CN209419819U - A kind of sound system convenient for eliminating frequency response peak value - Google Patents
A kind of sound system convenient for eliminating frequency response peak value Download PDFInfo
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- CN209419819U CN209419819U CN201920223714.7U CN201920223714U CN209419819U CN 209419819 U CN209419819 U CN 209419819U CN 201920223714 U CN201920223714 U CN 201920223714U CN 209419819 U CN209419819 U CN 209419819U
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- frequency response
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Abstract
The utility model discloses a kind of sound systems convenient for eliminating frequency response peak value, comprising: the loudspeaker in loudspeaker enclosure body is arranged in loudspeaker box, and is arranged in that loudspeaker enclosure is external and the sound wave diffusing cone with loudspeaker face；The sound wave diffusing cone includes shell and the bottom case that outer casing bottom is arranged in；The shell and bottom case form a coupled chamber, and the shell is provided with several acoustic damping holes.Sound system provided by the utility model convenient for eliminating frequency response peak value, after the sound wave that loudspeaker generates passes through the acoustic damping hole on sound wave diffusing cone, it enters in coupled chamber, by adjusting shape, size, percent opening and the perforated area in the acoustic damping hole on sound wave diffusing cone, to adjust the sound property of sound system generation, peak value and the distortion of frequency response are eliminated, thus to improve frequency response, and there is no increase production cost.
Description
Technical field
The utility model relates to speaker technology field more particularly to a kind of sound equipments convenient for eliminating frequency response peak value
System.
Background technique
Speaker refers to a kind of equipment that audio signal can be transformed to sound.Popular saying just refers to main system of audio cabinet or low
Power amplifier is carried in sound receiver body, audio signal is amplified, sound is played back out by sound equipment itself after handling, make its sound
The change of tune is big.Speaker is the terminal of entire sound system, and effect is audio electric energy to be converted into corresponding sound energy, and it is radiated
It is gone to space.It is the extremely important component part of sound system, is responsible for the ear that electric signal is transformed into acoustical signal for people
Directly listening to for task.
Frequency response refer to by one with constant voltage output audio signal be connected with system when, speaker generation acoustic pressure
With the variation of frequency there is a phenomenon where increasing or decaying, phase change with frequency, this acoustic pressure and phase and frequency
Associated variation relation be known as frequency response.Also refer to the frequency that sound system can be reset in the range of amplitude allows
Range, and the variable quantity of signal is known as frequency response within this range, is also frequency characteristic.In specified frequency range,
The ratio between maxima and minima of output voltage amplitude indicates its unevenness with decibels (dB).Frequency response is in electric energy
The impedance of system or gage probe is typically referred in quality concept with the variation of frequency.The frequency response of system is by amplitude-frequency characteristic
It is formed with phase-frequency characteristic.Amplitude-frequency characteristic indicates that relationship of the increase and decrease with signal frequency of gain, phase-frequency characteristic indicate unlike signal frequency
Phase distortion relationship under rate.The intuitively ability of evaluation system reproduction signal can be compared according to frequency response and cross noise filtering
Characteristic.
Speaker in the prior art and other speaker products add sound wave diffusing cone to realize 360 degree using a Full-frequency trumpet
Sound field, but frequency response will appear the about peak 8dB in 1.5kHz-4kHz, lead to audio distortions, seriously affect sound reproduction and body
Test effect.The filter of DSP (Digital Signal Processing) is generally used to carry out the peak valley of processing frequency response to improve frequency response,
But its peak valley equally exists in big signal or maximum output, because using the peak valley of DSP filter forcibly changing frequency, together
Sample is easy to produce unnatural in distortion and sense of hearing.Further, it is also possible to pass down through a diffusing cone using a Full-frequency trumpet
Realize 360 degree of sound fields, sound wave diffusing cone is a smooth surface without any acoustic damping, not can avoid the production of frequency response peak valley
It is raw.
Therefore, the existing technology needs to be improved and developed.
Utility model content
The technical problem to be solved by the present invention is in view of the above drawbacks of the prior art, provide one kind and be convenient for
Eliminate frequency response peak value sound system, by adjusting the shape in the acoustic damping hole on sound wave diffusing cone, size, percent opening and
Perforated area eliminates peak value and the distortion of frequency response, thus to improve frequency to adjust the sound property of sound system generation
Response, and there is no increase production cost.
