CN214851784U

CN214851784U - High pitch horn and audio amplifier

Info

Publication number: CN214851784U
Application number: CN202121040137.1U
Authority: CN
Inventors: 陈健业
Original assignee: Guangzhou Hi End Plus Electronic Co ltd
Current assignee: Guangzhou Hi End Plus Electronic Co ltd
Priority date: 2021-05-14
Filing date: 2021-05-14
Publication date: 2021-11-23
Anticipated expiration: 2031-05-14

Abstract

The utility model provides a high pitch horn and audio amplifier. The high-pitch horn comprises a waveguide body and a horn body, the waveguide body is provided with a sound inlet, a first sound outlet and a sound flow cavity, the sound inlet, the first sound outlet and the sound flow cavity are communicated, and one end, close to the sound inlet, of the waveguide body is used for being connected with a sound source; the one end of horn body is connected with the waveguide body one end that is close to first sound outlet, and the other end of horn body is provided with a plurality of through-hole, and the through-hole forms second sound outlet, and the horn body is used for changing the propagation direction of high sound signal, and second sound outlet is used for letting the bass signal pass through. The loudspeaker box comprises a box body, a first loudspeaker, a second loudspeaker and the high pitch horn, wherein the first loudspeaker is connected with the box body; the second loudspeaker is arranged in the box body; the horn body sets up in the outside of box, and the sound signal that first speaker produced can pass the horn body, and the waveguide body sets up in the inside of box, and the waveguide body is close to the one end of sound inlet and is connected with the second speaker, and first sound outlet communicates with the outside of box.

Description

High pitch horn and audio amplifier

Technical Field

The utility model relates to an audio frequency technical field, in particular to high pitch horn and audio amplifier.

Background

A loudspeaker box is a terminal of an acoustic system and generally includes a speaker capable of receiving an electrical signal containing sound information and pushing ambient air to generate sound waves, and a cabinet for housing the speaker. The frequency of sound wave that human ear can hear is between 20Hz (Hertz) and 20KHz (Kilohertz), divide according to conventionality, the sound signal with frequency under 160Hz belongs to the bass signal, the bass signal influences the fullness, the thickness and the dynamics of the sound; the sound signal with the frequency between 160Hz and 1280Hz belongs to a middle sound signal, is a frequency band in which all musical instruments and human voice appear most frequently and is also the frequency band in which human hearing is most sensitive, and influences the brightness, the definition and the transparency of the sound; the sound signal with frequency above 1280Hz belongs to high-pitch signal, which affects the quality and reality of the natural musical instrument tone reproduction. Whether the sound signals of each frequency band can be simultaneously and clearly restored in the ears of the user is an important index for evaluating the performance of the sound box. Since the frequency response range of the speakers is limited, in the prior art, speakers with different frequency response ranges are used in the same sound box to reproduce sound signals with different frequencies. However, since the frequency of the treble signal is higher than that of the bass signal, when the tweeter and the woofer are driven by the same power of the electric signal, the amplitude of the tweeter is often smaller than that of the woofer, so that the volume of the treble signal is smaller than that of the bass signal, which affects the user experience. The electroacoustic conversion efficiency of the high pitch loudspeaker can be increased by arranging the horn in the sound box, the volume of high pitch signals is increased, but the volume of the horn cannot be too large due to the limited volume of the sound box, otherwise, interference can be caused to the low pitch loudspeaker, the transmission of low pitch signals is hindered, and the improvement of the electroacoustic conversion efficiency of the high pitch signals is restricted.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a high pitch horn and audio amplifier, simple structure can enough promote the acoustoelectric conversion efficiency of high pitch signal, can avoid the interference to bass signal again.

According to the utility model discloses high pitch horn of first aspect embodiment, include:

the acoustic source comprises a waveguide body, a sound source and a sound source, wherein the waveguide body is provided with a sound inlet, a first sound outlet and a sound flow cavity, the sound inlet, the first sound outlet and the sound flow cavity are communicated, and one end of the waveguide body, which is close to the sound inlet, is used for being connected with the sound source;

the horn body, the one end of horn body with the wave conductor is close to the one end of first sound outlet is connected, the other end of horn body is provided with a plurality of through-hole, the through-hole forms the second sound outlet, the horn body is used for changing the direction of propagation of high sound signal, the second sound outlet is used for letting the bass signal pass through.

