CN103313162A - Dual-speaker headphone - Google Patents
Dual-speaker headphone Download PDFInfo
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- CN103313162A CN103313162A CN2013102573056A CN201310257305A CN103313162A CN 103313162 A CN103313162 A CN 103313162A CN 2013102573056 A CN2013102573056 A CN 2013102573056A CN 201310257305 A CN201310257305 A CN 201310257305A CN 103313162 A CN103313162 A CN 103313162A
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- loudspeaker
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Abstract
The invention provides a dual-speaker headphone comprising a hollow shell, a bass passive radiator located in the shell, a tweeter and a woofer. The tweeter is opposite to the woofer. An inner cavity of the shell is divided into a front cavity for accommodating the tweeter and a rear cavity for accommodating the woofer by the bass passive radiator. The structure edge of each of the woofer and the tweeter is provided with a smooth surface, and a sound surface of each of the woofer and the tweeter faces the outside of the shell. A conical diffuser is disposed in front of the back of the woofer while another conical diffuser is disposed in front of the sound surface of the tweeter. As to the part of the shell, used for forming the rear cavity, the area corresponding to the sound surface of the woofer is in a mesh enclosure structure, and the area connected with the bass passive radiator is provided with a pressure-equalizing inverter hole or pressure-equalizing inverter tube. An independent sound cavity provided with a pressure-equalizing inverter hole or pressure-equalizing inverter tube is further formed in the front cavity. The tweeter is located in the independent sound cavity. The dual-speaker headphone is capable of inhibiting wind noise and standing wave, so that sound pressure balance is improved and eardrum stress is relieved.
Description
Technical field
The present invention relates to the earphone technical field, relate in particular to a kind of double horn earphone.
Background technology
As shown in Figure 1, the acoustic construction of existing headphone generally comprises auricular concha 10, is positioned at the loudspeaker (loud speaker) 11 of auricular concha 10 inside, is nested in the earmuff 12 on the auricular concha, auricular concha 10 generally is comprised of forward and backward shell, forms respectively ante-chamber 13 and back cavity 14 under the interval of loudspeaker 11.Wherein, the structure section of loudspeaker 11 and face meet rib place (shown in dotted line frame a, b among Fig. 1) and are corner angle minute Ming Dynasty style design, mostly be between the vibrating diaphragm sounding face 110 of loudspeaker 11 and the auricular concha 10 forward and backward shell surfaces and be close to the run-in index design, and back cover mostly is closed design, only increases where necessary the sound pressure equalization characteristic that simple balancing orifice 100 is adjusted front/back cavity.
There is following defective in the acoustic construction design of existing headphone:
1, exist wind to make an uproar: because the structure section of loudspeaker and face wiring place are corner angle minute Ming Dynasty style design, when so the instant acoustic velocity current, that back cavity is inner is larger, modulation sound wave (wind is made an uproar) is disturbed in the pulsation that can produce the cutting steam flow mutually, and this sound wave produces the definition that can make head ear-phone system sound when more to a certain degree decline.
2, standing wave causes distortion: generally mostly be between the vibrating diaphragm sounding face of earphone horn and the forward and backward shell surface and be close to the run-in index design, thereby can there be more standing wave, cause on interior some acoustic pressure enhancing of putting of cavity and some point and weaken, therefore before and after making in the chamber acoustic pressure inhomogeneous, so the inequality of the acoustic pressure after synthetic and cause sound distortion.
3, low-frequency sound pressure causes constriction to ear-drum: to the sound horn energy, main concentration of energy is in low-frequency range, and the back cover of conventional headphone (being used for low frequency) mostly is closed design, the acoustic pressure of this back cover and back cavity only increases where necessary balancing orifice, so can produce constriction to ear-drum.
4, the front/back cavity sound wave is balanced not good with the resonant selecting frequency characteristic: the earphone back cover only adopts balancing orifice to adjust the sound pressure equalization characteristic of front/back cavity usually, easily cause in the sound pressure equalization process the acoustic pressure of certain frequency range synthetic inconsistently, affect the balanced and resonant selecting frequency characteristic of front/back cavity sound wave.
Therefore, need a kind of double horn earphone, to avoid defects.
