Horn diffusion structure

Abstract

The utility model relates to a horn diffusion structure, which comprises a sound wave guide tube with a gradually enlarged cross section, the lower end of the sound wave guide tube is in butt joint with a sound inlet seat with a sound inlet hole, the upper end of the sound wave guide tube is in butt joint with a sound outlet seat with a sound outlet hole, and the top of the sound outlet seat is provided with a diffusion part. A first phase plug in the middle of the sound wave guide pipe symmetrically divides the sound wave guide pipe into left and right guide compression channels, and second and third phase plugs are further arranged on the sound wave guide pipe. A plurality of pairs of guide partition plates along the inner wall of the sound wave guide pipe divide the interior into a plurality of linear sound guide branch pipes, and diffusion tooth structures matched with the sound outlet holes are formed at the top ends of the guide partition plates and are communicated with the diffusion part to enhance the vertical diffusion directivity of sound waves. The phase plug adopts a rhombic section and precise angle design, and the sound wave compression function is integrated while sound wave shunt guiding is achieved. The first phase plug and the inner wall of the sound wave guide pipe form a compression cavity structure, sound wave energy is compressed in a concentrated mode through a gradually-shrinking channel, and a high-density sound beam is formed. The utility model is suitable for professional sound equipment, stage sound amplification equipment and other equipment requiring long-distance projection and stereo field coverage.

Description

TECHNICAL FIELD

[0001] The utility model relates to loudspeaker technical field, especially a horn diffusion structure, realizes the layered diffusion of sound wave through multistage phase plug and guide baffle. BACKGROUND

[0002] In the modern audio technology field, the sound wave diffusion efficiency and the tone performance of the loudspeaker are always the core direction of research. The traditional horn loudspeaker generates sound waves through diaphragm vibration, and amplifies the sound wave energy by using horn structure, but the propagation path of the sound wave in the horn is complex, which is easy to produce reflection, interference and distortion, resulting in uneven high frequency response, limited sound field coverage and other problems.

[0003] In the prior art, part of the horn uses a single phase plug or a simple baffle to guide the sound wave, but has the following limitations:

[0004] Insufficient sound wave layering: a single phase plug can only achieve preliminary sound wave segmentation, and cannot finely control the propagation path of sound waves of different frequency bands, resulting in interference of high frequency sound waves in the conduit.

[0005] Limited diffusion effect: the diffusion teeth of the traditional guide structure do not cooperate well with the sound hole, and the sound wave cannot form uniform coverage after being output through the sound hole, especially when wideband sound wave propagates.

[0006] Poor structural stability: the guide baffle is usually fixed by gluing or simple buckle, which is easy to loosen due to vibration after long-term use, resulting in sound wave guiding failure.

[0007] In view of the deficiencies of the prior art, a horn structure is needed to realize the layered diffusion of sound wave through multistage phase plug and guide baffle, which solves the technical problem of sound wave layered diffusion. UTILITY MODEL CONTENTS

[0008] The utility model aims at providing a horn diffusion structure, which realizes the layered diffusion and uniform coverage of sound wave through the combined design of multistage phase plug and gradually expanding guide baffle, and is suitable for high-fidelity sound system.

[0009] In order to realize the above purpose, the utility model is realized through the following technical scheme: a horn diffusion structure, comprising:

[0010] A sound wave conduit arranged longitudinally, the cross section of which gradually expands from bottom to top;

[0011] A sound inlet seat horizontally butted to the lower end of the sound wave conduit; the sound inlet seat is provided with a sound inlet hole in the middle;

[0012] A sound outlet seat horizontally butted to the upper end of the sound wave conduit; the sound outlet seat is provided with a sound outlet hole in the middle;

[0013] A diffusion part arranged on the top of the sound outlet seat;

[0014] A first phase plug fixed in the middle of the sound wave guide and symmetrically dividing the sound wave guide into left and right guide compression channels;

[0015] A plurality of pairs of guide baffles vertically arranged along the inner wall of the sound wave guide, the guide baffles symmetrically distributed on both sides of the first phase plug and dividing the sound wave guide into a plurality of linear sound guide branch pipes; the top end of the guide baffles extends to the lower end surface of the sound outlet seat, forming a diffusion tooth structure matched with the sound outlet hole; the diffusion tooth structure is communicated with the diffusion part.

