• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a loudspeaker arrangement having a plurality of loudspeakers (14) radiating in different directions, wherein the loudspeakers (14) are arranged in rows in a closed loudspeaker housing (11) and arranged with their acoustic centers essentially on a common line, and the loudspeakers Loudspeaker (14) in the mounted position with its emission direction inclined obliquely downward, wherein the closed speaker housing (11) has two inclined longitudinal walls (12, 13) on which the speakers (14) are mounted.
    公开号:CH710048B1
    申请号:CH01172/15
    申请日:2015-08-14
    公开日:2019-05-15
    发明作者:Hammer Romano
    申请人:Itec Tontechnik Und Ind Gesellschaft M B H；
    IPC主号:
    专利说明:

    Description: The invention relates to a loudspeaker arrangement having a plurality of loudspeakers radiating in different directions, which are arranged in rows in a loudspeaker housing, offset from one another.
    Loudspeaker arrangements with bundling and directivity in different directions can be used to advantage in acoustically critical premises (or critical acoustic environments), such as in railway stations. Thus, it is known from DE 10 2010 010 309 A1 to use such a loudspeaker arrangement with broadband loudspeakers arranged flat in opposite directions on a common baffle in station halls. The full-range speakers are arranged, for example, in an array of 4x4 speakers, which radiate alternately in opposite directions. In this case, a completely symmetrical sound radiation of the loudspeaker arrangement is obtained, wherein in detail the broadband loudspeakers are arranged radiating substantially perpendicular to the sound wall. In order to achieve a tendency of the sound radiation down towards the ground, a corresponding electronic control and so a virtual inclination of the sound field is provided. However, this means a special effort, in which the broadband speakers are interconnected so group electronic that respective groups are electronically delayed, so as to achieve a downwardly inclined sound field on both sides of the baffle. A comparable loudspeaker arrangement with sound emitters in a circular arrangement is shown in CN 202 679 586 U, wherein the circular area of the circular array is aligned so that the sound waves are emitted vertically downwards or obliquely downwards.
    From US 2008/0 212 805 A1 u.a. a loudspeaker arrangement in which woofer and midrange loudspeakers are arranged in two vertical rows, mutually offset, facing each other with the emission direction. This speaker open as well as tweeter in vertical slot recesses on the front of the speaker housing. In this case, a complex electronic control of the speakers is provided.
    In WO 99/23 855 A a public address system is arranged in several horizontal rows in subjects stacked, revealed in different horizontal directions radiating speakers, which is intended in particular for outdoor facilities, the emitted sound at a distance of a few meters in the same way as eg should be audible at a distance of 300 meters. Accordingly, a plurality of different speakers in the individual compartments is arranged, which is also a complex electronic speaker control is given.
    It is an object of the invention to provide a loudspeaker arrangement as stated above, the simplest way a two-sided sound radiation with a bundling, with a slope obliquely downward, allowing a priori no electronic intervention is required and, moreover, no measurable, undesirable Comb filter effects in the vertical radiation characteristic are present.
    The inventive speaker assembly of the type mentioned is characterized in that the speakers are arranged in the closed speaker housing with their acoustic centers substantially on a common line and inclined in the mounted position with its emission direction downwards, the closed speaker housing two inclined longitudinal walls on which the speakers are mounted.
    Such speaker arrangements, here called bipolar loudspeaker arrangements or bipolar sonic systems, are to be regarded as critical in principle, since the two speaker systems interfere with each other even when arranged at close intervals. In the present loudspeaker arrangement, however, this unwanted interference is effectively prevented by having the acoustic centers of all the drivers (loudspeakers) on a common axis or line. As a result, the aforementioned disadvantageous comb filter effects in the vertical radiation characteristic are avoided. The inclination of the two loudspeaker lines relative to one another downwards also advantageous Auslöschungen in the middle and high frequencies are achieved upwards, in addition unwanted immissions up or outside or unwanted reflections on ceilings or roofs of buildings can be avoided. The angle between the speaker lines generally determines the vertical radiation characteristic of the overall system. In the horizontal axis, the array arrangement described produces desired effects, such as a frequency-dependent convergence, which causes crosstalk to adjacent sound systems, e.g. neighboring platforms, strongly weakened. Tests have shown that, due to the line arrangement, a very good bundling of the horizontal emission of the loudspeakers is already achieved at low frequencies, which is advantageous, for example, in the sounding of platforms because crosstalk to adjacent platforms is severely restricted.
