CN201142756Y

CN201142756Y - Line array type loudspeaker

Info

Publication number: CN201142756Y
Application number: CNU2008200426979U
Authority: CN
Inventors: 陈健俊
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-01-10
Filing date: 2008-01-10
Publication date: 2008-10-29
Anticipated expiration: 2018-01-10

Abstract

The utility model relates to a linear array speaker which comprises a box body, at least one high-frequency loud-speaking unit, at least one medium-frequency loud-speaking unit, and at least one low-frequency loud-speaking unit. The high-frequency loud-speaking units are disposed in the box body side by side, conical acoustic horns are respectively disposed at the front ends of the high-frequency loud-speaking units, and constant directivity acoustic horns are respectively disposed at the front ends of conical acoustic horns; the medium-frequency loud-speaking units are disposed in the box body side by side, and constant directivity acoustic horns are respectively disposed at the front ends of the medium-frequency loud-speaking units; and the low-frequency loud-speaking units are disposed in the box body side by side. The linear array speaker can satisfy the conditions for forming a linear array and can produce a wavefront with adjustable horizontal beam wave width and curve degree in the vertical direction, the sound field distribution in a loud-speaking region is conveniently adjusted, and the horizontal wave beam width can be arbitrarily changed in a certain range. The speaker has the advantages of convenient application, and simple and reasonable structure.

Description

A kind of linear array formula loud speaker

Technical field

The utility model relates to a kind of linear array loud speaker.

Background technology

At present, in carrying out the public address application of big place, distribute in order to make audience area obtain more uniform acoustic pressure, most of sound reinforcement system can be used linear array formula loud speaker.Traditional linear array loud speaker adopts split-type design, is made of the loud speaker of many independent case body.In use, need will many independently loud speaker stack and come together to form one and be listed as and produce the direction cylindrical wave.But, then be unfavorable for the sound field uniformity is made adjustment, for use brings certain restriction and inconvenience because traditional wire array speaker beamwidth relative fixed in the horizontal direction cannot change beamwidth.

The utility model content

The purpose of this utility model is to solve above-mentioned existing problems, a kind of condition that linear array forms that both satisfied is provided, can produce again horizontal beam width adjustable, vertical direction has the wavefront of flexibility, the convenient sound field of adjusting the public address district distributes, can change horizontal beam width within the specific limits arbitrarily, and linear array loud speaker easy to use, rational in infrastructure, simple.

The technical solution of the utility model is achieved in that

A kind of linear array formula loud speaker, its characteristics are to comprise casing, at least one high frequency speaker unit, at least one intermediate frequency speaker unit and at least one low frequency speaker unit, wherein each high frequency speaker unit is installed in the casing side by side, and be respectively equipped with the taper horn at the front end that is positioned at each high frequency speaker unit, and the front end at each taper horn also is provided with constant directivity horn, described each intermediate frequency speaker unit is installed in the casing side by side, and also be provided with constant directivity horn at each intermediate frequency speaker unit front end, described each low frequency speaker unit is installed on the casing side by side.

Wherein, above-mentioned each high frequency speaker unit is and laterally is installed on side by side in the casing top, each taper horn correspondence is arranged at each high frequency speaker unit front end face and connects as one with each high frequency speaker unit, and have the last slotted eye of installing for constant directivity horn on the casing corresponding to each taper horn front end, above-mentioned constant directivity horn is inlaid in the last slotted eye of casing accordingly; Above-mentioned each intermediate frequency speaker unit is the horizontal casing that is arranged in high frequency speaker unit below that is installed in side by side, and having the middle slotted eye of installing for constant directivity horn on the casing corresponding to each intermediate frequency speaker unit front end, above-mentioned constant directivity horn is inlaid in the middle slotted eye of casing accordingly; Per two low frequency speaker unit of above-mentioned each low frequency speaker unit are and laterally are arranged into one group of low frequency speaker unit group, and each low frequency speaker unit group is by being installed on the casing that is positioned at intermediate frequency speaker unit below down to being vertical arrangement down.

The utility model is owing to adopt the high frequency speaker unit at loud speaker to be provided with taper horn and constant directivity horn, be provided with constant directivity horn and with height in the intermediate frequency speaker unit, in, low speaker unit all is arranged on a structure in the casing, make the utility model obtain beneficial effect to be: one, the waveguide of using taper horn and constant directivity horn to combine at HFS, this waveguide can change the flexibility of vertical cross-section wavefront by the length that changes tapering part, this wavefront that has the slight bending degree, help controlling the sound directivity of stage front end near-field region, simultaneously, because all loudspeaker units are all in same casing, can effectively reduce the interference between the loudspeaker unit, improve the uniformity of public address zone sound field; Two, the array Driving technique with the utility model and linear array speaker system is used, can allow the user needn't consider the influence of frequency, only need to change the parameter of filter, define the relation between effective acoustic length of necessary wavelength and array voluntarily, can change wave beam width in the horizontal direction within the specific limits arbitrarily, conveniently whole line-array systems directive property be made adjustment; Three, the utility model is used in combination with the digital filtering controller that has FIR (finite impulse response (FIR)) technology again, utilize this digital filtering controller can change the phase place of output signal and the relevance between the amplitude, make that the response of the phase response of loud speaker and amplitude can independent design, be beneficial to and design desirable speaker system response.Moreover the utility model is very easy to use, and structure also rationally, simply.

