CN101415135A - Loudspeaker - Google Patents
Loudspeaker Download PDFInfo
- Publication number
- CN101415135A CN101415135A CNA2007101514765A CN200710151476A CN101415135A CN 101415135 A CN101415135 A CN 101415135A CN A2007101514765 A CNA2007101514765 A CN A2007101514765A CN 200710151476 A CN200710151476 A CN 200710151476A CN 101415135 A CN101415135 A CN 101415135A
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- audio amplifier
- ceramic cavity
- sound
- low frequency
- loud speaker
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Abstract
The invention relates to a loudspeaker. A ceramic cavity is used as an internal sound box of a horn; the characteristics of high density, rigidity and radian of ceramic material is used for reducing the interaction between standing wave resonance and sound box vibration, so that the timbre is clear and transparent, the response is rapid, and no box sound render exists; the shed of a frequency divider is put by hands, and the frequency divider is glued in a ceramic ware and has better vibration proof structure; therefore, the influence on the sound quality by sound wave vibration is reduced to the lowest level.
Description
Technical field
What the present invention relates to is a kind of loud speaker, refers to that especially a kind of employing composite material constitutes jointly, can effectively reduce the reciprocation of standing wave sympathetic response and audio amplifier vibration, tone color limpid also adding is transparently also added fast with reaction, and do not have the loadspeaker structure that any case sound is played up.
Background technology
Loud speaker is the equipment that electric signal is become sound vibration, belongs to the most difficult part in the sound equipment regenerative system.A loud speaker comprises loudspeaker monomer, frequency divider and audio amplifier.
Loudspeaker are a kind of devices that the telecommunications signal can be converted to the acoustical signal energy.The telecommunications signal can refer to such as language, music or any other audio frequency (electric energy of the special shape in about 20～20000Hz) scopes, loudspeaker to keep this acoustical signal can essential characteristic.
The loudspeaker monomer is divided into high-frequency horn and Low frequency horn two classes usually.Common loudspeaker monomer is to utilize electric principle that electric energy is transformed into mechanical movement, electric current is flowed through and is suspended in coil in the uniform magnetic field, when making coil produce the piston motion of front and back, direction and size that sense of current and intensity decision coil move, move together at the upper conical vibrating diaphragm of coil so be connected, the motion of vibrating diaphragm causes surrounding air to produce alternating compression with lax, forms the pressure wave similar to the electric energy signal, is the sound of being heard.
Because the weight and the size difference of high and low frequency loudspeaker the best are very big, in order to solve the conflict in this design, loudspeaker is installed two or more loudspeaker monomers usually.Bigger Low frequency horn is responsible for the sounding of low frequency range, and high pitch then is to send from high-frequency horn, and high-frequency horn is a kind of toy trumpet of particular design; Many loud speakers also comprise the 3rd loudspeaker, are responsible for the part of middle pitch.In other words, be exactly the separation that low frequency, intermediate frequency and three kinds of loudspeaker of high frequency are correct in addition, make it drive frequency range respectively at optimum linear and low distortion.
The audio amplifier of many horn-type loudspeakers is according to Low frequency horn design, and for preventing the Low frequency horn interference of sound wave (back sound wave) dorsad, intermediate frequency and high-frequency horn monomer be in addition sound insulation or sealing backside usually.Though sound is to send individually from a plurality of loudspeaker, even these loudspeaker are distributed on the big zone of a slice, and ear can be combined these output, through suitably design, listen the sensation that the hearer does not have multiple sound source.
Wherein the difficulty that faces of the design of loudspeaker box has, when big volume of loudspeaker plays or extremely low frequency music, the amplitude of bass unit is quite huge with vibration, the energy of sound wave dorsad that it produced still is considerable, when no audio amplifier, sound wave is significantly offset just dorsad, can't reappear former sound low frequency tone sense.When traditional design is sealed dorsad sound wave with the tetragonal body wooden case, low-density is easy to produce the standing wave sympathetic response in fact with the parallel plank of low rigidity, so will contain the case sound composition that wooden case vibration itself produces in the audio frequency that is produced, but not has only the sounding of monomer, the reciprocation of its standing wave sympathetic response and audio amplifier vibration presents tone color in the time of can making sound equipment regeneration muddy and rotten, and the casing of working as audio amplifier is big more, and the problem of this respect is serious.
