JPS6038958A - 拡声電話装置 - Google Patents

拡声電話装置

Info

Publication number
JPS6038958A
JPS6038958A JP14753783A JP14753783A JPS6038958A JP S6038958 A JPS6038958 A JP S6038958A JP 14753783 A JP14753783 A JP 14753783A JP 14753783 A JP14753783 A JP 14753783A JP S6038958 A JPS6038958 A JP S6038958A
Authority
JP
Japan
Prior art keywords
echo canceller
wire
input
echo
spectrum
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP14753783A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6364104B2 (ru
Inventor
Yoshiji Furuya
古屋　宣二
Yasuo Ito
泰雄 伊藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP14753783A priority Critical patent/JPS6038958A/ja
Publication of JPS6038958A publication Critical patent/JPS6038958A/ja
Publication of JPS6364104B2 publication Critical patent/JPS6364104B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • H04M9/085—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic using digital techniques
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • H04M3/561—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities by multiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/002—Applications of echo suppressors or cancellers in telephonic connections

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
JP14753783A 1983-08-12 1983-08-12 拡声電話装置 Granted JPS6038958A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14753783A JPS6038958A (ja) 1983-08-12 1983-08-12 拡声電話装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14753783A JPS6038958A (ja) 1983-08-12 1983-08-12 拡声電話装置

Publications (2)

Publication Number Publication Date
JPS6038958A true JPS6038958A (ja) 1985-02-28
JPS6364104B2 JPS6364104B2 (ru) 1988-12-09

Family

ID=15432553

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14753783A Granted JPS6038958A (ja) 1983-08-12 1983-08-12 拡声電話装置

Country Status (1)

Country Link
JP (1) JPS6038958A (ru)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62163424A (ja) * 1986-01-13 1987-07-20 Nec Corp 音響用エコ−キヤンセラ
JPS6481557A (en) * 1987-09-24 1989-03-27 Oki Electric Ind Co Ltd Automobile telephone set
JP2007318274A (ja) * 2006-05-24 2007-12-06 Yamaha Corp 放収音装置

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DIGITAL SATTELITE COMMUNICATIONS=1975 *
ELECTRONICS LETTERS=1979 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62163424A (ja) * 1986-01-13 1987-07-20 Nec Corp 音響用エコ−キヤンセラ
JPS6481557A (en) * 1987-09-24 1989-03-27 Oki Electric Ind Co Ltd Automobile telephone set
JP2007318274A (ja) * 2006-05-24 2007-12-06 Yamaha Corp 放収音装置

Also Published As

Publication number Publication date
JPS6364104B2 (ru) 1988-12-09

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