Title:
音声通信端末の雑音除去装置
Document Type and Number:
Japanese Patent JP5054324
Kind Code:
B2
Abstract:
A noise-canceling device of a voice communication terminal that removes noise elements included in received voice-signals. The device comprises: a digital filter array (14) that exhibits filter qualities in response to a coefficient setting signal showing each supplied arrays of filter coefficients, and includes a first-stage filter (14a) that receives the received voice signals as well as multiple later-stage filters (14b, c...) connected thereto in a straight line; a filter qualities designator that generates input designation that designates each qualities of the multiple digital filters forming the digital filters array; and a filter coefficient setter that retains multiple arrays of filter coefficients, extracts a filter coefficient array corresponding to the designation input from among the multiple filter coefficient arrays, and supplies to each multiple digital filters (14a, b, c...). The noise-canceling device for a voice communication terminal provided to obtain desired filter qualities in real-time without calculation of filter coefficients.
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Inventors:
Hiroshi Kubotaki
Kenichi Kurihara
Kenichi Kurihara
Application Number:
JP2006115351A
Publication Date:
October 24, 2012
Filing Date:
April 19, 2006
Export Citation:
Assignee:
Oki Electric Industry Co., Ltd.
Oki Software Co., Ltd.
Oki Software Co., Ltd.
International Classes:
H04M1/00; G10L21/0208; H03H17/02
Domestic Patent References:
| JP2001285409A | ||||
| JP2005244541A | ||||
| JP2001185991A | ||||
| JP742236U | ||||
| JP292225U | ||||
| JP63269613A | ||||
| JP715264A | ||||
| JP8234746A | ||||
| JP200082961A | ||||
| JP200478238A | ||||
| JP6303690A | ||||
| JP8234746A |
Attorney, Agent or Firm:
Motohiko Fujimura