According to the utility model discloses high pitch horn of first aspect embodiment has following beneficial effect at least:

the utility model discloses a high pitch horn includes the wave guide and the horn body, and the wave guide is provided with sound inlet, first sound outlet and sound flow chamber, and sound inlet, sound flow chamber and first sound outlet communicate in proper order and constitute the passageway that can let sound signal pass through. The waveguide is close to the one end of sound inlet and is connected with the sound source, and the sound signal that the sound source produced exports to the horn body behind sound inlet, sound flow chamber and the first sound outlet in proper order, and the waveguide can adjust the acoustic resistance of sound source, improves the electroacoustic conversion efficiency of sound source, and simultaneously, the waveguide gathers sound signal and converts the sound signal of sphere wave form that produces from the sound source to the sound signal of the cylinder wave form that exports from first sound outlet, improves the volume, propagation distance and the directive property of the sound signal that the sound source produced. The one end of horn body is connected with the one end that the wave conductor is close to first sound outlet, the other end of horn body is provided with a plurality of through-hole, the through-hole forms second sound outlet, the horn body plays the effect of assembling and direction to the high pitch signal from first sound outlet output, can increase high pitch signal's propagation distance and improve high pitch signal's directive property, the second sound outlet can let bass signal pass through, avoid the weakening of horn body to bass signal. Therefore, the utility model discloses a high pitch horn simple structure can enough promote the acoustoelectric conversion efficiency of high pitch signal, can avoid the interference to bass signal again.

According to some embodiments of the invention, the minimum aperture of the through-hole is smaller than half of the maximum wavelength of the treble signal.

According to some embodiments of the invention, the number of through-holes is at least two, adjacent two the minimum distance between the pore walls of the through-holes is less than half the minimum wavelength of the bass signal.

According to the utility model discloses a some embodiments, the shape of through-hole is the bar, the through-hole is parallel to each other and follows the width direction of through-hole is arranged equidistantly, the through-hole is in the surface of horn body forms the bars form the second sound outlet.

According to the utility model discloses a some embodiments, the length of through-hole is followed the middle part of second phonate mouth to the both sides of second phonate mouth decrease progressively, each the one end parallel and level of through-hole, each the other end of through-hole makes the second phonate mouth demonstrates the edge of arcuation.

According to the utility model discloses a some embodiments, second sound outlet both sides be provided with the baffle on the horn body.

According to some embodiments of the utility model, the shape of first sound outlet is the rectangle, the horn body distribute in symmetrically in the both sides of first sound outlet, the horn body is kept away from the one end of waveguide is towards keeping away from the direction of waveguide axis is crooked.

According to some embodiments of the utility model, the waveguide includes shell and separation unit, be provided with in the shell and hold the chamber, the separation unit set up in hold the intracavity and with the shell is connected, the separation unit with form between the shell the sound flow chamber, the shape in sound flow chamber is the extreme point directional cone that sound inlet and bottom surface and lateral wall are cut by two tangent planes.

According to the utility model discloses audio amplifier of second aspect embodiment, include:

a box body;

the first loudspeaker is connected with the box body;

the second loudspeaker is arranged in the box body;

in the tweeter horn according to the first embodiment of the present invention, the horn is disposed outside the housing, the sound signal generated by the first speaker can pass through the horn, the waveguide is disposed inside the housing, one end of the waveguide close to the sound inlet is connected to the second speaker, and the first sound outlet is communicated with the outside of the housing.

According to the utility model discloses audio amplifier of second aspect embodiment has following beneficial effect at least:

the utility model discloses a loudspeaker box includes the high pitch horn of box, first speaker, second speaker and the above-mentioned first aspect embodiment. The first loudspeaker is connected with the box body and can be used for generating bass signals, and the second loudspeaker is arranged in the box body and can be used for generating treble signals. The horn body of high pitch horn sets up in the outside of box, is provided with the second sound outlet that constitutes by the through-hole on the horn body, and the bass signal that first speaker produced can pass the second sound outlet when propagating, makes the horn body can not produce negative effects to first speaker. The waveguide of high pitch horn sets up in the inside of box, the one end that the waveguide is close to the sound inlet is connected with the second speaker, first sound outlet communicates with the outside of box, the one end of horn is connected with the one end that the waveguide is close to first sound outlet, the acoustic resistance of second speaker can be adjusted to the waveguide, improve the electroacoustic conversion efficiency of second speaker, simultaneously, the waveguide gathers the high pitch signal that the second speaker produced and converts the high pitch signal of the spherical wave form that produces from the second speaker to the high pitch signal of the cylindrical wave form that is exported from first sound outlet, improve the volume of the high pitch signal that the second speaker produced, propagation distance and directive property, the horn plays the effect of gathering and leading to the high pitch signal that exports from first sound outlet, can increase the propagation distance of high pitch signal and improve the directive property of high pitch signal. Therefore, the novel loudspeaker box is simple in structure, the sound-electricity conversion efficiency of the second loudspeaker can be improved, the interference to the first loudspeaker can be avoided, the high-pitch sound effect is improved under the condition that the low-pitch effect is not influenced, and the improvement of user experience is facilitated.

