NL97484C - Frequentiedetector voor het bepalen van de karakteristieke frequentie van een binnen een een zekere gespreksband optredende trilling - Google Patents

Frequentiedetector voor het bepalen van de karakteristieke frequentie van een binnen een een zekere gespreksband optredende trilling

Info

Publication number
NL97484C
NL97484C NL221597A NL221597A NL97484C NL 97484 C NL97484 C NL 97484C NL 221597 A NL221597 A NL 221597A NL 221597 A NL221597 A NL 221597A NL 97484 C NL97484 C NL 97484C
Authority
NL
Netherlands
Prior art keywords
frequency
amplitude
output
voltage
ratio
Prior art date
Application number
NL221597A
Other languages
English (en)
Original Assignee
Philips 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 Nv filed Critical Philips Nv
Priority to NL221597A priority Critical patent/NL97484C/nl
Priority to US764073A priority patent/US2995707A/en
Priority to DEN15693A priority patent/DE1151284B/de
Priority to GB32423/58A priority patent/GB844561A/en
Priority to JP2906258A priority patent/JPS368093B1/ja
Priority to FR1212914D priority patent/FR1212914A/fr
Application granted granted Critical
Publication of NL97484C publication Critical patent/NL97484C/nl

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)
NL221597A 1957-10-14 1957-10-14 Frequentiedetector voor het bepalen van de karakteristieke frequentie van een binnen een een zekere gespreksband optredende trilling NL97484C (nl)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NL221597A NL97484C (nl) 1957-10-14 1957-10-14 Frequentiedetector voor het bepalen van de karakteristieke frequentie van een binnen een een zekere gespreksband optredende trilling
US764073A US2995707A (en) 1957-10-14 1958-09-29 Frequency detector
DEN15693A DE1151284B (de) 1957-10-14 1958-10-10 Frequenzanalysator zum Ermitteln des Verlaufes einer in einem Sprechfrequenz-teilband liegenden kennzeichnenden Sprechfrequenz
GB32423/58A GB844561A (en) 1957-10-14 1958-10-10 Improvements in or relating to frequency detectors
JP2906258A JPS368093B1 (nl) 1957-10-14 1958-10-11
FR1212914D FR1212914A (fr) 1957-10-14 1958-10-13 Détecteur de fréquence

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL221597A NL97484C (nl) 1957-10-14 1957-10-14 Frequentiedetector voor het bepalen van de karakteristieke frequentie van een binnen een een zekere gespreksband optredende trilling

Publications (1)

Publication Number Publication Date
NL97484C true NL97484C (nl) 1961-03-15

Family

ID=1838804

Family Applications (1)

Application Number Title Priority Date Filing Date
NL221597A NL97484C (nl) 1957-10-14 1957-10-14 Frequentiedetector voor het bepalen van de karakteristieke frequentie van een binnen een een zekere gespreksband optredende trilling

Country Status (6)

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

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
DE3690169T1 (nl) * 1985-04-10 1987-06-04
TWI672004B (zh) * 2018-12-11 2019-09-11 矽統科技股份有限公司 頻率偵測器

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
FR1212914A (fr) 1960-03-28
GB844561A (en) 1960-08-17
US2995707A (en) 1961-08-08
JPS368093B1 (nl) 1961-06-20
DE1151284B (de) 1963-07-11

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