FR794451A - Improvements to sound reproduction systems - Google Patents

Improvements to sound reproduction systems

Info

Publication number
FR794451A
FR794451A FR794451DA FR794451A FR 794451 A FR794451 A FR 794451A FR 794451D A FR794451D A FR 794451DA FR 794451 A FR794451 A FR 794451A
Authority
FR
France
Prior art keywords
sound reproduction
reproduction systems
systems
sound
reproduction
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.)
Electrical Research Products Inc
Original Assignee
Electrical Research Products Inc
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 Electrical Research Products Inc filed Critical Electrical Research Products Inc
Application granted granted Critical
Publication of FR794451A publication Critical patent/FR794451A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/12—Gramophone pick-ups using a stylus; Recorders using a stylus
    • H04R9/16—Gramophone pick-ups using a stylus; Recorders using a stylus signals recorded or played back by vibration of a stylus in two orthogonal directions simultaneously
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/12—Gramophone pick-ups using a stylus; Recorders using a stylus

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Magnetic Heads (AREA)
  • Stereophonic System (AREA)
  • Holding Or Fastening Of Disk On Rotational Shaft (AREA)
FR794451D 1934-09-05 1935-08-29 Improvements to sound reproduction systems Expired FR794451A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US742761A US2105916A (en) 1934-09-05 1934-09-05 Sound reproducing system

Publications (1)

Publication Number Publication Date
FR794451A true FR794451A (en) 1936-02-18

Family

ID=24986098

Family Applications (1)

Application Number Title Priority Date Filing Date
FR794451D Expired FR794451A (en) 1934-09-05 1935-08-29 Improvements to sound reproduction systems

Country Status (4)

Country Link
US (1) US2105916A (en)
DE (1) DE675787C (en)
FR (1) FR794451A (en)
GB (3) GB448974A (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2700068A (en) * 1948-11-16 1955-01-18 Muller Egon Nicolas Pulse multiplex system
DE1065188B (en) * 1955-09-23
DE1031536B (en) * 1956-03-16 1958-06-04 Teldec Telefunken Decca Mechanical-electrical converter for the generation or scanning of a grooved sound track
US3053943A (en) * 1957-07-12 1962-09-11 Columbia Broadcasting Syst Inc Phonograph record cutter
DE1073762B (en) * 1957-07-15 1960-01-21 Deutsche Grammophon Gesellschaft mit beschränkter Haftung, Hamburg Pickup based on the piezoelectric principle for simultaneous scanning of side and subscript writing
BE571819A (en) * 1957-10-08
NL224776A (en) * 1957-12-10
DE1135675B (en) * 1958-01-18 1962-08-30 Neumann Georg Electrodynamic pickup or cutting box for scanning or cutting a groove-shaped sound track
DE1138560B (en) * 1958-03-05 1962-10-25 Fonofilm Ind As Cutting box for recording two signals in a groove of a sound carrier
US3013125A (en) * 1958-05-16 1961-12-12 Columbia Broadcasting Syst Inc Stereophonic recording
NL105975C (en) * 1958-05-27
DE1102429B (en) * 1959-01-10 1961-03-16 Karl Braun Method, circuit arrangement and pickup head for switching off or reducing crosstalk interference
US3049040A (en) * 1959-01-26 1962-08-14 Donald J Leslie Apparatus for minimizing beat effects
GB950587A (en) * 1959-06-13 1964-02-26 Emi Ltd Improvements in or relating to gramophone pick-ups
US4160268A (en) * 1977-03-31 1979-07-03 Victor Company Of Japan, Ltd. Signal pickup device with tracking control and jitter compensation for a video disc

Also Published As

Publication number Publication date
US2105916A (en) 1938-01-18
GB448974A (en) 1936-06-18
DE675787C (en) 1939-05-17
GB448975A (en) 1936-06-18
GB448973A (en) 1936-06-18

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