EP0331566A1 - Zylindrischer Akustischer Wellenleiter - Google Patents

Zylindrischer Akustischer Wellenleiter Download PDF

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Publication number
EP0331566A1
EP0331566A1 EP19890400530 EP89400530A EP0331566A1 EP 0331566 A1 EP0331566 A1 EP 0331566A1 EP 19890400530 EP19890400530 EP 19890400530 EP 89400530 A EP89400530 A EP 89400530A EP 0331566 A1 EP0331566 A1 EP 0331566A1
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EP
European Patent Office
Prior art keywords
conduit
waveguide
outlet
orifice
passage
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.)
Granted
Application number
EP19890400530
Other languages
English (en)
French (fr)
Other versions
EP0331566B1 (de
Inventor
Christian Heil
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.)
L Acoustics SAS
Original Assignee
Heil Acoustics
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Filing date
Publication date
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Application filed by Heil Acoustics filed Critical Heil Acoustics
Publication of EP0331566A1 publication Critical patent/EP0331566A1/de
Application granted granted Critical
Publication of EP0331566B1 publication Critical patent/EP0331566B1/de
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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
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/26—Sound-focusing or directing, e.g. scanning
    • 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

Definitions

  • the present invention relates to the optimization of acoustic couplings between neighboring electroacoustic transducers, over the whole extent of their frequency spectrum, by means of a particular waveguide.
  • the purpose of this waveguide is to transform an isophase circular planar wave surface (loudspeaker membrane or outlet of a compression chamber) into an isophase rectangular planar wave surface.
  • the alignment of several rectangular surfaces thus formed constitutes an isophase flat ribbon from which a coherent cylindrical progressive wave can emerge.
  • several transducers thus coupled generate a coherent cylindrical wave while these same transducers without the waveguide of the invention generate as many spherical traveling waves interfering with each other.
  • the sound waveguide has a circular input and a rectangular output so that the propagation time of the wave between input and output is constant, whatever the acoustic path taken.
  • the waveguide adapts in front of a loudspeaker or in front of the orifice of a compression chamber along the axis of the transducer considered, and comprises a conduit widening from the inlet to an outlet area characterized by the fact that the area of the outlet opening of the waveguide is flat and oblong, that its duct has a passage (between the inlet opening and the outlet area) evoking the general shape of 'a sheet, that the shortest paths allowed in the sheet-like passage (s) are all of practically equal length to go from the inlet orifice to the outlet orifice of the conduit.
  • the so-called sheet form is obtained by deformation of the walls of the conduit or by incorporation of one or more bodies internal to the conduit, or both by deformation of the walls of the conduit and by incorporation of one or more bodies internal to said conduit.
  • the internal body can have various shapes and be made up of several elements.
  • This body may have the general appearance of a flattened pyramid, or of a flattened cone, the point of which penetrates into the entry orifice, and the other end of which is bevelled so that its edge is flush with the outlet area of the conduit along the axis of said outlet.
  • the diffuser is designed to work with several speakers and several waveguides.
  • the oblong areas of the outlet orifices are all in one plane and in line with one another.
  • the waveguide shown "in Fig. 1 is made up of three elements 1, 2, 3.
  • Elements 1 and 2 are symmetrical along a vertical plane and constitute shells between which the internal body 3 is fixed.
  • Each shell has a rear flange 4 or 4 ′ and a front flange 6 or 6 ′ joined by a spacer plate 5 or 5 ′,
  • the flanges 4-4 ′ coming in extension of one another, and it is the same for the flanges 6, 6 ′ which leave between them a slot 9 formed by the notches 8, 8 ′.
  • the hollow parts 7 and 7 ′ form a housing for the element 3.
  • the rear flanges 4,4 ′ have a small circular notch 10 10 ′ facing each other after assembly to determine the inlet orifice 11.
  • Fig. 4 shows the case of a guide provided for loudspeaker with compression chamber, and the orifice 11, of a relatively small surface area, lets see the tip 12 of the internal body 3 which will be described later in detail.
  • Fig. 5 shows the case of a waveguide provided for a speaker with an annular diaphragm.
  • the orifice 11 ′ has a larger surface area than in the previous case.
  • Fig. 6 shows the front flange 6 and 6 ′ with their notch 8, 8 ′ determining the slot 9 leaving the body 3 ending on this side with an edge 14.
  • Figs. 2 and 3 we see a waveguide fixed on a loudspeaker 15 and provided with a horn 16.
  • a continuous passage bearing the references 16 to 18 ′. This passage surrounds the body 3 on all sides, and has an almost constant width.
  • the body 3 and the wall of the housing 7, 7 ′ have compatible shapes and dimensions to allow a fluid sheet to pass between them in the conduit provided for this purpose.
  • O 35mm
  • the internal body 3 has the general shape of a cone 19, the base of which is bevelled up to half its height to determine two areas 20, 21 determining the edge 14.
  • the body 3 is fixed by any known means.
  • Fig. 9 we see a single tongue 22, but there is a symmetrical tongue, and during assembly the two tongues are sandwiched between the plates 5 and 5 ′.
  • the waveguide is made of rigid material (metal, plastic, resin) by molding. As explained above, it is made up of three parts, the central part is sandwiched between two identical external parts which determine the walls of the waveguide and include the flanges for fixing to the loudspeaker at the entrance, at flag at the exit. These three parts are assembled by gluing, welding or screwing.
  • the shapes of the internal body and of the housing are such that all the shortest paths from the inlet to the outlet are all the same length, or very similar lengths.
  • the propagation time of the sound wave is constant through the guide.
  • the said waveguide makes it possible to transform the isophase circular wave plane generated by the membrane of a loudspeaker or the orifice of a compression chamber into a rectangular isophase wave plane.
  • the dimensions of the rectangular plane in question are calibrated so that the emerging sound wave propagates in quasi-cylindrical mode.
  • the optimization parameters of a guide are as follows: - either (f1, f2) with f2> f1, the frequency interval over which the guide must be effective and ( ⁇ 1, ⁇ 2) the associated wavelengths, - either l and L respectively the width and length of the guide exit rectangle, L being the vertical side, l the horizontal side.
  • the preferred field of use of the diffusers according to the invention is that of professional sound reinforcement in rooms or open-air spaces which require a large number of juxtaposed loudspeakers.
  • the stacking of several loudspeakers with waveguides in the height direction, the L side being vertical has the effect of generating a flat isophase ribbon from which a coherent cylindrical wave can emerge. Optimal coupling between the speakers is thus achieved.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
EP89400530A 1988-02-29 1989-02-24 Zylindrischer Akustischer Wellenleiter Expired - Lifetime EP0331566B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8802481A FR2627886B1 (fr) 1988-02-29 1988-02-29 Guide d'onde sonore cylindrique
FR8802481 1988-02-29