The utility model technical scheme applied to solve the technical problem is as follows:
A kind of sound system convenient for eliminating frequency response peak value, comprising: loudspeaker box is arranged in loudspeaker enclosure body
Loudspeaker, and be arranged in that loudspeaker enclosure is external and the sound wave diffusing cone with loudspeaker face；
The sound wave diffusing cone includes shell and the bottom case that outer casing bottom is arranged in；
The shell and bottom case form a coupled chamber, and the shell is provided with several acoustic damping holes.
Preferably, acoustical cotton is filled in the coupled chamber.
Preferably, the acoustical cotton is highdensity sponge, miscellaneous cloth cotton, glass or polyester cotton.
Preferably, the acoustic damping hole is circular hole or elliptical aperture.
Preferably, the acoustic damping hole is stepped hole, and the outer surface in acoustic damping hole is arranged in the big nose end of the stepped hole,
The inner surface in acoustic damping hole is arranged in the small bore end of the stepped hole；
The big nose end of the stepped hole is arranged to the conical surface.
Preferably, the acoustic damping hole is uniformly arranged on entire shell.
Preferably, the cross sectional shape of the coupled chamber is triangle, isosceles trapezoid or index shape.
Compared with prior art, the embodiment of the present application mainly have it is following the utility model has the advantages that
The sound wave that loudspeaker generates passes through the acoustic damping hole on sound wave diffusing cone, enters in coupled chamber, by adjusting
Shape, size, percent opening and the perforated area in the acoustic damping hole on sound wave diffusing cone, to adjust the sound spy of sound system generation
Property, peak value and the distortion of frequency response are eliminated, thus to improve frequency response, and there is no increase production cost.
Detailed description of the invention
In order to illustrate more clearly of the scheme of the application, one will be made to attached drawing needed in embodiment description below
A simple introduction, it should be apparent that, the accompanying drawings in the following description is some embodiments of the present application, for ordinary skill
For personnel, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural representation of the sound system preferred embodiment convenient for elimination frequency response peak value in the utility model
Figure.
Fig. 2 is that the frequency response curve obtained using the utility model and frequency response curve in the prior art are compared
Figure.
Appended drawing reference:
100- loudspeaker box, 200- loudspeaker, 300- sound wave diffusing cone, 301- shell, 302- bottom case, 400- coupler
Body, 311- acoustic damping hole, 10- sound wave, 401- acoustical cotton.
Specific embodiment
Unless otherwise defined, all technical and scientific terms used herein and the skill for belonging to present techniques field
The normally understood meaning of art personnel is identical；It is specific that description is intended merely in the term used in the description of application herein
The purpose of embodiment, it is not intended that in limitation the application；In the description and claims of this application and above-mentioned Detailed description of the invention
Term " includes " and " having " and their any deformation, it is intended that cover and non-exclusive include.The explanation of the application
Book and claims or term " first " in above-mentioned attached drawing, " second " etc. rather than are used for for distinguishing different objects
Particular order is described.
Referenced herein " embodiment " is it is meant that a particular feature, structure, or characteristic described can wrap in conjunction with the embodiments
It is contained at least one embodiment of the application.Each position in the description occur the phrase might not each mean it is identical
Embodiment, nor the independent or alternative embodiment with other embodiments mutual exclusion.Those skilled in the art explicitly and
Implicitly understand, embodiment described herein can be combined with other embodiments.
As shown in Figure 1, a kind of sound equipment system convenient for eliminating frequency response peak value that the utility model preferred embodiment provides
System comprising: loudspeaker box 100 is arranged in the loudspeaker 200 in loudspeaker box 100, and is arranged in loudspeaker box
The 100 outer and sound wave diffusing cones 300 with 200 face of loudspeaker；The sound wave diffusing cone 300 includes shell 301 and is arranged outside
The bottom case 302 of 301 bottom of shell；The shell 301 forms a coupled chamber 400 with bottom case 302, and the shell 301 is provided with
Several acoustic damping holes 311.
Several acoustic damping holes 311 are uniformly arranged on shell 301, diameter all phases in several acoustic damping holes 311
Deng.
The basic principle of the sound system is: entering after the sound wave 10 that loudspeaker 200 generates passes through sound wave diffusing cone 300
To coupled chamber 400, sound wave 10 is that coupled chamber 400 is entered by several acoustic damping holes 311, and acoustic damping hole 311 is connected to coupling
Cavity 400 and external environment are closed to adjust the acoustic resistance between coupled chamber 400 and external environment, thus to improve frequency response.