[0016] Further as the improvement of the technical scheme of the utility model, the sound wave guide is further provided with a second phase plug and a third phase plug; the second phase plug and the third phase plug are arranged on the left and right sides of the first phase plug in up-down arrangement; the second phase plug and the third phase plug are matched with the plurality of pairs of guide baffles vertically arranged along the inner wall of the sound wave guide, and divide the sound wave guide into a plurality of linear sound guide branch pipes.

[0017] Further as the improvement of the technical scheme of the utility model, the bottom end of the first phase plug is flush with the lower end surface of the sound inlet hole, and the top end extends to the upper end surface of the sound outlet hole.

[0018] Further as the improvement of the technical scheme of the utility model, the sound inlet seat comprises an upper sound inlet plate and a lower sound inlet plate in T-shaped cross section.

[0019] Further as the improvement of the technical scheme of the utility model, the sound outlet seat is a cuboid structure.

[0020] Further as the improvement of the technical scheme of the utility model, the first phase plug is in rhombic cross section, and the top angle and the bottom angle are both acute angles.

[0021] Further as the improvement of the technical scheme of the utility model, the front and rear surfaces of the sound wave guide are symmetrically provided with splayed mounting grooves, and the guide baffles are fixed through auxiliary bolts.

[0022] Further as the improvement of the technical scheme of the utility model, the number of the guide baffles is 6-10 pairs, the distance between adjacent guide baffles gradually increases from bottom to top, the distance between the bottom of adjacent guide baffles is 5-10 mm, and the distance between the top of adjacent guide baffles is 10-20 mm.

[0023] Further as the improvement of the technical scheme of the utility model, a sealing rubber ring is arranged between the upper sound inlet plate and the lower sound inlet plate of the sound inlet seat.

[0024] Further as the utility model technical scheme improves, the diffusion part is a fan-shaped structure, and a flow guide groove is arranged on the surface, and the flow guide groove corresponds to the diffusion tooth structure one by one.

[0025] The utility model has the following beneficial effects:

[0026] The multi-stage phase plug system (first phase plug, second phase plug and third phase plug) adopts a diamond cross section and a precise angle design, realizes sound wave branching and guiding, and integrates sound wave compression functions. The first phase plug and the inner wall of the sound wave guide tube form a compression cavity structure, the sound wave energy is concentrated and compressed through a tapered channel, and a high-density sound beam is formed. The second and third phase plugs refine the path while maintaining the sound beam energy density through an adjustable pressure compensation structure, effectively reducing lateral interference while realizing guiding control in the vertical direction ± 15°, and significantly improving the directivity and penetration of sound.

[0027] The composite sound guide branch pipe system formed by the guide partition plate comprises a double-channel structure: the main channel adopts a tapered design to promote horizontal diffusion, and the auxiliary channel is provided with a vertical guide groove array, which guides and diffuses the sound wave energy in the vertical direction through precise calculation of groove depth and angle. When the sound wave propagates upward along the main channel, the vertical guide structure of the auxiliary channel simultaneously realizes 30°-60° elevation angle diffusion, forming a precise coverage mode of a horizontal diffusion angle of 120° and a vertical diffusion angle of 45°, and breaking through the diffusion limitation of the traditional horn in a single direction.

[0028] Three-dimensional diffusion part enhances coverage uniformity

[0029] The diffusion part at the top of the sound outlet seat adopts a double-curved fan-shaped structure, and a three-layer guide system is arranged on the surface: the outer layer is a 360° flow guide groove to realize horizontal diffusion, the middle layer is an array of diffusion tooth structures (vertical guide teeth) to control the energy distribution in the vertical direction, and the inner layer is a compression diffusion cavity to further optimize the sound pressure distribution. This three-dimensional structure enables the sound wave to be uniformly diffused in the horizontal and vertical directions after compression, and cooperates with the vertical guide function of the phase plug to form a full-range three-dimensional sound field coverage.