It is that traditional box loud speaker is needed the problem that overcomes badly that the standing wave sympathetic response of loudspeaker box is disturbed always, the quality of the increase casing of common employing timber, synthesized wood material, resinous blending fiber or other filler or with increase casing laterally or longitudinal bracing suppress the standing wave sympathetic response and disturb.The combination that design of this kind loudspeaker box structure and material are used, tone color is muddy still undesirable with rotten performance during for the regeneration of inhibition sound equipment, lay the blame on deficiency, therefore often will rely on complicated loudspeaker box structure, combination of monomers and frequency dividing circuit design and overcome this point in its casing density and structural strength.
Summary of the invention
So, for solving above-mentioned defective, the object of the present invention is to provide a kind of common loud speaker that constitutes of composite material that adopts, its maximum breakthrough is to use with material in conjunction with traditional loudspeaker box structure design, select to adopt high density, the ceramic material of rigidity and radian moulding is as the interface that intercepts sound wave and wooden case, can effectively suppress the reciprocation of standing wave sympathetic response and audio amplifier vibration, not having any case sound plays up, the design that adds the reflex of sound wave and rigid interface structure and special sound guide tube also can reach reacts boundary fast, does not easily absorb the sonic vibration energy and and then produces the what is called that resonance is produced and there is traditional audio amplifier " reverberation " with " sluggishness " phenomenon.
The present invention comprises an audio amplifier and the Low frequency horn of device on described audio amplifier top at least, it is characterized in that: described audio amplifier inside comprises a ceramic cavity, described Low frequency horn monomer solid is located at an opening part in described ceramic cavity dead ahead, the back side is to described ceramic cavity inside, with the interior audio amplifier of described ceramic cavity as described Low frequency horn, and described ceramic cavity extends the sound guide tube that similar reflection hole external form is set at the other end with respect to described opening, and described sound guide tube aperture position can be done different configurations because of the tone color of whole loud speaker pronunciation; So, when described Low frequency horn moves with piston motion mode front and back, the energy of sound wave dorsad of described Low frequency horn can be controlled in the described ceramic cavity, and described sound guide tube and ceramic cavity produce the variation of sound quality and this sound wave is derived rapidly outside the described ceramic cavity, with vibration that sound wave caused with negative effect minimizes to tonequality.
Wherein said ceramic cavity and described audio amplifier are combined closely, and are provided with an elastomeric layer in the middle of engaging interface, and whole combination can be strengthened the body rigidity of described audio amplifier, and significantly suppress it and bear the vibration that sound wave is direct and cause indirectly.When described ceramic cavity has when linking with the audio amplifier inwall, can be provided with elastomeric layer in the contact position, suppress described audio amplifier and bear the vibration that sound wave is direct and cause indirectly.Also comprise with hand scaffolding in the described audio amplifier and be glued at a frequency divider of pottery, make described frequency divider have high stability, can guarantee to reduce sonic vibration and back coupling, described frequency divider can be divided into input signal high frequency and low-frequency signal, exports the high bass monomer of loud speaker after the processing respectively again to.
Loud speaker is the equipment of distortion maximum in the audible component, and improving the distortion of loud speaker and the reproduction of dynamic sound field is Sound Engineer's ultimate challenge.Speaker design is the improvement on seeking to arrange in pairs or groups on loudspeaker box structure, material, the frequency divider constantly, in the hope of the reproduction of tone color.
The invention has the advantages that and utilize ceramic cavity as audio amplifier design within the described loudspeaker monomer, the coexist cavity of a heimholtz resonator such as ceramic cavity, described sound guide tube has the ability of sounding as the short tube of acoustic resonator, and is general just like the sympathetic response audio amplifier of musical instrument.That is to say that the sound that loudspeaker design of the present invention not only can reduce loudspeaker monomer and casing dyes shortcoming, also constructs the source of sound that increases pronunciation just like the heimholtz resonator ceramic cavity of musical instrument.Therefore tool ceramic cavity speaker design just especially seems to have the ability of moulding of sound field.
And when fixing described ceramic cavity, take the indirect type fixation of the described elastomeric layer of tool, message then will be attenuated and sponge when being delivered to the viscoelastic body layer, the vibrations that can intercept from ceramic cavity are directly delivered to the audio amplifier main body, and then intercept interfering with each other of different sounding monomers on the audio amplifier effectively.
