CN204697271U - A kind of audio amplifier that can suppress standing wave - Google Patents
A kind of audio amplifier that can suppress standing wave Download PDFInfo
- Publication number
- CN204697271U CN204697271U CN201520382755.2U CN201520382755U CN204697271U CN 204697271 U CN204697271 U CN 204697271U CN 201520382755 U CN201520382755 U CN 201520382755U CN 204697271 U CN204697271 U CN 204697271U
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- China
- Prior art keywords
- standing wave
- audio amplifier
- screen cloth
- sound source
- inwall
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Abstract
The utility model discloses a kind of audio amplifier that can suppress standing wave, the sound source in described audio amplifier and between inwall produce standing wave Nodes screen cloth is set, this screen cloth separates by described sound source and with the inwall that this sound source produces standing wave.The utility model innovatively will produce in the node of standing wave in screen cloth application and audio amplifier, as used to the damping of standing wave, its damping produced is obvious, and better than the effect of the sound absorbers such as the general acoustical cotton used, and can bring better effects,sound for audio amplifier.
Description
Technical field
The utility model relates to technology for loudspeaker box field, particularly a kind of audio amplifier that can suppress standing wave.
Background technology
Standing wave, as its name suggests, it is the fixing fluctuation that can not advance forward, the sound wave that casing inside trumpet sends is after the reflection of boxboard, converge in the middle part of casing, the sound wave reflected by planes of symmetry such as upper and lower, left and right respectively superposes mutually generation, and the acoustic phase reflected due to relative boxboard is contrary, synthesize one piece be exactly as picture such be together in series with ellipse one by one waveform.
For general manufacturer, be all use silencing cotton weaken or eliminate the standing wave in audio amplifier.But the Q value that also can export the sound of audio amplifier, produces certain impact to auditory effect simultaneously.
Current screen cloth, in the field of audio amplifier, is mainly used in dust-proof, is placed on Microspeaker support unit rear as suspension system damping, is attached to wind (leading note) tube opening and reduces wind noise.
Utility model content
The technical problems to be solved in the utility model is for above-mentioned the deficiencies in the prior art, provides a kind of audio amplifier that can suppress standing wave.
For solving the problems of the technologies described above, technical solution adopted in the utility model is: a kind of audio amplifier that can suppress standing wave, sound source in described audio amplifier and between inwall produce standing wave Nodes screen cloth is set, this screen cloth separates by described sound source and with the inwall that this sound source produces standing wave.
In technique scheme, in described audio amplifier, between described sound source and inwall, be provided with the retainer ring of fixing described screen cloth.
In technique scheme, the left and right sides opening of described retainer ring is also communicated with, and these both sides are respectively towards described sound source and inwall, and screen cloth described in two is individually fixed on the both sides of described retainer ring.
In technique scheme, described screen cloth is pasted onto the both sides of described retainer ring.
The beneficial effects of the utility model are: the application of screen cloth in audio amplifier is generally as dustproof effect, but the utility model innovatively will produce in the node of standing wave in screen cloth application and audio amplifier, as used to the damping of standing wave, its damping produced is obvious, and better than the effect of the sound absorbers such as the general acoustical cotton used, better effects,sound can be brought for audio amplifier.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model;
Fig. 2 is the specific embodiment structural representation of retainer ring of the present utility model and fixed block;
In figure, 1, audio amplifier; 2, sound source; 3, inwall; 4, screen cloth; 5, retainer ring; 6, fixed block.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, a kind of audio amplifier 1 that can suppress standing wave, the sound source 2 in described audio amplifier 1 and between inwall 3 produce standing wave Nodes screen cloth 4 is set, this screen cloth 4 separates by described sound source 2 and with the inwall 3 that this sound source 2 produces standing wave.According to the condition that standing wave produces, this inwall 3 must be parallel with this sound source 2 place planar wall, can make to produce standing wave between this sound source 2 and inwall 3.The relation formula of standing wave, distance between sound source 2 and inwall 3 is: f=(c/2) * (n/L); Wherein, c is the speed of sound, and L is the distance that sound source 2 is sitting between planar wall and inwall 3, and n is integer 1,2,3 ... n.The standing wave that frequency is minimum can occur in when wavelength equals the metope distance of twice, and the distance of two walls equals the wavelength of half in other words.In addition, when the reflected wave arrived at and source sound wave same-phase at every turn, the standing wave of upper frequency will be produced, this phenomenon can occur in when the distance of metope equals the integral multiple of 1/2nd wavelength, under the condition of one dimension, we can utilize top formulae discovery to go out the frequency of standing wave generation, thus determine the node of standing wave.