    The fact that the acoustic centers of the driver or speakers are on the same line, resulting in a total of a speaker system, which behaves essentially independent of frequency as a single speaker, but radiates in several directions. The angle of inclination between the two mutually overlapping sound lines is important for the vertical radiation characteristic of the overall system, so that by selecting the angle of the two sound lines to each other, the vertical radiation characteristic is adjustable. The horizontal radiation characteristic of the loudspeaker arrangement, however, is over its length, i. determined by the number (and possibly size) of the speakers. The longer the arrangement, the higher the degree of bundling in the horizontal.
    Overall, this results in the great advantage of the present speaker assembly that, for example, narrow, long platforms can be specifically and consistently supplied acoustically, whereas on adjacent platforms and in the environment much less sound pressure energy - in the manner of an undesirable crosstalk or in the Form of unwanted pollution - is emitted.
    The drivers or speakers are arranged offset within the speaker housing in particular by half its diameter, so as to easily arrange the acoustic centers of all drivers on a line, but the driver itself (rotationally symmetrical driver or speakers) in different directions point.
    The present speaker assembly is intended or suitable in particular for the sound of platforms. Depending on the mounting height of the speaker assembly, e.g. at a height of about 3 m, the angle of inclination of the speakers relative to the horizontal at least 5 °, preferably 20 ° to 35 °, in particular 28 °, amount.
    For a mechanically simple design of the speaker assembly, it is also advantageous if the closed speaker housing has two inclined longitudinal walls on which the speakers are mounted. In this case, a structurally advantageous embodiment is characterized in particular in that the closed loudspeaker housing is prismatic, with a trapezoidal cross section.
    To protect the individual speakers, it is further favorable when the closed speaker housing is housed in an outer housing with sound holes. It is particularly advantageous if the outer housing is in two parts, with an upper hood part and a lower sound passage hole part is formed. Here, it is also advantageous if the closed loudspeaker enclosure is secured to the upper hood part of the two-part outer housing, e.g. by means of hooks and / or screws, hanging is fixed.
    The formation of the speaker assembly with an outer housing further advantageously allows mounting using a mounting tube on the outer housing. In this case, it is also particularly advantageous if the outer housing has threaded connections for a vertical and a horizontal mounting tube. In this embodiment, both a horizontal, lateral mounting as well as an overhead mounting (or hanging mounting) of the speaker assembly is possible.
    In the present speaker assembly, the individual speakers should be as small as possible in view of the overlapping, narrow arrangement; the smaller the dimensions or distances of the speakers, the less interference occurs between the speakers or drivers. It has proven advantageous here accordingly if the loudspeakers are cone loudspeakers, in particular neodymium cone loudspeakers. The speakers are for example 3-inch Neodymkonuslautsprecher.
    By the present bipolar sound line arrangement, a two-sided radiating (s) "speaker" (speaker system) is made possible, which avoids the disadvantages of known loudspeaker arrangements, namely unwanted frequency-dependent phasing effects and level cancellations. Due to the special geometry of the arrangement, the oppositely directed radiation is added over the entire frequency range with focus down to the listening surface out, with a strong attenuation is achieved upwards. In order to avoid unwanted noise emissions into the environment are avoided, and it is a bundled (directed) radiation, for example, to ensure people in platform areas.
    The invention will be explained below with reference to the particularly advantageous embodiments, to which, however, it should not be limited, with reference to the drawings. In the drawing shows in detail:
    Fig. 1 is a perspective view of a loudspeaker arrangement according to the invention;
    FIG. 2 shows a side view of this loudspeaker arrangement, according to direction II in FIG. 1; FIG.
    Fig. 3 is a contained in the speaker assembly according to Figures 1 and 2 prismatic Lautsprechergehäu se with two rows of staggered, radiating in opposite directions speakers.
    4 shows a vertical cross section through such a loudspeaker housing with two overlapping loudspeakers, the suspension of such a loudspeaker enclosure also being illustrated schematically on one side by means of hook-shaped tabs which cooperate with associated retaining tabs inside the outer housing of the loudspeaker arrangement;
    5 shows a bottom view of this loudspeaker housing according to FIG. 4;
    Fig. 6 shows schematically a plan view of a platform between tracks, with several bilaterally radiating
    Loudspeaker arrangements approximately according to FIGS. 1 to 5; and
    Fig. 7 is a schematic side view of a mounted on a mast speaker assembly, illustrating a radiated from the speaker assembly as described sound field.
