JPS55118100A - Periodic adjustment and setting of new operation level for detection threshold - Google Patents

Periodic adjustment and setting of new operation level for detection threshold

Info

Publication number
JPS55118100A
JPS55118100A JP370280A JP370280A JPS55118100A JP S55118100 A JPS55118100 A JP S55118100A JP 370280 A JP370280 A JP 370280A JP 370280 A JP370280 A JP 370280A JP S55118100 A JPS55118100 A JP S55118100A
Authority
JP
Japan
Prior art keywords
comparing
signals
threshold value
samples
storing
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
JP370280A
Other languages
English (en)
Other versions
JPS5853356B2 (ja
Inventor
Jiyooji Kuroozu Uiriamu
Robaato Notsukusu Chiyaaruzu
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of JPS55118100A publication Critical patent/JPS55118100A/ja
Publication of JPS5853356B2 publication Critical patent/JPS5853356B2/ja
Expired 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/17—Time-division multiplex systems in which the transmission channel allotted to a first user may be taken away and re-allotted to a second user if the first user becomes inactive, e.g. TASI
    • H04J3/175—Speech activity or inactivity detectors

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Time-Division Multiplex Systems (AREA)
JP55003702A 1979-03-05 1980-01-18 検知閾値に対する新動作レベルを定期的に調節及び設定する方法 Expired JPS5853356B2 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1779179A 1979-03-05 1979-03-05

Publications (2)

Publication Number Publication Date
JPS55118100A true JPS55118100A (en) 1980-09-10
JPS5853356B2 JPS5853356B2 (ja) 1983-11-29

Family

ID=21784567

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55003702A Expired JPS5853356B2 (ja) 1979-03-05 1980-01-18 検知閾値に対する新動作レベルを定期的に調節及び設定する方法

Country Status (4)

Country Link
EP (1) EP0015363B1 (ja)
JP (1) JPS5853356B2 (ja)
CA (1) CA1130920A (ja)
DE (1) DE3064505D1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5850596A (ja) * 1981-09-22 1983-03-25 株式会社日立製作所 音声情報蓄積再生方式
JPS58217998A (ja) * 1982-01-27 1983-12-19 ウエスターン　エレクトリック　カムパニー，インコーポレーテッド スピ−チ処理システムと方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4460808A (en) * 1982-08-23 1984-07-17 At&T Bell Laboratories Adaptive signal receiving method and apparatus
EP0127718B1 (fr) * 1983-06-07 1987-03-18 International Business Machines Corporation Procédé de détection d'activité dans un système de transmission de la voix

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3520999A (en) * 1967-03-27 1970-07-21 Bell Telephone Labor Inc Digital speech detection system
US3896273A (en) * 1971-01-08 1975-07-22 Communications Satellite Corp Digital echo suppressor
US3832491A (en) * 1973-02-13 1974-08-27 Communications Satellite Corp Digital voice switch with an adaptive digitally-controlled threshold
US3882458A (en) * 1974-03-27 1975-05-06 Gen Electric Voice operated switch including apparatus for establishing a variable threshold noise level
FR2304899A1 (fr) * 1975-03-20 1976-10-15 Cit Alcatel Detecteur de crete d'une variable
US4008375A (en) * 1975-08-21 1977-02-15 Communications Satellite Corporation (Comsat) Digital voice switch for single or multiple channel applications
US4052568A (en) * 1976-04-23 1977-10-04 Communications Satellite Corporation Digital voice switch
US4028496A (en) * 1976-08-17 1977-06-07 Bell Telephone Laboratories, Incorporated Digital speech detector
JPS6013535B2 (ja) * 1977-05-12 1985-04-08 日本電気株式会社 適応形音声検出器
JPS5947503B2 (ja) * 1977-04-15 1984-11-19 日本電気株式会社 適応形音声検出器

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5850596A (ja) * 1981-09-22 1983-03-25 株式会社日立製作所 音声情報蓄積再生方式
JPS58217998A (ja) * 1982-01-27 1983-12-19 ウエスターン　エレクトリック　カムパニー，インコーポレーテッド スピ−チ処理システムと方法
JPH0467200B2 (ja) * 1983-01-27 1992-10-27 Ei Teii Ando Teii Tekunorojiizu Inc

Also Published As

Publication number Publication date
JPS5853356B2 (ja) 1983-11-29
EP0015363B1 (fr) 1983-08-10
CA1130920A (en) 1982-08-31
DE3064505D1 (en) 1983-09-15
EP0015363A1 (fr) 1980-09-17

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