FR922167A - Improvements in electrical devices and assemblies for sound reproduction - Google Patents

Improvements in electrical devices and assemblies for sound reproduction

Info

Publication number
FR922167A
FR922167A FR922167DA FR922167A FR 922167 A FR922167 A FR 922167A FR 922167D A FR922167D A FR 922167DA FR 922167 A FR922167 A FR 922167A
Authority
FR
France
Prior art keywords
assemblies
electrical devices
sound reproduction
reproduction
sound
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)
Inventor
Pierre-Georges-Rene Haas
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 filed Critical
Application granted granted Critical
Publication of FR922167A publication Critical patent/FR922167A/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
    • H04R19/00—Electrostatic transducers
    • H04R19/04—Microphones

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR922167D 1945-12-18 1945-12-18 Improvements in electrical devices and assemblies for sound reproduction Expired FR922167A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR922167T 1945-12-18

Publications (1)

Publication Number Publication Date
FR922167A true FR922167A (en) 1947-06-02

Family

ID=9437830

Family Applications (1)

Application Number Title Priority Date Filing Date
FR922167D Expired FR922167A (en) 1945-12-18 1945-12-18 Improvements in electrical devices and assemblies for sound reproduction

Country Status (1)

Country Link
FR (1) FR922167A (en)

Similar Documents

Publication Publication Date Title
NL171847B (en) SOUND RECORDING AND PLAYBACK DEVICE.
FR1056304A (en) Improvements to sound reproducing devices
FR922167A (en) Improvements in electrical devices and assemblies for sound reproduction
FR1079287A (en) Improvements in insulating materials for electrical devices
FR913655A (en) Improvements to electrical sound reproducing devices such as radio receivers and phonographs
FR932782A (en) Improvements to evaporators and similar devices
FR924132A (en) Improvement in sound reproduction devices
FR54541E (en) Improvements to electrical sound reproducing devices such as radio receivers and phonographs
FR934385A (en) Improvements to indicating and recording devices
FR935457A (en) Improvements to electric players for sound reproduction devices
FR944299A (en) Improvements in methods and devices for pneumatic micrometry
FR927244A (en) Sound reproducing apparatus recorded on tapes
FR1041547A (en) Loudspeaker enhancements
FR1062228A (en) Improvements to machines and electrical devices
FR54083E (en) Improvements to electrodynamic players for recorders and sound reproducers
CA429703A (en) Sound recording and reproducing device
CA429964A (en) Sound reproducing device
CA426439A (en) Sound recording and reproducing apparatus
AU130741B2 (en) Improvements in or relating to electrical sound reproducing and/or recording devices
AU130708B2 (en) Improvements in audio frequency amplifiers
FR943320A (en) Improvement in magnetic sound recording and reproduction devices
FR909225A (en) Loudspeaker enhancements
CA430830A (en) Sound recording and reproduction
FR909149A (en) Improvements to sound recording and reproducing devices
AT193628B (en) Smallest sound recording and playback device