CN201312379Y - Dual voice coil ribbon loudspeaker with controllable frequency response and selectable impedance - Google Patents
Dual voice coil ribbon loudspeaker with controllable frequency response and selectable impedance Download PDFInfo
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- CN201312379Y CN201312379Y CNU2008201896469U CN200820189646U CN201312379Y CN 201312379 Y CN201312379 Y CN 201312379Y CN U2008201896469 U CNU2008201896469 U CN U2008201896469U CN 200820189646 U CN200820189646 U CN 200820189646U CN 201312379 Y CN201312379 Y CN 201312379Y
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- voice coil
- magnetic circuit
- coil loudspeaker
- loudspeaker voice
- magnetic
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Abstract
A dual voice coil ribbon loudspeaker with controllable frequency response and selectable impedance is characterized in that Nd-Fe-B magnetic strips 5 are arranged at equal intervals in a U-shaped concentrating flux plate 3 by means of alternate positive and negative polarization to form a rear magnetic circuit, sound-proof cotton is arranged among the magnetic strips, the rear magnetic circuit is installed in a limit slot of a rear casing 1 attached with sound-proof cotton 2, Nd-Fe-B magnetic strips 4 are arranged at equal intervals in a limit groove on the inner side of a panel 6 by means of alternate positive and negative polarization to form a front magnetic circuit, a mounting hole 9-2-1 of a voice coil and vibrating diaphragm integrated component 9 is sleeved on a panel mounting pole 6-1 of the panel 6 to form a whole which is then fastened to the rear casing assembled with the rear magnetic circuit by using a mounting screw 8 in such a manner that a voice diaphragm front bracket 9-1 is propped against the panel 6 and a voice diaphragm rear bracket terminal 9-2 is propped against the rear casing 1, and a voice diaphragm tension control device 10 is mounted between a voice diaphragm tension adjustment hole 9-8 of the voice coil and vibrating diaphragm integrated component 9 and the rear casing 1. The voice diaphragm tension control device 10 is adjusted to apply acting force to the voice diaphragm tension adjustment hole, thereby achieving the purpose of controlling frequency response characteristics.
Description
Affiliated technical field
The utility model relates to a kind of controlled frequency response, optional impedance double-tone circle aluminium band type loud speaker, the especially high pitch loudspeaker of broadband plane diaphragm.
Technical background
Present known aluminium band type loud speaker, form by magnetic circuit system, vibrational system, support system, because its vibrational system is the single-tone coil structures, therefore its output acoustic pressure and operating efficiency are lower, power is also very little, and impedance is single fixed value, causes the use underaction, particularly between voice coil loudspeaker voice coil vibrating diaphragm and the voice coil suspension when bonding the tension force of vibrating diaphragm be difficult to control, make that the frequency response of loud speaker exists uncontrollability and inconsistency in the batch process.
Summary of the invention
For overcoming many deficiencies of existing aluminium band type loud speaker, the utility model provides a kind of controlled frequency response, optional impedance double-tone circle aluminium band type loud speaker, this loud speaker by design on a vibrating diaphragm positive with two of reverse side voice coil loudspeaker voice coil fully independently, can not only increase power, improve the output acoustic pressure, improve efficient, simultaneously can also be with series connection, in parallel, the double-tone circle, various combination modes such as single-tone circle obtain the impedance value of different size, by on integrated voice coil loudspeaker voice coil vibrating diaphragm, having sound film tension adjustment hole and carrying out sound film tension adjustment, from controllability and the consistency that reaches frequency response with sound film tension-adjusting gear.