[0030] Sealing and material upgrading

[0031] The sound inlet seat adopts a double-layer sealing structure: the inner layer is a high-temperature-resistant silicone sealing ring, and the outer layer is provided with a sound wave compression compensation layer to prevent leakage and provide dynamic pressure buffering. The sound guide branch pipe and the diffusion part adopt a nano composite metal material to reduce sound wave reflection loss while maintaining structural strength, and the microgroove treatment on the surface of the compression cavity can reduce standing wave generation and improve compression efficiency by 23%.

[0032] Anti-vibration mounting system

[0033] The sound wave guide pipe adopts an integrated splayed mounting groove, cooperates with a hydraulic damping vice bolt, and can still maintain the displacement accuracy of ±0.1mm when bearing 50Hz-2000Hz vibration. The connection between the guide partition plate and the diffusion part adopts a flexible hinge structure, can dynamically compensate the material deformation caused by temperature change, and ensures the stability of the compression guide system in long-term use.

[0034] The system improves the sound pressure level by 6-8dB through the sound wave compression technology, and the vertical guide diffusion function improves the sound field coverage height by 40%, and is especially suitable for the professional sound system which needs long-distance projection and stereo sound field coverage. BRIEF DESCRIPTION OF DRAWINGS

[0035] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments, made with reference to the accompanying drawings:

[0036] Figure 1 It is a front view structural schematic diagram of a horn diffusion structure according to an embodiment of the present application;

[0037] Figure 2 It is a bottom-up view structural schematic diagram of a horn diffusion structure according to an embodiment of the present application;

[0038] Figure 3 It is a front view structural schematic diagram of a horn diffusion structure according to an embodiment of the present application;

[0039] Figure 4 It is a top view structural schematic diagram of a horn diffusion structure according to an embodiment of the present application;

[0040] Figure 5 It is a side view structural schematic diagram of a horn diffusion structure according to an embodiment of the present application;

[0041] Figure 6 It is a cross-sectional view structural schematic diagram of a sound wave guide pipe according to an embodiment of the present application;

[0042] Figure 7 It is a plan view structural schematic diagram of a sound wave guide pipe according to an embodiment of the present application.

[0043] In the drawings: 100-sound wave guide pipe; 200-sound inlet seat; 300-sound outlet seat; 400-first phase plug; 500-guide partition plate; 600-diffusion part; 110-splayed mounting groove; 120-vice bolt; 130-guide compression channel; 210-sound inlet hole; 220-upper sound inlet plate; 230-lower sound inlet plate; 310-sound outlet hole; 410-second phase plug; 420-third phase plug; 510-sound guide branch pipe; 511-diffusion tooth structure. DETAILED DESCRIPTION

[0044] The utility model will be combined with the specific embodiments and the drawings to be explained in detail below, hereinafter with the illustrative embodiment of the utility model and the explanation of the utility model are explained, but not as the limitation of the utility model.

[0045] It should be noted that all directional indications (such as up, down, left, right, front, back, upper end, lower end, top, bottom, etc.) in the embodiments of the utility model are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0046] In the utility model, unless otherwise explicitly specified and limited, the term "connection" should be understood broadly, for example, "connection" can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise explicitly limited. For ordinary skilled in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to the specific circumstances.

[0047] In addition, in the utility model, the description such as "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one feature; in addition, the technical solutions of each embodiment can be combined with each other, but it must be based on that ordinary skilled in the art can realize, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0048] The utility model will be combined with the specific embodiments and the drawings to be explained in detail below, hereinafter with the illustrative embodiment of the utility model and the explanation of the utility model are explained, but not as the limitation of the utility model.

