BE430974A - - Google Patents

Info

Publication number
BE430974A
BE430974A BE430974DA BE430974A BE 430974 A BE430974 A BE 430974A BE 430974D A BE430974D A BE 430974DA BE 430974 A BE430974 A BE 430974A
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 BE430974A publication Critical patent/BE430974A/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)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
BE430974D 1937-11-10 BE430974A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE207880X 1937-11-10

Publications (1)

Publication Number Publication Date
BE430974A true BE430974A (de)

Family

ID=5793936

Family Applications (1)

Application Number Title Priority Date Filing Date
BE430974D BE430974A (de) 1937-11-10

Country Status (5)

Country Link
US (1) US2210477A (de)
BE (1) BE430974A (de)
CH (1) CH207880A (de)
GB (1) GB508458A (de)
NL (1) NL52281C (de)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2689016A (en) * 1953-04-14 1954-09-14 Henry C Lang Sound reproducing system
US3043912A (en) * 1957-07-10 1962-07-10 Laney William J De Intercom for automobiles
US3065816A (en) * 1958-03-10 1962-11-27 Rangertone Electronics Corp Stereophonic sound distributor
US3080012A (en) * 1958-09-26 1963-03-05 Columbia Broadcasting Syst Inc Stereophonic loudspeaker arrays
US3045064A (en) * 1959-06-01 1962-07-17 Margaret H Sellers Apparatus for transmitting sound from a baseball field
NL267133A (de) * 1960-07-15
US3557324A (en) * 1967-04-28 1971-01-19 Yoshiro Nakamatsu Television receiver having means for causing sound to emanate from picture plane
US3679023A (en) * 1968-08-06 1972-07-25 John C Rankin Loudspeaker enclosure
US3642091A (en) * 1968-10-09 1972-02-15 Pioneer Electronic Corp Underground acoustic device
US3590941A (en) * 1969-10-10 1971-07-06 Arvin Ind Inc Speaker enclosure
US3674108A (en) * 1970-10-29 1972-07-04 David L Beatty Outdoor speaker enclosure
US3964571A (en) * 1975-04-01 1976-06-22 Peter Garland Snell Acoustic system
US5173942A (en) * 1986-09-13 1992-12-22 Sharp Kabushiki Kaisha Audio system operable in directional and non-directional modes
JPH0724439B2 (ja) * 1986-09-13 1995-03-15 シャープ株式会社 オ−デイオ装置
US4949386A (en) * 1988-05-23 1990-08-14 Hill Amel L Speaker system
US5033577A (en) * 1988-12-06 1991-07-23 Bose Corporation Room sound reproducing
US8873788B1 (en) * 2010-08-30 2014-10-28 Jeffery James Coombs In-ground audio sub woofer and method of installation
US10240796B1 (en) * 2016-05-20 2019-03-26 Beckwell Companies, LLC Fire pit insert assembly
US10499128B2 (en) * 2018-04-20 2019-12-03 Sonos, Inc. Playback devices having waveguides with drainage features
KR102507425B1 (ko) * 2018-10-23 2023-03-09 현대자동차주식회사 차량용 스피커장치
EP4030781A4 (de) * 2019-09-13 2022-11-09 Panasonic Intellectual Property Management Co., Ltd. Akustische linse und lautsprechersystem

Also Published As

Publication number Publication date
US2210477A (en) 1940-08-06
GB508458A (en) 1939-06-30
CH207880A (de) 1939-12-15
NL52281C (de)

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