CN104661163A - Loud speaker system for reducing distortion to change characteristic curve and manufacturing method of loud speaker system - Google Patents
Loud speaker system for reducing distortion to change characteristic curve and manufacturing method of loud speaker system Download PDFInfo
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Abstract
The invention relates to a loud speaker system, in particular a loud speaker system for reducing distortion to change a characteristic curve and a manufacturing method of the loud speaker system. According to the invention, the problem that the existing passive loud speaker system is large in total harmonic distortion and large in frequency cohesive difficulty is solved. The loud speaker system for reducing distortion to change the characteristic curve comprises a panel, a low pitch loud speaker, a high pitch loudspeaker, a squawker, a low pitch resonance chamber, a high pitch loud speaker protecting cover and a mid-pitch resonance cavity, wherein the lower pitch loud speaker is fixed at the lower part of the board of the panel in a mode of penetrating through the front and back; the high pitch loud speaker is fixed in the middle of the board of the panel in the mode of penetrating through the front and back; the squawker is fixed on the upper part of the board of the panel in the mode of penetrating through the front and the back; the low-pitch resonance chamber is a cylindrical cavity body with an opened front end and a close rear end; the front opened end surface of the low pitch resonance chamber and the lower part of a rear board of the panel are in sealing fixation, and the axle of the low pitch resonance chamber is coincided with the axle of the low pitch loud speaker. The loud speaker system provided by the invention is suitable for home and office occasions.
Description
Technical field
The present invention relates to speaker system, specifically a kind of reduction distortion changes characteristic speaker system and manufacture method thereof.
Background technology
Speaker system is commonly called as audio amplifier, is the capital equipment in sound recovery system, and its quality height decides the quality of whole sound recovery system tonequality.Existing speaker system is mainly divided into following two kinds: one is active loudspeaker system, and another kind is passive loudspeaker systems.Wherein, passive loudspeaker systems is divided into again following two kinds: a kind of is the passive loudspeaker systems adopting closed box structure, and another kind is the passive loudspeaker systems adopting phase inverting box structure.But practice shows, no matter is any passive loudspeaker systems, all there is the problem that total harmonic distortion is large, frequency linking difficulty is large.
Total harmonic distortion is mainly caused by following four factors greatly: one, the distortion that causes of loud speaker self: 1) the diffuser distortion caused in uneven thickness: uneven due to cone thickness, when the signal of telecommunication promotes voice coil loudspeaker voice coil drive cone vibration, the bend portions change that cone is thick is little, thin bend portions change greatly, being and having become the sound wave of shape of now loud speaker output.2) the different distortion caused of loud speaker magnetic gap magnitude of field intensity: the magnetic gap of loud speaker is made up of magnetic conductive board and iron core, and the thickness of magnetic conductive board is certain, and the width of voice coil loudspeaker voice coil conductor part is also certain.When voice coil loudspeaker voice coil promotes to move between magnetic gap by the signal of telecommunication, if the magnetic field intensity of magnetic gap is large, then the signal of telecommunication is large to the motive force of voice coil loudspeaker voice coil, if the magnetic field intensity of magnetic gap is little, then the motive force of the signal of telecommunication to voice coil loudspeaker voice coil is little.When voice coil loudspeaker voice coil is subject to large motive force, the Oscillation Amplitude of cone can strengthen, after the width of voice coil loudspeaker voice coil conductor part is beyond the thickness of magnetic conductive board, enter the region that magnetic gap magnetic field intensity is little, the magnetic field intensity of magnetic gap reduces just to reduce the motive force of voice coil loudspeaker voice coil, the sound wave of a distortion that what now loud speaker exported is.3) loudspeaker support resonates the distortion caused: the support of loud speaker is shaping or casting by steel plate punched.After loud speaker promotes by the large signal of telecommunication, the Oscillation Amplitude of cone strengthens, and any support all can produce mechanical resonance under specific frequency and Oscillation Amplitude, causes the mechanical resonance distortion of loudspeaker support.Above distortion also has a common ground, and the Oscillation Amplitude being exactly diffuser is larger, and the distortion of generation is larger.Two, the distortion that causes of body structure: the casing of existing passive speaker system is square structure mostly.From physical principle, the sound wave that loud speaker sends spreads in atmosphere with the form of spherical wave.When the sound wave sent when loud speaker rear end spreads in square casing, the physical phenomenons such as refraction, reflection will be produced, make sound wave become disorderly and unsystematic, create the distortion of body structure.Three, the distortion that causes of casing mechanical resonance: the casing of passive loudspeaker systems is not a very large object of the