AU517922B2 - Tone detection - Google Patents

Tone detection

Info

Publication number
AU517922B2
AU517922B2 AU32019/77A AU3201977A AU517922B2 AU 517922 B2 AU517922 B2 AU 517922B2 AU 32019/77 A AU32019/77 A AU 32019/77A AU 3201977 A AU3201977 A AU 3201977A AU 517922 B2 AU517922 B2 AU 517922B2
Authority
AU
Australia
Prior art keywords
tone detection
tone
detection
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
Application number
AU32019/77A
Other versions
AU3201977A (en
Inventor
Professor R. H Prater
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.)
SYDNEY THE, University of
Original Assignee
University of Sydney
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 University of Sydney filed Critical University of Sydney
Priority to AU32019/77A priority Critical patent/AU517922B2/en
Publication of AU3201977A publication Critical patent/AU3201977A/en
Application granted granted Critical
Publication of AU517922B2 publication Critical patent/AU517922B2/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
    • H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
    • H04Q1/457—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals
    • H04Q1/4575—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals which are transmitted in digital form

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
AU32019/77A 1976-12-23 1976-12-23 Tone detection Expired AU517922B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU32019/77A AU517922B2 (en) 1976-12-23 1976-12-23 Tone detection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU32019/77A AU517922B2 (en) 1976-12-23 1976-12-23 Tone detection

Publications (2)

Publication Number Publication Date
AU3201977A AU3201977A (en) 1979-06-28
AU517922B2 true AU517922B2 (en) 1981-09-03

Family

ID=3719632

Family Applications (1)

Application Number Title Priority Date Filing Date
AU32019/77A Expired AU517922B2 (en) 1976-12-23 1976-12-23 Tone detection

Country Status (1)

Country Link
AU (1) AU517922B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU595561B2 (en) * 1985-12-31 1990-04-05 Wang Laboratories, Inc. Signal detection and discrimination using waveform peak factor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU595561B2 (en) * 1985-12-31 1990-04-05 Wang Laboratories, Inc. Signal detection and discrimination using waveform peak factor

Also Published As

Publication number Publication date
AU3201977A (en) 1979-06-28

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