CN109996146B - Sound box and sound diffusion system - Google Patents
Sound box and sound diffusion system Download PDFInfo
- Publication number
- CN109996146B CN109996146B CN201910430583.4A CN201910430583A CN109996146B CN 109996146 B CN109996146 B CN 109996146B CN 201910430583 A CN201910430583 A CN 201910430583A CN 109996146 B CN109996146 B CN 109996146B
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- sound
- panel
- diffusion
- angle
- front panel
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- 238000009792 diffusion process Methods 0.000 title claims abstract description 104
- 230000005855 radiation Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 210000005069 ears Anatomy 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/24—Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges
- H04R1/245—Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges of microphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/26—Spatial arrangements of separate transducers responsive to two or more frequency ranges
- H04R1/265—Spatial arrangements of separate transducers responsive to two or more frequency ranges of microphones
Abstract
The invention relates to a sound box and a sound diffusion system, wherein the sound box comprises a box body, an angle diffusion panel and a front panel are arranged in the box body, the angle diffusion panels are arranged on two sides of the front panel, so that the front panel protrudes outwards, the sound box further comprises a tweeter, a midrange tweeter and a woofer, the tweeter, the midrange tweeter and the woofer are arranged on the angle diffusion panel and the front panel, and the sound diffusion system comprises a plurality of sound boxes.
Description
Technical Field
The invention relates to a sound box and also relates to a sound diffusion system.
Background
In the existing KTV box, a sound box is hung at four corners of a room or at the left side and the right side of a main vision wall through hanging ribs or a top backboard, and the purpose of covering the whole room through sound is achieved through angle adjustment. Fig. 1 (a) and 1 (b) illustrate a sound box arrangement mode in the prior art, fig. 1 (a) illustrates an implementation mode that sound boxes are arranged on two sides of a main vision wall in the prior art, as shown in fig. 1 (a), two sound boxes 300 are hung on two sides of the main vision wall, and through inward inclination of angles, sound radiation surfaces form included angles, and the purpose of fully covering rooms by sound is achieved by utilizing the combined action of direct sound and reflected sound; fig. 1 (b) illustrates an embodiment in which sound boxes are disposed at four corners of a room in the prior art, as shown in fig. 1 (b), four sound boxes 300 are distributed at four corners of the room, and the purpose of covering the whole room with sound is achieved by the combined action of direct sound and reflected sound of the sound boxes through the adjustment of the angles of the sound boxes.
As can be seen from fig. 1 (a) and fig. 1 (b), because the radiation angles of the sound boxes are smaller, after the angles are adjusted, the radiation areas of the sound boxes are mutually overlapped in a crossing way, so that a point sound source radiation area, a sound superposition area, a radiation blind area and a complete reflection area are formed in the sound field, and the sound definition of each subarea is different due to different direct sound or reflected sound proportions of each subarea; the sound pressure of each subarea is different due to the different superposition of the sound energy of each subarea; due to different radiation cross points of the sound boxes, the drift of sound image positioning in the room is caused, and the reasons are combined, so that the sound field in the room is disordered, and the overall hearing and singing experience effect is affected.
In addition, in the existing installation mode of the loudspeaker box, the loudspeaker box is very easy to be interfered by external conditions during actual operation, so that hanging points are uneven, angle variables are large, various uncontrollable variable factors are formed, finally, unpredictable risks are brought to later debugging and use, fixed standards cannot be formed, and large-area popularization and application are not facilitated.
Disclosure of Invention
The invention aims to provide a sound box and a sound diffusion system, which are used for changing the radiation direction mode of a traditional sound box, expanding the radiation angle, achieving the purposes of using a minimum number of sound boxes after fixed installation, radiating the whole sound expansion space by more uniform sound energy and eliminating uncontrollable factors caused by the influence of external environment on the position and angle in the installation process of the sound box.
According to a first aspect of the present invention, there is provided a sound box including a box body in which angle diffusion panels and a front panel are provided, the angle diffusion panels being arranged on both sides of the front panel, the front panel protruding outward under pinching of the angle diffusion panels on both sides, the sound box further including a tweeter, a mid tweeter, and a woofer, the tweeter, the mid tweeter, and the woofer being provided to the angle diffusion panels and the front panel.