According to some embodiments of the utility model, first speaker about first sound outlet symmetric distribution, the horn body is kept away from the one end of waveguide shield in the one side of first speaker, the shape of second sound outlet with the shape of first speaker matches.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is an overall schematic view of a high pitch horn according to an embodiment of the present invention;

fig. 2 is an overall schematic view of a high pitch horn according to another embodiment of the present invention;

fig. 3 is an exploded schematic view of a high pitch horn according to another embodiment of the present invention;

fig. 4 is a schematic cross-sectional view of a high pitch horn according to another embodiment of the present invention;

fig. 5 is an overall schematic view of a sound box according to an embodiment of the present invention;

fig. 6 is an exploded schematic view of a sound box according to another embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, if there are first and second descriptions for distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

The following describes in detail the tweeter horn according to the first aspect of the present invention with reference to the drawings.

Referring to fig. 1, 2, 3 and 4, an embodiment of the present invention provides a high pitch horn, including a waveguide 400 and a horn 100, the waveguide 400 is provided with a sound inlet 411, a first sound outlet 412 and a sound flow cavity 413, the sound inlet 411, the sound flow cavity 413 and the first sound outlet 412 are sequentially communicated and constitute a channel through which a sound signal can pass. One end of the waveguide 400 close to the sound inlet 411 is connected with a sound source, a sound signal generated by the sound source sequentially passes through the sound inlet 411, the sound flow cavity 413 and the first sound outlet 412 and then is output to the horn body 100, the waveguide 400 can adjust the sound resistance of the sound source and improve the electroacoustic conversion efficiency of the sound source, meanwhile, the waveguide 400 converges the sound signal and converts the spherical wave-shaped sound signal generated from the sound source into the cylindrical wave-shaped sound signal output from the first sound outlet 412, and the volume, the propagation distance and the directivity of the sound signal generated by the sound source are improved. One end of horn body 100 is connected with the one end that waveguide 400 is close to first sound outlet 412, the other end of horn body 100 is provided with a plurality of through-hole 110, through-hole 110 forms second sound outlet 120, horn body 100 plays the effect of assembling and leading to the high pitch signal of following first sound outlet 412 output, can increase high pitch signal's propagation distance and improve high pitch signal's directionality, second sound outlet 120 can let bass signal pass through, avoid horn body 100 to the weakening of bass signal. Therefore, the high-pitch horn of the embodiment has a simple structure, can improve the sound-electricity conversion efficiency of high-pitch signals, and can avoid interference on low-pitch signals.

Further, the minimum aperture (a) of the through hole 110 is smaller than one half of the maximum wavelength of the treble signal outputted from the sound source, so that the through hole 110 does not change the propagation direction of the treble signal, the horn body 100 plays a role in converging and guiding the treble signal, the treble signal is propagated along the path set by the horn body 100, the propagation distance of the treble signal is increased, and the directivity of the treble signal is improved. Therefore, the utility model discloses a high pitch horn is simple structure not only to can improve the volume that the high pitch signal that the sound source produced reachd the human ear, effectively improve the electro-acoustic conversion efficiency and the user experience of sound source. In the present embodiment, the maximum wavelength value of the treble signal depends on the lower limit of the treble signal frequency, generally, for the audio signal, the sound signal with frequency above 1280Hz belongs to the treble signal, the lowest frequency of the treble signal is 1280Hz, and the minimum aperture of the through hole 110 should be less than 13.28 cm on the premise that the sound wave transmission speed is 340 m/s. It should be noted that the definition of the boundary points of the bass signal, the middle-pitch signal and the treble signal may vary with the research and development or cognition in the audio field, and the boundary points of the treble signal and the bass signal may also be divided according to the actual working condition of the product, so that the calculation of the minimum aperture of the through hole 110 in the embodiment is only exemplary, and is not limited to the specific size of the minimum aperture of the through hole 110, and those skilled in the art may make various changes without departing from the spirit of the present invention.

