BE878073A - Procede pour reconnaitre surement des signaux a frequences acoustiques sinusoidaux - Google Patents

Procede pour reconnaitre surement des signaux a frequences acoustiques sinusoidaux

Info

Publication number
BE878073A
BE878073A BE0/196598A BE196598A BE878073A BE 878073 A BE878073 A BE 878073A BE 0/196598 A BE0/196598 A BE 0/196598A BE 196598 A BE196598 A BE 196598A BE 878073 A BE878073 A BE 878073A
Authority
BE
Belgium
Prior art keywords
emi
recognition
surely
frequency signals
acoustic frequency
Prior art date
Application number
BE0/196598A
Other languages
English (en)
French (fr)
Original Assignee
Telefonbau & Normalzeit Gmbh
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 Telefonbau & Normalzeit Gmbh filed Critical Telefonbau & Normalzeit Gmbh
Publication of BE878073A publication Critical patent/BE878073A/fr

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)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Machine Translation (AREA)
  • Semiconductor Integrated Circuits (AREA)
BE0/196598A 1978-08-05 1979-08-03 Procede pour reconnaitre surement des signaux a frequences acoustiques sinusoidaux BE878073A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2834405 1978-08-05

Publications (1)

Publication Number Publication Date
BE878073A true BE878073A (fr) 1979-12-03

Family

ID=6046323

Family Applications (1)

Application Number Title Priority Date Filing Date
BE0/196598A BE878073A (fr) 1978-08-05 1979-08-03 Procede pour reconnaitre surement des signaux a frequences acoustiques sinusoidaux

Country Status (4)

Country Link
AT (1) AT370578B (de)
BE (1) BE878073A (de)
ES (1) ES483114A1 (de)
IT (1) IT1117427B (de)

Also Published As

Publication number Publication date
IT1117427B (it) 1986-02-17
AT370578B (de) 1983-04-11
ATA759178A (de) 1982-08-15
IT7949912A0 (it) 1979-07-31
ES483114A1 (es) 1980-04-16

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: TELEFONBAU UND NORMALZEIT G.M.B.H.

Effective date: 19840803