CN112822611B - Coaxial composite loudspeaker applied to linear array - Google Patents
Coaxial composite loudspeaker applied to linear array Download PDFInfo
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- CN112822611B CN112822611B CN202110047407.XA CN202110047407A CN112822611B CN 112822611 B CN112822611 B CN 112822611B CN 202110047407 A CN202110047407 A CN 202110047407A CN 112822611 B CN112822611 B CN 112822611B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
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Abstract
The invention discloses a coaxial composite loudspeaker applied to a linear array, relating to the technical field of loudspeakers and having the technical scheme key points that: the loudspeaker comprises a plurality of radiation units in a linear array, wherein each radiation unit consists of a composite loudspeaker and a sound box body; the composite loudspeaker comprises a basin frame, a high-frequency vibrating diaphragm, a low-frequency vibrating diaphragm and a waveguide device which are coaxially arranged in sequence, wherein the bottom surface of the waveguide device is contacted with the inner bottom surface of the basin frame; the low-frequency vibrating diaphragm is in a cone-basin shape annularly arranged around the sound cavity, the wide-mouth end of the low-frequency vibrating diaphragm is connected with the wide-mouth edge of the basin stand in a sealing mode, and the other end of the low-frequency vibrating diaphragm is connected with the inner bottom surface of the basin stand. A linear array loudspeaker system is formed by the radiation units formed by a single coaxial composite loudspeaker, so that the situations that a plurality of loudspeakers with different frequency ranges in the traditional radiation units interfere with each other and the installation area of a front baffle is large are avoided.
Description
Technical Field
The invention relates to the technical field of loudspeakers, in particular to a coaxial composite loudspeaker applied to a linear array.
Background
Conventional point source speaker systems require numerous speakers to achieve effective sound reinforcement in large stadiums or open air environments while maintaining a desired sound pressure level while achieving adequate coverage. Even with accurate acoustic calculations, the projected overlap of each loudspeaker box is unavoidable. This can lead to interference, producing uneven coverage with a significant reduction in sound pressure level and clarity at large distances. In recent years, the technology and application of line array speaker system have been rapidly developed. Line array loudspeaker systems are of great interest to professionals in the electro-acoustic industry as a result of high technology. The line array loudspeaker system has unique electroacoustic advantages in radiation sound power, projection coverage distance, frequency characteristic, vertical directivity, high playback resolution, sound quality definition, distortion, linear phase and the like. Therefore, the present invention is widely used in large sound reinforcement places such as large stadiums and open environments.
The linear array loudspeaker system is mainly characterized in that the directivity is narrow wave beams in the vertical plane of the main shaft, the energy superposition can radiate in a long distance, and the directional radiation distance can be adjusted by adjusting the number of radiation units and the separation angle between each unit. The linear array is composed of a group of radiation units which are arranged in a straight line (or an approximate straight line), are closely spaced and have the same amplitude (same caliber and same type) and the same phase. The separation angle between each radiating element is adjustable. Each element radiates an in-phase wavefront. The combination of multiple units provides a single extended sound source. Each radiating element is formed by a loudspeaker of a different frequency band, so that sound is radiated in a substantially continuous array in each frequency band range. However, the arrangement method of the speakers in each frequency band is different, so that the comprehensive directional characteristic, the phase characteristic, the mutual interference condition and the like can be greatly changed, and the sound quality can be greatly influenced. At present, all frequency range loudspeakers on linear array radiating units on the market adopt a plane arrangement method (part of the loudspeakers adopt a medium-frequency plane and a high-frequency plane which are arranged coaxially and then are arranged with a low-frequency plane).