Description of drawings
Fig. 1 is the side sectional view according to loud speaker of the present invention; With
Fig. 2 is the front section view according to loud speaker of the present invention.
Description of reference numerals: 10-audio amplifier; The 11-Low frequency horn; The 12-high-frequency horn; The 20-ceramic cavity; The 21-opening; The 22-elastomeric layer; The 23-sound guide tube; The 30-frequency divider.
Embodiment
Below in conjunction with accompanying drawing, be described in more detail with other technical characterictic and advantage the present invention is above-mentioned.
See also shown in Figure 1ly, it comprises an audio amplifier 10 and the Low frequency horn 11 of device on described audio amplifier 10 tops at least the present invention.Because general loudspeaker is the two or more loudspeaker monomers of device usually, bigger Low frequency horn is responsible for the sounding of low frequency range, and high pitch then is to send from high-frequency horn, so described audio amplifier 10 is implemented also to comprise a high-frequency horn 12.The invention is characterized in that described audio amplifier 10 inside comprise a ceramic cavity 20, described Low frequency horn 11 monomer solids are located at an opening 21 places in described ceramic cavity 20 dead aheads, carry out the reproducing audio loudspeaker and transmit next audio signal, described Low frequency horn 11 back sides are to described ceramic cavity 20 inside, with described ceramic cavity 20 as audio amplifier within the described Low frequency horn 11, and described ceramic cavity 20 is provided with a sound guide tube 23 in the other end extension with respect to described opening 21, and described sound guide tube 23 is one-body molded with described ceramic cavity 20.Pass through said structure, when described Low frequency horn 11 moves with piston motion mode front and back, the energy of sound wave dorsad of described Low frequency horn 11 can be controlled in the described ceramic cavity 20, and described sound guide tube 23 can rapidly be derived this sound wave outside described ceramic cavity 20, with vibration that sound wave caused with negative effect minimizes to tonequality.
Described ceramic cavity 20 can adopt high temperature sintering or ceramic powder to come moulding with the adhesive pressing; the ceramic cavity 20 that forms the high rigidity of antivibration is as audio amplifier within the described Low frequency horn 11; the outside special formed audio amplifier 10 that imposes again; described audio amplifier 10 materials can be that wood, synthetic wood, resinous blending fiber or other filler are made, and have protection and the effect of modifying simultaneously.Wherein said ceramic cavity 20 is combined closely with described audio amplifier 10, and be provided with elastomeric layer 22 in the middle of the joint interface, described elastomeric layer 22 is made up of a kind of elastomeric material at least, in order to strengthen the body rigidity of described audio amplifier 10, significantly suppress it and bear the vibration that sound wave is direct and cause indirectly.And if described ceramic cavity 20 contacts with described audio amplifier 10 inwalls, described elastomeric layer 22 (as shown in Figure 2) then also can be set in this contact position, the like this minimizing with the described audio amplifier 10 of inhibition born the vibration that sound wave is direct and cause indirectly.
The volume of described ceramic cavity 20 can cause the variation of air density change and sound press as the cavity volume of heimholtz resonator when the loudspeaker monomer moves, when cavity volume increases, make the acoustic capacitance increase can reduce resonance frequency.The direction of described sound guide tube 23 then can influence the diffraction phenomenon of sound field and different wave length sound with size, and then the ability of sculpture tonequality and sound field is arranged.When the sound hole of described ceramic cavity 20 increased, just like equivalent electric circuit Inductive component in parallel, resonance frequency improved; Described sound guide tube length increases or the aperture dwindles and work as, and sound quality is increased, thereby reduces resonance frequency, the expansion bass.
Again, engage with described audio amplifier 10 main bodys at described ceramic cavity 20 and to add described elastomeric layer 22 in the middle of the interface, just as the stacking notion of sandwich.The shock transfer of described ceramic cavity 20 can be absorbed by described elastomeric layer 22, therefore can not be delivered to described audio amplifier 10 main bodys.And when assembling fixedly, do not use the mode of traditional audio amplifier construction compartment, carry out piling up of interseptal board, but described ceramic cavity 20 is forced to cohere to be entrenched in described audio amplifier 10 main bodys in the chimeric mode in space with nail or dowel.So, because lack the company of nail or dowel etc. between described ceramic cavity 20 and described audio amplifier 10 main bodys be, message is disturbed and is just lacked bridge in the two transmission, and must transmit by described elastomeric layer 22, this message then will be attenuated and sponge when being delivered to described elastomeric layer 22, and then intercepts interfering with each other of different sounding monomers on the audio amplifier effectively.
