NL53688C - - Google Patents

Info

Publication number
NL53688C
NL53688C NL53688DA NL53688C NL 53688 C NL53688 C NL 53688C NL 53688D A NL53688D A NL 53688DA NL 53688 C NL53688 C NL 53688C
Authority
NL
Netherlands
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 NL53688C publication Critical patent/NL53688C/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
    • H04R27/00—Public address systems
    • 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
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/403—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers loud-speakers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
NL53688D 1936-02-18 NL53688C (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1936T0046445 DE690437C (de) 1936-02-18 1936-02-18 Schalles in einem bestimmten Raumteil
DE486038X 1936-07-04

Publications (1)

Publication Number Publication Date
NL53688C true NL53688C (zh)

Family

ID=25944490

Family Applications (1)

Application Number Title Priority Date Filing Date
NL53688D NL53688C (zh) 1936-02-18

Country Status (4)

Country Link
US (1) US2203715A (zh)
DE (1) DE690437C (zh)
GB (1) GB486038A (zh)
NL (1) NL53688C (zh)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2544742A (en) * 1946-12-31 1951-03-13 Vibra Sonic Inc Cubic loud-speaker cabinet
DE970013C (de) * 1950-08-29 1958-08-14 Siemens Ag Einrichtung fuer Lautsprecher
DE969536C (de) * 1952-10-08 1958-06-12 Saba Gmbh Anordnung fuer Schallstrahler
US3526718A (en) * 1967-04-17 1970-09-01 David L Beatty Portable speaker assembly for large areas
US4596034A (en) * 1981-01-02 1986-06-17 Moncrieff J Peter Sound reproduction system and method
US4554531A (en) * 1982-12-27 1985-11-19 Biersach James E Omnidirectional siren
US4882760A (en) * 1983-12-02 1989-11-21 Yee Raymond M Sound reproduction system
FR2628924B1 (fr) * 1988-03-15 1991-08-30 Baranes Roger Enceintes acoustiques a directivites optimums adaptables en diffuseurs de son a cones deflecteurs
US4953223A (en) * 1988-09-08 1990-08-28 Householder George G Speaker mounting system
GB2269960B (en) * 1992-08-20 1996-03-27 Canon Audio Ltd Sound output system
WO1999022549A1 (fr) * 1997-10-23 1999-05-06 Matsushita Electric Industrial Co., Ltd. Systeme d'adressage public
US7688992B2 (en) * 2005-09-12 2010-03-30 Richard Aylward Seat electroacoustical transducing
US20080273722A1 (en) * 2007-05-04 2008-11-06 Aylward J Richard Directionally radiating sound in a vehicle
US8325936B2 (en) * 2007-05-04 2012-12-04 Bose Corporation Directionally radiating sound in a vehicle
US8724827B2 (en) * 2007-05-04 2014-05-13 Bose Corporation System and method for directionally radiating sound

Also Published As

Publication number Publication date
DE690437C (de) 1940-04-25
US2203715A (en) 1940-06-11
GB486038A (en) 1938-05-30

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