As shown in Fig. 2, A indicates the frequency response curve of the prior art, B performance uses the frequency of the sound system of the application
Response curve, by curve A compared with curve B is carried out, curve A has very high wave crest, and curve B is quite than more gentle, significantly
Eliminate its wave crest, effectively improve frequency response curve.It therefore, can be by adjusting the acoustic damping hole on shell 301
311 form and dimension, percent opening and perforated area eliminates frequency response to adjust the sound property of sound system generation
Peak value, thus to improve frequency response.
The frequency characteristic of sound system often indicates power with the ordinate of decibel scale and with the abscissa table of logarithmic scale
Show the frequency response curve of frequency to describe.As sound power 3dB lower than normal power, this power points is known as frequency response
High-frequency cut-off point and low frequency cut-off points.Frequency between high-frequency cut-off point and low frequency cut-off points, the as frequency of the equipment are rung
It answers；Acoustic pressure and delayed phase curve varying with frequency are called " amplitude-frequency characteristic " and " phase-frequency characteristic " respectively, are collectively referred to as " frequency spy
Property ".This is an important indicator for investigating sound equipment performance superiority and inferiority, and the performance and price of it and sound equipment have direct relationship,
The smaller frequency response curve for illustrating sound equipment of decibel value is more flat, distortion is smaller, performance is higher.
In the further preferred embodiment of the utility model, acoustical cotton 401 is filled in the coupled chamber 400.
Acoustical cotton is a kind of manmade inorganic fibre.Use the natural crystals such as quartz sand, lime stone, dolomite for main original
Material, cooperates the industrial chemicals such as some soda ash, borax to be melt into glass.Under melting state, got rid of by external force blowing produced cotton-shaped thin
Fiber is crossings on different level between fiber and fiber, is intertwined mutually, shows many tiny gaps.Acoustical cotton it is excellent
Gesture mainly has: 100% environment-friendly products, 100% recoverable；Firm, handy tasteless, waterproof, moisture-proof, permeability is good,
It easily processes, can need to be made various shape long service life according to different；Imputrescibility, can resist various microorganisms, fungi,
The corrosion of acid, salt and hydrocarbon；Any auxiliary agent, adhesive are not added in process of production.
Certainly, the acoustical cotton 401 of the coupled chamber 400 optionally can add or be not added, can in order to reduce its response frequency
To fill acoustical cotton 401 in coupled chamber 400, when response frequency original in order to obtain, then in coupled chamber 400 just
Addition acoustical cotton 401 is not needed.
In the further preferred embodiment of the utility model, the acoustical cotton 401 is highdensity sponge, miscellaneous cloth cotton, glass
Or polyester cotton.
Non-woven cotton refers to that the fiber of orientation or random alignment passes through friction, obvolvent or bonding or the combination of these methods
Be combined with each other manufactured thin slice, fibre web or batts.
Certain acoustical cotton 401 can also be other acoustical cottons that can reach sound-absorbing purpose, the acoustical cotton 40
Selection depends primarily on which type of sound property sound system to be generated.
In the further preferred embodiment of the utility model, the acoustic damping hole 311 is circular hole or elliptical aperture.
The aperture in the acoustic damping hole 311 is 0.005mm-1.0mm, and the acoustic damping hole 311 is formed by etching technique
On the shell on 301.Due to that can be adjusted by the acoustic damping hole 311 between 301 external environment of coupled chamber 400 and shell
Vapour lock eliminate the surface mount breathable barrier in shell 301 so that shell 301 plays the role of damping piece,
It is not improved production cost.Axisymmetrical of the acoustic damping hole 311 about shell 301.
In the further preferred embodiment of the utility model, the acoustic damping hole 311 is stepped hole, the macropore of the stepped hole
The outer surface in acoustic damping hole 311 is arranged in end, and the inner surface in acoustic damping hole 311 is arranged in the small bore end of the stepped hole；It is described
The big nose end of stepped hole is arranged to the conical surface.
In the further preferred embodiment of the utility model, the acoustic damping hole 311 is uniformly arranged on entire shell 301.
Form and dimension, percent opening and the perforated area in the acoustic damping hole 311 can all influence the sound of sound system generation
Sound characteristic, therefore can be according to the requirement of sound property come the form and dimension of adjusting hole, percent opening and perforated area.
The acoustic damping hole 311 can also be stepped hole, and big nose end is arranged close to the lateral wall of shell, and small bore end is close to coupling
Setting in cavity 400 is closed, damping effect can be improved in this way.
In the further preferred embodiment of the utility model, the cross sectional shape of the coupled chamber 400 is triangle.
The cross sectional shape of certain coupled chamber 400 can also be other shapes, such as isosceles trapezoid or index shape
Deng the side length at the top of the isosceles trapezoid is less than the side length of bottom.