In a preferred embodiment of the sound box provided by the invention, the included angle between the angle diffusion panel and the front panel is 155-160 degrees.
In a preferred embodiment of the sound box provided by the invention, a high-pitch reflection diffusion horn is arranged in the front panel, and the mid-high pitch horn is arranged in the high-pitch reflection diffusion horn, wherein an included angle between the plane of the mid-high pitch horn and the front panel is 35 degrees.
According to the preferred embodiment of the sound box, two tweeters, four middle tweeters and two woofers are arranged in the sound box, wherein the four middle tweeters are symmetrically arranged on the angle diffusion panel and the front panel, the two woofers are symmetrically arranged on the angle diffusion panel, and the two tweeters are symmetrically arranged on the angle diffusion panel.
In a preferred embodiment of the sound box provided by the invention, the box body further comprises a rear panel, wherein the rear panel makes a 20-degree chamfer, and the front panel and the angle diffusion panel are inclined downwards by 20 degrees when the sound box is placed in the forward direction and the rear panel is vertical.
According to the preferred embodiment of the sound box, the sound box further comprises a guide tube, and the guide tube is arranged at the bottom of the box body.
In a preferred embodiment of the sound box provided by the invention, the tweeter, the midrange tweeter and the woofer are connected in series or in parallel through a frequency divider.
According to a second aspect of the present invention, there is provided a sound diffusing system comprising a plurality of sound boxes according to the first aspect of the present invention, three diffusing horn modules are provided in each sound box, the sound diffusing angle of each diffusing horn module is 90 °, and the sound diffusing angle of each sound box is in the range of 135 °.
According to a preferred embodiment of the sound diffusing system of the present invention, the sound boxes are relatively disposed on the same horizontal plane in the same space, the speakers disposed on each of the angle diffusion panels of the sound boxes together form one of the diffusion speaker modules, and the speakers disposed on the front panel of the sound boxes together form one of the diffusion speaker modules.
According to a preferred embodiment of the sound diffusing system according to the present invention, the sound diffusing system comprises two of said sound boxes, which are suspended opposite to each other on two walls of the same room.
According to the sound box and the sound diffusion system provided by the invention, through accurately designing the sound box diffusion angle, the defect of insufficient coverage angle of a point sound source or a plane sound source of the traditional sound box is solved, each region of a listening place can be uniformly covered, for example, the included angles between the angle diffusion panels at the left side and the right side of the sound box and the positive panel are set to be 155-160 degrees, the problem of uniform coverage angle diffusion is solved, and the sound energy can be increased through sound reflection.
The sound box comprises the configurations of the two tweeters, the four mid-tweeters and the two woofers, and the plurality of speakers are connected in series or in parallel through the frequency divider and bear corresponding frequency division frequencies together, so that the sound is clearer and more full, the problems in actual operation such as uneven hanging points, large angle variable and the like in the prior art are solved, and various uncontrollable variable factors are eliminated.
Compared with the prior art, the sound box and the sound diffusion system provided by the invention can effectively and uniformly cover a sound field, the sound box is installed in the forward direction in a middle way, the direct sound of the sound box is closer, the multi-loudspeaker serial-parallel connection is used, and the sound density and the definition are higher.
Drawings
FIG. 1 (a) illustrates a prior art embodiment in which sound boxes are provided on both sides of a main visual wall;
fig. 1 (b) illustrates an embodiment in which a sound box is provided at four corners of a room in the prior art;
FIG. 2 illustrates one embodiment of the loudspeaker of the invention;
fig. 3 shows a preferred embodiment of the loudspeaker of the invention;
fig. 4 (a) and 4 (b) illustrate an embodiment of the enclosure of the sound box of the present invention;
fig. 5 shows a preferred embodiment of the loudspeaker of the invention;
fig. 6 shows the loudspeaker of the invention in a perspective view;
FIGS. 7 (a) and 7 (b) illustrate a sound diffusing system according to the present invention;
fig. 8 (a), 8 (b) illustrate the coverage area of the sound diffusing system of the present invention;
fig. 9 (a), 9 (b), 9 (c), 9 (d), 9 (e), 9 (f), 9 (g) illustrate in perspective view the area covered by the sound diffusing system of the present invention.
