FR550978A - Machine parlante à transmission électrique des sons - Google Patents

Machine parlante à transmission électrique des sons

Info

Publication number
FR550978A
FR550978A FR550978DA FR550978A FR 550978 A FR550978 A FR 550978A FR 550978D A FR550978D A FR 550978DA FR 550978 A FR550978 A FR 550978A
Authority
FR
France
Prior art keywords
sound
electric transmission
talking machine
talking
machine
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
English (en)
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.)
TELEGRAPHIE GmbH
Original Assignee
TELEGRAPHIE GmbH
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 TELEGRAPHIE GmbH filed Critical TELEGRAPHIE GmbH
Application granted granted Critical
Publication of FR550978A publication Critical patent/FR550978A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
    • G11B3/001—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor with vibrating mechanical coupling means between pick-up element and sound producing element
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/08—Gramophone pick-ups using a stylus; Recorders using a stylus

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Holding Or Fastening Of Disk On Rotational Shaft (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
FR550978D 1922-05-06 1922-05-04 Machine parlante à transmission électrique des sons Expired FR550978A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB12847/22A GB195879A (en) 1922-05-06 1922-05-06 Improvements in electro-magnetic sound-boxes for phonographs and the like

Publications (1)

Publication Number Publication Date
FR550978A true FR550978A (fr) 1923-03-24

Family

ID=10012210

Family Applications (1)

Application Number Title Priority Date Filing Date
FR550978D Expired FR550978A (fr) 1922-05-06 1922-05-04 Machine parlante à transmission électrique des sons

Country Status (5)

Country Link
US (1) US1522657A (fr)
CH (1) CH100986A (fr)
FR (1) FR550978A (fr)
GB (1) GB195879A (fr)
NL (1) NL11072C (fr)

Also Published As

Publication number Publication date
CH100986A (de) 1923-08-16
GB195879A (en) 1923-04-12
NL11072C (fr)
US1522657A (en) 1925-01-13

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