Publications (2)

Publication Number Publication Date
EP0331566A1 true EP0331566A1 (de) 1989-09-06
EP0331566B1 EP0331566B1 (de) 1994-06-01

Family

ID=9363735

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89400530A Expired - Lifetime EP0331566B1 (de) 1988-02-29 1989-02-24 Zylindrischer Akustischer Wellenleiter

Country Status (5)

Country Link
US (1) US5163167A (de)
EP (1) EP0331566B1 (de)
DE (1) DE68915582T2 (de)
ES (1) ES2054041T3 (de)
FR (1) FR2627886B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1635606A1 (de) 2004-09-13 2006-03-15 L'Acoustics Beschallungsanlage mit einstellbarer Richtwirkung
EP1178702A3 (de) * 2000-08-02 2006-05-31 Alan Brock Adamson Wellenformungsschallgehäuse
CN103578461A (zh) * 2012-07-31 2014-02-12 顾康 一种可调角度非对称高频声波控制器
CN108781334A (zh) * 2016-02-24 2018-11-09 杜比实验室特许公司 改善声音弥散的平面扩音器歧管

Families Citing this family (53)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5900593A (en) * 1995-07-31 1999-05-04 Adamson; Alan Brock Loudspeaker system
US6112847A (en) * 1999-03-15 2000-09-05 Clair Brothers Audio Enterprises, Inc. Loudspeaker with differentiated energy distribution in vertical and horizontal planes
US6394223B1 (en) 1999-03-12 2002-05-28 Clair Brothers Audio Enterprises, Inc. Loudspeaker with differential energy distribution in vertical and horizontal planes
GB9916380D0 (en) * 1999-07-14 1999-09-15 Funktion One Research Loudspeaker
US6343133B1 (en) 1999-07-22 2002-01-29 Alan Brock Adamson Axially propagating mid and high frequency loudspeaker systems
DE60043311D1 (de) * 2000-09-22 2009-12-24 Robert Michael Grunberg Direktkopplung von wellenleitern an einen komprimierungstreiber mit passenden schlitzförmigen hälsen
CN100394474C (zh) 2001-01-11 2008-06-11 梅尔录音实验室公司 喇叭形扬声器的歧管和散射特性控制方法
US8718310B2 (en) 2001-10-19 2014-05-06 Qsc Holdings, Inc. Multiple aperture speaker assembly
US7177437B1 (en) * 2001-10-19 2007-02-13 Duckworth Holding, Llc C/O Osc Audio Products, Inc. Multiple aperture diffraction device
US6611440B1 (en) * 2002-03-19 2003-08-26 Bha Group Holdings, Inc. Apparatus and method for filtering voltage for an electrostatic precipitator
US7278513B2 (en) 2002-04-05 2007-10-09 Harman International Industries, Incorporated Internal lens system for loudspeaker waveguides
DE20302882U1 (de) * 2003-02-21 2004-06-24 Stamer Musikanlagen Gmbh Vorrichtung zur Formgestaltung von Schallwellen
WO2004086812A1 (ja) * 2003-03-25 2004-10-07 Toa Corporation スピーカシステム用音波案内構造およびホーンスピーカ
US7068805B2 (en) * 2003-07-11 2006-06-27 Earl Russell Geddes Acoustic waveguide for controlled sound radiation
US6870942B1 (en) 2003-09-03 2005-03-22 Curtis H. Graber Loudspeaker for line array sound system
FR2890481B1 (fr) * 2005-09-02 2007-12-07 Marc Pierre Marcel Weyant Lentille acoustique convergente unicellulaire
DE102005051809B3 (de) 2005-10-27 2007-03-22 Martin Kling Akustischer Transformer
US7708112B2 (en) * 2005-11-10 2010-05-04 Earl Russell Geddes Waveguide phase plug
ITRM20060637A1 (it) * 2006-11-30 2008-06-01 B & C Speakers S P A Guida d'onda acustica e sistema elettroacustico includente tale guida d'onda
JP2008278145A (ja) * 2007-04-27 2008-11-13 Victor Co Of Japan Ltd スピーカシステム用音波行路長補正構造
US8224001B1 (en) 2007-12-21 2012-07-17 Waller Jon J Line array loudspeaker
DE102009027212B4 (de) 2009-06-25 2015-01-22 Sennheiser Electronic Gmbh & Co. Kg Lautsprechersystem und Wellenformereinheit
