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：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).