Detailed Description
The sound box and the sound diffusing system of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 2 illustrates an embodiment of the sound box of the present invention, and as shown in fig. 2, the sound box 100 of the present invention includes a box 110, an angle diffusion panel 120 and a front panel 130 are disposed in the box 110, the angle diffusion panel 120 is disposed at two sides of the front panel 130, the sound box 100 further includes a tweeter 140, a mid tweeter 150 and a woofer 160, and the tweeter 140, the mid tweeter 150 and the woofer 160 are disposed at the angle diffusion panel 120 and the front panel 130.
In the sound box provided by the invention, the angle diffusion panel 120 and the front panel 130 can be set to different angles so as to adapt to the sound field requirements of different spaces, for example, the overall diffusion angle of the sound box is set to 135 degrees, so that the problem of small diffusion angle of the sound box in the prior art is solved, the attenuation after sound diffusion is smaller, the sound received by ears is closer to the original sound, the experience effect is improved, the problems in actual operations such as uneven hanging point positions, large angle variation and the like in the prior art are fundamentally overcome, various uncontrollable variable factors are eliminated, and the debugging of the whole sound system in the later stage is facilitated.
Preferably, two tweeters 140, four midrange tweeters 150 and two woofers 160 are disposed in the sound box 100, wherein the four midrange tweeters 150 are symmetrically disposed on the angle diffusion panel 120 and the front panel 130, the two woofers 160 are symmetrically disposed on the angle diffusion panel 120, and the two tweeters are symmetrically disposed on the angle diffusion panel 120.
Through the reasonable configuration of the middle and high pitch horns, the experience effect of the whole sound field coverage space is enhanced. The variety and number of horns can be configured according to space requirements, power requirements, diffusion angle requirements, and impedance requirements.
For the situations of small space usage, small power requirement and narrow diffusion angle, the loudspeaker box 100 can be internally provided with three tweeters 140, three midrange tweeters 150 and two woofers 160, wherein the two midrange tweeters 150 are symmetrically arranged on the angle diffusion panel 120, one midrange tweeter 150 and one tweeter 140 are arranged on the front panel 130, the two woofers 160 are symmetrically arranged on the angle diffusion panel 120, and the two tweeters 140 are symmetrically arranged on the angle diffusion panel 120.
For the situations of large space usage, large power requirement and wide diffusion angle, the loudspeaker box 100 can be provided with two tweeters 140, four middle tweeters 150 and four woofers 160, wherein the four middle tweeters 150 are symmetrically arranged on the angle diffusion panel 120 and the front panel 130, the four woofers 160 are parallel and arranged in a group, the two tweeters are symmetrically arranged on the angle diffusion panel 120, and the two tweeters are symmetrically arranged on the angle diffusion panel 120.
Fig. 3 illustrates a preferred embodiment of the sound box of the present invention, as shown in fig. 3, in the structure of the box body 110, the angle β between the angle diffusion panel 120 and the front panel 110 is 155 ° -160 °, the angle diffusion panels 120 are symmetrically disposed at both sides of the front panel 110, and by precise angle adjustment, the problem of uniform sound diffusion in the coverage angle range is solved, and the sound energy can be increased by sound reflection.
In a preferred embodiment, a tweeter diffusion horn 170 is disposed in the front panel 110, and the mid tweeter 150 is disposed in the tweeter diffusion horn 170, wherein an angle γ between a plane of the mid tweeter 150 and the front panel 110 is 35 °.
When the embedded angle of the middle and high pitched horn is 35 degrees, the middle and high pitched sound is radiated to the sound coverage area in a crossing way through the diffusion horn, and the sound pressure of the two side areas of the sound box is enhanced.