Below in conjunction with accompanying drawing the utility model is further described:

Description of drawings

Fig. 1 is the utility model perspective view.

Fig. 2 is the Facad structure schematic diagram of the utility model casing.

Fig. 3 is the sectional structure schematic diagram of the utility model casing.

Embodiment

As Fig. 1, Fig. 2 and shown in Figure 3, a kind of linear array formula loud speaker described in the utility model, it comprises casing 1, at least one high frequency speaker unit 2, at least one intermediate frequency speaker unit 3 and at least one low frequency speaker unit 4, wherein each high frequency speaker unit 2 is installed in the casing 1 side by side, and be respectively equipped with taper horn 5 at the front end that is positioned at each high frequency speaker unit 2, and the front end at each taper horn 5 also is provided with constant directivity horn 6, described each intermediate frequency speaker unit 3 is installed in the casing 1 side by side, and also be provided with constant directivity horn 6 at each intermediate frequency speaker unit 3 front end, described each low frequency speaker unit 4 is installed on the casing 1 side by side.Design obtains beneficial effect and is like this: one, the waveguide of using taper horn and constant directivity horn to combine at HFS, this waveguide can change the flexibility of vertical cross-section wavefront by the length that changes tapering part, this wavefront that has the slight bending degree, help controlling the sound directivity of stage front end near-field region, simultaneously, because all loudspeaker units are all in same casing, can effectively reduce the interference between the loudspeaker unit, improve the uniformity of public address zone sound field; Two, the array Driving technique with the utility model and linear array speaker system is used, can allow the user needn't consider the influence of frequency, only need to change the parameter of filter, define the relation between effective acoustic length of necessary wavelength and array voluntarily, can change wave beam width in the horizontal direction within the specific limits arbitrarily, conveniently whole line-array systems directive property be made adjustment; Three, the utility model is used in combination with the digital filtering controller that has FIR (finite impulse response (FIR)) technology again, utilize this digital filtering controller can change the phase place of output signal and the relevance between the amplitude, make that the response of the phase response of loud speaker and amplitude can independent design, be beneficial to and design desirable speaker system response.For obtaining better sound field directive property, as shown in Figure 1 to Figure 3, described each high frequency speaker unit 2 generally is and laterally is installed on side by side in casing 1 top, each taper horn 5 correspondence is arranged at each high frequency speaker unit 2 front end face and connects as one with each high frequency speaker unit 2, and have the last slotted eye of installing for constant directivity horn 6 11 on the casing 1 corresponding to each taper horn 5 front end, described constant directivity horn 6 is inlaid in the last slotted eye 11 of casing 1 accordingly.Simultaneously, for making the 5 easier fixing and installations of taper horn, make the conjoined structure of side-by-side between described each taper horn 5, be the taper horn with the taper horn between be connected side by side as a whole, each high frequency speaker unit 2 is installed on each taper horn 5 accordingly, becomes one with each taper horn 5.Described each intermediate frequency speaker unit 3 then is the horizontal casing 1 that is arranged in high frequency speaker unit 2 belows that is installed in side by side, and having the middle slotted eye of installing for constant directivity horn 6 12 on the casing 1 corresponding to each intermediate frequency speaker unit 3 front end, described constant directivity horn 6 is inlaid in the middle slotted eye 12 of casing 1 accordingly.For making constant directivity horn 6 can obtain preferable sound field directive property, as shown in Figure 1, described constant directivity horn 6 is the horn of rectangle horn structure.Described each low frequency speaker unit 4 then is with per two low frequency speaker unit 4 and laterally is arranged into one group of low frequency speaker unit group, and each low frequency speaker unit group is vertical arrangement from top to bottom is installed on the casing 1 that is positioned at intermediate frequency speaker unit 3 belows.As shown in Figure 1, in the present embodiment, employing is respectively arranged with three and is the high frequency speaker unit 2 of laterally installing side by side on casing 1, two are the intermediate frequency speaker unit 3 of laterally installing side by side, four groups are the low frequency speaker unit group that laterally is arranged into per two low frequency speaker unit 4, have slotted eye 11 on the front plate of this casing 1 from top to bottom respectively accordingly, middle slotted eye 12, and eight following slotted eyes 13 for low frequency speaker unit 4 setting-ins, described high frequency speaker unit 2, intermediate frequency speaker unit 3, low frequency speaker unit 4 is installed in the slotted eye 11 respectively accordingly, in the middle slotted eye 12, one of assembling formation has height on the following slotted eye 13, in, the linear array formula loud speaker body of low frequency is as a specific embodiment structure.The utility model can according to the aforementioned structure mode, design and produce any size and the indefinite loud speaker of high, medium and low speaker unit quantity according to using actual needs.For making the separate work in high, medium and low unit, not disturbing mutually, as Fig. 2, Fig. 3 and shown in Figure 1, described casing 1 is separated out separate speaker unit chamber 14, speaker unit chamber 15, speaker unit chamber 16 corresponding to last slotted eye 11, middle slotted eye 12, following 13 of slotted eyes, and wherein speaker unit chamber 16 can per two groups of low frequency speaker unit components be divided into upper and lower two chambers again.Meanwhile, have higher structural strength, as shown in Figure 3, in the chamber of casing 1, also be provided with the stiffening plate 17 that some play the structural strength of strengthening casing 1 accordingly for making casing 1.

