WO2018069063A1 - Absorbeur acoustique, cavité et véhicule, ainsi qu'utilisation d'un absorbeur acoustique - Google Patents

Absorbeur acoustique, cavité et véhicule, ainsi qu'utilisation d'un absorbeur acoustique Download PDF

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Publication number
WO2018069063A1
WO2018069063A1 PCT/EP2017/074747 EP2017074747W WO2018069063A1 WO 2018069063 A1 WO2018069063 A1 WO 2018069063A1 EP 2017074747 W EP2017074747 W EP 2017074747W WO 2018069063 A1 WO2018069063 A1 WO 2018069063A1
Authority
WO
WIPO (PCT)
Prior art keywords
cavity
absorber
sound
sound absorber
vehicle
Prior art date
Application number
PCT/EP2017/074747
Other languages
German (de)
English (en)
Inventor
Norman Gerkinsmeyer
Original Assignee
Norman Gerkinsmeyer
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 Norman Gerkinsmeyer filed Critical Norman Gerkinsmeyer
Publication of WO2018069063A1 publication Critical patent/WO2018069063A1/fr

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
    • G10K11/16—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
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/021—Casings; Cabinets ; Supports therefor; Mountings therein incorporating only one transducer
    • 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
    • H04R1/288—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 for loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/13—Acoustic transducers and sound field adaptation in vehicles

