE CANCELLATION TECHNOLOGIES, INC.

Inventor： JONES, Owen ,  TRINDER, Michael, Charles, John Rymer

IPC: H04R1/42 ,  F16F15/02 ,  F15B7/00

CPC classification number: B60K5/1283 ,  F15B7/005 ,  F16F15/023 ,  F16F15/027 ,  F16F15/03 ,  H04R1/42

Abstract: An actuator having a linear current force characteristic comprises a moving coil transducer and a hydraulic lever. The moving coil (9) is capable of producing only a relatively low force but with a relatively large displacement. The coil (9) is formed on a piston (8) which acts as an input piston to a hydraulic lever. An output piston (13) has a much larger area than the input piston (8). Thus, the long throw, low force input to the hydraulic lever is converted into a short throw, high force output at the second piston (13).

公开(公告)号：EP0704037A1

公开(公告)日：1996-04-03

申请号：EP94917347.0

申请日：1994-05-11

Applicant: NOISE CANCELLATION TECHNOLOGIES, INC.

Inventor： MILLER, Scott, K. ,  LANGLEY, Andrew J.

IPC: B60K5 ,  F16F7 ,  F16F13 ,  F16F15 ,  F16M7

CPC classification number: F16F13/06 ,  F16F7/10 ,  F16F15/027

Abstract: An inertial coupling mount with active vibration isolation means between the source of vibration and the base to which it is mounted is disclosed. Inertial coupling (30) in series with actuator (4) provides vibration control force to effect high-frequency, engine-induced, vibration reduction. Coupling (30) reduces displacements to which actuator (4) is exposed, enabling effective control throughout very large, road-induced mount displacements, while at the same time protecting the actuator.

Abstract translation: 公开了一种在振动源与其所安装到的基座之间具有主动隔振装置的惯性联接支架。 与致动器（4）串联的惯性联接件（30）提供振动控制力以实现高频，发动机引起的减振。 联轴器（30）减小了致动器（4）暴露的位移，使得能够在非常大的道路感应安装位移中有效控制，同时保护致动器。

公开(公告)号：EP0693212A1

公开(公告)日：1996-01-24

申请号：EP94912401.0

申请日：1994-04-07

Applicant: NOISE CANCELLATION TECHNOLOGIES, INC.

Inventor： GIFFORD, Carl, S. ,  JONES, Owen ,  TRINDER, Michael, Charles, John

IPC: F16F13 ,  F16F15 ,  G10K11

CPC classification number: F16F15/002 ,  F16F13/26 ,  F16F15/02 ,  G10K11/178 ,  G10K2210/121 ,  G10K2210/1282 ,  G10K2210/129 ,  G10K2210/1291 ,  G10K2210/3013 ,  G10K2210/30232 ,  G10K2210/3026 ,  G10K2210/3027 ,  G10K2210/3032 ,  G10K2210/3037 ,  G10K2210/3042 ,  G10K2210/3045 ,  G10K2210/3211 ,  G10K2210/3213 ,  G10K2210/501 ,  G10K2210/503 ,  G10K2210/511

Abstract: A vibration control system includes a processor-based circuit which monitors and controls an analog vibration control circuit. The system includes a sensor to detect the undesirable vibrations and a synchronous pulse generator for determining the fundamental frequency of the vibrations emitted by the source. An actuator produces anti-noise to counter unwanted vibrations. The processor circuit tests the system, monitors system functions, and adjusts various parameters to provide optimal performance.

公开(公告)号：EP0643881A1

公开(公告)日：1995-03-22

申请号：EP92913700.0

申请日：1992-06-05

Applicant: NOISE CANCELLATION TECHNOLOGIES, INC.

Inventor： CLAYBAUGH, David ,  DENENBERG, Jeffrey ,  BUSCH, Ralph ,  HOHMAN, John

IPC: A61F11 ,  G10K11 ,  H03B29

CPC classification number: G10K11/178 ,  A61F2011/145 ,  G10K2210/108 ,  G10K2210/1081 ,  G10K2210/3028 ,  G10K2210/3045 ,  G10K2210/3222

Abstract: An active plus selective headset system for provision of active attenuation of broadband noise as well as speech filtering comprising a headset (11) with reference microphones (14), residual microphones (13) and speakers (12) on each of a pair of open backed muffs (21, 22) and a controller (20).