However, the linear array radiating elements arranged in a plane have a problem that sound sources move according to different reproduction frequencies, so that the sound sources are not well positioned and sound images are spread. If two loudspeakers in a planar arrangement are coherent sources, the signals from both loudspeakers always arrive at the same time for any position of the center line. But the other positions are not equidistant from the two loudspeakers and the sound from one loudspeaker always arrives slightly later than the sound from the other loudspeaker. Variations in listening position cause large variations in frequency response. In addition, the planar arrangement of the speakers increases the area of the front panel of the line array system, and also increases the volume and weight of the line array. Furthermore, in line array loudspeaker systems, for low frequency loudspeakers, the separation distance between the centre of the loudspeakers determines their maximum operating frequency. To better extend the high frequency portion of the woofer, the distance between the centers of the woofers should be minimized. If the low frequency speaker used in the line array directly radiates sound from the cone, the low frequency speaker will be inefficient due to poor impedance matching, and thus the output sound pressure level will be low. Therefore, how to design a coaxial compound speaker applied to a linear array is a problem that we are in urgent need to solve at present.
Disclosure of Invention
The invention aims to solve the problems of sound source movement, poor positioning, sound image expansion, large mounting baffle area, large linear array volume and weight and coherent sound source interference in the plane arrangement of speakers of all frequency bands of a radiation unit of the conventional linear array speaker system.
The technical purpose of the invention is realized by the following technical scheme: a coaxial compound loudspeaker applied to a linear array comprises a plurality of radiation units in the linear array, wherein each radiation unit consists of a compound loudspeaker and a sound box body; the composite loudspeaker comprises a basin frame, a high-frequency vibrating diaphragm, a low-frequency vibrating diaphragm and a waveguide device which are coaxially arranged in sequence, wherein a magnetic circuit system is distributed in the basin frame, the bottom surface of the waveguide device is contacted with the inner bottom surface of the basin frame, a sound cavity communicated with the waveguide device is arranged in the basin frame, and the high-frequency vibrating diaphragm is positioned at the bottom of the sound cavity; the low-frequency vibrating diaphragm is in a cone-basin shape annularly arranged around the sound cavity, and the wide-mouth end of the low-frequency vibrating diaphragm is connected with the wide-mouth edge of the basin frame in a sealing mode.
By adopting the technical scheme, the high-frequency vibrating diaphragm of the coaxial composite loudspeaker is combined with the corresponding sound-producing element to vibrate to emit the high-frequency sound wave signal in the sound wave signal, and the high-frequency sound wave signal is subjected to equal-path propagation by the waveguide device and then is coupled with the high-frequency sound wave signal in the adjacent waveguide device in the same linear array, so that the high-frequency part of the linear sound source is formed; the low-frequency vibrating diaphragm of the coaxial composite loudspeaker is combined with a corresponding sound producing element to emit a low-frequency sound wave signal in the sound wave signal, and the high-frequency vibrating diaphragm, the low-frequency vibrating diaphragm and the waveguide device which are coaxially and compositely arranged provide sound reproduction in a low-frequency range and a high-frequency range, so that the number of loudspeakers arranged on the linear array radiation unit is reduced; a linear array loudspeaker system is formed by the radiation unit formed by a single coaxial composite loudspeaker, so that the situations that the mutual interference is caused by a plurality of loudspeakers with different frequency ranges in the traditional radiation unit and the installation area of the front baffle is large are effectively avoided, and the weight and the volume of the linear array are also reduced.
The invention is further configured to: the waveguide device comprises a waveguide tube and a choke plug located in the waveguide tube, wherein the waveguide tube is back to the open end of the basin frame and is provided with a quasi-rectangular wide opening, the quasi-rectangular wide opening is arranged along the diameter direction of the basin frame, and the quasi-rectangular wide opening is arranged along the two sides of the length direction of the quasi-rectangular wide opening and the end surface gap of the low-frequency vibrating diaphragm.
By adopting the technical scheme, the outlet side of the waveguide device is closely spaced with the edge of the end face of the low-frequency vibrating diaphragm, and when the radiating units formed by the coaxial composite loudspeaker are linearly arranged, the linear array is favorable for better coupling of sound waves of the adjacent radiating units to form a linear sound source.