Summary of the invention
The object of the present invention is to provide a kind of double horn earphone, can suppress that wind is made an uproar, the generation of standing wave, improve the sound pressure equalization characteristic, reduce the constriction that low-frequency sound pressure causes ear-drum.
For addressing the above problem, the invention provides a kind of double horn earphone, comprise hollow auricular concha and be arranged in the bass passive radiator of auricular concha and the high and low sound loudspeaker of opposing setting; Described bass passive radiator is spaced apart the ante-chamber of placing loudspeaker and the back cavity of placing bass horn with the auricular concha inner chamber, the structural edge of described bass horn and loudspeaker is smooth curved surface, sounding face is all outside auricular concha, and sounding face the place ahead of the place ahead, the back side of described bass horn and loudspeaker is equipped with cone-shaped diffuser; Described auricular concha be used for to consist of the part of back cavity, and the zone relative with described bass horn sounding face is guard, and the zone that joins with described bass passive radiator is provided with all presses paraphase hole or all press phase-reversing tube; Also be provided with in the described ante-chamber with all pressing paraphase hole or all pressing the independent operatic tunes of phase-reversing tube, described loudspeaker is arranged in the described independent operatic tunes.
Further, the globoidal structure of described guard for outwards arching upward, and between the sounding face of described bass horn the space is arranged.
Further, described guard is steel mesh, and the diameter of every steel mesh silk is more than 0.8mm.
Further, the arm of angle length of the chamfering of the structural edge of described high and low sound loudspeaker is more than 1.5mm.
Further, described auricular concha is used for consisting of the part of back cavity, the up and down zone that joins with described bass passive radiator is equipped with all presses paraphase hole or all presses phase-reversing tube, described all to press paraphase hole or all press the edge of phase-reversing tube be smooth curved surface, and the arm of angle length of the chamfering at described edge is more than 1.5mm.
Further, also be provided with the curved surface sound absorber around the described bass horn, the curved surface of described curved surface sound absorber extends on the described auricular concha from the side front end of bass horn.
Further, the cone-shaped diffuser at the described bass horn back side is two structures that the facies basialis pyramidises docking forms.
Further, the cavity wall of the described independent operatic tunes is smooth curved surface.
Further, the sidewall of described ante-chamber is provided with the curved surface sound-conducting body, and the curved surface of described curved surface sound-conducting body is from extending to the front end of described ante-chamber with described bass passive radiator joint.
Further, described bass passive radiator is plate cone, and the edge is provided with ring.
Compared with prior art, double horn earphone provided by the invention comprises hollow auricular concha and is arranged in the bass passive radiator of auricular concha and the high and low sound loudspeaker of opposing setting; Described bass passive radiator is spaced apart the ante-chamber of placing loudspeaker and the back cavity of placing bass horn with the auricular concha inner chamber, the structural edge of described bass horn and loudspeaker is smooth curved surface, sounding face is all outside auricular concha, and sounding face the place ahead of the place ahead, the back side of described bass horn and loudspeaker is equipped with cone-shaped diffuser; Described auricular concha be used for to consist of the part of back cavity, and the zone relative with described bass horn sounding face is net cover structure, and the zone that joins with described bass passive radiator is provided with all presses paraphase hole or all press phase-reversing tube; Also be provided with in the described ante-chamber with all pressing paraphase hole or all pressing the independent operatic tunes of phase-reversing tube, described loudspeaker is arranged in the described independent operatic tunes.Double horn earphone of the present invention, edge smooth curved surface and paraphase hole by guard and high and low sound loudspeaker have suppressed the generation that the wind under the high velocity air is made an uproar; Described ante-chamber comprises the passive type bass operatic tunes and the independent operatic tunes, the bass component coefficient of elasticity of loudspeaker is reduced greatly, do not reduce simultaneously its operating efficiency, and so that high and low sound loudspeaker are separately independent, make it carry out the independent control of electromagnetic force at magnetic circuit separately, thereby reach the elastic equilibrium on the high and low sound range, improved the sound pressure equalization flatness at lower frequency region, reduce acoustic pressure to the constriction of ear-drum; Simultaneously by the cone-shaped diffuser on the high and low sound loudspeaker and all press paraphase hole or all press phase-reversing tube, high velocity air in the chamber is redirected distribution, avoid column type high velocity air and chamber face direct collision and air-flow is torn, thereby suppressed to a certain extent the generation of standing wave.
