CN114422911A

CN114422911A - Linear array sound box with coaxial loudspeaker and high-pitch horn combination

Info

Publication number: CN114422911A
Application number: CN202210154770.6A
Authority: CN
Inventors: 顾康
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-02-21
Filing date: 2022-02-21
Publication date: 2022-04-29

Abstract

The invention discloses a linear array sound box with a combination of coaxial loudspeakers and high-pitch horns, which comprises a sound box main body arranged horizontally, wherein a plurality of coaxial loudspeakers arranged horizontally are arranged on the front side of the sound box main body, the coaxial loudspeakers are uniformly distributed on the same horizontal plane, the coaxial loudspeakers are arranged in a fan shape, a plurality of high-pitch horns are arranged on the front side of the sound box main body, and phase plugs are arranged in the high-pitch horns. The invention has simple structure, the sound emitted by the high pitch becomes a sound column like a light-gathering flashlight, the sound is strengthened in the horizontal directivity direction, the sound pressure level of the high pitch is immediately attenuated after exceeding the fan-shaped angle, namely the attenuation degree is very large, and the mutual interference of the sound among the sound boxes can be avoided as much as possible when the sound is amplified in the large-space long reverberation environment, thereby achieving the purpose of improving the speech sound amplification definition.

Description

Linear array sound box with coaxial loudspeaker and high-pitch horn combination

Technical Field

The invention relates to the technical field of sound boxes, in particular to a linear array sound box combining a coaxial loudspeaker and a high-pitch horn.

Background

The linear array loudspeaker boxes on the market at present have the following: 1. a single treble constitutes a linear array treble horn as shown in fig. 1. 2. A plurality of small treble bars are vertically arranged to form a linear array of treble and horn, as shown in fig. 2. 3. One or two woofers are mounted on the loudspeaker box, and a high horn is mounted beside the woofers, as shown in figure 3. 4. The box body is a vertical linear sound box, and the high-pitch sound wave emitted by a single sound box is flat, as shown in figure 4. 5. A dual bass line array loudspeaker as shown in figure 5. The sound columns in the market at present are as follows: 1. the same linear array of small loudspeakers is used for making the shape narrow, so that the small loudspeakers can be used as high pitch and low pitch, and the small loudspeakers are vertically arranged to form a linear array loudspeaker box, as shown in the attached figure 6. 2. The linear array sound post composed of the bass and the linear array treble is vertically arranged by a slightly larger woofer, and a linear array treble is specially matched for the reasons of high frequency offset among loudspeakers and the like due to the problem of high frequency wavelength, and it is worth noting that only one tweeter of each linear array sound box is transversely arranged, if a plurality of tweeters exist, the tweeters are also vertically arranged, and only then, the treble can be opened to a horizontal angle, as shown in the attached figures 7 and 8. In a word, no matter which kind of linear array loudspeaker's tweeter is put, the horizontal direction is arranged and all is single one, and the vertical direction can be a plurality of, can guarantee like this to maintain horizontal direction high pitch angle and tone quality, if the horizontal direction is arranged and has the high pitch more than two, the angle of high pitch will influence because of the mutual harmful interference of high pitch level, and the horizontal angle can become narrow and the harmony audio effect is worsened.

In terms of the directivity in the horizontal direction of sound, the directivity of the angle control in the horizontal direction of the treble of the conventional linear array loudspeaker is the same as the directivity of the ordinary treble horn of the conventional loudspeaker, i.e. the directivity is not strong, including bass, and the directivity in the horizontal direction of bass is not ideal because the horizontal arrangement is at most two bass.

Therefore, there is a need for improvements in the prior art to avoid the disadvantages of the prior art.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a linear array sound box combined by a coaxial loudspeaker and a high-pitch horn, which has strong horizontal directional directivity of sound and improves the speech sound expansion definition.

The invention is realized by the following technical scheme:

the utility model provides a linear array audio amplifier of coaxial loudspeaker and high pitch horn combination, includes the audio amplifier main part that the level set up, the coaxial loudspeaker that a plurality of levels were put are installed to the front side of audio amplifier main part, coaxial loudspeaker equipartition sets up on same horizontal plane, coaxial loudspeaker are fan-shaped and put, a plurality of high pitch horns are installed to the front side of audio amplifier main part, be equipped with the phase plug in the high pitch horn.