The invention is further configured to: the throat plug is a cone-like body formed by symmetrically beveling two parts along the diameter direction on the end surface of the cone, and the tip of the throat plug points to the sound cavity.
By adopting the technical scheme, the curved surface of the tip part of the throat plug and the inner wall of the waveguide tube can form equal sound wave path waveguide, and meanwhile, the oblique plane can effectively guide the sound wave of the radiation unit to be coupled to form a linear sound source.
The invention is further configured to: and the gap distance between the two sides of the waveguide tube and the end face of the low-frequency vibrating diaphragm is 0.5-5 mm.
By adopting the technical scheme, the waveguide tube and the low-frequency vibrating diaphragm are in a close-spaced state.
The invention is further configured to: the length directions of the open ends of the wave guide pipes in the adjacent radiation units are arranged along the same straight line direction.
By adopting the technical scheme, the adjacent radiation units can effectively form a line sound source.
The invention is further configured to: the waveguide tube is characterized in that two clapboards are symmetrically arranged on the side face of the waveguide tube, the arrangement direction of the two clapboards is perpendicular to the length arrangement direction of the waveguide tube, and the low-frequency sounding part is divided into four sounding units by the two clapboards and the waveguide tube.
Through adopting above-mentioned technical scheme, four are cut apart into to baffle, waveguide tube with the region of low frequency vibrating diaphragm vibration sound production, and the low frequency sound center is transformed into the off-axis position of mutual symmetry by the circular cone center of low frequency vibrating diaphragm to this reduces the spacing distance of two adjacent radiating element low frequency sound sources of linear array, thereby has improved the high frequency extension of low frequency sound producing unit, brings positive effect for radiating element in whole audible frequency band, effectively improves sound tone quality.
The invention is further configured to: and a compression cavity is formed between the waveguide device and the low-frequency vibrating diaphragm in a clearance arrangement mode.
Through adopting above-mentioned technical scheme, waveguide device is located the place ahead of low frequency vibrating diaphragm to form the compression chamber with the low frequency vibrating diaphragm, when low frequency vibrating diaphragm vibration drive air sound production, the compression chamber has improved the acoustic load effectively, thereby has improved woofer's efficiency, makes the sound pressure level in the coverage increase.
Compared with the prior art, the invention has the following beneficial effects:
1. the linear array loudspeaker system is formed by the radiation unit formed by a single coaxial composite loudspeaker, so that the situations that a plurality of loudspeakers with different frequency ranges in the traditional radiation unit interfere with each other and the installation area of a front baffle is large are avoided;
2. the high-frequency sounding part, the low-frequency sounding part and the waveguide device are coaxially arranged, and an outlet of the waveguide device is closely spaced with the edge of a port of the low-frequency cone basin and can be well coupled into a linear sound source;
3. the partition plate on the waveguide device divides the low-frequency sounding part into small sounding units, and the position of the low-frequency sounding center is changed, so that the spacing distance between adjacent low-frequency sounding centers in the linear array is changed, and the high-frequency extension of the low-frequency sounding units is improved;
4. the waveguide device is coaxially arranged with the low-frequency vibrating diaphragm and is positioned in front of the low-frequency cone-basin vibrating diaphragm, and can compress air driven by the cone-basin low-frequency vibrating diaphragm so as to improve the output sound power of the air, so that the sound pressure level in the coverage range is increased.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic illustration of the distribution of a radiating single linear array in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a coaxial compound speaker according to an embodiment of the present invention;
FIG. 3 is a schematic view of the internal structure in an embodiment of the present invention;
FIG. 4 is a schematic view of the structure of a waveguide device in an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a laryngeal plug in an embodiment of the present invention.