In the further preferred embodiment of the utility model, the length of the bottom case 302 is equal to the length of loudspeaker box 100
Degree.10 major part of sound wave that can guarantee that loudspeaker 200 generates all enters coupled chamber 400 after sound wave diffusing cone 300
It is interior, guarantee the processing to most of sound wave 10 all acoustic damping holes 311.
The sound system can be applied on various stereo sets, and the peak of stereo set frequency response can be effectively improved
The problem of value is with distortion.
In conclusion the sound system provided by the utility model convenient for eliminating frequency response peak value, comprising: loudspeaker
The loudspeaker in loudspeaker enclosure body is arranged in cabinet, and loudspeaker enclosure is arranged in vitro and spreads with the sound wave of loudspeaker face
Cone；The sound wave diffusing cone includes shell and the bottom case that outer casing bottom is arranged in；The shell and bottom case form a coupler
Body, the shell are provided with several acoustic damping holes, so that the sound wave that loudspeaker generates passes through the acoustic damping hole on sound wave diffusing cone
Afterwards, it enters in coupled chamber, by adjusting shape, size, percent opening and the aperture face in the acoustic damping hole on sound wave diffusing cone
Product eliminates peak value and the distortion of frequency response to adjust the sound property of sound system generation, thus to improve frequency response,
And there is no increase production cost.
Obviously, embodiments described above is merely a part but not all of the embodiments of the present application, attached
The preferred embodiment of the application is given in figure, but is not intended to limit the scope of the patents of the application.The application can be with many differences
Form realize, on the contrary, purpose of providing these embodiments is keeps the understanding to disclosure of this application more thorough
Comprehensively.Although the application is described in detail with reference to the foregoing embodiments, for coming for those skilled in the art,
Can still modify to technical solution documented by aforementioned each specific embodiment, or to part of technical characteristic into
Row equivalence replacement.All equivalent structures done using present specification and accompanying drawing content, are directly or indirectly used in other
Relevant technical field, similarly within the application scope of patent protection.
Claims (7)
1. a kind of sound system convenient for eliminating frequency response peak value, comprising: loudspeaker box is arranged in loudspeaker enclosure body
Loudspeaker, and it is arranged in that loudspeaker enclosure is external and the sound wave diffusing cone with loudspeaker face, which is characterized in that the sound wave expands
Dissipating cone includes shell and the bottom case that outer casing bottom is arranged in；
The shell and bottom case form a coupled chamber, and the shell is provided with several acoustic damping holes.
2. the sound system according to claim 1 convenient for eliminating frequency response peak value, which is characterized in that the coupler
It is filled with acoustical cotton in vivo.
3. the sound system according to claim 2 convenient for eliminating frequency response peak value, which is characterized in that the acoustical cotton
For highdensity sponge, miscellaneous cloth cotton, glass or polyester cotton.
4. the sound system according to claim 1 convenient for eliminating frequency response peak value, which is characterized in that the acoustic damping
Hole is circular hole or elliptical aperture.
5. the sound system according to claim 1 convenient for eliminating frequency response peak value, which is characterized in that the acoustic damping
Hole is stepped hole, and the outer surface in acoustic damping hole is arranged in the big nose end of the stepped hole, and the small bore end setting of the stepped hole exists
The inner surface in acoustic damping hole；
The big nose end of the stepped hole is arranged to the conical surface.
6. the sound system according to claim 1 convenient for eliminating frequency response peak value, which is characterized in that the acoustic damping
Hole is uniformly arranged on entire shell.
7. the sound system according to claim 1 convenient for eliminating frequency response peak value, which is characterized in that the coupler
The cross sectional shape of body is triangle, isosceles trapezoid or index shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920223714.7U CN209419819U (en) | 2019-02-22 | 2019-02-22 | A kind of sound system convenient for eliminating frequency response peak value |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920223714.7U CN209419819U (en) | 2019-02-22 | 2019-02-22 | A kind of sound system convenient for eliminating frequency response peak value |
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| CN209419819U true CN209419819U (en) | 2019-09-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111246351A (en) * | 2019-11-28 | 2020-06-05 | 歌尔科技有限公司 | Loudspeaker and electronic equipment with same |
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2019
- 2019-02-22 CN CN201920223714.7U patent/CN209419819U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111246351A (en) * | 2019-11-28 | 2020-06-05 | 歌尔科技有限公司 | Loudspeaker and electronic equipment with same |
| CN111246351B (en) * | 2019-11-28 | 2021-06-01 | 歌尔科技有限公司 | Loudspeaker and electronic equipment with same |
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