FR577680A - Improvements to acoustic devices - Google Patents

Improvements to acoustic devices

Info

Publication number
FR577680A
FR577680A FR577680DA FR577680A FR 577680 A FR577680 A FR 577680A FR 577680D A FR577680D A FR 577680DA FR 577680 A FR577680 A FR 577680A
Authority
FR
France
Prior art keywords
acoustic devices
acoustic
devices
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.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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 Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Application granted granted Critical
Publication of FR577680A publication Critical patent/FR577680A/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Electromagnetism (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
FR577680D 1923-11-30 1924-02-22 Improvements to acoustic devices Expired FR577680A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5577/25A GB231798A (en) 1923-11-30 1923-11-30 Improvements in acoustic devices

Publications (1)

Publication Number Publication Date
FR577680A true FR577680A (en) 1924-08-09

Family

ID=9798721

Family Applications (3)

Application Number Title Priority Date Filing Date
FR577680D Expired FR577680A (en) 1923-11-30 1924-02-22 Improvements to acoustic devices
FR29525D Expired FR29525E (en) 1923-11-30 1924-10-09 Improvements to acoustic devices
FR29528D Expired FR29528E (en) 1923-11-30 1924-10-10 Improvements to acoustic devices

Family Applications After (2)

Application Number Title Priority Date Filing Date
FR29525D Expired FR29525E (en) 1923-11-30 1924-10-09 Improvements to acoustic devices
FR29528D Expired FR29528E (en) 1923-11-30 1924-10-10 Improvements to acoustic devices

Country Status (6)

Country Link
US (2) US1778308A (en)
CH (1) CH109921A (en)
DE (2) DE533263C (en)
FR (3) FR577680A (en)
GB (2) GB231798A (en)
NL (1) NL25188C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE969535C (en) * 1942-04-14 1958-06-12 Siemens Ag Oscillating system with a membrane made of polyvinyl chloride film
US2826259A (en) * 1952-08-04 1958-03-11 Arthur W Page Concussion protection for loudspeakers
GB2359440A (en) * 2000-02-17 2001-08-22 Goodmans Loudspeakers Ltd Stiffening flange for a conical loudspeaker diaphragm

Also Published As

Publication number Publication date
CH109921A (en) 1925-05-01
GB231798A (en) 1925-03-30
FR29525E (en) 1925-08-22
US1778308A (en) 1930-10-14
DE533263C (en) 1931-09-10
FR29528E (en) 1925-08-22
NL25188C (en) 1931-10-15
GB240596A (en) 1925-10-08
US1926888A (en) 1933-09-12
DE517737C (en) 1931-02-09

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