Further, the number of the through holes 110 is nine, and the minimum distance (b) between the hole walls of two adjacent through holes 110 is smaller than one-half of the minimum wavelength of the bass signal. By providing a plurality of through holes 110 in the present embodiment and making the interval between the hole walls of each through hole 110 smaller than one-half of the minimum wavelength of the bass signal, the bass signal can be diffracted at the through hole 110 and bypass the horn 100 through the through hole 110, the horn 100 is prevented from weakening the bass signal, the bass signal is improved, the propagation of the bass signal is not affected, and the electroacoustic conversion efficiency is effectively improved. In the present embodiment, the minimum wavelength value of the bass signal depends on the upper limit value of the bass signal frequency, generally, for the audio signal, the sound signal with frequency lower than 160Hz belongs to the bass signal, the maximum frequency of the bass signal is 160Hz, and under the premise that the sound wave transmission speed is 340 m/s, the interval between the hole walls of the through holes 110 should be less than 1.063 m. It should be noted that the definition of the boundary points of the bass signal, the midrange signal and the treble signal varies with the research development or cognition in the audio field, and the boundary points of the treble signal and the bass signal can be divided according to the actual working condition of the product, so the calculation of the intervals between the hole walls of the through holes 110 in the embodiment is only exemplary, and the specific size of the intervals between the hole walls of the through holes 110 is not limited; it should be noted that the number of the through holes 110 is nine in the present embodiment, but the number of the through holes 110 is not limited, and those skilled in the art may make various changes without departing from the spirit of the present invention.

Further, the through holes 110 are formed in a stripe shape, the through holes 110 are parallel to each other and are arranged at equal intervals in the width direction of the through holes 110, and the through holes 110 form a grating-shaped second sound outlet 120 on the surface of the horn body 100. The second sound outlet 120 does not change the propagation direction of the treble signal and does not impair the guiding effect of the horn body 100 on the treble signal; the bass signal is diffracted at the through hole 110 and continues to propagate through the second sound outlet 120, so that the second sound outlet 120 does not obstruct the propagation of the bass signal.

Further, the length of the through holes 110 decreases from the middle of the second sound outlet 120 to both sides of the second sound outlet 120, one end of each through hole 110 away from the waveguide 400 is flush, and the other end of each through hole 110 forms an arc-shaped edge for the second sound outlet 120, so that the second sound outlet 120 can be matched with the edge of a diaphragm, especially a circular diaphragm. The shape of the second sound outlet 120 of the tweeter horn of the present embodiment matches the shape of the diaphragm of most of the commercially available speaker products, and when the horn body 100 is shielded in front of the diaphragms of these speakers, the bass signals generated by the speakers can sufficiently pass through the horn body 100 and continue to propagate, thereby reducing the influence of the horn body 100 on the bass signals.

Further, the horn body 100 on both sides of the second sound outlet 120 is provided with the baffle 130, and the baffle 130 can enhance the acoustic resistance of the diaphragm shielded by the horn body 100, improve the electroacoustic conversion efficiency of the diaphragm, and avoid the horn body 100 from weakening the sound signal.

Further, the first sound outlet 412 has a rectangular shape, and the high-pitched sound signal is output from the first sound outlet 412 in the form of cylindrical waves. The horn body 100 is symmetrically distributed at both sides of the first sound outlet 412, one end of the horn body 100 far away from the waveguide 400 is bent towards the direction far away from the axis of the waveguide 400, and the horn body 100 and the first sound outlet 412 form a horn structure for guiding the treble signal, so that the propagation of the treble signal has directionality, the propagation distance of the treble signal is increased, and the volume of the treble signal is increased.