Reference numbers and corresponding part names in the drawings:
101. a basin stand; 102. a low-frequency vibrating diaphragm; 103. a compression chamber; 104. a sound cavity; 105. a high-frequency vibrating diaphragm; 106. a radiation unit; 201. a waveguide arrangement; 202. a waveguide; 203. a laryngeal plug; 204. a separator.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the following examples and accompanying fig. 1-5, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not used as limiting the present invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Example (b): a coaxial compound loudspeaker applied to a linear array, as shown in fig. 1-3, comprises a plurality of radiation units 106 in a linear array, wherein the radiation units 106 are composed of a compound loudspeaker and a sound box body; the composite loudspeaker comprises a frame 101, a high-frequency vibrating diaphragm 105, a low-frequency vibrating diaphragm 102 and a waveguide device 201 which are coaxially arranged in sequence, wherein a magnetic circuit system (not shown in the figure) is distributed in the frame 101, the bottom surface of the waveguide device 201 is contacted with the inner bottom surface of the frame 101, a sound cavity 104 communicated with the waveguide device 201 is arranged in the frame 101, and the high-frequency vibrating diaphragm 105 is positioned at the bottom of the sound cavity 104; the low-frequency diaphragm 102 is in a cone-shaped shape annularly arranged around the sound cavity 104, and a wide-mouth end of the low-frequency diaphragm 102 is connected with the wide-mouth edge of the basin frame 101 in a sealing manner. The high-frequency diaphragm 105 of the coaxial composite loudspeaker is combined with a corresponding sound generating element to vibrate to generate a high-frequency sound wave signal in the sound wave signal, and the high-frequency sound wave signal is propagated by the waveguide device 201 in equal paths and then coupled with a high-frequency sound wave signal in an adjacent waveguide device 201 in the same linear array, so that a high-frequency part of a linear sound source is formed; the low-frequency vibrating diaphragm 102 of the coaxial composite loudspeaker is combined with a corresponding sound generating element to send out a low-frequency sound wave signal in the sound wave signals, and the high-frequency vibrating diaphragm 105, the low-frequency vibrating diaphragm 102 and the waveguide device 201 which are coaxially and compositely arranged provide sound reproduction in a low-frequency range and a high-frequency range, so that the number of loudspeakers arranged on the linear array radiation unit 106 is reduced; the linear array loudspeaker system is formed by the radiation unit 106 formed by a single coaxial composite loudspeaker, so that the situations that the mutual interference is caused by a plurality of loudspeakers with different frequency bands of the traditional radiation unit 106 and the installation area of a front baffle is large are effectively avoided, and the weight and the volume of the linear array are also reduced.
As shown in fig. 3 and 4, the waveguide device 201 includes a waveguide tube 202 and a choke 203 located in the waveguide tube 202, an open end of the waveguide tube 202 facing away from the frame 101 is a quasi-rectangular wide mouth, the quasi-rectangular wide mouth is arranged along a diameter direction of the frame 101, and two sides of the quasi-rectangular wide mouth along a length direction of the quasi-rectangular wide mouth are arranged in a gap with an end surface of the low-frequency diaphragm 102. The outlet side of the waveguide device 201 is closely spaced to the edge of the end face of the low-frequency diaphragm 102, which, when the radiating elements 106 consisting of coaxial compound loudspeakers are arranged linearly, contributes to better acoustic coupling of the adjacent radiating elements 106 in the linear array to form a line sound source.
As shown in fig. 3 and 5, the throat plug 203 is a cone-like body formed by symmetrically chamfering two parts along the diameter direction on the end surface of the cone, and the tip of the throat plug 203 is arranged to point to the sound cavity 104. The curved surface of the tip of the throat plug 203 and the inner wall of the waveguide 202 can form an equal sound path waveguide, and the inclined plane can effectively guide the sound wave coupling of the radiation unit 106 to form a linear sound source.
As shown in fig. 3, in this embodiment, the distance between the two sides of the waveguide 202 and the end surface of the low-frequency diaphragm 102 is 0.5mm to 5mm, so that the waveguide 202 and the low-frequency diaphragm 102 are closely spaced.
As shown in fig. 1, the length directions of the open ends of the waveguides 202 in the adjacent radiation units 106 are arranged along the same straight line direction, which ensures that the adjacent radiation units 106 can effectively form a line sound source.
