FR1212914A - Frequency detector - Google Patents

Frequency detector

Info

Publication number
FR1212914A
FR1212914A FR1212914DA FR1212914A FR 1212914 A FR1212914 A FR 1212914A FR 1212914D A FR1212914D A FR 1212914DA FR 1212914 A FR1212914 A FR 1212914A
Authority
FR
France
Prior art keywords
frequency detector
detector
frequency
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
Other languages
French (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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR1212914A publication Critical patent/FR1212914A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/08—Measuring resistance by measuring both voltage and current
    • G01R27/10—Measuring resistance by measuring both voltage and current using two-coil or crossed-coil instruments forming quotient
    • G01R27/12—Measuring resistance by measuring both voltage and current using two-coil or crossed-coil instruments forming quotient using hand generators, e.g. meggers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Signal Processing (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Computational Linguistics (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Measuring Frequencies, Analyzing Spectra (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
FR1212914D 1957-10-14 1958-10-13 Frequency detector Expired FR1212914A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL221597A NL97484C (en) 1957-10-14 1957-10-14 Frequency detector for determining the characteristic frequency of a vibration occurring within a certain conversation band

Publications (1)

Publication Number Publication Date
FR1212914A true FR1212914A (en) 1960-03-28

Family

ID=1838804

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1212914D Expired FR1212914A (en) 1957-10-14 1958-10-13 Frequency detector

Country Status (6)

Country Link
US (1) US2995707A (en)
JP (1) JPS368093B1 (en)
DE (1) DE1151284B (en)
FR (1) FR1212914A (en)
GB (1) GB844561A (en)
NL (1) NL97484C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5129860A (en) * 1974-09-06 1976-03-13 Matsushita Electric Ind Co Ltd Fmmam henkanki
GB2187581B (en) * 1985-04-10 1989-06-21 Matsushita Electric Ind Co Ltd Control circuit
TWI672004B (en) * 2018-12-11 2019-09-11 矽統科技股份有限公司 Frequency detector

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2896161A (en) * 1942-06-30 1959-07-21 Bessie E Fox Measuring system
US2418284A (en) * 1943-04-24 1947-04-01 Bendix Aviat Corp Differential voltage measuring circuit
US2541067A (en) * 1944-11-30 1951-02-13 Sperry Corp Frequency responsive device
US2576249A (en) * 1947-08-28 1951-11-27 Bell Telephone Labor Inc Level ratio measuring system
US2711516A (en) * 1949-10-29 1955-06-21 Rca Corp Frequency discriminatory systems
GB788565A (en) * 1954-08-11 1958-01-02 Gen Electric Improvements in and relating to frequency response determining apparatus
US2857465A (en) * 1955-11-21 1958-10-21 Bell Telephone Labor Inc Vocoder transmission system

Also Published As

Publication number Publication date
US2995707A (en) 1961-08-08
JPS368093B1 (en) 1961-06-20
NL97484C (en) 1961-03-15
GB844561A (en) 1960-08-17
DE1151284B (en) 1963-07-11

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