The indirect type fixed form just is attached to the high, medium and low sound spectrum that constructs an integral body on the same fixed structure just like the sounding monomer on the same audio amplifier is looked into independent individual on the whole sound field of creation.Therefore the speaker designer individuality that it can be regarded as independent sounding is arranged and storehouse in the various combination mode, moulds different frequency spectrums, sound press shows with tone color.This specific character makes speaker designer can save many basic considerations when the trendy loudspeaker design of development to avoid the sounding monomer to interfere with each other problem in audio amplifier, and will design in the performance that focus focuses on frequency spectrum, sound press and the tone color of moulding sounding.
Also comprise with hand scaffolding on the described audio amplifier 10 and be glued at a frequency divider 30 of pottery, loudspeaker for the two or more loudspeaker monomers of device, described frequency divider 30 can be divided into input signal high frequency and low-frequency signal, export the high-frequency horn 12 and Low frequency horn 11 of loud speaker after the processing respectively again to, all parts of described high frequency and low frequency frequency divider, the hand scaffolding is fixed in the pottery of insulation respectively, and impose glue envelope, make described frequency divider 30 tool high density and high rigidity, can guarantee to reduce sonic vibration and back coupling, adopt PCB and Copper Foil with respect to traditional approach, have preferable vibration proof structure, can reduce to minimum to the influence of tonequality sonic vibration.
The above only is preferred embodiment of the present invention, only is illustrative for the purpose of the present invention, and nonrestrictive.Those skilled in the art is understood, and can carry out many changes to it in the spirit and scope that claim of the present invention limited, revise, even equivalence, but all will fall within the scope of protection of the present invention.
Claims (5)
1. loud speaker, it comprises an audio amplifier and the Low frequency horn of device on described audio amplifier top at least, it is characterized in that:
Described audio amplifier inside comprises a ceramic cavity, described Low frequency horn monomer solid is located at an opening part in described ceramic cavity dead ahead, the back side is towards described ceramic cavity inside, and described ceramic cavity is provided with a sound guide tube in the other end extension with respect to described opening;
Described Low frequency horn is with action before and after the piston motion mode, and the energy of sound wave dorsad of described Low frequency horn is controlled in the described ceramic cavity, and described sound guide tube is derived this sound wave outside described ceramic cavity rapidly.
2. loud speaker according to claim 1 is characterized in that: described ceramic cavity and described audio amplifier are combined closely, and are provided with an elastomeric layer in the middle of engaging interface.
3. loud speaker according to claim 2 is characterized in that: be provided with described elastomeric layer between the contact position of described ceramic cavity and described audio amplifier inwall.
4. loud speaker according to claim 1 is characterized in that: described sound guide tube and described ceramic cavity are one-body molded.
5. loud speaker according to claim 1 is characterized in that: also comprise with hand scaffolding in the described audio amplifier and be glued at a frequency divider of pottery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101514765A CN101415135A (en) | 2007-10-19 | 2007-10-19 | Loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101514765A CN101415135A (en) | 2007-10-19 | 2007-10-19 | Loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101415135A true CN101415135A (en) | 2009-04-22 |
Family
ID=40595397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101514765A Pending CN101415135A (en) | 2007-10-19 | 2007-10-19 | Loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101415135A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103905951A (en) * | 2014-01-09 | 2014-07-02 | 唐永均 | Loudspeaker and acoustic wave pressure dividing guider thereof |
| CN105451119A (en) * | 2015-12-08 | 2016-03-30 | 庞享 | Sound box capable of improving low-pitch sound quality |
-
2007
- 2007-10-19 CN CNA2007101514765A patent/CN101415135A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103905951A (en) * | 2014-01-09 | 2014-07-02 | 唐永均 | Loudspeaker and acoustic wave pressure dividing guider thereof |
| CN103905951B (en) * | 2014-01-09 | 2018-08-21 | 唐永均 | A kind of loud speaker and its sound wave divide guider |
| CN105451119A (en) * | 2015-12-08 | 2016-03-30 | 庞享 | Sound box capable of improving low-pitch sound quality |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090422 |