Title:
COMMUNICATION SYSTEM PROVIDED WITH ACOUSTIC ECHO CANCELLER
Document Type and Number:
Japanese Patent JP3234811
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To reduce the cost of an entire communication system by eliminating an acoustic echo canceller which is provided on a remote side communication device and installing a single acoustic echo canceller in a proximate side communication device as a selected acoustic echo cenceller for remote side use thereby miniaturizing each of a plurality of remote side communication devices.
SOLUTION: A proximate side communication device 1 is equipped with proximate side and remote side acoustic echo cancellers 20, 50 that eliminate acoustic echoes resulting from sound from loudspeakers 16, 116 sneaked to microphones 11, 111. Thus, a control section 81 for the acoustic echo cancellers is integrated in the proximate side communication device and when conducting communication of one-to-many points, since it is not required to equip an acoustic echo canceller in a plurality of the remote side communication devices, each remote side communication device is miniaturized and the cost of the communication system is reduced.
Inventors:
Minoru Matsui
Application Number:
JP29135098A
Publication Date:
December 04, 2001
Filing Date:
September 30, 1998
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
H04R3/02; H03H17/02; H03H21/00; H04B3/23; H04M1/60; (IPC1-7): H04M1/60; H04B3/23; H04R3/02
Domestic Patent References:
| JP61263330A | ||||
| JP496522A | ||||
| JP7297901A | ||||
| JP10229354A |
Attorney, Agent or Firm:
Isao Saito