CN109327761B - Synthetic wave low-frequency supercharger and sound equipment and low-frequency supercharging method thereof - Google Patents
Synthetic wave low-frequency supercharger and sound equipment and low-frequency supercharging method thereof Download PDFInfo
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- CN109327761B CN109327761B CN201811352748.2A CN201811352748A CN109327761B CN 109327761 B CN109327761 B CN 109327761B CN 201811352748 A CN201811352748 A CN 201811352748A CN 109327761 B CN109327761 B CN 109327761B
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000002131 composite material Substances 0.000 claims description 9
- 230000000694 effects Effects 0.000 abstract description 6
- 238000007789 sealing Methods 0.000 abstract description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
Classifications
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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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
- Exhaust Silencers (AREA)
Abstract
The invention discloses a synthetic wave low-frequency supercharger and a sound and low-frequency increasing method thereof, wherein the supercharger comprises the following components: assembling a bracket and sealing the reflector; the assembly bracket comprises at least one plane side plate, wherein the plane side plate is provided with a mounting hole, and the mounting hole is provided with a radiator; the airtight reflector comprises at least one reflecting part capable of being hermetically covered on the plane side plate, a plane plate part parallel and opposite to the plane side plate is arranged on the reflecting part, a low-frequency pressurizing cavity is formed by the plane plate part and the plane side plate together, and a sound outlet hole is formed in one side of the plane plate part and one side of the plane side plate. Compared with the prior art, the loudspeaker effectively solves the problems that the small-caliber loudspeaker body has small vibrating diaphragm area, low frequency quantity sense is seriously lack, and middle and high frequencies are too much, so that the sound field has high, middle and low frequency overall balance effect when the sound is played, and the hearing requirement is better met.
Description
Technical Field
The invention relates to the technical field of sound equipment, in particular to a low-frequency supercharger capable of synthesizing waves and sound equipment thereof.
Background
The existing methods for amplifying the low-frequency part of the sound include the following methods:
1. A low power low voltage is used to boost the 3.7V operating voltage of the battery on the circuit in exchange for higher power. The disadvantage is that according to the voltage rise and the power increase, the battery capacity is required to rise, resulting in a great increase in the battery cost; the boosted circuit only increases the overall sound pressure, and the substantial effect of low frequency is not improved; on the day, the state of America has a chip for processing low-frequency promotion, and the price is higher, but only 30-40% of low-frequency promotion can be performed.
2. The small-caliber horn unit is adopted: the low-frequency sound wave has the wavelength of 2-17.15 m (the wavelength of 150HZ is 2.2 m, and the wavelength of 20HZ/17.15 m) horn has low working frequency, so that the cone area of the horn and the stroke travel of the horn can be increased to obtain enough low-frequency sensing, and the actual area of the small-caliber horn has limited the low-frequency sound pressure.
Miniaturization of small volume (0.009 square meters) products also limits the structural design of the product. If the design of the traditional phase guide tube for pressurizing the low frequency is adopted. The diameter of the guide tube needs to be reduced to 1/15 area of the horn cone, the length of the guide tube needs to be prolonged to enhance sound pressure when the diameter of the guide tube is reduced, for example, the length of the guide tube needs to be 1/4 of the wavelength of sound waves when the sound pressure of 84HZ is increased to be more than one time, and the length of the guide tube needs to be more than 1 meter. (wavelength of 84HZ 8.04 meters) does not completely meet the small volume requirements of the audio product. The guide pipe is of an opening design, and the anti-phase full-frequency-band mixed sound waves of the loudspeaker are all guided out in the loudspeaker box (for example, the working frequency band of the loudspeaker is 20HZ-20 KHZ), so that the sound waves below 200HZ cannot be effectively improved.
Disclosure of Invention
The invention aims to provide a synthetic wave low-frequency supercharger, a sound box and a low-frequency increasing method thereof, which aim to provide a method for realizing low-frequency enhancement on small-volume sound box and controlling lower manufacturing cost.
In order to achieve the above purpose, the technical scheme provided by the invention is as follows:
The invention provides a synthetic wave low-frequency supercharger, which comprises the following components: assembling a bracket and sealing the reflector; the assembly bracket comprises at least one plane side plate, wherein the plane side plate is provided with a mounting hole, and the mounting hole is provided with a radiator; the airtight reflector comprises at least one reflecting part capable of being hermetically covered on the plane side plate, a plane plate part parallel and opposite to the plane side plate is arranged on the reflecting part, a low-frequency pressurizing cavity is formed by the plane plate part and the plane side plate together, and a sound outlet hole is formed in one side of the plane plate part and one side of the plane side plate.