Fig. 4 (a) and 4 (b) illustrate an embodiment of the enclosure of the sound box according to the present invention, and as shown in fig. 4 (a) and 4 (b), the enclosure 110 further includes a rear panel 180, the rear panel 180 is cut at an angle α of 20 °, and when the sound box 100 is placed in a forward direction and the rear panel 180 is vertical, the front panel 130 and the angle diffusion panel 120 are inclined downward by 20 °.
When the rear panel 180 is mounted closely to the wall, the whole sound box will be inclined downwards by 20 °. When the diffusion angle of each diffusion loudspeaker module is set to 90 degrees and the diffusion angle of each sound box is set to 135 degrees, the diffusion angle covers the front area, and the two sound boxes are installed oppositely to cover the whole area of a listening room vertically.
Fig. 5 illustrates a preferred embodiment of the sound box of the present invention, and as shown in fig. 5, a guide tube 190 is provided at the bottom of the box body 110 of the sound box 100.
In various embodiments of the loudspeaker box provided by the present invention, tweeter 140, mid-tweeter 150, and woofer 160 may be connected in series or in parallel by a divider.
Fig. 6 shows the sound box of the present invention in a perspective view, and as shown in fig. 6, the sound box 100 provided by the present invention includes a box 110, an angle diffusion panel 120 and a front panel 130 are disposed in the box 110, the angle diffusion panel 120 is disposed at both sides of the front panel 130, an included angle between the angle diffusion panel 120 and the front panel 110 is 155 ° -160 °, and the front panel 130 protrudes outwards under the clamping of the angle diffusion panels 120 at both sides.
Wherein, four mid-tweeters 150 in the sound box 100 are symmetrically arranged at the angle diffusion panel 120 and the front panel 130, two woofers 160 are symmetrically arranged at the angle diffusion panel 120, and two tweeters are symmetrically arranged at the angle diffusion panel 120.
The front panel 110 of the sound box 100 is provided with a high-pitch reflection diffusion horn 170, the middle high-pitch horn 150 is arranged in the high-pitch reflection diffusion horn 170, and the included angle between the plane of the middle high-pitch horn 150 and the front panel 110 is 35 degrees.
As can be seen from the sides of the cabinet, the rear panel 180 of the cabinet 110 is cut at 20 ° and the front panel 130 and the angle diffusion panel 120 are inclined downward at 20 ° when the cabinet 100 is placed in the forward direction and the rear panel 180 is vertical.
A junction box is provided in the upper panel of the case 110.
Fig. 7 (a) and 7 (b) illustrate a sound diffusing system provided by the present invention, and as shown in fig. 7 (a) and 7 (b), in a room, a sound diffusing system 200 provided by the present invention includes sound boxes 100 provided by the present invention, which are oppositely arranged on two walls of the room, three diffusion speaker modules are provided in each sound box 100, the sound diffusion angle of each diffusion speaker module is 90 °, and the sound diffusion angle of each sound box 100 is in the range of 135 °.
Preferably, the speakers disposed on each angular diffusion panel 120 of the loudspeaker enclosure 100 together form a diffusion speaker module 210, and the speakers disposed on the front panel 130 of the loudspeaker enclosure 100 together form a diffusion speaker module 220.
Fig. 8 (a) and 8 (b) illustrate coverage areas of the sound diffusing system according to the present invention, and as shown in fig. 8 (a) and 8 (b), the sound box 100 provided by the present invention is installed in the middle in the forward direction, so that the sound box 100 is located in the middle position in the horizontal direction of the wall, the area covered by the sound diffusing reflection angle of the sound box is larger, the diffusing angle can reach 135 °, and the sound field uniformly covers most areas of the room.
Fig. 9 (a), 9 (b), 9 (c), 9 (d), 9 (e), 9 (f), 9 (g) illustrate in perspective view the area covered by the sound diffusing system of the present invention.
In each diffusion loudspeaker module, the loudspeaker is all direct to spread angle, positive middle and high pitch 35 degree angle cross sounding, improves the directionality of each diffusion loudspeaker module to and the diffusivity of whole sound diffusion system.