[0049] As Figures 1 to 7 The utility model provides a technical scheme as shown in the figure: a horn diffusion structure, comprising:

[0050] The sound wave guide pipe 100 arranged longitudinally, the cross section gradually expands from bottom to top, it should be noted that the sound wave guide pipe 100 arranged longitudinally and the cross section gradually expands from bottom to top provides a natural diffusion space for sound wave, with the propagation of sound wave upward, the space gradually increases, conforms to the sound wave diffusion principle, reduces the reflection and interference of sound wave in the propagation process, so that sound wave can propagate more smoothly, helps to improve the clarity and uniformity of sound.

[0051] The sound inlet seat 200 horizontally butts against the lower end of the sound wave guide tube 100; the sound inlet hole 210 is arranged in the middle of the sound inlet seat 200; the sound inlet hole 210 in the middle of the sound inlet seat 200 serves as the entrance of the sound wave, which ensures that the sound wave can be concentrated and stably enter the sound wave guide tube 100, avoids scattering or energy loss of the sound wave during the entering process, and guarantees the effectiveness of the subsequent sound wave processing.

[0052] The sound outlet seat 300 horizontally butts against the upper end of the sound wave guide tube 100; the sound outlet hole 310 is arranged in the middle of the sound outlet seat 300; the sound outlet hole 310 in the middle of the sound outlet seat 300 is the channel for the output of the processed sound wave, which cooperates with the previous structure to orderly output the sound wave processed and diffused in multiple stages, and lays the foundation for the subsequent sound propagation and diffusion.

[0053] The diffusion part 600 is arranged on the top of the sound outlet seat 300, and further diffuses the sound wave output from the sound outlet hole 310; it can disperse the concentrated sound wave to a wider space, expand the coverage range of the sound, and enable more people in the area to receive more uniform sound.

[0054] The first phase plug 400 is fixed in the middle of the sound wave guide tube 100, and symmetrically divides the sound wave guide tube 100 into left and right guide compression channels; it is necessary to note that the first phase plug 400 fixed in the middle of the sound wave guide tube 100 symmetrically divides the sound wave guide tube 100 into left and right guide compression channels 130, which realizes the preliminary segmentation and guidance of the sound wave. This symmetrical design enables the sound wave to be uniformly distributed on the left and right sides, avoids the concentration and confusion of the sound wave in the guide tube, and provides a good foundation for the subsequent multi-stage processing.

[0055] A plurality of pairs of guide baffles 500 are vertically arranged along the inner wall of the sound wave guide tube 100, the guide baffles 500 are symmetrically distributed on the left and right sides of the first phase plug 400, and the sound wave guide tube 100 is divided into a plurality of linear sound guide branches 510; the top end of the guide baffle 500 extends to the lower end surface of the sound outlet seat 300, forming a diffusion tooth structure 511 matched with the sound outlet hole 310; the diffusion tooth structure 511 is in communication with the diffusion part 600. The guide baffle 500 and the diffusion tooth structure 511 divide the sound wave into a plurality of independent paths, realize the layered diffusion of the sound wave through the gradually expanding branch, and reduce the distortion. The diffusion part 600 is in communication with the sound outlet hole 310, forming an integrated diffusion path of "branch-tooth structure-diffusion part", and optimizing the sound field coverage range. These sound guide branches 510 provide independent propagation channels for sound waves, so that sound waves can propagate in relatively independent space, reduce the mutual influence between different sound waves, and further optimize the propagation effect of sound waves. It should be noted that the diffusion tooth structure 511 can further vertically diffuse and adjust the sound waves output from the sound guide branch 510, so that the sound waves are better processed before entering the sound outlet hole 310, and the diffusion effect of the sound waves is enhanced. Moreover, the diffusion tooth structure 511 is in communication with the diffusion part 600, so that the sound waves can be smoothly transmitted from the sound guide branch 510 to the diffusion part 600, realizing continuous diffusion of the sound waves.

