JPS5363910A - Audible signal sound signal detection system - Google Patents

Audible signal sound signal detection system

Info

Publication number
JPS5363910A
JPS5363910A JP13839276A JP13839276A JPS5363910A JP S5363910 A JPS5363910 A JP S5363910A JP 13839276 A JP13839276 A JP 13839276A JP 13839276 A JP13839276 A JP 13839276A JP S5363910 A JPS5363910 A JP S5363910A
Authority
JP
Japan
Prior art keywords
detection system
audible
sound signal
signal detection
audible signal
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
JP13839276A
Other languages
Japanese (ja)
Other versions
JPS6056024B2 (en
Inventor
Yoshikazu Suzuki
Hiroshi Manba
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.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry 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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP51138392A priority Critical patent/JPS6056024B2/en
Publication of JPS5363910A publication Critical patent/JPS5363910A/en
Publication of JPS6056024B2 publication Critical patent/JPS6056024B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/446—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

PURPOSE:To secure an automatic detection of audible signal sound such as a transmission sound, etc. by detecting the fact that the input signal exceeds the reference level and continues more than a fixed reference time in a communication network.
JP51138392A 1976-11-19 1976-11-19 Continuous ring signal detection method Expired JPS6056024B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP51138392A JPS6056024B2 (en) 1976-11-19 1976-11-19 Continuous ring signal detection method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP51138392A JPS6056024B2 (en) 1976-11-19 1976-11-19 Continuous ring signal detection method

Publications (2)

Publication Number Publication Date
JPS5363910A true JPS5363910A (en) 1978-06-07
JPS6056024B2 JPS6056024B2 (en) 1985-12-07

Family

ID=15220861

Family Applications (1)

Application Number Title Priority Date Filing Date
JP51138392A Expired JPS6056024B2 (en) 1976-11-19 1976-11-19 Continuous ring signal detection method

Country Status (1)

Country Link
JP (1) JPS6056024B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4558181A (en) * 1983-04-27 1985-12-10 Phonetics, Inc. Portable device for monitoring local area
US4716582A (en) * 1983-04-27 1987-12-29 Phonetics, Inc. Digital and synthesized speech alarm system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4731305U (en) * 1971-05-01 1972-12-08
JPS4897433A (en) * 1972-03-17 1973-12-12
JPS4960406A (en) * 1972-10-11 1974-06-12

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4731305U (en) * 1971-05-01 1972-12-08
JPS4897433A (en) * 1972-03-17 1973-12-12
JPS4960406A (en) * 1972-10-11 1974-06-12

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4558181A (en) * 1983-04-27 1985-12-10 Phonetics, Inc. Portable device for monitoring local area
US4716582A (en) * 1983-04-27 1987-12-29 Phonetics, Inc. Digital and synthesized speech alarm system

Also Published As

Publication number Publication date
JPS6056024B2 (en) 1985-12-07

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