US8411892B2 (en) 2010-05-03 2013-04-02 Norberto Grundland Aesthetic linear speaker assembly
US8588450B2 (en) 2010-08-04 2013-11-19 Robert Bosch Gmbh Annular ring acoustic transformer
US8761425B2 (en) 2010-08-04 2014-06-24 Robert Bosch Gmbh Equal expansion rate symmetric acoustic transformer
US9204211B2 (en) 2011-12-16 2015-12-01 Avnera Corporation Pad-type device case providing enhanced audio functionality and output
DE102012102207B3 (de) * 2012-03-15 2013-08-29 BMS Speakers GmbH Ringmembran-Kompressionstreiber
US8925478B2 (en) * 2012-05-01 2015-01-06 Curtis E. Graber Directional isophasic toroidal whistle
CN103428603B (zh) * 2012-05-16 2016-04-27 顾康 一种可调角度的高频声波导向槽
US8887862B2 (en) * 2013-03-15 2014-11-18 Bag End, Inc. Phase plug device
DE102013010570B4 (de) * 2013-06-25 2023-01-05 KSdigital GmbH Schalltransformator und Lautsprecher
EP2922050A1 (de) 2014-03-10 2015-09-23 Ciare s.r.l. Akustischer Wellenleiter
US9282398B2 (en) 2014-03-19 2016-03-08 Dana Monroe Speaker system having wide bandwidth and wide high-frequency dispersion
US9245513B1 (en) * 2014-10-24 2016-01-26 Dimitar Kirilov Dimitrov Radial input waveguide
US9392358B2 (en) 2014-10-28 2016-07-12 Robert Bosch Gmbh Waveguide for shaping sound waves
US9571923B2 (en) 2015-01-19 2017-02-14 Harman International Industries, Incorporated Acoustic waveguide
KR101634279B1 (ko) * 2015-03-19 2016-07-08 김태형 스피커용 입체 음향 가이드, 및 이를 구비한 스피커
MX2017013112A (es) 2015-04-14 2018-07-06 Meyer Sound Laboratories Incorporated Altavoz alineado con abertura de haz amplia y constante.
CN105244019A (zh) * 2015-10-27 2016-01-13 刘善延 一种球面声波转成柱面声波的声学波导
US9716929B1 (en) 2016-01-05 2017-07-25 Bose Corporation Relative positioning of speakers
US10334337B2 (en) 2016-02-18 2019-06-25 Bose Corporation Speaker
US9794662B1 (en) 2016-03-29 2017-10-17 Bose Corporation Connection apparatus
FR3062233B1 (fr) 2017-01-24 2020-03-20 L-Acoustics Systeme de diffusion sonore
NL2019480B1 (en) * 2017-09-04 2019-03-11 Alcons Audio Bv A loudspeaker with a wave front shaping device
FR3072840B1 (fr) 2017-10-23 2021-06-04 L Acoustics Arrangement spatial de dispositifs de diffusion sonore
CN111587581B (zh) 2018-01-09 2021-11-12 Qsc公司 用于扬声器组件的多路声波导
DE102019000623A1 (de) 2019-01-29 2020-07-30 Dieter Klein Schallführung mit variablem Austrittswinkel
KR102097891B1 (ko) 2019-02-01 2020-04-06 김태형 스피커용 입체 음향 가이드 및 이를 구비한 스피커
FR3100680B1 (fr) * 2019-09-09 2022-11-04 L Acoustics Dispositif de diffusion sonore a directivite large bande controlee
GB2588142B (en) 2019-10-09 2023-05-31 Gp Acoustics International Ltd Acoustic waveguides
EP4070567A1 (de) 2019-12-02 2022-10-12 Harman International Industries, Incorporated Kompressionstreiber mit dommembran und ringausgang
WO2021195342A1 (en) 2020-03-25 2021-09-30 Qsc, Llc Acoustic waveguide
US11445303B2 (en) 2020-10-16 2022-09-13 Harman International Industries, Incorporated Omnidirectional loudspeaker and compression driver therefor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB757021A (en) * 1947-09-10 1956-09-12 Kolster Brandes Ltd Improvements in or relating to loudspeaker mountings
US3980829A (en) * 1973-06-05 1976-09-14 Harold Norman Beveridge Wide angle cylindrical wave loudspeaker extending approximately from floor to ceiling height with a lens
US4718517A (en) * 1986-02-27 1988-01-12 Electro-Voice, Inc. Loudspeaker and acoustic transformer therefor

