Title:
【発明の名称】雑音除去装置
Document Type and Number:
Japanese Patent JP3059753
Kind Code:
B2
Abstract:
PURPOSE:To provide a noise eliminating device having a good noise eliminating effect by providing a filter for referring to a noise signal through a converting means as a noise reference signal, and eliminating noise for a main signal. CONSTITUTION:When a predetermined noise is generated from a noise source, this signal is transmitted to a microphone 3a to generate a signal similar to a signal generated at a point C at a point A of a second adaptive filter means 2. After this, if a voice is generated from a voice generating source, a signal from a level determining circuit 5 falls, and a switch 6 is released. By the release of the switch 6, a command for fixing a coefficient of a filter 2a is given from a control circuit. A similar signal corresponding to generation of noise is thus generated at the point A. A first adaptive filter device 1 receives the similar signal, and eliminates a noise component combined with the signal from the noise generating source based on the similar signal.
Inventors:
Hideharu Nishida
Shozo Sugishita
Shozo Sugishita
Application Number:
JP30295590A
Publication Date:
July 04, 2000
Filing Date:
November 07, 1990
Export Citation:
Assignee:
Sanyo Electric Co., Ltd.
International Classes:
G10L15/20; G10L21/02; G10L21/0208; G10L21/0224; H03H21/00; H04B15/00; (IPC1-7): G10L15/20; G10L21/02; H03H21/00; H04B15/00
Domestic Patent References:
| JP3218199A | ||||
| JP3213097A | ||||
| JP3179500A | ||||
| JP2244098A | ||||
| JP1200294A | ||||
| JP1118900A | ||||
| JP834503B2 | ||||
| JP685500B2 | ||||
| JP535930B2 |
Other References:
【文献】特許2615551(JP,B2)
Attorney, Agent or Firm:
Masamasa Shibano