WO2005062821A3 - Perforation acoustic muffler assembly and method of reducing noise transmission through objects - Google Patents

Perforation acoustic muffler assembly and method of reducing noise transmission through objects Download PDF

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Publication number
WO2005062821A3
WO2005062821A3 PCT/US2004/042671 US2004042671W WO2005062821A3 WO 2005062821 A3 WO2005062821 A3 WO 2005062821A3 US 2004042671 W US2004042671 W US 2004042671W WO 2005062821 A3 WO2005062821 A3 WO 2005062821A3
Authority
WO
WIPO (PCT)
Prior art keywords
noise
noise absorbing
absorbing layer
objects
reducing noise
Prior art date
Application number
PCT/US2004/042671
Other languages
French (fr)
Other versions
WO2005062821A2 (en
Inventor
Bonnie S Schnitta
Original Assignee
Sound Sense
Bonnie S Schnitta
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 Sound Sense, Bonnie S Schnitta filed Critical Sound Sense
Publication of WO2005062821A2 publication Critical patent/WO2005062821A2/en
Publication of WO2005062821A3 publication Critical patent/WO2005062821A3/en

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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
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162—Selection of materials
    • G10K11/168—Plural layers of different materials, e.g. sandwiches

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Building Environments (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

A noise attenuation system (10) is disclosed for use in a structure (2) having a recessed fixture (3) mounted therein or other unit which creates a hole (1) in the structure (2) in which it is secured, such as a ceiling. The noise attenuation system (10) is constructed to permit the absorption of noise emitted into the structure (2) from the mechanism (3). The noise attenuation includes a noise absorbing muffler (11) positioned within the structure (2) in an area substantially surrounding the mechanism (3). The noise absorbing layer (13) includes an outer barrier layer (12) that limits the passage of sound waves emitted from the mechanism therethrough. The noise absorbing muffler (11) further includes a noise absorbing layer (13) positioned adjacent the outer barrier layer. The noise absorbing layer (13) absorbs a predetermined amount of sounds waves emitted from the recessed fixture (3). Additionally, an optional noise absorbing layer, or equivalent decoupling material can be included to decouple the barrier from the structure for low frequency noises.
PCT/US2004/042671 2003-12-22 2004-12-22 Perforation acoustic muffler assembly and method of reducing noise transmission through objects WO2005062821A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US53098003P 2003-12-22 2003-12-22
US60/530,980 2003-12-22

Publications (2)

Publication Number Publication Date
WO2005062821A2 WO2005062821A2 (en) 2005-07-14
WO2005062821A3 true WO2005062821A3 (en) 2006-05-04

Family

ID=34738618

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/042671 WO2005062821A2 (en) 2003-12-22 2004-12-22 Perforation acoustic muffler assembly and method of reducing noise transmission through objects

Country Status (1)

Country Link
WO (1) WO2005062821A2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3985200A (en) * 1974-08-29 1976-10-12 Sepmeyer Ludwig W Background sound system and apparatus for masking speech
US4057689A (en) * 1973-07-09 1977-11-08 Roy H. Smith, Jr. High fidelity sound reproduction system and modules thereof
US4923032A (en) * 1989-07-21 1990-05-08 Nuernberger Mark A Ceiling panel sound system
US6098743A (en) * 1997-06-06 2000-08-08 Owens Corning Fiberglas Technology, Inc. Acoustical speaker housing and method of installation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4057689A (en) * 1973-07-09 1977-11-08 Roy H. Smith, Jr. High fidelity sound reproduction system and modules thereof
US3985200A (en) * 1974-08-29 1976-10-12 Sepmeyer Ludwig W Background sound system and apparatus for masking speech
US4923032A (en) * 1989-07-21 1990-05-08 Nuernberger Mark A Ceiling panel sound system
US6098743A (en) * 1997-06-06 2000-08-08 Owens Corning Fiberglas Technology, Inc. Acoustical speaker housing and method of installation

Also Published As

Publication number Publication date
WO2005062821A2 (en) 2005-07-14

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