FR618037A - Improvements to devices transmitting and reproducing sound - Google Patents

Improvements to devices transmitting and reproducing sound

Info

Publication number
FR618037A
FR618037A FR618037DA FR618037A FR 618037 A FR618037 A FR 618037A FR 618037D A FR618037D A FR 618037DA FR 618037 A FR618037 A FR 618037A
Authority
FR
France
Prior art keywords
reproducing sound
devices transmitting
transmitting
devices
reproducing
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
Sidney George Brown
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 FR618037A publication Critical patent/FR618037A/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)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
FR618037D 1925-09-19 1926-06-22 Improvements to devices transmitting and reproducing sound Expired FR618037A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB23440/25A GB262869A (en) 1925-09-19 1925-09-19 Improvements in and relating to apparatus for transmitting or reproducing sound

Publications (1)

Publication Number Publication Date
FR618037A true FR618037A (en) 1927-03-02

Family

ID=10195656

Family Applications (1)

Application Number Title Priority Date Filing Date
FR618037D Expired FR618037A (en) 1925-09-19 1926-06-22 Improvements to devices transmitting and reproducing sound

Country Status (3)

Country Link
US (1) US1639588A (en)
FR (1) FR618037A (en)
GB (1) GB262869A (en)

Also Published As

Publication number Publication date
GB262869A (en) 1926-12-20
US1639588A (en) 1927-08-16

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