JPS53108709A - Digital sound insertion system - Google Patents

Digital sound insertion system

Info

Publication number
JPS53108709A
JPS53108709A JP2361277A JP2361277A JPS53108709A JP S53108709 A JPS53108709 A JP S53108709A JP 2361277 A JP2361277 A JP 2361277A JP 2361277 A JP2361277 A JP 2361277A JP S53108709 A JPS53108709 A JP S53108709A
Authority
JP
Japan
Prior art keywords
digital sound
insertion system
sound insertion
unnaturalness
executed
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
JP2361277A
Other languages
Japanese (ja)
Other versions
JPS6051820B2 (en
Inventor
Rikio Maruta
Taku Arazeki
Hisashi Kaneko
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 JP2361277A priority Critical patent/JPS6051820B2/en
Publication of JPS53108709A publication Critical patent/JPS53108709A/en
Publication of JPS6051820B2 publication Critical patent/JPS6051820B2/en
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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

PURPOSE:To improve unnaturalness of the call due to a silent state on domestic communication circuits, by inserting an artificial noise while a DSI channel is being separated for an echo suppressing operation is being executed.
JP2361277A 1977-03-04 1977-03-04 Digital audio input method Expired JPS6051820B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2361277A JPS6051820B2 (en) 1977-03-04 1977-03-04 Digital audio input method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2361277A JPS6051820B2 (en) 1977-03-04 1977-03-04 Digital audio input method

Publications (2)

Publication Number Publication Date
JPS53108709A true JPS53108709A (en) 1978-09-21
JPS6051820B2 JPS6051820B2 (en) 1985-11-15

Family

ID=12115427

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2361277A Expired JPS6051820B2 (en) 1977-03-04 1977-03-04 Digital audio input method

Country Status (1)

Country Link
JP (1) JPS6051820B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60107937A (en) * 1983-11-16 1985-06-13 Fujitsu Ltd Noise insertion system
JPH0239744A (en) * 1988-06-20 1990-02-08 American Teleph & Telegr Co <Att> Method and receiver for noise matching
JPH04293823A (en) * 1991-03-20 1992-10-19 Kyowa Sogyo Kk Concrete panel unit and concrete wall body

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60107937A (en) * 1983-11-16 1985-06-13 Fujitsu Ltd Noise insertion system
JPH0239744A (en) * 1988-06-20 1990-02-08 American Teleph & Telegr Co <Att> Method and receiver for noise matching
JPH04293823A (en) * 1991-03-20 1992-10-19 Kyowa Sogyo Kk Concrete panel unit and concrete wall body

Also Published As

Publication number Publication date
JPS6051820B2 (en) 1985-11-15

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