Further, the waveguide 400 includes a housing 420 and a blocking unit 430. The housing 420 includes a first casing 421 and a second casing 422, the first casing 421 and the second casing 422 are connected to form a containing cavity, one end of the containing cavity close to the sound source is a sound inlet 411, and one end of the containing cavity far away from the sound source is a first sound outlet 412. A connection wing 431 is provided on a sidewall of the blocking unit 430, the connection wing 431 is inserted into a fixing groove 414 formed by the first casing 421 and the second casing 422, the blocking unit 430 is fixed in the accommodating cavity by the casing 420 through the fixing groove 414 and the connection wing 431, and the sidewall of the blocking unit 430 and an inner wall of the casing 420 form an acoustic flow cavity 413 together. The blocking unit 430 is coaxially disposed with the cavity of the receiving chamber, the shape of the cavity of the receiving chamber and the blocking unit 430 is a cone with an end point pointing to the sound inlet 411 and a bottom surface and a side wall cut by two cut surfaces, and the shape of the cavity of the receiving chamber and the blocking unit 430 is such that the shape of the sound flow chamber 413 presents a cone with an end point pointing to the sound inlet 411 and a bottom surface and a side wall cut by two cut surfaces. The blocking unit 430 and the housing 420 can change the flow direction of the sound signal output by the sound source, and a horn structure for adjusting the acoustic resistance is formed at one end of the sound flow cavity 413 close to the sound inlet 411, so that the electroacoustic conversion efficiency of the sound source can be improved; the one end that sound flow chamber 413 is close to first sound outlet 412 has played the effect of assembling to the sound signal, can convert the sound signal with spherical wave propagation into cylindrical wave to increased the propagation distance of sound, improved the volume and the directive property of sound signal, improved the electroacoustic conversion efficiency of sound source.

The sound box according to the second aspect of the present invention is described in detail below with reference to the accompanying drawings.

Referring to fig. 5 and 6, an embodiment of the present invention provides a loudspeaker box, including a box 200, a first speaker 300, a second speaker 500, and the tweeter of the first aspect embodiment. A mounting hole 210 is provided on the cabinet 200, a first speaker 300 is disposed in the mounting hole 210 and connected to the cabinet 200, and the first speaker 300 is used to generate a bass signal. A second speaker 500 is disposed in the cabinet 200, the second speaker 500 is used for generating a high-pitched sound signal, and the second speaker 500 is connected to one end of the waveguide 400 near the sound inlet 411. The horn body 100 of the high pitch horn is arranged outside the box body 200, one end of the horn body 100 is connected with one end of the waveguide body 400 close to the first sound outlet 412, the other end of the horn body 100 is provided with the second sound outlet 120 formed by the through hole 110, one end of the horn body 100 provided with the second sound outlet 120 is partially shielded on one surface of the first loudspeaker 300 far away from the inside of the box body 200, a bass signal generated by the first loudspeaker 300 can pass through the second sound outlet 120 and continue to be transmitted, and the second sound outlet 120 enables the horn body 100 not to reduce the volume of the first loudspeaker 300. The waveguide 400 of the high-pitch horn is arranged in the box 200, the waveguide 400 comprises a shell 420 and a blocking unit 430, the shell 420 comprises a first shell 421 and a second shell 422, the first shell 421 and the second shell 422 are connected to form a containing cavity, one end of the containing cavity close to the second loudspeaker 500 is a sound inlet 411, the second loudspeaker 500 is connected with the shell 420, one end of the containing cavity far away from the second loudspeaker 500 is a first sound outlet 412, the first sound outlet 412 is communicated with the outside of the box 200, the horn 100 is connected with the shell 420, the blocking unit 430 is fixed in the containing cavity, the side wall of the blocking unit 430 and the inner wall of the shell 420 form a sound flow cavity 413 together, and high-pitch signals generated by the second loudspeaker 500 are output to the horn 100 through the sound inlet 411, the sound flow cavity 413 and the first sound outlet 412 in sequence. The blocking unit 430 can adjust the acoustic resistance of the second speaker 500, and improve the electro-acoustic conversion efficiency of the second speaker 500; the acoustic flow chamber 413 collects and transmits the treble signal generated by the second speaker 500, and converts the spherical wave signal generated from the second speaker 500 into a cylindrical wave signal output from the first sound outlet 412, thereby increasing the volume, propagation distance and directivity of the treble signal generated by the second speaker 500; the horn body 100 serves to converge and guide the treble signal outputted from the first sound outlet 412, thereby increasing the propagation distance of the treble signal and improving the directivity of the treble signal. Therefore, the novel loudspeaker box is simple in structure, the sound-electricity conversion efficiency of the second loudspeaker 500 can be improved, the interference to the first loudspeaker 300 can be avoided, the high-pitch sound effect is improved under the condition that the low-pitch effect is not influenced, and the improvement of the reduction effect of natural sound and the improvement of user experience are facilitated.

