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)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
NL53688D 1936-02-18 NL53688C (fr)

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 (fr)

Family

ID=25944490

Family Applications (1)

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

Country Status (4)

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

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
US8724827B2 (en) * 2007-05-04 2014-05-13 Bose Corporation System and method for directionally radiating sound
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

Also Published As

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

Similar Documents

Publication Publication Date Title
BE415900A (fr)
BE415974A (fr)
NL54627C (fr)
SE95825C1 (fr)
SE108717C1 (fr)
SE102648C1 (fr)
NL81018B (fr)
BE415752A (fr)
NL51733C (fr)
NL49760C (fr)
NL47554C (fr)
NL46428C (fr)
BE415731A (fr)
BE424950A (fr)
BE424581A (fr)
BE422389A (fr)
BE421180A (fr)
BE421175A (fr)
BE416312A (fr)
BE416290A (fr)
BE416271A (fr)
BE415761A (fr)
BE416030A (fr)
BE415571A (fr)
BE415619A (fr)