As shown in fig. 1 and 2, two partition plates 204 are symmetrically disposed on the side surface of the waveguide 202, the arrangement direction of the two partition plates 204 is perpendicular to the length arrangement direction of the waveguide 202, and the two partition plates 204 and the waveguide 202 divide the low-frequency sound generating portion into four sound generating units. The partition 204 and the waveguide 202 divide the vibration sound-producing area of the low-frequency diaphragm 102 into four blocks, and the low-frequency sound center is transformed into the symmetrical off-axis position by the cone center of the low-frequency diaphragm 102, so that the spacing distance between the low-frequency sound sources of two adjacent radiation units 106 of the linear array is reduced, the high-frequency extension of the low-frequency sound-producing units is improved, the radiation units 106 are provided with positive effects in the whole audible frequency band, and the sound quality is effectively improved.
As shown in fig. 3, a compression chamber 103 is formed by the waveguide device 201 and the low frequency diaphragm 102 in a spaced arrangement. The waveguide device 201 is located in front of the low frequency diaphragm 102 and forms a compression chamber 103 with the low frequency diaphragm 102, and when the low frequency diaphragm 102 vibrates to drive air to produce sound, the compression chamber 103 effectively increases the acoustic load, thereby increasing the efficiency of the low frequency speaker and increasing the sound pressure level within the coverage area.
The working principle is as follows: the radiation unit 106 formed by a single coaxial composite loudspeaker is used for forming a linear array loudspeaker system, so that the situations that the mutual interference is caused by a plurality of loudspeakers with different frequency ranges of the traditional radiation unit 106 and the installation area of a front baffle is large are avoided; the high-frequency sounding part, the low-frequency sounding part and the waveguide device 201 are coaxially arranged, and the outlet of the waveguide device 201 is closely spaced with the edge of the port of the low-frequency cone, so that a linear sound source can be well coupled; the partition plate 204 on the waveguide device 201 divides the low-frequency sounding part into small sounding units, so that the position of the low-frequency sounding center is changed, the spacing distance between adjacent low-frequency sounding centers in the linear array is changed, and the high-frequency extension of the low-frequency sounding units is improved; the waveguide device 201 is coaxially arranged with the low-frequency diaphragm 102, is located in front of the low-frequency cone-shaped diaphragm, and can compress air driven by the cone-shaped low-frequency diaphragm 102 to increase output sound power thereof, so that sound pressure level in a coverage range is increased.
The above embodiments are provided to further explain the objects, technical solutions and advantages of the present invention in detail, it should be understood that the above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the scope of the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (5)
1. A coaxial compound loudspeaker applied to linear array comprises a plurality of radiation units (106) in linear array, and is characterized in that the radiation units (106) consist of a compound loudspeaker and a sound box body; the composite loudspeaker comprises a basin frame (101), a high-frequency vibrating diaphragm (105), a low-frequency vibrating diaphragm (102) and a waveguide device (201) which are coaxially arranged in sequence, wherein a magnetic circuit system is distributed in the basin frame (101), the bottom surface of the waveguide device (201) is contacted with the inner bottom surface of the basin frame (101), a sound cavity (104) communicated with the waveguide device (201) is arranged in the basin frame (101), and the high-frequency vibrating diaphragm (105) is positioned at the bottom of the sound cavity (104); the low-frequency vibrating diaphragm (102) is in a cone-basin shape annularly arranged along the periphery of the sound cavity (104), and the wide-mouth end of the low-frequency vibrating diaphragm (102) is connected with the wide-mouth edge of the basin frame (101) in a sealing way;
the waveguide device (201) comprises a waveguide tube (202) and a choke plug (203) positioned in the waveguide tube (202), wherein the opening end of the waveguide tube (202), which is back to the basin frame (101), is a quasi-rectangular wide mouth, the quasi-rectangular wide mouth is distributed along the diameter direction of the basin frame (101), and the two sides of the quasi-rectangular wide mouth along the length direction of the quasi-rectangular wide mouth are arranged in a clearance way with the end surface of the low-frequency vibrating diaphragm (102);
the waveguide tube (202) is symmetrically provided with two clapboards (204) on the side surface, the arrangement direction of the two clapboards (204) is perpendicular to the length arrangement direction of the waveguide tube (202), and the low-frequency sound production part is divided into four sound production units by the two clapboards (204) and the waveguide tube (202), so that the low-frequency sound center is converted into an off-axis position which is symmetrical to each other from the conical center of the low-frequency vibrating diaphragm (102).