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4091891A (en) * 1973-01-17 1978-05-30 Onkyo Kabushiki Kaisha Horn speaker
GB1592246A (en) * 1976-09-23 1981-07-01 Isaac T P Sound projection system
US4171734A (en) * 1977-11-10 1979-10-23 Beta Sound, Incorporated Exponential horn speaker
US4344504A (en) * 1981-03-27 1982-08-17 Community Light & Sound, Inc. Directional loudspeaker
US4390078A (en) * 1982-02-23 1983-06-28 Community Light & Sound, Inc. Loudspeaker horn
US4713799A (en) * 1984-10-15 1987-12-15 Deere & Company Ultrasonic horn with sidelobe suppressing centerpiece
US4776428A (en) * 1987-11-16 1988-10-11 Belisle Acoustique Inc. Sound projection system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB757021A (en) * 1947-09-10 1956-09-12 Kolster Brandes Ltd Improvements in or relating to loudspeaker mountings
US3980829A (en) * 1973-06-05 1976-09-14 Harold Norman Beveridge Wide angle cylindrical wave loudspeaker extending approximately from floor to ceiling height with a lens
US4718517A (en) * 1986-02-27 1988-01-12 Electro-Voice, Inc. Loudspeaker and acoustic transformer therefor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1178702A3 (de) * 2000-08-02 2006-05-31 Alan Brock Adamson Wellenformungsschallgehäuse
EP1635606A1 (de) 2004-09-13 2006-03-15 L'Acoustics Beschallungsanlage mit einstellbarer Richtwirkung
CN103578461A (zh) * 2012-07-31 2014-02-12 顾康 一种可调角度非对称高频声波控制器
CN108781334A (zh) * 2016-02-24 2018-11-09 杜比实验室特许公司 改善声音弥散的平面扩音器歧管
CN108781334B (zh) * 2016-02-24 2021-04-16 杜比实验室特许公司 改善声音弥散的平面扩音器歧管

Also Published As

Publication number Publication date
US5163167A (en) 1992-11-10
ES2054041T3 (es) 1994-08-01
DE68915582T2 (de) 1995-01-19
FR2627886A1 (fr) 1989-09-01
DE68915582D1 (de) 1994-07-07
EP0331566B1 (de) 1994-06-01
FR2627886B1 (fr) 1994-05-13

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