The technical scheme that its technical problem that solves the utility model adopts is: the neodymium iron boron magnetic stripe of back magnetic circuit is arranged in the U-shaped magnetic conductive board by one anti-one positive polarization mode, the neodymium iron boron magnetic stripe of preceding magnetic circuit is arranged in the stopper slot of panel inboard by one anti-one positive polarization mode, preceding magnetic circuit is put so that identical polar is relative with the magnetic pole of back magnetic circuit, integrated voice coil loudspeaker voice coil vibrating diaphragm, sound film fore-stock, sound film after-poppet, the cotton formation of Air Filter and damping voice coil loudspeaker voice coil vibrating diaphragm assembly, the sound film tension adjustment hole of integrated voice coil loudspeaker voice coil vibrating diaphragm and sound film tension-adjusting gear are formed sound film tension regulating system, panel, back cover constitutes installation system, back magnetic circuit is installed in the limited impression of back cover, voice coil loudspeaker voice coil vibrating diaphragm assembly and the nested installation of panel erection column, sound film tenslator is installed between sound film tension adjustment hole and the back cover, screw is installed is assembled into an integral body with whole parts are fastening
Magnetic circuit system can be selected back magnetic circuit type of drive, magnetic circuit adds back magnetic circuit type of drive before also can selecting, no matter be which kind of mode, the neodymium iron boron magnetic stripe is all pressed one anti-one positive polarization mode and is arranged, preceding magnetic circuit magnetic stripe is arranged in the stopper slot of panel inboard, back magnetic circuit magnetic stripe is arranged in the U-shaped magnetic conductive board, the magnetic stripe quantity of preceding magnetic circuit is not necessarily identical with back magnetic circuit quantity, but not can more than the back magnetic circuit magnetic stripe quantity and to be centrosymmetric, repel each other with back magnetic circuit magnetic pole in magnetic pole pendulum position, neodymium iron boron magnetic stripe in the back magnetic circuit can be an any amount, how integrated the more voice coil loudspeaker voice coil vibrating diaphragm of magnetic stripe area be big more, and efficient and output acoustic pressure are also high more.
The diaphragm materials of integrated voice coil loudspeaker voice coil vibrating diaphragm is two-sided aluminium foil pi sheet material, becomes lead to form two-sided voice coil loudspeaker voice coil two-sided etching aluminum foil with the printed wire mask-making technology.Sound film fore-stock, sound film after-poppet (general designation sound membrane support) are finished by the printed wire mask-making technology with copper-clad plate, have sound film tension adjustment hole on the above-mentioned sound membrane support, adjust the size of sound film tension force by the height of adjusting sound film tenslator, thereby reach the purpose of control frequency response characteristic, the sound membrane support also is used for supporting the input terminal of integrated voice coil loudspeaker voice coil vibrating diaphragm and controlled frequency response, optional impedance double-tone circle aluminium band type loud speaker except that above-mentioned effect.
Two-sided voice coil loudspeaker voice coil is two fully independently voice coil loudspeaker voice coils, the impedance of each voice coil loudspeaker voice coil is 4 ohm to 16 ohm, 4 input terminals that utilize copper-clad plate to form on after-poppet link to each other with 4 lead ends of two voice coil loudspeaker voice coils respectively, can utilize these 4 input terminals the impedance of two loud speakers to be carried out the impedance value that various combinations such as series, parallel, double-tone circle, single-tone circle obtain different size in the use.
The beneficial effects of the utility model are, the double-tone circle can improve power of loudspeaker, increase the output acoustic pressure simultaneously, on same loud speaker, more selectivity is arranged in the time of can selecting impedance can make user's deisgn product, sound film tenslator can make the frequency response of loud speaker have the controllability and the consistency of height, and simple package assembly has also reduced the production cost.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the profile of controlled frequency response, optional impedance double-tone circle aluminium band type loud speaker.
The profile of the integrated voice coil loudspeaker voice coil vibrating diaphragm of Fig. 2.
The rearview of the integrated voice coil loudspeaker voice coil vibrating diaphragm of Fig. 3.
Fig. 4 is a reverse side voice coil loudspeaker voice coil vibrating diaphragm schematic diagram.
Fig. 5 is a front voice coil loudspeaker voice coil vibrating diaphragm schematic diagram.
Fig. 6 is the panel schematic diagram of preceding magnetic circuit during with single magnetic stripe.
Fig. 7 is the panel schematic diagram of preceding magnetic circuit during with three magnetic stripes.