2. The coaxial composite loudspeaker applied to the linear array as claimed in claim 1, wherein the throat plug (203) is a cone-like body formed by symmetrically chamfering two parts along the diameter direction on the end surface of the cone, and the tip of the throat plug (203) points to the sound cavity (104).
3. The coaxial compound loudspeaker applied to the linear array as claimed in claim 1, wherein the distance between the two sides of the waveguide (202) and the end face of the low-frequency diaphragm (102) is 0.5mm-5 mm.
4. The coaxial compound loudspeaker in line array according to claim 1, wherein the length directions of the open ends of the waveguides (202) of adjacent radiating elements (106) are arranged along the same straight line direction.
5. A coaxial compound loudspeaker for linear array applications as claimed in claim 1, wherein the waveguide means (201) is spaced apart from the low frequency diaphragm (102) to form a compression chamber (103).
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| CN202110047407.XA CN112822611B (en) | 2021-01-14 | 2021-01-14 | Coaxial composite loudspeaker applied to linear array |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0898292A (en) * | 1994-03-02 | 1996-04-12 | Sony Corp | Loudspeaker device |
| US6513622B1 (en) * | 1999-11-02 | 2003-02-04 | Harman International Industries, Incorporated | Full-range loudspeaker system for cinema screen |
| CN101904180A (en) * | 2007-12-18 | 2010-12-01 | 松下电器产业株式会社 | Speaker device having directivity adjustment panel |
| CN201904908U (en) * | 2010-12-30 | 2011-07-20 | 广州市锐丰建业灯光音响器材有限公司 | Novel combination type linear array loudspeaker system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6343133B1 (en) * | 1999-07-22 | 2002-01-29 | Alan Brock Adamson | Axially propagating mid and high frequency loudspeaker systems |
| GB2442260A (en) * | 2006-09-29 | 2008-04-02 | Martin Audio Ltd | Loudspeaker diaphragm conforms to surrounding acoustic surface |
| CN103533480B (en) * | 2012-07-06 | 2016-12-21 | 顾康 | A kind of high-frequency sound wave focuser |
| KR101515614B1 (en) * | 2014-03-20 | 2015-04-28 | 김태형 | Lattice-Type Speaker, and Lattice Array Speaker System Having the Same |
| CN209151312U (en) * | 2018-11-01 | 2019-07-23 | 广州市裕创声光科技有限公司 | A kind of coaxial linear array speaker |
| CN209419834U (en) * | 2018-11-22 | 2019-09-20 | 深圳市三诺数字科技有限公司 | A kind of coaxial loudspeaker |
-
2021
- 2021-01-14 CN CN202110047407.XA patent/CN112822611B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0898292A (en) * | 1994-03-02 | 1996-04-12 | Sony Corp | Loudspeaker device |
| US6513622B1 (en) * | 1999-11-02 | 2003-02-04 | Harman International Industries, Incorporated | Full-range loudspeaker system for cinema screen |
| CN101904180A (en) * | 2007-12-18 | 2010-12-01 | 松下电器产业株式会社 | Speaker device having directivity adjustment panel |
| CN201904908U (en) * | 2010-12-30 | 2011-07-20 | 广州市锐丰建业灯光音响器材有限公司 | Novel combination type linear array loudspeaker system |
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