公开(公告)号：EP1053541A1

公开(公告)日：2000-11-22

申请号：EP99902986.1

申请日：1999-01-06

Applicant: NOISE CANCELLATION TECHNOLOGIES, INC.

Inventor： CLAYBAUGH, David ,  O'BRIEN, Sean

IPC: G10K11/00

CPC classification number: H04R1/023

Abstract: A decorative speaker cover is disclosed that transforms any loudspeaker into a work of art. The decorative speaker cover of the invention consists of a sheet of material (1) stretched across and adhered to a support frame (2). The sheet of material (1) contains an artistic work like a picture, design, custom photograph, print, etc. The invention also includes methods for attaching the decorative speaker covers to a loudspeaker cabinet (3). The disclosed methods allow speaker covers to be readily changed.

公开(公告)号：EP0643882A1

公开(公告)日：1995-03-22

申请号：EP92913918.0

申请日：1992-06-05

Applicant: NOISE CANCELLATION TECHNOLOGIES, INC.

Inventor： EVANS, Robert ,  CLAYBAUGH, David ,  EATWELL, Graham ,  PARRELLA, Michael

IPC: A61F11 ,  H04R5

CPC classification number: H04R1/1083 ,  A61F2011/145 ,  H04R5/033

Abstract: A passive selective headset (11) characterized in that a controller accepts speech noise and warning signals from microphones (14) and allows the user to employ an 'in-wire' controller (17) or an adaptive speech filter (16) to attenuate the noise from the signal fed to the speakers (12) adjacent the user's ear.

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).