JPH0578974B2 - - Google Patents

Info

Publication number
JPH0578974B2
JPH0578974B2 JP17744384A JP17744384A JPH0578974B2 JP H0578974 B2 JPH0578974 B2 JP H0578974B2 JP 17744384 A JP17744384 A JP 17744384A JP 17744384 A JP17744384 A JP 17744384A JP H0578974 B2 JPH0578974 B2 JP H0578974B2
Authority
JP
Japan
Prior art keywords
signal
echo
double talk
threshold value
level
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.)
Expired - Lifetime
Application number
JP17744384A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6156526A (ja
Inventor
Shigenobu Minami
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
Tokyo Shibaura 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 Tokyo Shibaura Electric Co Ltd filed Critical Tokyo Shibaura Electric Co Ltd
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 JPS6156526A (ja) 1986-03-22
JPH0578974B2 true 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)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0691482B2 (ja) * 1986-06-18 1994-11-14 富士通株式会社 ダブルト−ク検出回路
JPH0771030B2 (ja) * 1987-06-20 1995-07-31 日本電気株式会社 反響消去装置
JPS645233A (en) * 1987-06-29 1989-01-10 Oki Electric Ind Co Ltd Echo canceller
JPH03262939A (ja) * 1990-03-14 1991-11-22 Fujitsu Ltd エコー経路変動検出方法およびその装置
US5668865A (en) * 1996-02-26 1997-09-16 Lucent Technologies Inc. Echo canceler E-side speech detector
TW432855B (en) 1996-04-25 2001-05-01 Mitsubishi Electric Corp Echo eliminator

Also Published As

Publication number Publication date
JPS6156526A (ja) 1986-03-22

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term