The number of the plane side plates on the assembly support is two, the plane side plates are mutually parallel and are distributed in a positive opposite mode, and radiators on the plane side plates are distributed in a mirror image mode.
Wherein, the assembly support include: the bracket comprises a bracket body, wherein the bracket body is provided with a plane side plate, a connecting plate is further arranged on one side surface, which is mutually adjacent to the plane side plate, and a horn mouth is arranged on the connecting plate.
The assembly support is provided with a plurality of connecting columns, and connecting holes corresponding to the connecting columns are formed in the connecting plates, so that the connecting plates are detachably connected to the assembly support.
Wherein, airtight reflector includes: the connecting bottom plate and the reflecting parts upwards extend from two side edges of the connecting bottom plate.
Wherein the reflecting part further comprises: the front side plate, the rear side plate and the upper side plate are bent from the edges of the plane plate parts, the front side plate, the rear side plate, the upper side plate and the plane side plate on the assembly bracket jointly form the low-frequency pressurizing cavity, and the sound outlet hole is positioned on the connecting bottom plate.
An acoustic device comprising a composite wave low frequency booster as claimed in any one of the preceding claims.
The low-frequency supercharging method adopting the synthetic wave low-frequency supercharger according to any one of the above steps, which comprises the step of playing the low-frequency part of the audio sent out by the horn mouth through the sound outlet after the low-frequency part is subjected to multiple reflection supercharging by the synthetic wave low-frequency supercharger.
Wherein the low frequency part is audio frequency of 20Hz-200 Hz.
Compared with the prior art, the synthetic wave low-frequency supercharger and the sound and low-frequency supercharging method thereof can selectively filter sound waves which are not increased above 200HZ of the sound box, generate resonance in a specific space to form synthetic waves at the sound wave frequency (20 HZ-200 HZ) which is required to be increased in intensity, and further combine the air column principle to prolong the resonance times to obtain low-frequency sound pressure of more than 10 times. The loudspeaker effectively solves the problems that the small-caliber loudspeaker body has small vibrating diaphragm area, seriously lacks low-frequency quantity sense and has excessive middle and high frequencies, so that the sound field has high, middle and low frequency overall balance effect when playing music, and better meets the hearing requirement.
Drawings
Fig. 1 and 2 are exploded views of a synthetic wave low frequency supercharger according to the present invention.
Fig. 3 to 5 are schematic views of the structure of a closed reflector part of the composite wave low frequency supercharger of the present invention.
Fig. 6 is a schematic view of a part of the structure of an assembly bracket of the composite wave low frequency supercharger of the present invention.
Fig. 7 is a schematic view of a connection plate portion of the composite wave low frequency supercharger of the present invention.
Detailed Description
The invention is further elaborated with reference to the drawings.
Referring to fig. 1 to 7, in the present embodiment, the composite wave low frequency booster includes at least: the assembly bracket 1 is used for connecting and mounting the airtight reflector 3, a sound box and the like; the assembly bracket 1 comprises at least one plane side plate 111, wherein a mounting hole 1111 is formed in the plane side plate, and a radiator 2 is arranged in the mounting hole 1111; the airtight reflector 3 includes at least one reflecting portion 32 capable of being hermetically covered on the planar side plate 111, a planar plate portion 321 parallel to and opposite to the planar side plate 111 is disposed on the reflecting portion 32, the planar plate portion 321 and the planar side plate 111 together form a low-frequency pressurizing cavity, and an acoustic hole 311 is further disposed on one side of the planar plate portion 321 and one side of the planar side plate 111. When the composite wave low frequency booster includes only one set of low frequency boost cavities consisting of the planar side plate 111, the radiator 2, and the reflecting portion 32, it corresponds to a mono low frequency booster.
In this embodiment, the synthesized wave low frequency booster includes two channels, i.e. a left channel and a right channel, at this time, as shown in fig. 6, the number of planar side plates 111 on the assembly bracket 1 is two, which are respectively planar side plates 111 and 112, the planar side plates 111 and 112 are mutually parallel and oppositely distributed, the radiators 21 and 22 on the planar side plates 111 and 112 are mirror image distribution, and the other planar side plate 112 is also provided with a mounting hole 1121, on which another radiator 22 is arranged, i.e. symmetrical distribution of the left channel and the right channel is ensured.
