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

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 (enrdf_load_html_response)

Family

ID=21755497

Family Applications (1)

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

Country Status (7)

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

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
WO1988004514A1 (en) * 1986-12-02 1988-06-16 Wolfgang Spors Loudspeaker installation
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
CH191887A (de) 1937-07-15
GB459003A (en) 1936-12-31
US2020166A (en) 1935-11-05
NL44803C (enrdf_load_html_response)
FR804770A (fr) 1936-11-02
AT149923B (de) 1937-06-10

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