Further, the high pitch horn is mounted inside the coaxial horn.

Further, the high pitch horn is arranged between the adjacent coaxial loudspeakers.

Further, the high pitch horn is arranged on the upper side of the coaxial loudspeaker.

Further, the shape of the inner wall of the high-pitch horn is matched with the shape of the outer wall of the phase plug.

Further, the linear array sound box is formed by vertically stacking a plurality of sound box main bodies.

Furthermore, the sound outlet angle of the high-pitch horn is 3-10 degrees.

Furthermore, an included angle formed between the adjacent coaxial horns is 5-15 degrees.

Furthermore, the high-low factor frequency dividing point of the high-pitch horn of the coaxial loudspeaker is set to be 900Hz to 1100 Hz.

Further, the tweeter angle compression driver of the coaxial horn exceeds 51 cores.

Compared with the prior art, the loudspeaker box has the advantages that the plurality of horizontal coaxial loudspeakers are installed on the front side of the loudspeaker box body, the coaxial loudspeakers are uniformly distributed on the same horizontal plane, the coaxial loudspeakers are arranged in a fan shape, the plurality of high-pitch horn angles are installed on the front side of the loudspeaker box body, the phase plugs are arranged in the high-pitch horn angles, sound emitted by high pitches is like a light-gathering flashlight and becomes a sound column, the horizontal directivity direction of the sound is strengthened, the sound pressure level of the high pitches is attenuated immediately after the sound exceeds the fan-shaped angle, namely the attenuation degree is high, when sound amplification is carried out in a large-space long reverberation environment, the mutual interference of the sound among the loudspeaker boxes can be avoided as much as possible, and the purpose of improving the speech sound amplification definition is achieved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of a prior art linear array tweeter horn formed from a single tweeter;

FIG. 2 is a schematic structural diagram of a prior art linear array of treble and horn formed by multiple vertically arranged small treble;

FIG. 3 is a schematic view of a prior art loudspeaker box with one or two woofers and a tweeter horn positioned adjacent thereto;

FIG. 4 is a schematic view of a prior art enclosure with a vertically linear enclosure;

FIG. 5 is a schematic diagram of a prior art dual bass line array loudspeaker;

FIG. 6 is a schematic structural diagram of a prior art linear array of small horns;

FIG. 7 is a schematic diagram of a first prior art linear array of columns comprising bass and linear array treble;

FIG. 8 is a second schematic diagram of a linear array of columns formed by bass and linear array treble according to the prior art

FIG. 9 is a front view of a first embodiment of a linear array loudspeaker in combination with a tweeter horn in accordance with the present invention;

FIG. 10 is a top view of a first embodiment of a linear array loudspeaker in combination with a tweeter horn in accordance with the present invention;

FIG. 11 is a front view of a second embodiment of the linear array loudspeaker of the present invention having a coaxial horn in combination with a tweeter horn;

FIG. 12 is a top view of a second embodiment of the linear array loudspeaker of the present invention having a coaxial horn in combination with a tweeter horn;

FIG. 13 is a front view of a third embodiment of the linear array loudspeaker in combination with a tweeter horn in accordance with the present invention;

FIG. 14 is a top view of a third embodiment of the linear array loudspeaker in combination with a tweeter horn in accordance with the present invention;

FIG. 15 is a schematic cross-sectional view of a high horn of the present invention;

FIG. 16 is a cross-sectional view of a high horn of the present invention;

FIG. 17 is an acoustic projection of a first embodiment of the linear array loudspeaker of the present invention having a coaxial horn in combination with a tweeter horn;

fig. 18 is an acoustic projection view of a conventional linear speaker provided with the same horn as that of the first embodiment.