    1 and 2, a speaker assembly 1 is generally illustrated in an oblique view and side view, in particular, an outer housing 2 of the speaker assembly 1 can be seen. This outer housing 2 consists of two parts, an upper hood part 3 and a lower console part 4, also called sound passage hole part 4, which has on its two longitudinal sides of FIG. 1 schematically recognizable sound passage openings 5. The two housing parts 3, 4 are connected to one another, for example, by screwing or riveting, as is illustrated schematically in FIG. 1 at 6.
    For mounting the speaker assembly 1, for example on a mast 7, see. Fig. 6 and 7, mounting tubes 8, 9 are provided; The one lateral mounting tube allows horizontal or lateral mounting and the other upper mounting tube 9 allows overhead mounting of the loudspeaker arrangement 1. For each of the two mounting tubes 8, 9, a corresponding threaded connection 10, for example with a threaded sleeve, is provided in the hood part 3 , For example, by welding, attached.
    Of course, it is then possible, only one of the two mounting tubes 8, 9, for example, the mounting tube 8, for a lateral mounting (see Fig. 2) to install; in Fig. 2 Accordingly, the upper mounting tube 9 is shown only dashed.
    In the interior of the outer housing 2, a loudspeaker holder or closed loudspeaker housing 11 is housed in the lower console part 4, as illustrated in Fig. 2 with dashed lines. This closed speaker housing 11 is shown in more detail in FIGS. 3 to 5.
    The speaker housing 11 is a closed, in particular hermetically sealed, hermetically sealed speaker housing 11 of elongated, prismatic shape, with a trapezoidal cross-section, as can be seen in particular from FIGS. 3 and 4. This speaker housing 11 has two longitudinally extending side surfaces or walls 12, 13, which are inclined in the mounting position to the vertical by an angle α. In Fig. 4, the inclination angle a is shown as a normal angle relative to the horizontal. In the example shown, this angle α is for example between 20 ° and 35 °, in particular 28 °, in any case at least 5 °.
    Inside the speaker housing 11 are 2x4 single speakers or transducers 14, 15 housed in two rows or rows, so that there is a here referred to as a bipolar acoustic array arrangement means. The individual loudspeakers 14, 15 of the two sound lines are mutually offset by a half dimension of a loudspeaker 14 or 15, as can be seen in particular from the representation in FIG. 5, wherein the inner ends (magnetic parts) of the loudspeaker 14 or 15 overlap each other, as shown in Fig. 4 can be seen. In this case, the acoustic centers 16 of all loudspeakers, 14 as well as 15, lie on a common line or axis which, in the illustration according to FIG. 4, extends perpendicular to the plane of the drawing. Due to this arrangement, with all the acoustic centers 16 of the loudspeakers 14, 15 on one axis, a total loudspeaker system results, which can be viewed as a single loudspeaker independent of frequency, but radiates in more than one direction, namely in two directions. The emission directions are indicated in FIG. 4 by 17 and 18, respectively. The angle between the two sound lines with the overlapping loudspeakers 14, 15 determines the vertical radiation characteristic of the loudspeaker system as a whole, and accordingly the vertical radiation characteristic can be adjusted by selecting the angle α and thus the angle between the two sound lines (180 ° -a 2) , The horizontal radiation characteristic of the loudspeaker arrangement 1, however, is determined over the length, thus over the number, but also size of the loudspeakers 14, 15. The longer the loudspeaker arrangement 1 is, the stronger the bundling degree in the horizontal direction.
    In this way, it is possible to narrow, long platforms 20, s. Fig. 6 and 7, targeted and even acoustically to supply; On the other hand, unwanted crosstalk to adjacent platforms and the environment can be avoided.
    In FIGS. 6 and 7 symbolic sound fields are illustrated at 20.