More specifically, the mounting bracket 1 includes: the bracket body 11 is provided with the plane side plates 111 and 112, wherein a connecting plate 12 is further arranged on one side surface adjacent to the plane side plates 111 and 112, and a horn mouth 121 is arranged on the connecting plate 12. Also connected to the planar side panels 111,112 and the connecting panel 12 is an upper top surface 113, a lower bottom surface 114 and a rear surface; the connecting plate 12 and the bracket body 11 together form a horn chamber.
Wherein, the assembly branch 1 is provided with a plurality of connecting posts 115, and the connecting plate 12 is provided with connecting holes 122 corresponding to the connecting posts 115, so that the connecting plate 12 is detachably connected to the assembly bracket 1.
Referring again to fig. 3 to 5, the airtight reflector 3 includes: the connecting bottom plate 31, and the reflecting parts 32 and 33 extending upwards from the two sides of the connecting bottom plate 31, wherein the reflecting parts 32 and 33 are mirror images and have the same structure.
Further, taking the reflecting portion 32 as an example, the reflecting portion 32 further includes: the front side plate, the rear side plate 322 and the upper side plate 323 are formed by bending the edges of the planar plate 321, the front side plate, the rear side plate 322, the upper side plate 323 and the planar side plate 111 on the assembly bracket 1 together form the low-frequency pressurizing cavity, and the sound outlet hole 311 is formed in the connecting bottom plate 31.
The embodiment also discloses a sound device, which comprises the synthetic wave low-frequency booster according to any one of the above. The horn mouth of the sound equipment is in butt joint with the horn mouth 121 on the connecting plate 12, the sound equipment is the conventional small sound equipment, and the synthesized wave low-frequency booster is additionally arranged at the horn mouth to carry out low-frequency enhancement on the audio frequency so as to enhance the hearing effect.
The embodiment also discloses a low-frequency pressurizing method adopting the synthetic wave low-frequency pressurizing device, which comprises the step of playing the low-frequency part of the audio frequency sent out by the horn mouth through the synthetic wave low-frequency pressurizing device after being reflected and pressurized for many times by the sound outlet hole.
Wherein the low frequency part is audio frequency of 20Hz-200 Hz.
The working principle of the low-frequency supercharging method is as follows:
1. And filtering out sound waves with the frequency of more than 200HZ by using a bass passive film with the area being 2.5 times larger than that of the horn unit, and generating 20HZ-200HZ opposite-phase low-frequency propulsion waves with the frequency being twice larger than that of the horn unit. (the hardness of the rubber folding ring of the bass passive film and the thickness of the vibrating film can be adjusted to reduce the response of the medium and high frequency sound waves and thus the filtering effect is achieved)
2. A closed square conduit (i.e. low-frequency pressurizing cavity) is arranged outside the bass passive film, and an independent standing wave resonance space is manufactured, which is a first resonance chamber, and the area of the space is equal to that of the bass passive film. The front surface of the bass passive film is a plane reflecting plate, and the plane of the reflecting plate can reflect sound waves with the same frequency and the same wavelength, reduce the interference of the sound waves derived from other wavelengths, comprehensively reflect the incident wave generated by the bass passive film into a reflected wave, and form a composite wave by the two sound waves with opposite propagation directions. When the distance between the incident surface and the reflecting surface is equal, the composite wave has the same amplitude as the incident wave and the sound pressure twice the same frequency.
3. By utilizing the principle of air column sound wave multiple resonance, the catheter is prolonged on the basis of the first resonance chamber to form a longer resonance chamber, and the strongest antinode generated by multiple resonance is guided to the opening of the catheter to be released. Sound pressure of a multiple or more of the same frequency as the first resonance chamber is obtained.
Compared with the prior art, the synthetic wave low-frequency supercharger and the sound and low-frequency supercharging method thereof can selectively filter sound waves which are not increased above 200HZ of the sound box, generate resonance in a specific space to form synthetic waves at the sound wave frequency (20 HZ-200 HZ) which is required to be increased in intensity, and further combine the air column principle to prolong the resonance times to obtain low-frequency sound pressure of more than 10 times. The loudspeaker effectively solves the problems that the small-caliber loudspeaker body has small vibrating diaphragm area, seriously lacks low-frequency quantity sense and has excessive middle and high frequencies, so that the sound field has high, middle and low frequency overall balance effect when playing music, and better meets the hearing requirement.
The foregoing is merely illustrative of the preferred embodiments of the present invention and is not intended to limit the embodiments of the present invention, and those skilled in the art can easily make corresponding variations or modifications according to the main concept and spirit of the present invention, so the protection scope of the present invention shall be defined by the claims.