Definitions

  • the invention relates to a sound absorber for use in vehicles, at least having at least one
  • the invention relates to a
  • Cavity of a vehicle for mounting at least one speaker for sonicating a passenger compartment wherein the cavity of a plurality of interconnected and different, hollow chambers in the vehicle body
  • Vehicle body including bodywork, chassis,
  • Either these cavities are composed of several, interconnected, hollow chambers in the lower part of the vehicle and / or there are other attachments, usually made of plastic, mounted to the required
  • Speaker volume to form it Coupled to this cavity, the speakers are usually called so-called
  • the existing cavity is usually no optimal space for the speaker, since it is formed of several, different sizes and partially connected via small bottlenecks, hollow chambers and often these chambers are not tight, as these cavities are at risk of corrosion and moisture major Condensation must be ventilated to prevent mold.
  • An additional problem is that even with an optimum cavity or volume disadvantageous sound effects, such as standing waves,
  • Distortions, reflections, modes and resonances, etc., of the speaker sound can form. Especially in the
  • Speakers such as smaller middle or midrange tweeters or fullrange speakers makes it almost impossible.
  • the document DE 10 2012 003 769 B3 describes a sound absorber for a motor vehicle with a
  • connection channel connects the
  • Passenger compartment still arranged directly on the cavity, but connected via the pipe to the passenger compartment. That is, the sound of the speaker is over the
  • Absorber volume which interacts via a connecting channel with a composite cavity of the vehicle or is in resonance and thus frequency-dependent acts as a bandpass filter and thus absorbs the sound effects at least in part.
  • the cavity of the vehicle can be made up of several individual and different sizes
  • geometric dimensions of the connecting channel in particular of the length and the cross-sectional area of the channel, as well as the volume of the absorber. Good changes in the effect of the sound absorber can be obtained by changing the
  • Ratio of channel length to cross-sectional area and / or channel length to absorber volume A rule of thumb
  • Absorption frequency range can be lowered by a larger volume absorber is used and the channel longer
  • Connection channel to be changed.
  • the absorber volume causes the feed to absorb the sound, while in an arrangement in the connecting channel the
  • Material in motor vehicles, air and water vehicles is mainly metal wool, such as fine stainless steel wool, as these neither burn, corrode or outgas nor moisture can hold and ensures good ventilation and dehydration of the cavities.
  • metal wool such as fine stainless steel wool
  • Sound absorber acts as a bandpass filter to a certain absorption frequency. This gives a much more straightforward frequency response, especially in the lower octaves of the frequency band. This is particularly advantageous in the bass range of bass speakers.
  • a sound absorber for use in vehicles, in particular in motor vehicles, aircraft and watercraft, comprising at least one
  • At least one connecting channel which connects the at least one absorber volume with a cavity in which there is at least one speaker for direct sonication of a passenger compartment, said at least one speaker is disposed directly on the passenger compartment, so that the back of the at least one speaker protrudes into the cavity.
  • the sound absorber has only one connecting channel between the absorber volume and the cavity. In other embodiments, more than one connection channel, for example, two or more
  • the connecting channels preferably have different lengths and / or different cross-sectional areas, both in terms of shape and size.
  • a preferred embodiment provides that the length of the at least one connecting channel is greater than the sum of the wall thicknesses of a housing of the
  • connection channel is not just a hole in the housing walls of the absorber volume and cavity. Accordingly, it is further preferred that the
  • Absorber volume and / or the cavity protrudes or a supernatant is formed. If the connection channel is in the cavity over, this has the advantage that it takes away no volume or space in the absorber volume, as this has a disturbing effect on the absorption effect of the sound absorber.
  • the sound absorber inherently has a certain
  • Sound absorber designed such that it at least reduced in connection with the cavity at least one negative sound effect in the passenger compartment and / or in the cavity or extinguished.
  • the sound absorber thus has a frequency-dependent absorption behavior.
  • the absorption frequency range is particular
  • the absorption frequency range is also dependent on the number, type and shape of the cavity forming chambers. If the sound absorber, for example, a frequency of about
  • a feedstock is provided, which in the at least one absorber volume and / or in the
  • At least one connecting channel is introduced and thus at least partially fills these components.
  • Feedstock are preferably porous
  • Sound-absorbing substances with continuous, open pores ie open-pored materials.
  • materials such as melamine resin foam, mineral fiber plates, nonwoven, in particular polyester nonwoven, or non-corrodible metal wool, such as Example stainless steel wool, used.
  • non-combustible materials particularly advantageous is the use of non-combustible materials.
  • Material is formed as the housing of the cavity, for example made of plastic.
  • the sound absorber as an independent, to the cavity
  • the sound absorber can be welded, unscrewed or flanged to the housing of the cavity.
  • the invention further relates to a cavity of a
  • Vehicle in particular a force, air or
  • Cavity and / or the passenger compartment is connected and there resulting negative sound effects, such as room resonances,
  • the cavity of the vehicle is in one
  • Embodiment of several, interconnected and optionally different chambers in the vehicle body together includes cavities of the ground-level components of the vehicle, the body, etc. Often, these chambers are connected to each other via bottlenecks. In the cavity and in the passenger compartment caused by the non-optimal shape of the chambers, their compounds and thus the cavity negative sound effects such as
  • the cavity is formed only of a single chamber.
  • the cavity uses the volume of the absorber.
  • the sound absorber according to the invention is designed such that it is suitable for certain sound frequency ranges
  • the at least one sound absorber is arranged in the same chamber as the at least one loudspeaker.
  • the loudspeakers are mounted in the chamber, ie the back of the loudspeaker protrudes into the chamber.
  • the invention relates to a vehicle, in particular a motor vehicle, aircraft or watercraft, at least comprising a cavity and at least one loudspeaker, wherein the cavity is formed as described above.
  • the at least one loudspeaker is a bass loudspeaker.
  • the sound effects have a particularly adverse effect on the
  • the invention relates to the use of a
  • Sound absorber in a vehicle wherein the sound absorber in the cavity and / or in the passenger compartment resulting negative sound effects there at least partially absorbed.
  • the invention also relates to the specific
  • the invention relates to a method for reducing negative sound effects in a cavity, in which at least one at least one frequency range of the negative
  • Sound effects of tuned sound absorber via at least one connecting channel with a space in which the negative sound effects occur is connected.
  • FIG. 3 shows a schematic representation of a sound absorber
  • FIG 7 frequency characteristic of a loudspeaker
  • FIG. 1 shows a schematic representation of a
  • Vehicle body in which there are a plurality of hollow chambers, from which the cavity according to the invention is composed. These are in this embodiment chambers in the front
  • FIG. 2 shows a schematic representation of FIG
  • the cavity 8 consists here only of a single chamber. In this chamber is the
  • the cavity 8 and the sound absorber 14 are formed as separate components.
  • FIG. 3 shows a further schematic
  • said cavity 8 is composed of a plurality of hollow chambers 9, 10, 11 and 12.
  • the chambers 9, 10, 11 and 12 are of different sizes and shapes. They are connected via bottlenecks.
  • Sound absorbers 14 are also formed here as separate components.
  • the loudspeaker 13 is mounted in the largest chamber 10 in this embodiment. Opposite to
  • the sound absorber 14 has an absorber volume 15 and a connection channel 16.
  • the connecting channel 16 connects the absorber volume 15 with the cavity 8.
  • the connecting channel 16 projects into both the absorber volume 15 and into the cavity 8. Furthermore, the
  • Sound absorber 14 still additional feedstock 17, which is arranged in the absorber volume 15 and in the connecting channel 16.
  • the feedstock 17 is for example stainless steel wool.
  • frequency characteristics of a loudspeaker without sound absorber and with sound absorber are shown in different versions. Was used, the cavity 8 according to the figure 3. On the abscissa is the
  • FIG. 4 shows the frequency curve 21 without sound absorber.
  • the frequency course 21 is clearly restless and shows strong break-ins and increases. In the range between -14 dB and +10 dB, the frequency response 21 varies over two octaves.
  • FIG. 5 shows the frequency curve 22 measured in FIG.
  • FIG. 6 shows the frequency curve 23 measured in FIG.
  • Feedstock such as stainless steel wool.
  • FIG. 7 shows the frequency curve 24, measured in FIG.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Multimedia (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