[0056] Specifically, in the embodiment, the sound wave guide tube 100 is further provided with a second phase plug 410 and a third phase plug 420; the second phase plug 410 and the third phase plug 420 are arranged in an up-down manner on the left and right sides of the first phase plug 400; the second phase plug 410 and the third phase plug 420 are in cooperation with a plurality of pairs of guide baffles 500 vertically arranged along the inner wall of the sound wave guide tube 100, and divide the sound wave guide tube 100 into a plurality of linear sound guide branches 510. It should be noted that the first, second and third phase plugs 420 are combined, the multi-stage phase plug system (the first phase plug 400, the second phase plug 410 and the third phase plug 420) adopts a rhombic cross section and a precise angle design, which realizes sound wave branching and guiding while integrating sound wave compression function. The first phase plug 400 forms a compression cavity structure with the inner wall of the sound wave guide tube 100, concentrates and compresses the sound wave energy through a tapered channel, and forms a high-density sound beam. The second and third phase plugs 420 refine the path while maintaining the sound beam energy density through an adjustable pressure compensation structure, effectively reducing the horizontal interference while realizing the vertical direction ± 15° guiding control, and significantly improving the directivity and penetration of the sound.

[0057] Specifically, in the embodiment, the bottom end of the first phase plug 400 is flush with the lower end surface of the sound inlet hole 210, and the top end extends to the upper end surface of the sound outlet hole 310. It should be noted that the bottom end of the first phase plug 400 is flush with the lower end surface of the sound inlet hole 210, and the top end extends to the upper end surface of the sound outlet hole 310, which ensures that the sound wave can be effectively guided by the phase plug during the entire propagation process, further enhancing the orderliness of sound wave propagation.

[0058] Specifically, in the embodiment, the sound inlet seat 200 includes an upper sound inlet plate and a lower sound inlet plate with a T-shaped cross section. This structural design enhances the structural stability of the sound inlet seat 200, and better interfaces with the sound wave guide 100, allowing the sound wave to smoothly transition from the sound inlet seat 200 to the sound wave guide 100.

[0059] Specifically, in the embodiment, the sound outlet seat 300 is a cuboid structure. This regular shape facilitates the propagation and distribution of sound waves, allowing the sound waves to reach the sound outlet hole 310 more uniformly, reducing the phenomenon of sound wave reflection and interference caused by irregular structures.

[0060] Specifically, in the embodiment, the first phase plug 400 has a rhombus cross section with acute top and bottom angles. The first phase plug 400 has a rhombus cross section with acute top and bottom angles. This special shape design can effectively guide the propagation direction of sound waves, reduce the reflection and scattering of sound waves on the surface of the phase plug, improve the guiding efficiency of sound waves, and allow the sound waves to enter the corresponding guiding compression channel 130 more accurately.

[0061] Specifically, in the embodiment, the sound wave guide 100 has eight-shaped mounting grooves symmetrically arranged on the front and rear surfaces, and the guiding partition plate 500 is fixed by secondary bolts. It should be noted that the sound wave guide 100 has eight-shaped mounting grooves symmetrically arranged on the front and rear surfaces, and the guiding partition plate 500 is fixed by secondary bolts. This mounting structure provides stable support and fixation for the guiding partition plate 500, ensuring that the guiding partition plate 500 does not loosen or shift due to vibration or other factors during long-term use, guaranteeing the stability and reliability of the entire horn diffusion structure, thereby maintaining good acoustic performance.

[0062] Specifically, in the embodiment, the number of the guide baffles 500 is 6-10 pairs, the spacing between adjacent guide baffles 500 gradually increases from bottom to top, the spacing between the bottoms of adjacent guide baffles 500 is 5-10 mm, and the spacing between the tops of adjacent guide baffles 500 is 10-20 mm. The design of small spacing between the bottoms and large spacing between the tops of the guide baffles 500 simulates the natural diffusion trend of sound waves, reduces the concentration of sound energy, and reduces the high-frequency "sharp feeling". This design conforms to the characteristics of sound wave diffusion. As the sound wave propagates upward, the space gradually increases, which is beneficial to the natural diffusion of sound waves. At the same time, it also ensures that the propagation speed and intensity of sound waves in each sound guide branch pipe 510 are relatively uniform, thereby improving the overall quality of sound.

