FR29279E - Microphone perfectionné - Google Patents

Microphone perfectionné

Info

Publication number
FR29279E
FR29279E FR29279DA FR29279E FR 29279 E FR29279 E FR 29279E FR 29279D A FR29279D A FR 29279DA FR 29279 E FR29279 E FR 29279E
Authority
FR
France
Prior art keywords
microphone
advanced
advanced microphone
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
English (en)
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.)
Societe Francaise Radio Electrique
Original Assignee
Societe Francaise Radio Electrique
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 Societe Francaise Radio Electrique filed Critical Societe Francaise Radio Electrique
Application granted granted Critical
Publication of FR29279E publication Critical patent/FR29279E/fr
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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/222—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only  for microphones
    • 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
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Multimedia (AREA)
FR29279D 1924-01-30 1924-01-30 Microphone perfectionné Expired FR29279E (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR29279T 1924-01-30

Publications (1)

Publication Number Publication Date
FR29279E true FR29279E (fr) 1925-07-10

Family

ID=8667320

Family Applications (2)

Application Number Title Priority Date Filing Date
FR574642D Expired FR574642A (fr) 1924-01-30 1923-03-05 Microphone perfectionné
FR29279D Expired FR29279E (fr) 1924-01-30 1924-01-30 Microphone perfectionné

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR574642D Expired FR574642A (fr) 1924-01-30 1923-03-05 Microphone perfectionné

Country Status (1)

Country Link
FR (2) FR574642A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2922849A (en) * 1955-12-19 1960-01-26 Fukuin Denki Kabushiki Kaisha Compound electric speaker

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5526730A (en) * 1978-08-15 1980-02-26 Sony Corp Electroacoustic converter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2922849A (en) * 1955-12-19 1960-01-26 Fukuin Denki Kabushiki Kaisha Compound electric speaker

Also Published As

Publication number Publication date
FR574642A (fr) 1924-07-16

Similar Documents

Publication Publication Date Title
FR29279E (fr) Microphone perfectionné
FR29290E (fr) Delentoir
FR29650E (fr) Turbomoteur
FR575868A (fr) Casseur-décortiqueur perfectionné
FR589119A (fr) Plansichter perfectionné
AT105733B (de) Mikrophon.
FR29638E (fr) Raidisseur-tendeur
FR29771E (fr) Pulsomètre
FI10040A (fi) Automobilväxellåda
FI10065A (fi) Stöpselanordning
FI10068A (fi) Kvasthållare
FI10078A (fi) Multipelsmältsäkring
FI10091A (fi) Explosionsmotor
FI10093A (fi) Tryckreduceringsventil
FI10109A (fi) Fiskbete
FI10110A (fi) Motorsläde
FI10113A (fi) Stockvagn
FI10121A (fi) Biljettfodral
FI10122A (fi) Störpinne
FI10133A (fi) Bakugn
FI10142A (fi) Diskapparat
FI10146A (fi) Styrbar dikesplog
FI10153A (fi) Reglerbar talja
FI10157A (fi) Delvis utbalanserad roterande rosthacka
FI10173A (fi) Kraftvagn