FR2134004B1 - - Google Patents

Info

Publication number
FR2134004B1
FR2134004B1 FR7214155A FR7214155A FR2134004B1 FR 2134004 B1 FR2134004 B1 FR 2134004B1 FR 7214155 A FR7214155 A FR 7214155A FR 7214155 A FR7214155 A FR 7214155A FR 2134004 B1 FR2134004 B1 FR 2134004B1
Authority
FR
France
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
FR7214155A
Other versions
FR2134004A1 (fr
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of FR2134004A1 publication Critical patent/FR2134004A1/fr
Application granted granted Critical
Publication of FR2134004B1 publication Critical patent/FR2134004B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0248—Filters characterised by a particular frequency response or filtering method
    • H03H17/025—Notch filters

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Measuring Frequencies, Analyzing Spectra (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
FR7214155A 1971-04-22 1972-04-21 Expired FR2134004B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH561671A CH530643A (de) 1971-04-22 1971-04-22 Verfahren und Einrichtung zum Erkennen einer vorbestimmten Frequenz in einem Frequenzgemisch

Publications (2)

Publication Number Publication Date
FR2134004A1 FR2134004A1 (fr) 1972-12-01
FR2134004B1 true FR2134004B1 (fr) 1975-06-20

Family

ID=4296580

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7214155A Expired FR2134004B1 (fr) 1971-04-22 1972-04-21

Country Status (5)

Country Link
US (1) US3803390A (fr)
CH (1) CH530643A (fr)
DE (1) DE2152687C3 (fr)
FR (1) FR2134004B1 (fr)
GB (1) GB1382524A (fr)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH559983A5 (fr) * 1972-12-28 1975-03-14 Zellweger Uster Ag
US3935437A (en) * 1974-02-25 1976-01-27 Sanders Associates, Inc. Signal processor
USRE29460E (en) * 1974-07-22 1977-10-25 Gte Automatic Electric Laboratories Incorporated PCM tone receiver using optimum statistical technique
US3961167A (en) * 1974-07-22 1976-06-01 Gte Automatic Electric Laboratories Incorporated PCM tone receiver using optimum statistical technique
US3926367A (en) * 1974-09-27 1975-12-16 Us Navy Complex filters, convolvers, and multipliers
JPS5827546B2 (ja) * 1975-04-22 1983-06-10 日本電気株式会社 エンザンソウチ
US4031462A (en) * 1975-07-07 1977-06-21 Motorola, Inc. Frequency spectrum analyzer
NL170797C (nl) * 1975-11-18 1982-12-16 Nederlanden Staat Inrichting voor het detecteren van een signaal.
US4086657A (en) * 1976-08-18 1978-04-25 The United States Of America As Represented By The Secretary Of The Air Force Five-stage four-bit complex multiplier
FR2413712A1 (fr) * 1977-12-30 1979-07-27 Ibm France Microprocesseur specialise pour le calcul de la somme de produits de deux operandes complexes
US4245325A (en) * 1978-02-24 1981-01-13 Nippon Telegraph And Telephone Public Corporation Digital multifrequency signalling receiver
US4181967A (en) * 1978-07-18 1980-01-01 Motorola, Inc. Digital apparatus approximating multiplication of analog signal by sine wave signal and method
DE2833335A1 (de) * 1978-07-29 1980-03-06 Licentia Gmbh Digitaler frequenzdiskriminator
GB2037523B (en) * 1978-12-04 1983-05-05 Gen Electric Frequency sensing circuit
US4351032A (en) * 1978-12-04 1982-09-21 General Electric Company Frequency sensing circuit
US4354249A (en) * 1980-03-24 1982-10-12 Motorola Inc. Processing unit for multiplying two mathematical quantities including at least one complex multiplier
US4313361A (en) * 1980-03-28 1982-02-02 Kawai Musical Instruments Mfg. Co., Ltd. Digital frequency follower for electronic musical instruments
IT1171334B (it) * 1981-06-25 1987-06-10 Selenia Ind Elettroniche Dispositivo per effettuare la stima della frequenza di scansione del segnale di un radar d'inseguimento a scansione conica
US4556900A (en) * 1983-05-25 1985-12-03 Rca Corporation Scaling device as for quantized B-Y signal
US5077677A (en) * 1989-06-12 1991-12-31 Westinghouse Electric Corp. Probabilistic inference gate
US5274579A (en) * 1990-01-02 1993-12-28 Motorola, Inc. Digital tone detector
US6140568A (en) * 1997-11-06 2000-10-31 Innovative Music Systems, Inc. System and method for automatically detecting a set of fundamental frequencies simultaneously present in an audio signal
CN102621382B (zh) * 2012-03-22 2013-12-11 清华大学 一种检测电力系统中电气信号频率、相位和幅值的方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1488289A (fr) * 1966-04-04 1967-07-13 Cit Alcatel Procédé et dispositif pour l'identification des fréquences par des circuits logiques

Also Published As

Publication number Publication date
FR2134004A1 (fr) 1972-12-01
CH530643A (de) 1972-11-15
DE2152687A1 (de) 1972-10-26
GB1382524A (en) 1975-02-05
US3803390A (en) 1974-04-09
DE2152687C3 (de) 1981-08-20
DE2152687B2 (de) 1980-09-18

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