Title:
【発明の名称】多チャンネルエコー除去方法および装置
Document Type and Number:
Japanese Patent JP2792252
Kind Code:
B2
Abstract:
Echo canceling method and apparatus for subtracting, from a mixed signal in which echoes produced from a plurality of reception signals are mixed with a transmission signal, a replica of the echoes in order to cancel the echoes in the mixed signal. The replica of the echoes are generated by the steps of selecting the reception signal which is leading in phase and producing a replica of the echoes from the selected reception signal by an adaptive filter. Generally, the replicas are produced by adaptive filters provided in one-to-one correspondence with the mixed signals.
Inventors:
HIRANO AKIHIRO
SUGYAMA AKIHIKO
SUGYAMA AKIHIKO
Application Number:
JP4944591A
Publication Date:
September 03, 1998
Filing Date:
March 14, 1991
Export Citation:
Assignee:
NIPPON DENKI KK
International Classes:
G10K15/00; H03H21/00; H04B3/23; H04M9/08; (IPC1-7): H04B3/23; H03H21/00
Domestic Patent References:
| JP6197050A | ||||
| JP5218906A |
Other References:
１９９１年電子情報通信学会春季全国大会講演論文集、〔分冊１〕（１９９１−３−１５）ＰＰ．１．２０２
１９９２年電子情報通信学会春季全国大会講演論文集、〔分冊１〕（１９９２−３−１５）ＰＰ．１．１５８
電子通信学会技術研究報告ＣＳ８４−１７８、Ｖｏｌ．８４、Ｎｏ．３３０（１９８５−３−２６）ＰＰ．７−１４
１９９２年電子情報通信学会春季全国大会講演論文集、〔分冊１〕（１９９２−３−１５）ＰＰ．１．１５８
電子通信学会技術研究報告ＣＳ８４−１７８、Ｖｏｌ．８４、Ｎｏ．３３０（１９８５−３−２６）ＰＰ．７−１４
Attorney, Agent or Firm:
Naoki Kyomoto (2 outside)