In the figure: 1-a main body of the sound box; 2-a coaxial horn; 3-high pitch horn; 4-phase plug.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 9 to 18, the linear array sound box with a combination of coaxial speakers and tweeters of the present invention includes a sound box body 1 horizontally disposed, a plurality of coaxial speakers 2 horizontally disposed are installed on the front side of the sound box body 1, the coaxial speakers 2 are uniformly distributed on the same horizontal plane, the coaxial speakers 2 are disposed in a fan shape, a plurality of tweeters 3 are installed on the front side of the sound box body 1, and phase plugs 4 are installed in the tweeters 3. Install the coaxial loudspeaker 2 that a plurality of levels were put through the front side of audio amplifier main part 1, coaxial loudspeaker 2 equipartition sets up on same horizontal plane, coaxial loudspeaker 2 is fan-shaped and puts, a plurality of high pitch horn 3 are installed to the front side of audio amplifier main part 1, be equipped with phase plug 4 in the high pitch horn 3, the sound that the high pitch was sent is like spotlight flashlight, become a sound column, make sound obtain strengthening at horizontal directive property direction, exceed fan-shaped angle after, high pitch sound pressure level can attenuate at once, the attenuation degree is very big promptly, when amplifying in the long reverberation environment in big space, can avoid the mutual interference of sound between the audio amplifier as far as possible, reach the purpose that improves language and expand the sound definition.

The shape of the inner wall of the high-pitch horn 3 is matched with the shape of the outer wall of the phase plug 4, so that the pronunciation uniformity of the high-pitch horn is improved, the pronunciation of the high-pitch horn is tightened to a projection angle, and the mutual interference is reduced.

In specific implementation, the linear array sound box is formed by vertically stacking a plurality of sound box main bodies 1, and the speech sound expansion definition effect of the linear array sound box is enhanced.

In specific implementation, the sound outlet angle of the high-pitch horn 3 is 3-10 degrees.

In specific implementation, the included angle formed between the adjacent coaxial horns 2 is 5-15 degrees.

In the specific implementation, the high-low factor frequency dividing point of the high-pitch horn 3 of the coaxial loudspeaker 2 is set to be 900Hz to 1100Hz, so that the low-pitch loudspeaker is easier to be acoustically coupled from the aspect of hearing, and the hearing effect is better.

In the specific implementation, the high horn compression driver of the coaxial loudspeaker 3 exceeds 51 cores, so that the bass loudspeaker is easier to be acoustically coupled from the aspect of hearing, and the hearing effect is better.

First embodiment

The high pitch horn 3 is installed in the inner side of the coaxial loudspeaker 2, a plurality of bass horizontal arrangement, through the beneficial interference of bass, the bass horizontal directivity is strengthened, and the high pitch sound wave that forms is flat fan-shaped.

Second embodiment

The high pitch horn 3 is arranged on the upper side of the coaxial loudspeaker 2, so that the upward directivity of sound is enhanced, and the mutual interference of sound among sound boxes can be avoided as much as possible when sound amplification is carried out in a large-space long reverberation environment, so that the purpose of improving the speech sound amplification definition is achieved.

Third embodiment

The high pitch horn 3 is arranged between the adjacent coaxial loudspeakers 2, so that the vertical directivity of sound is enhanced, and the mutual interference of sound between the sound boxes can be avoided as much as possible when sound amplification is carried out in a large-space long reverberation environment, so that the purpose of improving the speech sound amplification definition is achieved.

The essential difference between this patent and the existing linear array loudspeaker is that, from the appearance structure, the high-pitch horn in a single loudspeaker can be arranged in the horizontal direction, instead of one, as shown in fig. 9 and fig. 10. This is because each high tone is emitted at a narrow angle and thus they do not interfere with each other. Fig. 17 is a perspective view of the first embodiment of sound showing each circle representing each tweeter projection area of the patent as if the spot light torch were directed onto the wall as a large dot if each tweeter area (circle) is aligned horizontally to form an elongated tweeter area. In the dark regions on the left and right sides, the sound is reduced by a sound diffusion range of less than-6 dB, except for the left and right edges of the sound region. The linear array loudspeaker treble projection area (shaded area) can be compared, as shown in fig. 18, in contrast, the length of the shaded area of fig. 17 is very short, which indicates that the directivity of the high pitch level angle of the present patent is enhanced, that is, the sound emitted by the present patent loudspeaker becomes very small every distance away from the planned sound area.