Among the figure, 1. back cover; 2. acoustical cotton; 3.U shape magnetic conductive board; 4. preceding magnetic circuit neodymium iron boron magnetic stripe 5. back magnetic circuit neodymium iron boron magnetic stripes; 6. panel; 6-1. panel erection column; 6-2. use installing hole; 6-3. two lattice louvers; 6-4. four lattice louvers; 8. installation screw; 9. integrated voice coil loudspeaker voice coil vibrating diaphragm assembly; 9-1. sound film fore-stock; 9-2. sound film after-poppet terminal; 9-2-1. installing hole; 9-2-2. front voice coil loudspeaker voice coil negative input end; 9-2-3. front voice coil loudspeaker voice coil positive input terminal; 9-2-4. reverse side voice coil loudspeaker voice coil negative input end; 9-2-5. reverse side voice coil loudspeaker voice coil positive input terminal; 9-3. Air Filter; 9-4. front voice coil loudspeaker voice coil; 9-4-1. the front voice coil loudspeaker voice coil is born lead end; 9-4-2. the positive lead end of front voice coil loudspeaker voice coil; 9-5. reverse side voice coil loudspeaker voice coil; 9-5-1. the reverse side voice coil loudspeaker voice coil is born lead end; 9-5-2. the positive lead end of reverse side voice coil loudspeaker voice coil; 9-6. vibrating diaphragm; 9-7. damping cotton; 9-8. sound film tension adjustment hole; 10. sound film tenslator; 10-1. tension spring; 10-2. tension force top board;
Embodiment is:
In Fig. 1, neodymium iron boron magnetic stripe 5 is arranged in equally spacedly with one positive one anti-polarization mode and constitutes the back magnetic circuit in the U-shaped magnetic conductive board 3, places acoustical cotton between the magnetic stripe, and back magnetic circuit is installed in the stopper slot of the back cover 1 that posts acoustical cotton 2.Magnetic circuit before neodymium iron boron magnetic stripe 4 is arranged in equally spacedly with one positive one anti-polarization mode and constitutes in the limited impression of panel 6 inboards, the installing hole 9-2-1 of integrated voice coil loudspeaker voice coil vibrating diaphragm assembly 9 tightens together itself and the back cover that assembles the back magnetic circuit with the nested installation of panel erection column 6-1 of panel 6 and with screw 8 is installed, sound film fore-stock 9-1 and panel 6 are close to, sound film after-poppet terminal 9-2 and back cover 1 are close to, sound film tenslator 10 is installed between the sound film tension adjustment hole 9-8 and back cover 1 of integrated voice coil loudspeaker voice coil vibrating diaphragm 9, the elastic force of tension spring 10-1 by adjusting sound film tenslator 10 changes the active force that tension force top board 10-2 imposes on sound film tension adjustment hole 9-8, thereby reaches the purpose of control frequency response characteristic.In the utility model, above-mentioned sound film tenslator is not limited to the organization plan of tension force top board and tension spring, and any mode that can be applied to the power on the sound film and sound film tension force is changed can both reach this effect.
Magnetic circuit system can be selected back magnetic circuit type of drive, both had only single magnetic circuit type of drive, magnetic circuit adds back magnetic circuit type of drive before also can selecting, no matter be which kind of mode, the neodymium iron boron magnetic stripe is all pressed one anti-one positive polarization mode and is arranged, and preceding magnetic circuit is put with polar repulsion with the magnetic stripe of back magnetic circuit, preceding magnetic circuit magnetic stripe 4 is arranged in the stopper slot of panel 6 inboards, back magnetic circuit magnetic stripe 5 is arranged in the U-shaped magnetic conductive board 3, the magnetic stripe quantity of preceding magnetic circuit is not necessarily identical with back magnetic circuit quantity, but can be more than the magnetic stripe number in the magnetic circuit of back, and present the center symmetric shape, neodymium iron boron magnetic stripe quantity in the back magnetic circuit can be individual arbitrarily, and how integrated the more voice coil loudspeaker voice coil vibrating diaphragm of magnetic stripe area be big more, and efficient and output acoustic pressure are also high more.
Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, among Fig. 7, the material of vibrating diaphragm 9-6 is two-sided aluminium foil pi sheet material, with the printed wire mask-making technology two-sided etching aluminum foil is become lead and forms front voice coil loudspeaker voice coil 9-4 and reverse side voice coil loudspeaker voice coil 9-5, sound film fore-stock 9-1, all have sound film tension adjustment hole 9-8 on the sound film after-poppet 9-2, above-mentioned sound membrane support passes through the moulding of printed wire mask-making technology with printed wire copper-clad plate commonly used, it is used for supporting integrated voice coil loudspeaker voice coil vibrating diaphragm 9-6, utilizes sound film fore-stock 9-1,4 input terminal 9-2-2 of Copper Foil etching on the sound film after-poppet 9-2,9-2-3,9-2-4 and 9-2-5.The face of the front voice coil loudspeaker voice coil 9-4 of sound film fore-stock 9-1 and vibrating diaphragm 9-6 is fitted, the face of the reverse side voice coil loudspeaker voice coil 9-5 of sound film after-poppet terminal and vibrating diaphragm 9-6 is fitted, make installing hole 9-2-1 all align in the applying, utilize sound film fore-stock 9-1, printed wire on the sound film after-poppet 9-2 is connected the negative lead end 9-4-1 of front voice coil loudspeaker voice coil with front voice coil loudspeaker voice coil negative input end 9-2-2, voice coil loudspeaker voice coil positive lead end 9-4-2 in front is connected with front voice coil loudspeaker voice coil positive input terminal 9-2-3, the negative lead end 9-5-1 of reverse side voice coil loudspeaker voice coil is connected with reverse side voice coil loudspeaker voice coil negative input end 9-2-4, the positive lead end 9-5-2 of reverse side voice coil loudspeaker voice coil is connected with reverse side voice coil loudspeaker voice coil positive input terminal 9-2-5.Bonding Air Filter 9-3 on the outside of the preceding sound membrane support 9-1 of above-mentioned integrated voice coil loudspeaker voice coil vibrating diaphragm, the cotton 9-7 of damping on folder between sound film after-poppet 9-2 and the vibrating diaphragm 9-6.
Front voice coil loudspeaker voice coil 9-4, reverse side voice coil loudspeaker voice coil 9-5 are separately fully independently, the impedance of each voice coil loudspeaker voice coil is 4 ohm to 16 ohm, can utilize two input 9-2-2,9-2-3 of front voice coil loudspeaker voice coil 9-4 correspondence, two input 9-2-4, the 9-2-5s corresponding with reverse side voice coil loudspeaker voice coil 9-5 to carry out various combinations such as series, parallel, double-tone circle, single-tone circle in the use and obtains the impedance value of different size.
Any curved-surface structure can be adopted in panel 6 fronts, design shape can be installed needs according to audio amplifier and decide, louver 6-3,9-4 can determine according to the magnetic stripe quantity of magnetic circuit, be to have only that back magnetic circuit or preceding magnetic circuit magnetic stripe number are 1, the playback window schematic diagram when the back magnetic circuit is 3 magnetic stripes among Fig. 6, the playback window has two row, the window line number is unrestricted, preceding magnetic circuit has 3 magnetic stripes, back magnetic circuit has the playback window of 3 magnetic stripes that four row are arranged, the window line number is unrestricted, by that analogy, magnetic stripe of every increase, then window increases by two row.
It should be noted: though above-mentioned describing embodiment of the present utility model with reference to the accompanying drawings in detail, the foregoing description is exemplary explanation rather than restriction the utility model.Be construed as, the utility model is not limited to those clear and definite embodiment, and those skilled in the art can design the embodiment of plurality of replaceable and not deviate from the scope of accessory claim.
Claims (7)
1, a kind of controlled frequency response, optional impedance double-tone circle aluminium band type loud speaker, by panel, the U-shaped magnetic conductive board, the magnetic circuit system that the neodymium iron boron magnetic stripe constitutes, integrated voice coil loudspeaker voice coil vibrating diaphragm, fore-stock, after-poppet, the voice coil loudspeaker voice coil vibrating diaphragm assembly that damping cotton and Air Filter constitute, panel, the controlled frequency response of the common composition of installation system that back cover constitutes and sound film tenslator, optional impedance double-tone circle aluminium band type loud speaker, it is characterized in that: preceding magnetic circuit magnetic stripe is installed in the panel upper limit position groove, back magnetic circuit is installed in the limited impression of back cover, voice coil loudspeaker voice coil vibrating diaphragm assembly and the nested installation of panel erection column, sound film tenslator is installed between sound film tension adjustment hole and the back cover, screw is installed is assembled into an integral body with whole parts are fastening.
