GB459003A - Sound reproducing apparatus - Google Patents

Sound reproducing apparatus

Info

Publication number
GB459003A
GB459003A GB35579/35A GB3557935A GB459003A GB 459003 A GB459003 A GB 459003A GB 35579/35 A GB35579/35 A GB 35579/35A GB 3557935 A GB3557935 A GB 3557935A GB 459003 A GB459003 A GB 459003A
Authority
GB
United Kingdom
Prior art keywords
sound
cavity
rear wall
reproducing device
deflector
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB35579/35A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BAE Systems Aerospace Inc
Original Assignee
Hazeltine Corp
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.)
Filing date
Publication date
Application filed by Hazeltine Corp filed Critical Hazeltine Corp
Publication of GB459003A publication Critical patent/GB459003A/en
Expired legal-status Critical Current

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)

Abstract

459,003. Sound-directing appliances. HAZELTINE CORPORATION, 15, Exchange Place, Jersey City, New Jersey, U.S.A.- (Assignees of Swinyard, W. 0.; 4220, 214th Place, Bayside, New York, U.S.A.) Dec. 23, 1935, No. 35579. Convention date, March 23. [Class 13] [See also Groups XXXIX and XL] A sound-reproducing device comprises a sound cavity having a flat rear wall provided with an opening through which sound waves are radiated by a sound-reproducing device disposed behind the rear wall and a deflector within the cavity having a pair of substantially plane surfaces angularly arranged with their adjoining edges extending transversely of the opening in the rear wall. As shown in Figs. 2, 4 the cavity has side walls 15 converging in a rearward direction, an upper wall 16 which slopes downwardly and the rear wall 14, on which the cone 21 of the sound reproducing device 20 is mounted, sloping inwardly. The dihedral angle included between the surfaces 23, 23 which form the deflector, and which may be adjustable, may vary from 60‹ to 120‹ and is preferably about 75‹. The walls and deflector members are arranged so that none of the passages through which the sound is propagated has parallel surfaces or opposed parallel edges. The open end of the cavity may be covered by a loosely woven screen or tapestry.
GB35579/35A 1935-03-23 1935-12-23 Sound reproducing apparatus Expired GB459003A (en)

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
GB459003A true GB459003A (en) 1936-12-31

Family

ID=21755497

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35579/35A Expired GB459003A (en) 1935-03-23 1935-12-23 Sound reproducing apparatus

Country Status (7)

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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2423045A (en) * 1943-09-04 1947-06-24 Kellogg M W Co Liquid phase catalytic reactions of hydrocarbons
DE970228C (en) * 1937-08-25 1958-08-28 Ing Karl Nowak Sound emitter with spatial reproduction
WO1988004514A1 (en) * 1986-12-02 1988-06-16 Wolfgang Spors Loudspeaker installation
GR880100357A (en) * 1988-06-01 1990-05-11 Wolfgang Spors Arrangement of loudspeakers

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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 (en) * 1954-09-18 1961-02-02 Dr Emil Podszus Loudspeaker made up of several elements
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
USD772810S1 (en) * 2013-11-08 2016-11-29 Rusty Chisel, LLC Radio charging station

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE970228C (en) * 1937-08-25 1958-08-28 Ing Karl Nowak Sound emitter with spatial reproduction
US2423045A (en) * 1943-09-04 1947-06-24 Kellogg M W Co Liquid phase catalytic reactions of hydrocarbons
WO1988004514A1 (en) * 1986-12-02 1988-06-16 Wolfgang Spors Loudspeaker installation
GR880100357A (en) * 1988-06-01 1990-05-11 Wolfgang Spors Arrangement of loudspeakers

Also Published As

Publication number Publication date
BE414489A (en)
NL44803C (en)
CH191887A (en) 1937-07-15
AT149923B (en) 1937-06-10
US2020166A (en) 1935-11-05
FR804770A (en) 1936-11-02

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