Claims

1, a kind of linear array formula loud speaker, it is characterized in that comprising casing (1), at least one high frequency speaker unit (2), at least one intermediate frequency speaker unit (3) and at least one low frequency speaker unit (4), wherein each high frequency speaker unit (2) is installed in the casing (1) side by side, and be respectively equipped with taper horn (5) at the front end that is positioned at each high frequency speaker unit (2), and the front end at each taper horn (5) also is provided with constant directivity horn (6), described each intermediate frequency speaker unit (3) is installed in the casing (1) side by side, and also be provided with constant directivity horn (6) at each intermediate frequency speaker unit (3) front end, described each low frequency speaker unit (4) is installed on the casing (1) side by side.

2, according to the described linear array formula of claim 1 loud speaker, it is characterized in that above-mentioned each high frequency speaker unit (2) is laterally is installed in casing (1) top side by side, each taper horn (5) correspondence is arranged at each high frequency speaker unit (2) front end face and connects as one with each high frequency speaker unit (2), and have the last slotted eye of installing for constant directivity horn (6) (11) on the casing (1) corresponding to each taper horn (5) front end, above-mentioned constant directivity horn (6) is inlaid in the last slotted eye (11) of casing (1) accordingly.

3,, it is characterized in that connecting as one side by side between above-mentioned each taper horn (5) according to claim 1 or 2 described linear array formula loud speakers.

4, according to the described linear array formula of claim 1 loud speaker, it is characterized in that above-mentioned each intermediate frequency speaker unit (3) is laterally is installed in the casing (1) that is arranged in high frequency speaker unit (2) below side by side, and having the middle slotted eye of installing for constant directivity horn (6) (12) on the casing (1) corresponding to each intermediate frequency speaker unit (3) front end, above-mentioned constant directivity horn (6) is inlaid in the middle slotted eye (12) of casing (1) accordingly.

5, according to claim 1 or 2 or 4 described linear array formula loud speakers, it is characterized in that above-mentioned constant directivity horn (6) is the horn of rectangle horn structure.

6, according to the described linear array formula of claim 1 loud speaker, per two the low frequency speaker unit (4) that it is characterized in that above-mentioned each low frequency speaker unit (4) are and laterally are arranged into one group of low frequency speaker unit group, and each low frequency speaker unit group is vertical arrangement from top to bottom and is installed on the casing (1) that is positioned at intermediate frequency speaker unit (3) below.

7, according to claim 1 or 2 or 4 or 6 described linear array formula loud speakers, it is characterized in that being respectively arranged with on the above-mentioned casing (1) three and be the high frequency speaker unit (2) of laterally installing side by side, two are the intermediate frequency speaker unit (3) of laterally installing side by side, four groups are the low frequency speaker unit group that laterally is arranged into per two low frequency speaker unit (4), have slotted eye (11) on the front plate of this casing (1) from top to bottom respectively accordingly, middle slotted eye (12), and eight following slotted eyes (13) for low frequency speaker unit (4) setting-in, described high frequency speaker unit (2), intermediate frequency speaker unit (3), low frequency speaker unit (4) is installed in respectively in the slotted eye (11) accordingly, in the middle slotted eye (12), following slotted eye (13) is gone up one of assembling formation and is had height, in, the linear array formula loud speaker body of low frequency.

8,, it is characterized in that above-mentioned casing (1) is corresponding to being separated out separate speaker unit chamber (14,15,16) between last slotted eye (11), middle slotted eye (12), following slotted eye (13) according to the described linear array formula of claim 7 loud speaker.