Further, the number of the mounting holes 210 and the first speakers 300 is two, the mounting holes 210 and the first speakers 300 are symmetrically distributed about the first sound outlet 412, the horn 100 is symmetrically distributed on two sides of the first sound outlet 412, and one ends of the horn 100 far away from the waveguide 400 are respectively shielded on one surface of the first speakers 300 far away from the inside of the cabinet 200. The horn 100 is provided at an end thereof remote from the waveguide 400 with a second sound outlet 120 having a shape matching the diaphragm shape of the shielded portion of the first speaker 300, and the bass signal output from the first speaker 300 can pass through the second sound outlet 120 and continue to propagate. The horn body 100 can guide the treble signal without affecting the propagation of the bass signal, and thus, the second speaker 500 is disposed between the two first speakers 300, so that the sound box can be made compact, the volume of the sound box can be reduced, and the sound box of the present embodiment can be easily disposed in various applications. It should be noted that, in the present embodiment, two first speakers 300 and one second speaker 500 are taken as an example to illustrate the technical solution of the present invention, however, the present embodiment is only exemplary, and the number of the first speakers 300 and the second speaker 500 is not limited, for example, the number of the first speakers 300 may also be one or more, when the number of the first speakers 300 is multiple, the first speakers 300 and the horn 100 may be disposed around the circumference of the second sound outlet 120, which can also achieve the technical effects of making the structure of the sound box compact and small, and those skilled in the art can make various changes without departing from the spirit of the present invention.

Because the utility model discloses the audio amplifier has included the high pitch horn in above-mentioned arbitrary embodiment, consequently, the utility model discloses the audio amplifier possesses the technological effect that the high pitch horn brought in above-mentioned arbitrary embodiment, so, the utility model discloses a concrete technological effect of audio amplifier can refer to the technological effect of the high pitch horn in above-mentioned arbitrary embodiment, and no longer repeated here.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A high pitch horn, comprising:

2. The tweeter horn of claim 1, wherein the minimum aperture of the through-hole is less than one-half of the maximum wavelength of the tweeter signal.

3. The high pitch horn of claim 1, wherein the number of the through holes is at least two, and the minimum distance between the hole walls of two adjacent through holes is less than one-half of the minimum wavelength of the bass signal.

4. The high pitch horn according to claim 3, wherein the through holes are formed in a bar shape, the through holes are parallel to each other and arranged at equal intervals in a width direction of the through holes, and the through holes form the second sound outlet in a grid shape on the surface of the horn body.

5. The high tone horn according to claim 4, wherein the through holes have lengths decreasing from a middle portion of the second sound outlet to both sides of the second sound outlet, one end of each through hole being flush, the other end of each through hole making the second sound outlet present an arc-shaped edge.

6. The high pitch horn of claim 1, wherein baffles are provided on the horn body on both sides of the second sound outlet.

7. The high pitch horn of claim 1, wherein the first sound outlet is rectangular, the horn is symmetrically disposed on both sides of the first sound outlet, and an end of the horn away from the waveguide is curved in a direction away from an axis of the waveguide.

8. The high pitch horn of claim 1, wherein the waveguide comprises a housing and a blocking unit, a receiving cavity is formed in the housing, the blocking unit is disposed in the receiving cavity and connected to the housing, the blocking unit and the housing form the acoustic flow cavity therebetween, and the acoustic flow cavity is shaped as a cone with an end point directed toward the sound inlet and a bottom surface and a side wall cut by two cut surfaces.

9. An acoustic enclosure, comprising:

a box body;

the first loudspeaker is connected with the box body;

the second loudspeaker is arranged in the box body;

the high pitch horn of any one of claims 1 to 8, the horn body being disposed outside the cabinet, the sound signal generated by the first speaker being passed through the horn body, the waveguide being disposed inside the cabinet, an end of the waveguide near the sound inlet being connected to the second speaker, and the first sound outlet being in communication with the outside of the cabinet.

10. An acoustic enclosure according to claim 9, wherein the first loudspeakers are symmetrically distributed about the first sound outlet, the horn is shielded from a face of the first loudspeaker at an end of the horn remote from the waveguide, and the shape of the second sound outlet matches the shape of the first loudspeaker.