Description of drawings
Fig. 1 is the structural representation of a kind of headphone in the prior art;
Fig. 2 is the structural representation of the double horn earphone of the specific embodiment of the invention;
Fig. 3 is that the high and low speech of double horn earphone shown in Figure 2 is pressed balanced sound travel figure;
Fig. 4 is air-flow guiding figure in the chamber of double horn earphone shown in Figure 2.
Embodiment
Core concept of the present invention is to disclose a kind of double horn earphone, comprises hollow auricular concha and is arranged in the bass passive radiator of auricular concha and the high and low sound loudspeaker of opposing setting; Described bass passive radiator is spaced apart the ante-chamber of placing loudspeaker and the back cavity of placing bass horn with the auricular concha inner chamber, the structural edge of described bass horn and loudspeaker is smooth curved surface, sounding face is all outside auricular concha, and sounding face the place ahead of the place ahead, the back side of described bass horn and loudspeaker is equipped with cone-shaped diffuser; Described auricular concha be used for to consist of the part of back cavity, and the zone relative with described bass horn sounding face is net cover structure, and the zone that joins with described bass passive radiator is provided with all presses paraphase hole or all press phase-reversing tube; Also be provided with in the described ante-chamber with all pressing paraphase hole or all pressing the independent operatic tunes of phase-reversing tube, described loudspeaker is arranged in the described independent operatic tunes.Double horn earphone of the present invention, edge smooth curved surface and paraphase hole by guard and high and low sound loudspeaker have suppressed the generation that the wind under the high velocity air is made an uproar; Described ante-chamber comprises the passive type bass operatic tunes and the independent operatic tunes, the bass component coefficient of elasticity of loudspeaker is reduced greatly, do not reduce simultaneously its operating efficiency, and so that high and low sound loudspeaker are separately independent, make it carry out the independent control of electromagnetic force at magnetic circuit separately, thereby reach the elastic equilibrium on the high and low sound range, improved the sound pressure equalization flatness at lower frequency region, reduce acoustic pressure to the constriction of ear-drum; Simultaneously by the cone-shaped diffuser on the high and low sound loudspeaker and all press paraphase hole or all press phase-reversing tube, high velocity air in the chamber is redirected distribution, avoid column type high velocity air and chamber face direct collision and air-flow is torn, thereby suppressed to a certain extent the generation of standing wave.
For purpose of the present invention, feature are become apparent, below in conjunction with accompanying drawing the specific embodiment of the present invention is further described, yet the present invention can realize with different forms, should not think just to be confined to described embodiment.
Please refer to Fig. 2, the present embodiment provides a kind of headphone, comprises two double horn earphones and the headband that is connected two double horn earphones.Described double horn earphone comprises hollow auricular concha 200 and is arranged in the bass passive radiator 201 of auricular concha 200 and the high and low sound loudspeaker 207 of opposing setting, 206 and be nested in earmuff 214 on the auricular concha 200.Described bass passive radiator 201 can be plate cone, end is provided with ring 201a, this bass passive radiator 201 is spaced apart the ante-chamber of placing loudspeaker 207 and the back cavity 202 of placing bass horn 206 with auricular concha 200 inner chambers, and described bass horn 206 and loudspeaker 207 sounding faces are all outside auricular concha, it is the dorsad duct placement of sounding face of bass horn 206, loudspeaker 207 is placed in the independent operatic tunes that isolates in the ante-chamber, and sounding face is placed towards duct.Wherein, the chamber that auricular concha and independent operatic tunes wall form in the ante-chamber is the passive type bass operatic tunes 203, and the independent operatic tunes 204 is by all pressing paraphase hole 209 to communicate with the passive type bass operatic tunes 203.Back cavity 202 is the open active independent bass operatic tunes, the location that back cavity shell and described bass passive radiator 201 join arranges all presses phase-reversing tube 208, the zone relative with described bass horn 206 sounding faces is guard 205, back cavity 202 is by all pressing phase-reversing tube 208 to communicate with the external world, by guard 205 to extraneous sounding sound.
