SE9904465D0 - Pneumatically powered speakers - Google Patents

Pneumatically powered speakers

Info

Publication number
SE9904465D0
SE9904465D0 SE9904465A SE9904465A SE9904465D0 SE 9904465 D0 SE9904465 D0 SE 9904465D0 SE 9904465 A SE9904465 A SE 9904465A SE 9904465 A SE9904465 A SE 9904465A SE 9904465 D0 SE9904465 D0 SE 9904465D0
Authority
SE
Sweden
Prior art keywords
opening
surroundings
chamber
pneumatically powered
powered speakers
Prior art date
Application number
SE9904465A
Other languages
Swedish (sv)
Other versions
SE9904465L (en
SE514782C2 (en
Inventor
Arni Ingvarsson
Original Assignee
Saab Ab
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 Saab Ab filed Critical Saab Ab
Priority to SE9904465A priority Critical patent/SE514782C2/en
Publication of SE9904465D0 publication Critical patent/SE9904465D0/en
Priority to PCT/SE2000/002191 priority patent/WO2001043492A1/en
Priority to AU20321/01A priority patent/AU2032101A/en
Publication of SE9904465L publication Critical patent/SE9904465L/en
Publication of SE514782C2 publication Critical patent/SE514782C2/en

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/08—Non-electric sound-amplifying devices, e.g. non-electric megaphones
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K7/00—Sirens

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Abstract

The invention concerns a pneumatically driven loudspeaker comprising a first chamber (2) having higher pressure than the surroundings (3), where the first chamber has a first opening (6) to the surroundings, and a second chamber (4) having lower pressure than the surroundings (3), where this second chamber has a second opening (9) to the surroundings, whereby the first (6) and the second (9) openings by means of valve mechanisms alternately open and close at a selected frequency, since the valve mechanism consists of at least one flap-like element (5) which with the said frequency swings to and fro, thereby alternately opening and closing both the first opening (6) and the second opening (9).
SE9904465A 1999-12-08 1999-12-08 Pneumatically powered speakers SE514782C2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE9904465A SE514782C2 (en) 1999-12-08 1999-12-08 Pneumatically powered speakers
PCT/SE2000/002191 WO2001043492A1 (en) 1999-12-08 2000-11-09 Pneumatically driven loudspeaker
AU20321/01A AU2032101A (en) 1999-12-08 2000-11-09 Pneumatically driven loudspeaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9904465A SE514782C2 (en) 1999-12-08 1999-12-08 Pneumatically powered speakers

Publications (3)

Publication Number Publication Date
SE9904465D0 true SE9904465D0 (en) 1999-12-08
SE9904465L SE9904465L (en) 2001-04-23
SE514782C2 SE514782C2 (en) 2001-04-23

Family

ID=20418024

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9904465A SE514782C2 (en) 1999-12-08 1999-12-08 Pneumatically powered speakers

Country Status (3)

Country Link
AU (1) AU2032101A (en)
SE (1) SE514782C2 (en)
WO (1) WO2001043492A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015041623A1 (en) * 2013-09-20 2015-03-26 Dushko Yuriy Viktorovich The method of sound oscillations generation and the device for its implementation
GB2571283A (en) * 2018-02-22 2019-08-28 Clifford Pooley Robert Apparatus and method for producing sound

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9801257D0 (en) * 1998-04-09 1998-04-09 Arne Wiberg Pneumatically powered speakers

Also Published As

Publication number Publication date
SE9904465L (en) 2001-04-23
WO2001043492A1 (en) 2001-06-14
AU2032101A (en) 2001-06-18
SE514782C2 (en) 2001-04-23

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Legal Events

Date Code Title Description
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