FR711686A - Electro-magnetic sound reproduction device - Google Patents

Electro-magnetic sound reproduction device

Info

Publication number
FR711686A
FR711686A FR711686DA FR711686A FR 711686 A FR711686 A FR 711686A FR 711686D A FR711686D A FR 711686DA FR 711686 A FR711686 A FR 711686A
Authority
FR
France
Prior art keywords
electro
reproduction device
sound reproduction
magnetic sound
magnetic
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.)
HERBELOT ET VORMS ETS
Original Assignee
HERBELOT ET VORMS ETS
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 HERBELOT ET VORMS ETS filed Critical HERBELOT ET VORMS ETS
Application granted granted Critical
Publication of FR711686A publication Critical patent/FR711686A/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
    • H04R11/00—Transducers of moving-armature or moving-core type

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR711686D 1930-05-28 1930-05-28 Electro-magnetic sound reproduction device Expired FR711686A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR711686T 1930-05-28

Publications (1)

Publication Number Publication Date
FR711686A true FR711686A (en) 1931-09-15

Family

ID=9076772

Family Applications (1)

Application Number Title Priority Date Filing Date
FR711686D Expired FR711686A (en) 1930-05-28 1930-05-28 Electro-magnetic sound reproduction device

Country Status (1)

Country Link
FR (1) FR711686A (en)

Similar Documents

Publication Publication Date Title
FR638286A (en) Sound reproducer
FR725727A (en) Sound guiding device for loudspeakers
FR711686A (en) Electro-magnetic sound reproduction device
FR712588A (en) Device for receiving and reproducing acoustic oscillations
FR705902A (en) Sound reproduction system
FR681819A (en) Device for sound reproduction
FR673659A (en) Sound reproducer
FR707711A (en) Sound sounding device
FR690133A (en) Orthophone device for sound emissions
FR700984A (en) Optical device for sound reproduction
FR645648A (en) Sound recording device
FR715456A (en) Advanced sound reproducer
FR716439A (en) Sound recording device
CH147847A (en) Electromagnetic sound reproducing device.
FR646684A (en) Sound reproduction
FR711176A (en) Brake adjustment device
CA302106A (en) Direct acting sound reproducing device
FR694866A (en) Device for sound and speaking cinematography
FR716610A (en) Microphone device
CA297783A (en) Sound reproducing device
CA301304A (en) Sound reproducing device
CA302190A (en) Sound reproducing device
FR728270A (en) Sound clarifier
FR665534A (en) Sound reproducer
FR705696A (en) Improvement in the centering device of electrodynamic loudspeakers