The diffusion speaker module shown in fig. 9 (c) is composed of a left diffusion speaker module L of the sound box, a middle diffusion speaker module M of the sound box, and a right diffusion speaker module R of the sound box.
The left diffusion speaker module L of the sound box is composed of a tweeter 140, a midrange speaker 150 and a woofer 160 as shown in fig. 9 (c), and the panel is inclined inwards to the right side, so that the included angle between the angle diffusion panel and the front panel is 155 ° -160 ° as shown in fig. 3, and the diffusion is diffused at an angle of 90 ° as shown in fig. 9 (d).
The diffusion loudspeaker module M in the sound box is composed of two midrange loudspeakers 150 as shown in fig. 9 (c), the panel embedded in the midrange loudspeakers 150 is concave by 35 degrees as shown in an included angle gamma in fig. 3, and the two midrange loudspeakers are crossed and diffused oppositely as shown in fig. 9 (e) and fig. 9 (f).
The right diffusion speaker module R of the sound box is composed of a tweeter 140, a midrange speaker 150 and a woofer 160 as shown in fig. 9 (c), and the panel is inclined inward to the left side, so that the angle between the angle diffusion panel and the front panel is 155 ° -160 ° as shown in fig. 3, and the diffusion is diffused at an angle of 90 ° as shown in fig. 9 (g).
In summary, in the different embodiments of the sound box and the sound diffusing system provided by the invention, the defect of insufficient coverage angle of the point sound source or the plane sound source of the traditional sound box is solved by accurately designing the diffusion angle of the sound box, and each region of the listening place can be uniformly covered, for example, the included angles between the angle diffusion panels at the left side and the right side of the sound box and the positive panel are set to 155 ° -160 °, so that the problem of uniform diffusion of the coverage angle is solved, and the sound energy can be increased by sound reflection.
The key point is that the sound box comprises the number of the loudspeakers, each sound box comprises the configuration of two tweeters, four mid-tweeters and two woofers, and the plurality of loudspeakers are connected in series or in parallel through the frequency divider and jointly bear corresponding frequency division frequencies, so that the sound is clearer and fuller, the problems in actual operation such as uneven hanging point positions, large angle variation and the like in the prior art are overcome, and various uncontrollable variable factors are eliminated.
Compared with the prior art, the sound box and the sound diffusion system provided by the invention can effectively and uniformly cover a sound field, the sound box is installed in the forward direction in a middle way, the direct sound of the sound box is closer, the multi-loudspeaker serial-parallel connection is used, and the sound density and the definition are higher.
The foregoing describes preferred embodiments of the invention, but the spirit and scope of the invention is not limited to the specific disclosure herein. Those skilled in the art can make any combination and extension of the above embodiments according to the teachings of the present invention to make further embodiments and applications within the spirit and scope of the present invention. The spirit and scope of the present invention are not limited by the specific embodiments, but by the appended claims.
Claims (9)
1. A sound box comprises a box body and is characterized in that,
an angle diffusion panel and a front panel are provided in the case, the angle diffusion panels being disposed at both sides of the front panel such that the front panel protrudes outward,
the sound box also comprises a tweeter, a midrange tweeter and a woofer,
the tweeter, the midrange tweeter and the woofer are arranged on the angle diffusion panel and the front panel,
the included angle between the angle diffusion panel and the front panel is 155-160 degrees,
the front panel is internally provided with a high-pitch reflection diffusion horn, the middle-high pitch horn is arranged in the high-pitch reflection diffusion horn, the included angle between the plane where the middle-high pitch horn is arranged and the front panel is 35 degrees,
two tweeters and four midrange tweeters are arranged in the sound box, and two woofers are arranged in the sound box, wherein the four midrange tweeters are symmetrically arranged in the angle diffusion panel and the front panel, the two woofers are symmetrically arranged in the angle diffusion panel, and the two tweeters are symmetrically arranged in the angle diffusion panel.
2. The loudspeaker of claim 1, wherein the enclosure further comprises a rear panel, the rear panel being chamfered, the front panel and the angle diffusion panel being inclined downward when the loudspeaker is placed in a forward direction and the rear panel is vertical.