Abstract

L'invention concerne un absorbeur acoustique (14) destiné à être utilisé dans des véhicules et présentant au moins un volume d'absorption (15). Au moins un canal de liaison (16) relie le ou les volumes d'absorption (15) à une cavité (8) dans laquelle est présent au moins un haut-parleur (13) servant à sonoriser l'habitacle. L'invention concerne par ailleurs une cavité (8) ménagée dans un véhicule pour le montage d'au moins un haut-parleur (13) servant à sonoriser l'habitacle, la cavité (8) étant composée d'au moins une chambre creuse (9, 10, 11, 12) et au moins un absorbeur acoustique selon l'invention (14) étant relié à la cavité (8) et/ou à l'habitacle où il absorbe au moins en partie les effets acoustiques négatifs qui s'y produisent. L'invention concerne également un véhicule présentant au moins une cavité selon l'invention (8) et au moins un haut-parleur (13). L'invention concerne en outre l'utilisation d'un absorbeur acoustique (14) dans un véhicule.
PCT/EP2017/074747 2016-10-12 2017-09-29 Absorbeur acoustique, cavité et véhicule, ainsi qu'utilisation d'un absorbeur acoustique WO2018069063A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016119475.1 2016-10-12
DE102016119475.1A DE102016119475B4 (de) 2016-10-12 2016-10-12 Schallabsorber und Fahrzeug, sowie Verwendung eines Schallabsorbers

Publications (1)

Publication Number Publication Date
WO2018069063A1 true WO2018069063A1 (fr) 2018-04-19

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Application Number Title Priority Date Filing Date
PCT/EP2017/074747 WO2018069063A1 (fr) 2016-10-12 2017-09-29 Absorbeur acoustique, cavité et véhicule, ainsi qu'utilisation d'un absorbeur acoustique

Country Status (2)

Country Link
DE (1) DE102016119475B4 (fr)
WO (1) WO2018069063A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020134341A1 (fr) * 2018-12-24 2020-07-02 瑞声声学科技(深圳)有限公司 Terminal mobile
TWI840461B (zh) * 2018-12-06 2024-05-01 瑞典商威福布雷克公司 干擾噪音控制單元

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109788395B (zh) * 2018-12-31 2021-05-04 瑞声声学科技(深圳)有限公司 扬声器箱
CN109714678B (zh) * 2018-12-31 2021-04-30 瑞声声学科技(深圳)有限公司 扬声器箱
CN112185332A (zh) * 2020-09-29 2021-01-05 西南大学 一种多孔折曲fp通道自适应宽带吸声结构

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4161995A (en) * 1976-08-20 1979-07-24 Blaupunkt-Werke Gmbh Loudspeaker housing forming a closed, damped system, particularly for automotive installation
EP0429121A1 (fr) 1989-11-16 1991-05-29 Koninklijke Philips Electronics N.V. Système de haut-parleurs comportant un résonateur de Helmholtz couplé à un tube acoustique
US20050163334A1 (en) * 2004-01-23 2005-07-28 Susimin Suprapmo Speaker with externally mounted acoustic extension
EP1786235A1 (fr) 2004-08-23 2007-05-16 Matsushita Electric Industrial Co., Ltd. Dispositif de haut-parleur
JP2008022174A (ja) 2006-07-11 2008-01-31 Ritz Corporation Inc 吸音部材
EP2077680A1 (fr) * 2007-12-14 2009-07-08 Harman/Becker Automotive Systems GmbH Système de haut-parleur avec enceinte à double chambre
DE102012003769B3 (de) 2012-02-24 2013-07-04 Audi Ag Lautsprechersystem für ein Kraftfahrzeug

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10203254A (ja) * 1997-01-20 1998-08-04 Fujitsu Ten Ltd 車載用ドアスピーカシステム
DE10353578B4 (de) * 2003-11-14 2005-11-03 Reitter & Schefenacker Sound Gmbh Lautsprechereinheit mit mehrteiligem Resonanzraum

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4161995A (en) * 1976-08-20 1979-07-24 Blaupunkt-Werke Gmbh Loudspeaker housing forming a closed, damped system, particularly for automotive installation
EP0429121A1 (fr) 1989-11-16 1991-05-29 Koninklijke Philips Electronics N.V. Système de haut-parleurs comportant un résonateur de Helmholtz couplé à un tube acoustique
US20050163334A1 (en) * 2004-01-23 2005-07-28 Susimin Suprapmo Speaker with externally mounted acoustic extension
EP1786235A1 (fr) 2004-08-23 2007-05-16 Matsushita Electric Industrial Co., Ltd. Dispositif de haut-parleur
JP2008022174A (ja) 2006-07-11 2008-01-31 Ritz Corporation Inc 吸音部材
EP2077680A1 (fr) * 2007-12-14 2009-07-08 Harman/Becker Automotive Systems GmbH Système de haut-parleur avec enceinte à double chambre
DE102012003769B3 (de) 2012-02-24 2013-07-04 Audi Ag Lautsprechersystem für ein Kraftfahrzeug

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI840461B (zh) * 2018-12-06 2024-05-01 瑞典商威福布雷克公司 干擾噪音控制單元
WO2020134341A1 (fr) * 2018-12-24 2020-07-02 瑞声声学科技(深圳)有限公司 Terminal mobile

Also Published As

Publication number Publication date
DE102016119475B4 (de) 2019-02-21
DE102016119475A1 (de) 2018-04-12

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