SE8404832D0 - Sett och anordning for bestemning av en suspekt signals spektralfordelning - Google Patents

Sett och anordning for bestemning av en suspekt signals spektralfordelning

Info

Publication number
SE8404832D0
SE8404832D0 SE8404832A SE8404832A SE8404832D0 SE 8404832 D0 SE8404832 D0 SE 8404832D0 SE 8404832 A SE8404832 A SE 8404832A SE 8404832 A SE8404832 A SE 8404832A SE 8404832 D0 SE8404832 D0 SE 8404832D0
Authority
SE
Sweden
Prior art keywords
tone
signals
group
long
time interval
Prior art date
Application number
SE8404832A
Other languages
English (en)
Other versions
SE8404832L (sv
SE443240B (sv
Inventor
M H Graham
E Callaway
Original Assignee
Transwave
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 Transwave filed Critical Transwave
Publication of SE8404832D0 publication Critical patent/SE8404832D0/sv
Publication of SE8404832L publication Critical patent/SE8404832L/sv
Publication of SE443240B publication Critical patent/SE443240B/sv

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
SE8404832A 1980-09-29 1984-09-27 Sett och anordning for bestemning av en formodad signals spektrala fordelning SE443240B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19155680A 1980-09-29 1980-09-29

Publications (3)

Publication Number Publication Date
SE8404832D0 true SE8404832D0 (sv) 1984-09-27
SE8404832L SE8404832L (sv) 1986-02-17
SE443240B SE443240B (sv) 1986-02-17

Family

ID=22705956

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8404832A SE443240B (sv) 1980-09-29 1984-09-27 Sett och anordning for bestemning av en formodad signals spektrala fordelning

Country Status (2)

Country Link
DE (1) DE3436029A1 (sv)
SE (1) SE443240B (sv)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3831047A1 (de) * 1988-09-12 1990-03-22 Nixdorf Computer Ag Schaltungsanordnung zum frequenzselektiven erkennen von tonsignalen
CN104820131B (zh) * 2015-04-29 2017-01-18 江苏大学 一种运用对偶计算准确识别超低频信号的方法

Also Published As

Publication number Publication date
SE8404832L (sv) 1986-02-17
DE3436029A1 (de) 1986-04-03
SE443240B (sv) 1986-02-17

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