3. The sound box of claim 2, wherein the rear panel is beveled 20 ° and the front panel and angle diffusion panel are beveled 20 ° downward when the sound box is placed in a forward direction and the rear panel is upright.
4. The sound box of claim 1, further comprising a guide tube disposed at a bottom of the box.
5. The sound box according to any one of claims 1 to 4, wherein the tweeter, the mid tweeter and the woofer are connected in series or in parallel by a frequency divider.
6. A sound diffusing system comprising a plurality of sound boxes according to any one of claims 1-5, wherein three diffusing horn modules are provided in each sound box.
7. The sound diffusing system of claim 6, wherein said speakers are disposed in the same horizontal plane in the same space, and wherein said speakers disposed on each of said angular diffusing panels of said speakers together form one of said diffusing speaker modules, and wherein said speakers disposed on said front panel of said speakers together form one of said diffusing speaker modules.
8. The sound diffusing system of claim 6 or 7, wherein said sound diffusing system comprises two of said sound boxes, said sound boxes being oppositely suspended from two walls of a same room.
9. The sound diffusing system of claim 8, wherein two of said sound boxes are each positioned horizontally centered on two of said walls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910430583.4A CN109996146B (en) | 2019-05-22 | 2019-05-22 | Sound box and sound diffusion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910430583.4A CN109996146B (en) | 2019-05-22 | 2019-05-22 | Sound box and sound diffusion system |
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| Publication Number | Publication Date |
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| CN109996146A CN109996146A (en) | 2019-07-09 |
| CN109996146B true CN109996146B (en) | 2024-02-20 |
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| CN201910430583.4A Active CN109996146B (en) | 2019-05-22 | 2019-05-22 | Sound box and sound diffusion system |
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| CN201585118U (en) * | 2009-11-10 | 2010-09-15 | 深圳市索菱实业有限公司 | Vehicular multimedia sound box structure |
| WO2013181723A2 (en) * | 2012-06-06 | 2013-12-12 | "Тракс Аудио" Еоод | Low frequency folded corner horn |
| CN103546844A (en) * | 2012-07-11 | 2014-01-29 | 黄庆聪 | Multi-frictional-frequency loudspeaker box using three-dimensional wide-angle sound wave diffusion |
| CN203734818U (en) * | 2014-03-07 | 2014-07-23 | 何向斌 | Horn-type point sound source sound box |
| CN204119467U (en) * | 2014-09-06 | 2015-01-21 | 广州市乐佳电器有限公司 | A kind of audio amplifier |
| CN209545856U (en) * | 2019-05-22 | 2019-10-25 | 北京麦颂文化传播有限公司 | Speaker and sound diffusion systems |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8014545B2 (en) * | 2006-12-18 | 2011-09-06 | Dei Headquarters, Inc. | Ceiling or wall-mounted loudspeaker system with anti-diffraction wave launch device |
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2019
- 2019-05-22 CN CN201910430583.4A patent/CN109996146B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201585118U (en) * | 2009-11-10 | 2010-09-15 | 深圳市索菱实业有限公司 | Vehicular multimedia sound box structure |
| WO2013181723A2 (en) * | 2012-06-06 | 2013-12-12 | "Тракс Аудио" Еоод | Low frequency folded corner horn |
| CN103546844A (en) * | 2012-07-11 | 2014-01-29 | 黄庆聪 | Multi-frictional-frequency loudspeaker box using three-dimensional wide-angle sound wave diffusion |
| CN203734818U (en) * | 2014-03-07 | 2014-07-23 | 何向斌 | Horn-type point sound source sound box |
| CN204119467U (en) * | 2014-09-06 | 2015-01-21 | 广州市乐佳电器有限公司 | A kind of audio amplifier |
| CN209545856U (en) * | 2019-05-22 | 2019-10-25 | 北京麦颂文化传播有限公司 | Speaker and sound diffusion systems |
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| CN109996146A (en) | 2019-07-09 |
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