FR946994A - Device generating oscillations modulated in frequency or phase by acoustic vibrations - Google Patents

Device generating oscillations modulated in frequency or phase by acoustic vibrations

Info

Publication number
FR946994A
FR946994A FR946994DA FR946994A FR 946994 A FR946994 A FR 946994A FR 946994D A FR946994D A FR 946994DA FR 946994 A FR946994 A FR 946994A
Authority
FR
France
Prior art keywords
frequency
phase
device generating
acoustic vibrations
generating oscillations
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 FR946994A publication Critical patent/FR946994A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/10—Angle modulation by means of variable impedance
    • H03C3/28—Angle modulation by means of variable impedance using variable impedance driven mechanically or acoustically
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H2/00—Networks using elements or techniques not provided for in groups H03H3/00 - H03H21/00
    • H03H2/005—Coupling circuits between transmission lines or antennas and transmitters, receivers or amplifiers
    • H03H2/006—Transmitter or amplifier output circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R19/00—Electrostatic transducers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Electrophonic Musical Instruments (AREA)
FR946994D 1946-05-23 1947-05-21 Device generating oscillations modulated in frequency or phase by acoustic vibrations Expired FR946994A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL628057X 1946-05-23

Publications (1)

Publication Number Publication Date
FR946994A true FR946994A (en) 1949-06-20

Family

ID=19788647

Family Applications (1)

Application Number Title Priority Date Filing Date
FR946994D Expired FR946994A (en) 1946-05-23 1947-05-21 Device generating oscillations modulated in frequency or phase by acoustic vibrations

Country Status (5)

Country Link
US (1) US2497605A (en)
DE (1) DE809565C (en)
FR (1) FR946994A (en)
GB (1) GB628057A (en)
NL (1) NL67619C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2917300A (en) * 1956-12-07 1959-12-15 Univ California Frequency modulating accelerometer
DE1261901B (en) * 1963-03-29 1968-02-29 Telefunken Patent Four-pole made up of resistors and capacitors with a maximum attenuation

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1615645A (en) * 1920-07-15 1927-01-25 Westinghouse Electric & Mfg Co Combined wireless sending and receiving system
GB406674A (en) * 1931-09-19 1934-02-28 Marconi Wireless Telegraph Co Improvements in or relating to modulated carrier wave transmitting systems
GB512028A (en) * 1938-02-24 1939-08-28 William Spencer Percival Improvements in or relating to thermionic valve circuits
US2418842A (en) * 1943-03-04 1947-04-15 Bell Telephone Labor Inc Scanning oscillator

Also Published As

Publication number Publication date
US2497605A (en) 1950-02-14
NL67619C (en)
GB628057A (en) 1949-08-22
DE809565C (en) 1951-07-30

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