Claims (5)
1. The synthetic wave low-frequency supercharger is characterized by comprising an assembly bracket and a closed reflector; the assembly bracket comprises at least one plane side plate, wherein the plane side plate is provided with a mounting hole, and the mounting hole is provided with a radiator; the sealed reflector comprises at least one reflecting part which can be hermetically covered on the plane side plate, a plane plate part which is parallel and opposite to the plane side plate is arranged on the reflecting part, a low-frequency pressurizing cavity is formed by the plane plate part and the plane side plate together, sound outlet holes are formed in one side of the plane plate part, the number of the plane side plates on the assembly support is two, the two plane side plates are parallel and are distributed in a positive and opposite mode, radiators on the plane side plates are in mirror image distribution, the assembly support comprises a support body, the support body is provided with the plane side plates, a connecting plate is arranged on one side surface which is adjacent to the plane side plates together, a horn mouth is formed in the connecting plate, the reflecting part extends upwards from two side edges of the connecting plate, the reflecting part comprises a front side plate, a rear side plate and an upper side plate, the front side plate, the rear side plate, the upper side plate and the plane side plate on the assembly support form the low-frequency pressurizing cavity together, and the sound outlet holes are positioned on the connecting plate.
2. The composite wave low frequency supercharger of claim 1 wherein the mounting bracket is provided with a plurality of connecting posts, and the connecting plate is provided with connecting holes corresponding to the connecting posts, so that the connecting plate is detachably connected to the mounting bracket.
3. An acoustic apparatus comprising the synthetic wave low frequency supercharger according to any one of claims 1 to 2.
4. A low-frequency supercharging method using the synthetic wave low-frequency supercharger according to any one of claims 1 to 2, characterized by comprising the step of playing the low-frequency part of the audio emitted from the horn through the sound outlet after being subjected to multiple reflection supercharging by the synthetic wave low-frequency supercharger.
5. The low frequency boosting method according to claim 4, wherein the low frequency portion is audio of 20Hz to 200 Hz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811352748.2A CN109327761B (en) | 2018-11-14 | 2018-11-14 | Synthetic wave low-frequency supercharger and sound equipment and low-frequency supercharging method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811352748.2A CN109327761B (en) | 2018-11-14 | 2018-11-14 | Synthetic wave low-frequency supercharger and sound equipment and low-frequency supercharging method thereof |
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| Publication Number | Publication Date |
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| CN109327761A CN109327761A (en) | 2019-02-12 |
| CN109327761B true CN109327761B (en) | 2024-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811352748.2A Active CN109327761B (en) | 2018-11-14 | 2018-11-14 | Synthetic wave low-frequency supercharger and sound equipment and low-frequency supercharging method thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013162203A (en) * | 2012-02-02 | 2013-08-19 | Kazuo Ide | Double bass reflex type speaker system |
| CN209120441U (en) * | 2018-11-14 | 2019-07-16 | 缪东雷 | A kind of composite wave low frequency booster and its sound equipment |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7252176B2 (en) * | 2005-04-16 | 2007-08-07 | Moore Dana A | Reflex-ported folded horn enclosure |
| US9154863B2 (en) * | 2012-12-26 | 2015-10-06 | John Smith | Speaker enclosure and method for eliminating standing waves therein |
| CN206136250U (en) * | 2016-11-09 | 2017-04-26 | 深圳东原电子有限公司 | Two -sided extrusion formula radiates bar audio amplifier passively |
| CN207884853U (en) * | 2018-03-19 | 2018-09-18 | 深圳市博来美电子有限公司 | A kind of high-fidelity music center |
-
2018
- 2018-11-14 CN CN201811352748.2A patent/CN109327761B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013162203A (en) * | 2012-02-02 | 2013-08-19 | Kazuo Ide | Double bass reflex type speaker system |
| CN209120441U (en) * | 2018-11-14 | 2019-07-16 | 缪东雷 | A kind of composite wave low frequency booster and its sound equipment |
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| CN109327761A (en) | 2019-02-12 |
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Effective date of registration: 20240828 Address after: 518100 Huangma Bu Community, Hangcheng Street, Bao'an District, Shenzhen City, Guangdong Province, China. Building 6, 4th Floor A1 and 6th Floor A1, Tongfufu Industrial Zone, Guizhujiao Patentee after: SHENZHEN SHENGYUN ACOUSTICS CO.,LTD. Country or region after: China Address before: E2, Building 6, Xiangmi New Village, Futian District, Shenzhen City, Guangdong Province 518000 Patentee before: Miao Donglei Country or region before: China |
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