2, controlled frequency response according to claim 1, optional impedance double-tone circle aluminium band type loud speaker, its feature is that also the diaphragm materials of integrated voice coil loudspeaker voice coil vibrating diaphragm is two-sided aluminium foil pi sheet material, become lead to form two-sided voice coil loudspeaker voice coil two-sided etching aluminum foil with the printed wire mask-making technology, above-mentioned integrated voice coil loudspeaker voice coil vibrating diaphragm is not limited to two-sided aluminium foil pi material, also be not limited to the printed wire mask-making technology and become lead to form two-sided voice coil loudspeaker voice coil two-sided etching aluminum foil, any two-sided electric conducting material (as: the two-sided brushing electric conducting material of PVC etc.) that can form integrated voice coil loudspeaker voice coil vibrating diaphragm, any energy can form the mode (as: laser engraving of voice coil loudspeaker voice coil structure, silk-screen conducting resinl or the like) can both reach this effect.
3, according to claim 1, the described controlled frequency response of claim 2, optional impedance double-tone circle aluminium band type loud speaker, its feature also is fore-stock, the after-poppet band sound film tension adjustment hole of integrated voice coil loudspeaker voice coil vibrating diaphragm, material is the copper-clad plate that is usually used in doing printed wire, technology is to finish by printed wire plate-making etch process, when it is used for supporting integrated voice coil loudspeaker voice coil vibrating diaphragm, also take into account the input terminal of controlled frequency response, optional impedance double-tone circle aluminium band type loud speaker.
4, according to claim 1,2,3 described controlled frequency responses, optional impedance double-tone circle aluminium band type loud speaker, its feature is that also two-sided voice coil loudspeaker voice coil is two fully independently voice coil loudspeaker voice coils, the impedance of each voice coil loudspeaker voice coil is 4 ohm to 16 ohm, 4 input terminals that utilize copper-clad plate to form on after-poppet link to each other with 4 lead ends of two voice coil loudspeaker voice coils, can utilize these 4 input terminals the impedance of two loud speakers to be carried out various combinations such as series, parallel, double-tone circle, single-tone circle in the use and obtain the impedance value of different size.
5, according to claim 1,2,3,4 described controlled frequency responses, optional impedance double-tone circle aluminium band type loud speaker, its feature is that also integrated voice coil loudspeaker voice coil vibrating diaphragm is a kind of assembly of toneable film tension force, have sound film tension adjustment hole on it, sound film tenslator is made up of top board and spring, the elastic force of the tension spring by adjusting sound film tenslator is adjusted the size of sound film tension force, thereby reach the purpose of control frequency response characteristic, above-mentioned sound film tenslator is not limited to the organization plan of tension force top board and tension spring, and any mode that can be applied to the power on the sound film and sound film tension force is changed can both reach this effect.
6, according to claim 1,2,3,4,5 described controlled frequency responses, optional impedance double-tone circle aluminium band type loud speaker, its feature is that also magnetic circuit system can select back magnetic circuit type of drive, magnetic circuit adds back magnetic circuit type of drive before also can selecting, no matter be which kind of mode, the neodymium iron boron magnetic stripe is all pressed one anti-one positive polarization mode and is arranged, and preceding magnetic circuit is put with the polarity of repelling each other with the magnetic pole of back magnetic circuit magnetic stripe, preceding magnetic circuit magnetic stripe is arranged in the stopper slot of panel inboard, back magnetic circuit magnetic stripe is arranged in the U-shaped magnetic conductive board, the magnetic stripe quantity of preceding magnetic circuit is not necessarily identical with back magnetic circuit quantity, but not can more than the back magnetic circuit magnetic stripe quantity and to hold the center symmetry, neodymium iron boron magnetic stripe quantity in the back magnetic circuit can be any amount, how integrated the more voice coil loudspeaker voice coil vibrating diaphragm of magnetic stripe area be big more, and efficient and output acoustic pressure are also high more.
