BE414489A - - Google Patents

Info

Publication number
BE414489A
BE414489A BE414489DA BE414489A BE 414489 A BE414489 A BE 414489A BE 414489D A BE414489D A BE 414489DA BE 414489 A BE414489 A BE 414489A
Authority
BE
Belgium
Application number
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.)
Publication of BE414489A publication Critical patent/BE414489A/xx

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)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Building Environments (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
BE414489D 1935-03-23 BE414489A (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12551A US2020166A (en) 1935-03-23 1935-03-23 Sound reproducing apparatus

Publications (1)

Publication Number Publication Date
BE414489A true BE414489A (zh)

Family

ID=21755497

Family Applications (1)

Application Number Title Priority Date Filing Date
BE414489D BE414489A (zh) 1935-03-23

Country Status (7)

Country Link
US (1) US2020166A (zh)
AT (1) AT149923B (zh)
BE (1) BE414489A (zh)
CH (1) CH191887A (zh)
FR (1) FR804770A (zh)
GB (1) GB459003A (zh)
NL (1) NL44803C (zh)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE970228C (de) * 1937-08-25 1958-08-28 Ing Karl Nowak Schallstrahler mit raeumlich wirkender Wiedergabe
US2423045A (en) * 1943-09-04 1947-06-24 Kellogg M W Co Liquid phase catalytic reactions of hydrocarbons
US2888090A (en) * 1949-10-14 1959-05-26 Telefunken Gmbh Loudspeaker arrangement
US2816619A (en) * 1951-12-04 1957-12-17 John E Karlson Acoustic transducers
US2787332A (en) * 1952-09-06 1957-04-02 Norman C Fulmer Loud-speaker system
DE1098542B (de) * 1954-09-18 1961-02-02 Dr Emil Podszus Lautsprecher aus mehreren Elementen
GB793193A (en) * 1955-02-17 1958-04-09 Pye Ltd An improved acoustic enclosure for loudspeakers
US2858899A (en) * 1956-07-03 1958-11-04 Lopez-Henriquez Miguel High fidelity speaker enclosure system
GB829214A (en) * 1957-01-11 1960-03-02 Douglas Arthur Lyons Improvements in loud speaker systems
DE8717749U1 (de) * 1986-12-02 1990-01-11 Spors, Wolfgang, 2150 Buxtehude Lautsprecher-Anordnung
GR1000561B (el) * 1988-06-01 1992-08-26 Wolfgang Spors Διαταξη μεγαφωνων.
USD772810S1 (en) * 2013-11-08 2016-11-29 Rusty Chisel, LLC Radio charging station

Also Published As

Publication number Publication date
GB459003A (en) 1936-12-31
NL44803C (zh)
CH191887A (de) 1937-07-15
AT149923B (de) 1937-06-10
US2020166A (en) 1935-11-05
FR804770A (fr) 1936-11-02

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