JPS6156526A - 反響信号打消装置 - Google Patents

反響信号打消装置

Info

Publication number
JPS6156526A
JPS6156526A JP17744384A JP17744384A JPS6156526A JP S6156526 A JPS6156526 A JP S6156526A JP 17744384 A JP17744384 A JP 17744384A JP 17744384 A JP17744384 A JP 17744384A JP S6156526 A JPS6156526 A JP S6156526A
Authority
JP
Japan
Prior art keywords
signal
double talk
echo
threshold value
echo path
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
JP17744384A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0578974B2 (enrdf_load_stackoverflow
Inventor
Shigenobu Minami
重信 南
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP17744384A priority Critical patent/JPS6156526A/ja
Publication of JPS6156526A publication Critical patent/JPS6156526A/ja
Publication of JPH0578974B2 publication Critical patent/JPH0578974B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers
    • H04B3/234—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers using double talk detection

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
JP17744384A 1984-08-28 1984-08-28 反響信号打消装置 Granted JPS6156526A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17744384A JPS6156526A (ja) 1984-08-28 1984-08-28 反響信号打消装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17744384A JPS6156526A (ja) 1984-08-28 1984-08-28 反響信号打消装置

Publications (2)

Publication Number Publication Date
JPS6156526A true JPS6156526A (ja) 1986-03-22
JPH0578974B2 JPH0578974B2 (enrdf_load_stackoverflow) 1993-10-29

Family

ID=16031038

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17744384A Granted JPS6156526A (ja) 1984-08-28 1984-08-28 反響信号打消装置

Country Status (1)

Country Link
JP (1) JPS6156526A (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62299120A (ja) * 1986-06-18 1987-12-26 Fujitsu Ltd ダブルト−ク検出回路
JPS63318821A (ja) * 1987-06-20 1988-12-27 Nec Corp 反響消去装置
JPS645233A (en) * 1987-06-29 1989-01-10 Oki Electric Ind Co Ltd Echo canceller
US5237562A (en) * 1990-03-14 1993-08-17 Fujitsu Limited Echo path transition detection
US6445792B1 (en) 1996-04-25 2002-09-03 Mitsubishi Denki Kabushiki Kaisha Echo canceller for decreasing a deterioration factor of a speech quality
EP0792029A3 (en) * 1996-02-26 2003-06-25 Lucent Technologies Inc. Echo canceller E-side speech detector

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62299120A (ja) * 1986-06-18 1987-12-26 Fujitsu Ltd ダブルト−ク検出回路
JPS63318821A (ja) * 1987-06-20 1988-12-27 Nec Corp 反響消去装置
JPS645233A (en) * 1987-06-29 1989-01-10 Oki Electric Ind Co Ltd Echo canceller
US5237562A (en) * 1990-03-14 1993-08-17 Fujitsu Limited Echo path transition detection
EP0792029A3 (en) * 1996-02-26 2003-06-25 Lucent Technologies Inc. Echo canceller E-side speech detector
US6445792B1 (en) 1996-04-25 2002-09-03 Mitsubishi Denki Kabushiki Kaisha Echo canceller for decreasing a deterioration factor of a speech quality

Also Published As

Publication number Publication date
JPH0578974B2 (enrdf_load_stackoverflow) 1993-10-29

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term