Title:
適応識別とそれに関する適応エコーキャンセラのための方法と装置
Document Type and Number:
Japanese Patent JP4101317
Kind Code:
B2
Abstract:
An echo cancellation system uses recursive determination of transmit and receive gains (Grt, Get) using a calculated adaptive variable at depending on the return (yt) to direct (xt) signal power ration when the estimated direct signal power (P1t) exceeds a threshold and equal to 1 for lower levels. Includes Independent claims for the procedure used by the system.
Inventors:
Pascal scalar
Pierre Duhamel
Abdelkrim Benamar
Pierre Duhamel
Abdelkrim Benamar
Application Number:
JP24387296A
Publication Date:
June 18, 2008
Filing Date:
September 13, 1996
Export Citation:
Assignee:
FRANCE TELECOM
International Classes:
G10K11/178; H04B3/23; H03H17/02; H03H21/00; H04M1/60; H04M9/08; H04R3/02; H04R29/00
Domestic Patent References:
| JP481133A | ||||
| JP60240226A | ||||
| JP7131389A | ||||
| JP411406A |
Attorney, Agent or Firm:
Masatake Shiga
Takashi Watanabe
Shigeo Naruse
Takashi Watanabe
Shigeo Naruse