FR618595A - Improvements to sound reproduction systems - Google Patents

Improvements to sound reproduction systems

Info

Publication number
FR618595A
FR618595A FR618595DA FR618595A FR 618595 A FR618595 A FR 618595A FR 618595D A FR618595D A FR 618595DA FR 618595 A FR618595 A FR 618595A
Authority
FR
France
Prior art keywords
sound reproduction
reproduction systems
systems
sound
reproduction
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 FR618595A publication Critical patent/FR618595A/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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H04R7/06—Plane diaphragms comprising a plurality of sections or layers
    • H04R7/08—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers separated by air or other fluid

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR618595D 1925-11-16 1925-11-16 Improvements to sound reproduction systems Expired FR618595A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR618595T 1925-11-16

Publications (1)

Publication Number Publication Date
FR618595A true FR618595A (en) 1927-03-11

Family

ID=8983089

Family Applications (1)

Application Number Title Priority Date Filing Date
FR618595D Expired FR618595A (en) 1925-11-16 1925-11-16 Improvements to sound reproduction systems

Country Status (2)

Country Link
BE (1) BE338172A (en)
FR (1) FR618595A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2363853A1 (en) * 1976-09-01 1978-03-31 Seiko Instr & Electronics ELECTRO-ACOUSTIC TRANSDUCER
EP0146933A3 (en) * 1983-12-23 1986-10-01 Nippondenso Co., Ltd. Sound generating apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2363853A1 (en) * 1976-09-01 1978-03-31 Seiko Instr & Electronics ELECTRO-ACOUSTIC TRANSDUCER
EP0146933A3 (en) * 1983-12-23 1986-10-01 Nippondenso Co., Ltd. Sound generating apparatus

Also Published As

Publication number Publication date
BE338172A (en)

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