JPS5295915A - Adaptable audio detection circuit - Google Patents

Adaptable audio detection circuit

Info

Publication number
JPS5295915A
JPS5295915A JP1262076A JP1262076A JPS5295915A JP S5295915 A JPS5295915 A JP S5295915A JP 1262076 A JP1262076 A JP 1262076A JP 1262076 A JP1262076 A JP 1262076A JP S5295915 A JPS5295915 A JP S5295915A
Authority
JP
Japan
Prior art keywords
detection circuit
audio detection
adaptable
adaptable audio
dsi
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
JP1262076A
Other languages
Japanese (ja)
Other versions
JPS5834986B2 (en
Inventor
Kazuo Ochiai
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 JP1262076A priority Critical patent/JPS5834986B2/en
Publication of JPS5295915A publication Critical patent/JPS5295915A/en
Publication of JPS5834986B2 publication Critical patent/JPS5834986B2/en
Expired legal-status Critical Current

Links

Classifications

    • 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)
  • Time-Division Multiplex Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PURPOSE:Using memory circuit, audio tone is detected from the sample value signal to make it adaptable for DSI (digital speech interpolation).
JP1262076A 1976-02-06 1976-02-06 Adaptive voice detection circuit Expired JPS5834986B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1262076A JPS5834986B2 (en) 1976-02-06 1976-02-06 Adaptive voice detection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1262076A JPS5834986B2 (en) 1976-02-06 1976-02-06 Adaptive voice detection circuit

Publications (2)

Publication Number Publication Date
JPS5295915A true JPS5295915A (en) 1977-08-12
JPS5834986B2 JPS5834986B2 (en) 1983-07-30

Family

ID=11810412

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1262076A Expired JPS5834986B2 (en) 1976-02-06 1976-02-06 Adaptive voice detection circuit

Country Status (1)

Country Link
JP (1) JPS5834986B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5461404A (en) * 1977-10-25 1979-05-17 Nec Corp Adaptive signal detector
JPS5819553U (en) * 1981-07-31 1983-02-07 日本電気株式会社 digital voice detector
JPS60227536A (en) * 1984-04-25 1985-11-12 Nec Corp Line-engagement detecting circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5461404A (en) * 1977-10-25 1979-05-17 Nec Corp Adaptive signal detector
JPS5819553U (en) * 1981-07-31 1983-02-07 日本電気株式会社 digital voice detector
JPS60227536A (en) * 1984-04-25 1985-11-12 Nec Corp Line-engagement detecting circuit

Also Published As

Publication number Publication date
JPS5834986B2 (en) 1983-07-30

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