Wherein, the cambered surface steel net structure of described guard 205 for outwards arching upward, the diameter of every steel mesh silk is more than 0.8mm, the sounding face of the cambered surface of guard 205 and described bass horn 206 is not parallel, between the space is arranged.
In the present embodiment, the pipe of all pressing phase-reversing tube 208 of back cavity 202 all is the smooth curved surface structure along the hole of all pressing paraphase hole 209 on 210a and the independent operatic tunes 204 along 210c, and the arm of angle length of the chamfering at edge is more than 1.5mm, the structural edge of described bass horn 206 and loudspeaker 207 is smooth curved surface simultaneously, and the arm of angle length of the chamfering at edge is more than 1.5mm.Above-mentioned rounded edges structure, can prevent that the instant acoustic velocity of inside cavity from can produce the pulsation of cutting steam flow and disturbing mutually the modulation sound wave when larger, reduce wind and make an uproar, eliminated unfavorable that the angular structures of the external edge of existing face with horn structure in the earphone and face and interior edge fit edge brings.
In the present embodiment, the acoustic vibration of back cavity 202 can cause the vibration of bass passive radiator 201, thereby causes the acoustic vibration in the passive type bass operatic tunes 203.Also be provided with curved surface sound absorber 213 around the described bass horn 206, the curved surface of described curved surface sound absorber 213 extends on the described auricular concha 200 from the side front end of bass horn 206; The cavity wall of the described independent operatic tunes 204 is smooth curved surface, in conjunction with all pressing paraphase hole 209, can carry out acoustic conductance to; The sidewall of the passive type bass operatic tunes 203 is provided with curved surface sound-conducting body 210b, the curved surface of described curved surface sound-conducting body 210b is from extending to the front end of the described passive type bass operatic tunes 203 with described bass passive radiator 201 joints, and the curved surface of curved surface sound-conducting body 210b is recessed to opposite with the side curve of the cavity wall of the independent operatic tunes 204, has hyperbolic characteristic or reverse hyperbolic characteristic.
In the present embodiment, be provided with cone-shaped diffuser 211 in the place ahead, the back side of described bass horn, cone-shaped diffuser 211 is two structures that the facies basialis pyramidis docking forms, and its edge is smooth curved surface (also can regard fillet as), and its section is equivalent to two groups of hyperbolas; Sounding face the place ahead of loudspeaker 207 is provided with cone-shaped diffuser 212, and its edge also is smooth curved surface (also can regard fillet as), and the bottom is cambered surface, and is not parallel with the sounding face of described loudspeaker 207.
Please refer to Fig. 3 and Fig. 4, the double horn earphone of the present embodiment, adopted the cone-shaped diffuser 212 of the cone-shaped diffuser 211 of basso and high line and have smooth curved surface and all press the structural design of the independent operatic tunes 204 of paraphase hole 209 structures, can regulate the angle on the cavity plane of bass horn 206 sounding faces and bass passive radiator 201 and back cavity 202, regulate the angle on the cavity plane of loudspeaker 207 sounding faces and bass passive radiator 201 and the passive type bass operatic tunes 203, and the high velocity airs in the passive type bass operatic tunes 203 are redirected the place ahead (near the duct place) that is assigned to the passive type bass operatic tunes 203, avoided the direct collision of the cavity wall of column type high velocity air and the passive type bass operatic tunes 203 and the independent operatic tunes 204, thereby prevent air-flow from tearing and form polyphase factorization air-flow group, thereby can suppress to a certain extent the standing wave point that is synthesized, namely adopt the acoustic construction design of above-mentioned double horn earphone, the standing wave that can carry out from standing wave mechanism of production source to a certain degree suppresses.
Please continue with reference to figure 3 and Fig. 4, the double horn earphone of the present embodiment, adopted guard 205 to form open bass horn 206 mounting structures, adopted simultaneously back cavity (the independent active bass operatic tunes) 202, bass passive radiator 201, the independent passive type bass operatic tunes 203 and bass are all pressed the structural design of phase-reversing tube 208, can to a great extent high-octane bass component coefficient of elasticity be reduced greatly, thereby can not carry out separately elasticity control but do not reduce its operating efficiency, separately independently because of bass horn 206 and loudspeaker 207 in addition, therefore also can carry out at magnetic circuit separately the independent control of electromagnetic force, thereby reach high, elastic equilibrium on the bass range, and then reduce the constriction that low-frequency sound pressure causes ear-drum.