In the following explanation of the listening area of the single loudspeaker box of this patent, which is in view of the sound produced by the loudspeaker box, as shown in fig. 17, the schematic view of the "projected" shape of the high-pitched horizontally produced sound of the 6 horizontally aligned coaxial horn loudspeaker boxes is shown in fig. 17, and it can be seen from this figure that if a plurality of loudspeaker boxes are vertically aligned, there is no overlap between the horizontal and vertical directions in the circular area of the high-pitched listening area. As seen from the high-pitch horizontal sector arrangement projection area of a single sound box, a plurality of horizontal circular listening areas form a strip-shaped overall listening area. And the left and right ends of each treble region have ghost images (shaded), which means that the sensitivity of less than-6 dB sound is reduced quickly to a range of less than-12 dB sound as long as the treble region is away from a little.

The meaning that the sound beyond the range of the listening area is reduced quickly is that the listening area which does not need to be attended to does not need to have sound, so that the reflected sound of the sound can be reduced to the greatest extent, and the sound in the listening area is clear.

Detailed description of the preferred embodiments

A sound box body capable of accommodating 6 coaxial loudspeakers of 12 inches and horizontally swinging is made. Because the diameter of each horn is 31 cm, the length of the panel of the sound box is more than 31 multiplied by 6 cm. Here, a 2 m long wooden sound box is made, and 6 coaxial loudspeakers as claimed in the patent are installed in the 36 high wooden sound box, and a phase plug is arranged in the high horn. Each horn is horizontally fan-shaped at 10 degrees, and a horizontally high-pitched sound projection angle with a horizontal angle of more than 60 degrees is formed according to the actual measurement result, as shown in fig. 9.

A hole with the diameter of 26 mm is formed in the center of the ladder iron of the coaxial loudspeaker, a common plastic high-pitch horn is inlaid from the center of the cone and the center of the voice coil, and the coaxial loudspeaker is the same as the common coaxial loudspeaker. At this time, 3 supports like the tail wing of the airplane are mounted on one prepared phase plug, and the phase plug and the horn mouth are fixed in position and are firmly fixed by glue. Allowing treble to emanate from the periphery of the phase plug as shown in fig. 9. Then the prepared coaxial loudspeaker is arranged in the box body, and the design of internal frequency division or external frequency division can be carried out. The box body can be made into a plurality of boxes which are orderly stacked perpendicular to the ground, and the purpose of improving the speech sound expanding definition can be achieved.

Specifically, the high pitch of the coaxial speaker is preferably set to about 1kHz by using a compression driver having a core exceeding 51 cores. The bass loudspeaker is easier to be acoustically coupled from the aspect of hearing, and the hearing effect is better.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a linear array audio amplifier of coaxial loudspeaker and high pitch horn combination which characterized in that: the audio amplifier main part that sets up including the level, the coaxial loudspeaker that a plurality of levels were put are installed to the front side of audio amplifier main part, the coaxial loudspeaker equipartition sets up on same horizontal plane, coaxial loudspeaker is fan-shaped and puts, a plurality of high pitch horn are installed to the front side of audio amplifier main part, be equipped with the phase plug in the high pitch horn.

2. The linear array loudspeaker in combination with a tweeter horn of claim 1, wherein: the high pitch horn is mounted on the inner side of the coaxial horn.

3. The linear array loudspeaker in combination with a tweeter horn of claim 1, wherein: the high pitch horn is arranged between the adjacent coaxial loudspeakers.

4. The linear array loudspeaker in combination with a tweeter horn of claim 1, wherein: the high pitch horn is arranged on the upper side of the coaxial loudspeaker.

5. The linear array loudspeaker in combination with a tweeter horn of claim 1, wherein: the shape of the inner wall of the high-pitch horn is matched with the shape of the outer wall of the phase plug.

6. The linear array loudspeaker in combination with a tweeter horn of claim 1, wherein: the linear array sound box is formed by vertically superposing a plurality of sound box main bodies.

7. The linear array loudspeaker in combination with a tweeter horn of claim 1, wherein: the sound outlet angle of the high-pitch horn is 3-10 degrees.

8. The linear array loudspeaker in combination with a tweeter horn of claim 1, wherein: the included angle formed between the adjacent coaxial horns is 5-15 degrees.

9. The linear array loudspeaker in combination with a tweeter horn of claim 1, wherein: the high-low factor frequency dividing point of the high-pitch horn of the coaxial loudspeaker is set to be 900 Hz-1100 Hz.

10. The linear array loudspeaker in combination with a tweeter horn of claim 1, wherein: the tweeter horn of the coaxial horn compresses the driver beyond the 51 core.