FR686786A - Device for the reproduction of sounds comprising a membrane with a large surface area and a screen - Google Patents

Device for the reproduction of sounds comprising a membrane with a large surface area and a screen

Info

Publication number
FR686786A
FR686786A FR686786DA FR686786A FR 686786 A FR686786 A FR 686786A FR 686786D A FR686786D A FR 686786DA FR 686786 A FR686786 A FR 686786A
Authority
FR
France
Prior art keywords
sounds
reproduction
membrane
screen
surface area
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
Jacobus Cornelis Douw
Johan Willem Vlielander-Hein
Christiaan Henri Henny
Max Adolf Henny
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 FR686786A publication Critical patent/FR686786A/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
FR686786D 1929-07-26 1929-12-17 Device for the reproduction of sounds comprising a membrane with a large surface area and a screen Expired FR686786A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL339127X 1929-07-26

Publications (1)

Publication Number Publication Date
FR686786A true FR686786A (en) 1930-07-30

Family

ID=19784637

Family Applications (1)

Application Number Title Priority Date Filing Date
FR686786D Expired FR686786A (en) 1929-07-26 1929-12-17 Device for the reproduction of sounds comprising a membrane with a large surface area and a screen

Country Status (5)

Country Link
US (1) US1952539A (en)
BE (1) BE366478A (en)
DE (1) DE588742C (en)
FR (1) FR686786A (en)
GB (1) GB339127A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2567829A (en) * 1947-03-06 1951-09-11 Suthann Robert Andree Combined cabinet and chassis for mounting electrical components
US8631897B2 (en) 2008-06-27 2014-01-21 Rgb Systems, Inc. Ceiling loudspeaker system
DE102008058028A1 (en) * 2008-11-18 2010-05-20 K+H Vertriebs- Und Entwicklungsgesellschaft Mbh Speaker unit
CA2838856A1 (en) * 2011-06-14 2012-12-20 Rgb Systems, Inc. Ceiling loudspeaker system
US11277684B2 (en) * 2019-01-17 2022-03-15 Onkyo Corporation Diffuser

Also Published As

Publication number Publication date
US1952539A (en) 1934-03-27
BE366478A (en)
DE588742C (en) 1933-11-25
GB339127A (en) 1930-12-04

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