Please continue with reference to figure 3 and Fig. 4, the double horn earphone of the present embodiment, have on its back cavity and all press phase-reversing tube 208, the independent operatic tunes 204 is provided with and all presses paraphase hole 209, it is high that this design can be distinguished independent regulation, acoustic pressure is synthesized in the equilibrium of lower frequency region, and on certain resonance frequency, can distinguish separately and adjust, excellent its is in low-frequency range, main sound pressure equalization is regulated sound travel to be set in and all to press phase-reversing tube 208 and the sounding face (being the positive radiating surface) of bass horn 206 to locate, can be an acoustic branch so that become by the slit between earmuff 214 and the user face (flatness that affects earmuff because of elasticity between face and the earmuff produces the slit) to the balanced sound travel of bass horn 206 sounding faces, thereby improved the sound pressure equalization flatness at lower frequency region, and then before improving, the equilibrium of back cavity sound wave and resonant selecting frequency characteristic.
In sum, double horn earphone provided by the invention comprises hollow auricular concha and is arranged in the bass passive radiator of auricular concha and the high and low sound loudspeaker of opposing setting; Described bass passive radiator is spaced apart the ante-chamber of placing loudspeaker and the back cavity of placing bass horn with the auricular concha inner chamber, the structural edge of described bass horn and loudspeaker is smooth curved surface, sounding face is all outside auricular concha, and sounding face the place ahead of the place ahead, the back side of described bass horn and loudspeaker is equipped with cone-shaped diffuser; Described auricular concha be used for to consist of the part of back cavity, and the zone relative with described bass horn sounding face is net cover structure, and the zone that joins with described bass passive radiator is provided with all presses paraphase hole or all press phase-reversing tube; Also be provided with in the described ante-chamber with all pressing paraphase hole or all pressing the independent operatic tunes of phase-reversing tube, described loudspeaker is arranged in the described independent operatic tunes.The structural design of double horn earphone of the present invention can suppress that wind is made an uproar, the generation of standing wave, improves the sound pressure equalization characteristic, reduces the constriction that low-frequency sound pressure causes ear-drum.
Obviously, those skilled in the art can carry out various changes and modification to invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (10)
1. a double horn earphone is characterized in that, comprises hollow auricular concha and is arranged in the bass passive radiator of auricular concha and the high and low sound loudspeaker of opposing setting; Described bass passive radiator is spaced apart the ante-chamber of placing loudspeaker and the back cavity of placing bass horn with the auricular concha inner chamber, the structural edge of described bass horn and loudspeaker is smooth curved surface, sounding face is all outside auricular concha, and sounding face the place ahead of the place ahead, the back side of described bass horn and loudspeaker is equipped with cone-shaped diffuser; Described auricular concha be used for to consist of the part of back cavity, and the zone relative with described bass horn sounding face is guard, and the zone that joins with described bass passive radiator is provided with all presses paraphase hole or all press phase-reversing tube; Also be provided with in the described ante-chamber with all pressing paraphase hole or all pressing the independent operatic tunes of phase-reversing tube, described loudspeaker is arranged in the described independent operatic tunes.
2. double horn earphone as claimed in claim 1 is characterized in that, the globoidal structure of described guard for outwards arching upward, and between the sounding face of described bass horn the space is arranged.
3. double horn earphone as claimed in claim 1 or 2 is characterized in that, described guard is steel mesh, and the diameter of every steel mesh silk is more than 0.8mm.
4. double horn earphone as claimed in claim 1 is characterized in that, the arm of angle length of the chamfering of the structural edge of described high and low sound loudspeaker is more than 1.5mm.
5. double horn earphone as claimed in claim 1, it is characterized in that, described auricular concha is used for consisting of the part of back cavity, the up and down zone that joins with described bass passive radiator is equipped with all presses paraphase hole or all presses phase-reversing tube, described all to press paraphase hole or all press the edge of phase-reversing tube be smooth curved surface, and the arm of angle length of the chamfering at described edge is more than 1.5mm.
6. double horn earphone as claimed in claim 1 is characterized in that, also is provided with the curved surface sound absorber around the described bass horn, and the curved surface of described curved surface sound absorber extends on the described auricular concha from the side front end of bass horn.
