FR619115A - Improvements to devices intended to transform electrical energy into sound and vice versa - Google Patents

Improvements to devices intended to transform electrical energy into sound and vice versa

Info

Publication number
FR619115A
FR619115A FR619115DA FR619115A FR 619115 A FR619115 A FR 619115A FR 619115D A FR619115D A FR 619115DA FR 619115 A FR619115 A FR 619115A
Authority
FR
France
Prior art keywords
sound
electrical energy
vice versa
devices intended
transform electrical
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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 Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR619115A publication Critical patent/FR619115A/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)
FR619115D 1925-06-12 1926-06-02 Improvements to devices intended to transform electrical energy into sound and vice versa Expired FR619115A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1655283X 1925-06-12

Publications (1)

Publication Number Publication Date
FR619115A true FR619115A (en) 1927-03-26

Family

ID=10887761

Family Applications (1)

Application Number Title Priority Date Filing Date
FR619115D Expired FR619115A (en) 1925-06-12 1926-06-02 Improvements to devices intended to transform electrical energy into sound and vice versa

Country Status (2)

Country Link
US (1) US1655283A (en)
FR (1) FR619115A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4139742A (en) * 1977-02-02 1979-02-13 Walker Jay F Cutaneous communication device

Also Published As

Publication number Publication date
US1655283A (en) 1928-01-03

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