[0063] Specifically, in the embodiment, a sealing rubber ring is arranged between the upper sound inlet plate and the lower sound inlet plate of the sound inlet seat 200. The sealing rubber ring arranged between the upper sound inlet plate and the lower sound inlet plate effectively prevents the leakage of sound waves at the connection part of the sound inlet seat 200 and the sound wave guide pipe 100. The loss of sound wave energy is reduced, and more sound wave energy can be effectively utilized, thereby improving the acoustic efficiency of the entire horn diffusion structure.

[0064] Specifically, in the embodiment, the diffusion part 600 is a fan-shaped structure, and a flow guide groove is arranged on the surface of the diffusion part 600. The flow guide groove corresponds to the diffusion tooth structure 511 one by one. The fan-shaped diffusion part 600 cooperates with the flow guide groove to convert the linear output of sound waves from the rectangular sound outlet hole 310 into 360° uniform diffusion, thereby solving the problem of uneven sound field coverage of the traditional horn.

[0065] Compared with the prior art, the utility model has the following beneficial effects:

[0066] Multi-stage phase plug precise guidance and sound wave compression system: the multi-stage phase plug system (first phase plug 400, second phase plug 410 and third phase plug 420) adopts a rhombic cross section and a precise angle design, which realizes sound wave branching guidance while integrating sound wave compression function. The first phase plug 400 and the inner wall of the sound wave guide pipe 100 form a compression cavity structure, which concentrates and compresses sound wave energy through a tapered channel to form a high-density sound beam. The second and third phase plugs 420 maintain the energy density of the sound beam through an adjustable pressure compensation structure while refining the path, effectively reducing lateral interference and realizing vertical direction ± 15° guidance control, thereby significantly improving the directivity and penetration of sound.

[0067] The compound sound guide branch pipe system formed by the guide baffle 500 comprises a double-channel structure: the main channel adopts a gradually expanding design to promote horizontal diffusion, and the auxiliary channel is internally provided with an array of vertical guide grooves, which guide and diffuse sound wave energy in the vertical direction through precise calculation of groove depth and angle. When the sound wave propagates upward along the main channel, the vertical guide structure of the auxiliary channel simultaneously realizes 30°-60° upward angle diffusion, forming a precise coverage mode of a horizontal diffusion angle of 120° and a vertical diffusion angle of 45°, thereby breaking through the diffusion limitation of the traditional horn in a single direction.

[0068] The three-dimensional diffusion part enhances coverage uniformity: the diffusion part 600 at the top of the sound outlet seat 300 adopts a double-curved surface sector structure, and a three-layer guide system is arranged on the surface: the outer layer is a 360° flow guide groove to realize horizontal diffusion, the middle layer is an array of vertical guide teeth to control energy distribution in the vertical direction, and the inner layer is a compression diffusion cavity to further optimize sound pressure distribution. This three-dimensional structure enables the sound wave to be uniformly diffused in the horizontal and vertical directions after compression, and forms a full-range three-dimensional sound field coverage in cooperation with the vertical guide function of the phase plug.

[0069] Sealing and material upgrading: the sound inlet seat 200 adopts a double-layer sealing structure: the inner layer is a high-temperature-resistant silica gel sealing ring, and the outer layer is provided with a sound wave compression compensation layer to prevent leakage and provide dynamic pressure buffering. The sound guide branch pipe 510 and the diffusion part 600 are made of a nano-composite metal material, which can reduce sound wave reflection loss while maintaining structural strength, and the micro-groove treatment on the surface of the compression cavity can reduce standing wave generation and improve compression efficiency by 23%.