Screen cloth 4, in the field of audio amplifier 1, is mainly used in dust-proof, is placed on Microspeaker support unit rear as suspension system damping, is attached to wind (leading note) tube opening and reduces wind noise.By being arranged at test and the test of audio amplifier 1 standing internal wave Nodes to screen cloth 4, its effect is better than the sound absorber effect of acoustical cotton and so on, more smooth than sound absorber of the SPL curve of output.
As shown in Figure 2, in described audio amplifier 1, between described sound source 2 and inwall 3, be provided with the retainer ring 5 of fixing described screen cloth 4.This retainer ring 5 is designed to conveniently detachable structure, is provided with the fixed block 6 that some combination of two are arranged, can inserts by accommodating described retainer ring 5 between two fixed blocks 6 often in group in audio amplifier 1, with the fixing described position of retainer ring 5 in audio amplifier 1.
Wherein, the left and right sides opening of described retainer ring 5 is also communicated with, and these both sides are respectively towards described sound source 2 and inwall 3, and screen cloth 4 described in two is individually fixed on the both sides of described retainer ring 5.
Wherein, described screen cloth 4 can by glue or sticking double faced adhesive tape on the ring-shaped edge of the both sides of described retainer ring 5.
Above embodiment is just to illustrate instead of restriction the utility model, therefore all equivalences done according to the method described in the utility model patent claim change or modify, and are included in the utility model patent claim.
Claims (4)
1. can suppress an audio amplifier for standing wave, it is characterized in that: the sound source in described audio amplifier and between inwall produce standing wave Nodes screen cloth is set, this screen cloth separates by described sound source and with the inwall that this sound source produces standing wave.
2. a kind of audio amplifier that can suppress standing wave according to claim 1, is characterized in that: in described audio amplifier, is provided with the retainer ring of fixing described screen cloth between described sound source and inwall.
3. a kind of audio amplifier that can suppress standing wave according to claim 2, is characterized in that: the left and right sides opening of described retainer ring is also communicated with, and these both sides are respectively towards described sound source and inwall, and screen cloth described in two is individually fixed on the both sides of described retainer ring.
4. a kind of audio amplifier that can suppress standing wave according to claim 3, is characterized in that: described screen cloth is pasted onto the both sides of described retainer ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520382755.2U CN204697271U (en) | 2015-06-04 | 2015-06-04 | A kind of audio amplifier that can suppress standing wave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520382755.2U CN204697271U (en) | 2015-06-04 | 2015-06-04 | A kind of audio amplifier that can suppress standing wave |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204697271U true CN204697271U (en) | 2015-10-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520382755.2U Active CN204697271U (en) | 2015-06-04 | 2015-06-04 | A kind of audio amplifier that can suppress standing wave |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204697271U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107592598A (en) * | 2017-09-08 | 2018-01-16 | 广东欧珀移动通信有限公司 | Electroacoustic component, electroacoustic device and mobile terminal |
-
2015
- 2015-06-04 CN CN201520382755.2U patent/CN204697271U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107592598A (en) * | 2017-09-08 | 2018-01-16 | 广东欧珀移动通信有限公司 | Electroacoustic component, electroacoustic device and mobile terminal |
| CN107592598B (en) * | 2017-09-08 | 2020-07-07 | Oppo广东移动通信有限公司 | Electroacoustic component, electroacoustic device and mobile terminal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |