EP3750326A1 - Absorbeur acoustique pour absorber un son de basse ou de sous-basse - Google Patents

Absorbeur acoustique pour absorber un son de basse ou de sous-basse

Info

Publication number
EP3750326A1
EP3750326A1 EP19715206.9A EP19715206A EP3750326A1 EP 3750326 A1 EP3750326 A1 EP 3750326A1 EP 19715206 A EP19715206 A EP 19715206A EP 3750326 A1 EP3750326 A1 EP 3750326A1
Authority
EP
European Patent Office
Prior art keywords
diaphragm
acoustical
absorber
acoustical absorber
previous
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.)
Pending
Application number
EP19715206.9A
Other languages
German (de)
English (en)
Inventor
Jorge Manuel MENDES SILVA CASTRO
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.)
Artnovion Lda
Original Assignee
Artnovion Lda
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 Artnovion Lda filed Critical Artnovion Lda
Publication of EP3750326A1 publication Critical patent/EP3750326A1/fr
Pending 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
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
    • 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
    • G10K11/002—Devices for damping, suppressing, obstructing or conducting sound in acoustic devices
    • 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
    • G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
    • 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
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
    • H04R1/2876—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding

Definitions

  • the present disclosure relates to the field of acoustical absorption, in particular to an acoustical absorber for absorbing bass or sub-bass sound.
  • said internal volume is air-tight.
  • the diaphragm is arranged to receive frequency-tuning weight or weights for tuning the frequency absorption profile of the acoustical absorber.
  • the centre plate of the diaphragm is arranged to receive frequency-tuning weight or weights for tuning the frequency absorption profile of the acoustical absorber.
  • the acoustical absorber is shaped as a prism, wherein one or more lateral faces of the prism comprise an exteriorly-facing air-tight diaphragm, and one or both of the prism top faces are longitudinally movable for varying the volume of said internal volume for tuning the frequency absorption profile of the acoustical absorber.
  • the acoustical absorber is shaped as a prism and is configured to be mounted against a corner of an interior room with the diaphragm facing said room.
  • Figure 3 Schematic representation of an embodiment of the acoustical absorber comprising a housing and two exteriorly-facing air-tight diaphragm, in opposite faces of the acoustical absorber, each comprising a centre plate and a peripherical flexible elastic membrane, wherein an internal acoustic absorber is comprised in the internal volume of the acoustical absorber and said internal volume is divided into two sub-volumes which are divided by the internal acoustic absorber, each of the two sub-volumes being delimited by each of the diaphragms.
  • Figure 2 illustrates a schematic representation of an embodiment of the acoustical absorber 1 comprising a housing 6 and an exteriorly-facing air-tight diaphragm 2 comprising a centre plate 4 and a peripherical flexible elastic membrane 3, wherein an internal acoustic absorber 5 is comprised in the internal volume of the acoustical absorber and said internal volume is divided into two sub-volumes which are divided by the internal acoustic absorber 5, creating a cavity facing the housing 6 away from the diaphragm 2.
  • Figure 4 illustrates a schematic representation of an embodiment of the acoustical absorber 1 comprising a housing 6 and two exteriorly-facing air-tight diaphragms, in opposite faces of the acoustical absorber, each comprising a centre plate 4 and a peripherical flexible elastic membrane 3, wherein two internal acoustic absorbers 5 are comprised in the internal volume of the acoustical absorber and said internal volume is thus divided into three sub-volumes, creating a cavity between the two internal acoustic absorbers 5.
  • Figure 8 illustrates a schematic representation of an embodiment of the acoustical absorber 1 comprising a housing 6 and an exteriorly-facing air-tight diaphragm 2 comprising two centre plates 4 and a peripherical flexible elastic membrane 3.

Abstract

L'invention concerne un absorbeur acoustique pour absorber un son de basse ou de sous-basse, comprenant : un boîtier; un diaphragme étanche à l'air tourné vers l'extérieur comprenant une plaque centrale et une membrane élastique souple périphérique, ledit logement et ledit diaphragme définissant un volume interne; un absorbeur acoustique interne compris dans ledit volume interne; le diaphragme étant agencé pour vibrer avec une pression sonore externe pour créer un déplacement d'air dans ledit volume interne. Cette membrane peut être agencée pour être un système de ressort - masse, dans lequel la membrane est le ressort du système de ressort - masse et la plaque centrale est la masse du système de ressort - masse. Ledit absorbeur acoustique interne peut être un absorbeur passif ou un résonateur à cavité de Helmholtz, en particulier l'absorbeur passif est une mousse acoustique. Ledit volume interne peut être divisé en deux sous-volumes divisés par l'absorbeur acoustique interne, le premier sous-volume faisant face au diaphragme et le second sous-volume faisant face au boîtier à l'opposé du diaphragme.
EP19715206.9A 2018-02-06 2019-02-06 Absorbeur acoustique pour absorber un son de basse ou de sous-basse Pending EP3750326A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PT11055218 2018-02-06
PCT/IB2019/050958 WO2019155381A1 (fr) 2018-02-06 2019-02-06 Absorbeur acoustique pour absorber un son de basse ou de sous-basse

Publications (1)

Publication Number Publication Date
EP3750326A1 true EP3750326A1 (fr) 2020-12-16

Family

ID=66001257

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19715206.9A Pending EP3750326A1 (fr) 2018-02-06 2019-02-06 Absorbeur acoustique pour absorber un son de basse ou de sous-basse

Country Status (2)

Country Link
EP (1) EP3750326A1 (fr)
WO (1) WO2019155381A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106601224B (zh) * 2017-02-14 2023-07-18 正升环境科技股份有限公司 一种混联结构公路声屏障板

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7440580B2 (en) * 2003-01-16 2008-10-21 Performance Media Industries, Ltd. Room mode bass absorption through combined diaphragmatic and helmholtz resonance techniques
JP5326472B2 (ja) * 2007-10-11 2013-10-30 ヤマハ株式会社 吸音構造
US8636104B2 (en) * 2011-05-11 2014-01-28 Meyer Sound Laboratories, Incorporated Acoustically absorptive panel
CN107103898A (zh) * 2011-10-06 2017-08-29 Hrl实验室有限责任公司 高带宽抗共振膜
CN103137118B (zh) * 2011-11-30 2016-07-06 香港科技大学 声能吸收超材料
US8857563B1 (en) * 2013-07-29 2014-10-14 The Boeing Company Hybrid acoustic barrier and absorber
CN203583696U (zh) 2013-10-18 2014-05-07 广州嘉晟声学灯光工程有限公司 可变吸声体
US20180286371A1 (en) * 2017-03-31 2018-10-04 Alcatel-Lucent Usa Inc. Article For Acoustic Absorption And Composite Material Comprising The Article

Also Published As

Publication number Publication date
WO2019155381A1 (fr) 2019-08-15

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