7. double horn earphone as claimed in claim 1 is characterized in that, the cone-shaped diffuser at the described bass horn back side is two structures that the facies basialis pyramidis docking forms.
8. double horn earphone as claimed in claim 1 is characterized in that, the cavity wall of the described independent operatic tunes is smooth curved surface.
9. double horn earphone as claimed in claim 1 is characterized in that, the sidewall of described ante-chamber is provided with the curved surface sound-conducting body, and the curved surface of described curved surface sound-conducting body is from extending to the front end of described ante-chamber with described bass passive radiator joint.
10. double horn earphone as claimed in claim 1 is characterized in that, described bass passive radiator is plate cone, and the edge is provided with ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310257305.6A CN103313162B (en) | 2013-06-26 | 2013-06-26 | A kind of Dual-speaker headphone |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310257305.6A CN103313162B (en) | 2013-06-26 | 2013-06-26 | A kind of Dual-speaker headphone |
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| Publication Number | Publication Date |
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| CN103313162A true CN103313162A (en) | 2013-09-18 |
| CN103313162B CN103313162B (en) | 2016-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310257305.6A Active CN103313162B (en) | 2013-06-26 | 2013-06-26 | A kind of Dual-speaker headphone |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104811848A (en) * | 2014-12-23 | 2015-07-29 | 北京太和开元科技有限公司 | Sound production device |
| CN108566604A (en) * | 2018-06-04 | 2018-09-21 | 歌尔股份有限公司 | A kind of sound-producing device module and electronic equipment |
| CN108632698A (en) * | 2017-03-17 | 2018-10-09 | 宁波升亚电子有限公司 | Loudspeaker arrangement and the headphone with loudspeaker arrangement and its vocal technique |
| CN110049390A (en) * | 2019-04-24 | 2019-07-23 | 广州杰士莱电子有限公司 | A kind of hanging speaker |
| TWI683581B (en) * | 2018-11-29 | 2020-01-21 | 艾維克科技股份有限公司 | Headphone structure capable of extending and improving resonance |
| CN114125661A (en) * | 2017-03-30 | 2022-03-01 | 奇跃公司 | Sound reproduction system and head-mounted device |
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| CN203289620U (en) * | 2013-06-26 | 2013-11-13 | 青岛歌尔声学科技有限公司 | Double-speaker earphone |
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| DE202004004889U1 (en) * | 2004-03-29 | 2004-05-27 | Han, David | Earpiece for headphone or ear protection, whose structure contains integral, injection moulded loudspeaker support plate for rapid fitting of batteries and loudspeaker, with ear piece |
| CN200959661Y (en) * | 2005-12-29 | 2007-10-10 | 颜怀伟 | Double-winding and coiling cocurrent moving-coiling loundspeaker and amplifying and controlling circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104811848A (en) * | 2014-12-23 | 2015-07-29 | 北京太和开元科技有限公司 | Sound production device |
| CN104811848B (en) * | 2014-12-23 | 2017-04-12 | 北京太和开元科技有限公司 | Sound production device |
| CN108632698A (en) * | 2017-03-17 | 2018-10-09 | 宁波升亚电子有限公司 | Loudspeaker arrangement and the headphone with loudspeaker arrangement and its vocal technique |
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| CN114125661A (en) * | 2017-03-30 | 2022-03-01 | 奇跃公司 | Sound reproduction system and head-mounted device |
| CN114125661B (en) * | 2017-03-30 | 2024-05-31 | 奇跃公司 | Sound reproduction system and head-mounted device |
| CN108566604A (en) * | 2018-06-04 | 2018-09-21 | 歌尔股份有限公司 | A kind of sound-producing device module and electronic equipment |
| CN108566604B (en) * | 2018-06-04 | 2020-12-08 | 歌尔股份有限公司 | Sound production device module and electronic equipment |
| TWI683581B (en) * | 2018-11-29 | 2020-01-21 | 艾維克科技股份有限公司 | Headphone structure capable of extending and improving resonance |
| CN110049390A (en) * | 2019-04-24 | 2019-07-23 | 广州杰士莱电子有限公司 | A kind of hanging speaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103313162B (en) | 2016-03-16 |
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