    The prismatic closed speaker housing 11 has, in addition to the two longitudinal walls or surfaces 12, 13, a bottom wall 21, an upper top wall 22 and two end walls 23, 24. At the longitudinal edges of the upper top wall 22 hooks 25 are provided at intervals from each other, which are formed by upstanding tabs with horizontal slots 26 in which mating tabs are inserted in one of the two Außenge-housing parts in the assembled state, see. also exemplary, the horizontal tab 27 on the upper hood outer housing part 3 in Fig. 4. In this Fig. 4 is also one of the screw 6 between the upper housing part 3 and the lower housing part 4 schematically, with a bend of the wall of the lower Housing part 4, illustrated.
    Advantageously, for example, 3 "neodymium cone loudspeakers known as such and having, for example, a nominal load of 20 W RMS can be used for the present loudspeaker arrangement 1. Thus, the described bipolar arrangement could be operated with an amplifier power of 320 W, which is This would make it possible to use the loudspeaker arrangement 1 for sound applications where highest sound pressure levels are required.
    权利要求:
    Claims (9)
    [1]
    1. Loudspeaker arrangement (1) with a plurality of loudspeakers (14, 15) radiating in different directions, which are arranged offset in rows in a loudspeaker housing (11) in rows, characterized in that the loudspeakers (14, 15) in the closed loudspeaker housing (11 ) are arranged with their acoustic centers (16) substantially on a common line, and inclined in the mounted position with its emission direction (17, 18) obliquely downwards, wherein the closed speaker housing (11) has two inclined longitudinal walls (12, 13) where the speakers (14, 15) are mounted.
    [2]
    2. loudspeaker arrangement (1) according to claim 1, characterized in that the angle of inclination (a) of the loudspeaker (14,15) relative to the horizontal at least 5 °, preferably 20 ° to 35 °, in particular 28 °.
    [3]
    3. loudspeaker arrangement (1) according to claim 1, characterized in that the closed loudspeaker housing (11) prismatic, with a trapezoidal cross-section, is executed.
    [4]
    4. loudspeaker arrangement (1) according to one of claims 1 to 3, characterized in that the closed loudspeaker housing (11) in an outer housing (2) with sound openings (5) is housed.
    [5]
    5. loudspeaker arrangement (1) according to claim 4, characterized in that the outer housing (2) in two parts, with an upper hood part (3) and a lower sound passage hole part (4) is formed.
    [6]
    6. loudspeaker arrangement (1) according to claim 5, characterized in that the closed loudspeaker housing (11) on the upper hood part (3) of the two-part outer housing (2), e.g. by means of hooks (25) and / or screws, hanging fixed.
    [7]
    7. loudspeaker arrangement (1) according to one of claims 4 to 6, characterized in that the outer housing (2) has at least one mounting tube (8, 9).
    [8]
    8. loudspeaker arrangement (1) according to claim 7, characterized in that the outer housing (2) has threaded connections (10) for a vertical (9) and a horizontal (8) mounting tube.
    [9]
    9. loudspeaker arrangement (1) according to one of claims 1 to 8, characterized in that the speakers (14, 15) cone speakers, in particular Neodymkonuslautsprecher are.
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    同族专利:
    公开号 | 公开日
    DE202015005705U1|2015-10-13|
    AT516305B1|2018-04-15|
    AT516305A1|2016-04-15|
    CH710048A2|2016-02-29|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US6016353A|1997-08-29|2000-01-18|Eastern Acoustic Works, Inc.|Large scale sound reproduction system having cross-cabinet horizontal array of horn elements|
    ES2653671T3|2006-10-16|2018-02-08|Thx Ltd|Audio and power distribution system|
    DE102010010309A1|2010-03-04|2011-09-08|Visaton Gmbh & Co. Kg|Speaker arrangement installed in station hall, has planar acoustic baffle having apertures in which wideband speakers are arranged, which is provided in sound radiating cabinet, by forming dipole radiator in sound radiating cabinet|
    CN202679586U|2012-07-19|2013-01-16|嘉兴中科声学科技有限公司|A directional sound source system|
    法律状态:
    2020-09-30| PFA| Name/firm changed|Owner name: ITEC TONTECHNIK UND INDUSTRIEELEKTRONIK GESELL, AT Free format text: FORMER OWNER: ITEC TONTECHNIK UND INDUSTRIEELEKTRONIK GESELLSCHAFT M.B.H., AT |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50584/2014A|AT516305B1|2014-08-22|2014-08-22|Speaker layout|
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