[0070] Anti-vibration mounting system: the sound guide pipe 100 adopts an integrated eight-shaped mounting groove, which cooperates with a hydraulic damping vice bolt to maintain a displacement accuracy of ±0.1 mm when subjected to 50Hz-2000Hz vibration. The connection between the guide baffle 500 and the diffusion part 600 adopts a flexible hinge structure, which can dynamically compensate for material deformation caused by temperature changes to ensure the stability of the compression guide system during long-term use. The system can improve the sound pressure level by 6-8dB through sound wave compression technology, and the vertical guide diffusion function can improve the sound field coverage height by 40%, and is particularly suitable for professional sound systems that require long-distance projection and three-dimensional sound field coverage.

[0071] The above describes the technical solutions provided by the embodiments of the present application in detail, and the principles and implementation modes of the embodiments of the present application are described by applying specific examples; the above description of the embodiments is only applicable to helping understand the principles of the embodiments of the present application; meanwhile, for those skilled in the art, the specific implementation modes and application ranges of the embodiments of the present application will be changed, and the content of the specification should not be understood as a limitation of the present application.

Claims

1. A horn diffusion structure, characterized in that, include: The longitudinally arranged acoustic waveguide has a cross-section that gradually increases from bottom to top; A horizontally connected sound inlet seat is attached to the lower end of the acoustic waveguide; a sound inlet hole is provided in the middle of the sound inlet seat; A sound outlet seat is horizontally connected to the upper end of the acoustic waveguide; a sound outlet hole is provided in the middle of the sound outlet seat; A diffuser portion is provided at the top of the sound outlet; A first phase plug is fixed in the middle of the acoustic waveguide and symmetrically divides the acoustic waveguide into left and right guide compression channels; Several pairs of guide baffles are vertically arranged along the inner wall of the acoustic waveguide. The guide baffles are symmetrically distributed on both sides of the first phase plug and divide the interior of the acoustic waveguide into multiple linear acoustic conduits. The top of the guide baffles extends to the lower end face of the sound outlet seat, forming a diffuser tooth structure that cooperates with the sound outlet hole. The diffuser tooth structure is connected to the diffuser section.

2. The horn diffusion structure according to claim 1, characterized in that: The acoustic waveguide is also provided with a second phase plug and a third phase plug; the second phase plug and the third phase plug are arranged vertically on the left and right sides of the first phase plug; the second phase plug and the third phase plug cooperate with several pairs of guide baffles arranged vertically along the inner wall of the acoustic waveguide to divide the interior of the acoustic waveguide into multiple linear acoustic conduits.

3. The horn diffusion structure according to claim 1, characterized in that: The bottom end of the first phase plug is flush with the lower end face of the inlet hole, and the top end extends to the upper end face of the outlet hole.

4. The horn diffusion structure according to claim 1, characterized in that: The sound inlet seat includes an upper sound inlet plate and a lower sound inlet plate with a T-shaped cross section.

5. A horn diffuser structure according to claim 1, characterized in that: The sound-emitting base has a rectangular parallelepiped structure.

6. The horn diffusion structure according to claim 1, characterized in that: The first phase plug has a rhomboid cross-section, with both its apex and base angles being acute angles.

7. The horn diffusion structure according to claim 1, characterized in that: The front and rear surfaces of the acoustic waveguide are symmetrically provided with figure-eight shaped mounting grooves, and the guide plate is fixed by auxiliary bolts.

8. A horn diffusion structure according to claim 1, characterized in that: The number of guide partitions is 6-10 pairs, and the spacing between adjacent guide partitions gradually increases from bottom to top. The bottom spacing between adjacent guide partitions is 5-10mm, and the top spacing is 10-20mm.

9. A horn diffusion structure according to claim 4, characterized in that: A sealing ring is provided between the upper and lower sound entry plates of the sound entry seat.

10. A horn diffuser structure according to claim 1, characterized in that: The diffuser has a fan-shaped structure and a flow guide groove on its surface. The flow guide groove corresponds one-to-one with the diffuser tooth structure.

Images