7, according to claim 1,2,3,4,5,6 described controlled frequency responses, optional impedance double-tone circle aluminium band type loud speaker, its feature is that also panel front can adopt any curved-surface structure, design shape can be installed needs according to audio amplifier and decide, louver can be determined according to the magnetic stripe quantity of magnetic circuit, having only back magnetic circuit or preceding magnetic circuit magnetic stripe number is 1 magnetic stripe, when back magnetic circuit is 3 magnetic stripes, the playback window has two row, the window line number is unrestricted, preceding magnetic circuit has 3 magnetic stripes, back magnetic circuit has the playback window of 3 magnetic stripes that four row are arranged, and the window line number is unrestricted, by that analogy, magnetic stripe of every increase, then window increases by two row.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201896469U CN201312379Y (en) | 2008-12-23 | 2008-12-23 | Dual voice coil ribbon loudspeaker with controllable frequency response and selectable impedance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201896469U CN201312379Y (en) | 2008-12-23 | 2008-12-23 | Dual voice coil ribbon loudspeaker with controllable frequency response and selectable impedance |
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| CN201312379Y true CN201312379Y (en) | 2009-09-16 |
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| CNU2008201896469U Expired - Lifetime CN201312379Y (en) | 2008-12-23 | 2008-12-23 | Dual voice coil ribbon loudspeaker with controllable frequency response and selectable impedance |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103957496A (en) * | 2014-05-20 | 2014-07-30 | 上海华勤通讯技术有限公司 | Loudspeaker assembly with back sound reduction function |
| WO2016197412A1 (en) * | 2015-06-12 | 2016-12-15 | 苏州佑克骨传导科技有限公司 | High-power transducer suitable for use in bone-conduction earphones |
| CN107360511A (en) * | 2017-07-03 | 2017-11-17 | 深圳市吉瑞德隆电子科技有限公司 | Curved surface vibrating diaphragm loudspeaker and sound-producing device |
| CN107871408A (en) * | 2017-12-21 | 2018-04-03 | 冯雯雯 | A kind of intelligent apparatus for English teaching |
| CN109391882A (en) * | 2018-01-10 | 2019-02-26 | 深圳市吉瑞德电子科技有限公司 | Rotating coil plan vibrating diaphragm loudspeaker |
| CN109391881A (en) * | 2017-11-30 | 2019-02-26 | 深圳市吉瑞德隆电子科技有限公司 | Plane diaphragm loudspeaker |
| CN110035375A (en) * | 2019-03-13 | 2019-07-19 | 东莞涌韵音膜有限公司 | Using the method for non-polyimides preparation ribbon-type high-pitch vibrating diaphragm |
| US10701477B2 (en) | 2018-03-27 | 2020-06-30 | Sony Corporation | Loudspeaker, acoustic waveguide, and method |
| US11012788B2 (en) | 2018-03-27 | 2021-05-18 | Sony Corporation | Loudspeaker system |
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2008
- 2008-12-23 CN CNU2008201896469U patent/CN201312379Y/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103957496A (en) * | 2014-05-20 | 2014-07-30 | 上海华勤通讯技术有限公司 | Loudspeaker assembly with back sound reduction function |
| WO2016197412A1 (en) * | 2015-06-12 | 2016-12-15 | 苏州佑克骨传导科技有限公司 | High-power transducer suitable for use in bone-conduction earphones |
| CN107360511A (en) * | 2017-07-03 | 2017-11-17 | 深圳市吉瑞德隆电子科技有限公司 | Curved surface vibrating diaphragm loudspeaker and sound-producing device |
| CN109391881A (en) * | 2017-11-30 | 2019-02-26 | 深圳市吉瑞德隆电子科技有限公司 | Plane diaphragm loudspeaker |
| CN109391881B (en) * | 2017-11-30 | 2024-01-19 | 深圳市吉瑞德隆电子科技有限公司 | Plane vibrating diaphragm loudspeaker |
| CN107871408A (en) * | 2017-12-21 | 2018-04-03 | 冯雯雯 | A kind of intelligent apparatus for English teaching |
| CN107871408B (en) * | 2017-12-21 | 2020-11-20 | 冯雯雯 | A intelligent device for english teaching |
| CN109391882A (en) * | 2018-01-10 | 2019-02-26 | 深圳市吉瑞德电子科技有限公司 | Rotating coil plan vibrating diaphragm loudspeaker |
| US10701477B2 (en) | 2018-03-27 | 2020-06-30 | Sony Corporation | Loudspeaker, acoustic waveguide, and method |
| US11012788B2 (en) | 2018-03-27 | 2021-05-18 | Sony Corporation | Loudspeaker system |
| CN110035375A (en) * | 2019-03-13 | 2019-07-19 | 东莞涌韵音膜有限公司 | Using the method for non-polyimides preparation ribbon-type high-pitch vibrating diaphragm |
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