scale of construction, and its casing is all be made up of board-like material, form the less casing of the scale of construction so this by board-like material, will mechanical resonance be produced under the vibration of loud speaker.Its mechanical resonance frequency, just occurs within audiorange.Four, the distortion that causes of passive loudspeaker systems mounting means: when the characteristic curve of test loudspeaker, will test under standard baffle condition, be to overcome so-called acoustic short circuit.This so-called acoustic short circuit is the physical phenomenon that loud speaker produces under complete free-field condition in fact.When applying the positive signal of telecommunication to loud speaker, cone vibrates forward, to cone during loud speaker applying negative signal to after vibration, now at the edge of loud speaker, vibration forward and the replenish air vibrating sound wave backward will be formed, the output acoustic pressure of loud speaker front end is reduced, thus creates so-called acoustic short circuit.But loud speaker sound wave now exports, and in loud speaker parallel lines direction, has one group of sound wave being different from loud speaker front-end and back-end.Contain forward due to this group sound wave and to the sound wave of after vibration, be that an existing sound wave sine has again sound wave to bear the combination sound wave of string signal, so this group sound wave is not only very but also real.Having people just to utilize this feature of loud speaker abroad, invent a kind of audio amplifier not having casing, is three groups of loud speaker parallel devices in circular cylinder mould, and often organize two elemental area opposites and install, layering is fixed on support.As can be seen from above example, loud speaker not only sends sound wave forward, sends sound wave too backward.But the sound wave that conventional art sends loud speaker to the back-end intercepts in casing, even if the pilot hole device of some phase inverting box is in audio amplifier front end, its output sound wave is also a mixed and disorderly sound wave.And the sectional area of pilot hole is less than the surface area of diffuser, the sound wave be guided out is the sub-fraction of loud speaker rear end sound wave, which forms the distortion that passive loudspeaker systems mounting means causes.
Frequency linking difficulty is mainly caused by following three kinds of factors greatly: one, in the design of passive loudspeaker systems, need the physical dimension first determining casing.After the physical dimension of casing is determined, loud speaker is combined with casing and will forms one group of new characteristic curve, and this group characteristic curve is not once meet standard-required, and it is very difficult for changing it.Two, the linking of passive loudspeaker systems frequency will use frequency divider, and the electric capacity in frequency divider and inductance all have phase shift effect to AC signal.This phase shift effect can produce phase difference around the part-frequency point of frequency divider, and these phase differences can form large distortion sheet, increase the distortion factor of system.In addition, after adopting these devices, the characteristic curve of speaker system can be changed, also just add the difficulty be connected between frequency.Three, in the design of three frequency division passive loudspeaker systems, need to adopt special Squawker, but the power output of Squawker is all smaller, sensitivity is also lower, and its characteristic curve is difficult to be connected with the frequency of woofer and high pitch loudspeaker.In addition, after adopting multiple loud speaker, the sound wave that their rear ends send can mutually interference in casing, makes that the characteristic curve of passive loudspeaker systems is more difficult to be determined, also just further increases the difficulty be connected between frequency.
Based on this, be necessary to invent a kind of brand-new speaker system, the problem that existing passive speaker system total harmonic distortion is large to solve, frequency linking difficulty is large.
Summary of the invention
In order to solve, existing passive speaker system total harmonic distortion is large in the present invention, frequency is connected the large problem of difficulty, provides a kind of reduction distortion and changes characteristic speaker system and manufacture method thereof.
The present invention adopts following technical scheme to realize: a kind of reduction distortion changes characteristic speaker system, comprises panel, woofer, high pitch loudspeaker, Squawker, bass resonator, high pitch loudspeaker guard shield, middle pitch resonator; Wherein, the plate basifacial being fixed on panel is run through before and after woofer; The plate Middle face being fixed on panel is run through before and after high pitch loudspeaker; The top, plate face being fixed on panel is run through before and after Squawker; Bass resonator is that front end is provided with circular cylindrical cavity that is uncovered, back-end closure; The uncovered end face in front end of bass resonator and the rear plate basifacial of panel airtight fixing, and the axis of bass resonator and the dead in line of woofer; High pitch loudspeaker guard shield is that front end is provided with box-shaped cover body that is uncovered, back-end closure; The uncovered end face in front end of high pitch loudspeaker guard shield and the rear plate Middle face of panel are fixed, and high pitch loudspeaker guard shield covers at the rear side of high pitch loudspeaker; Middle pitch resonator is that front end is provided with circular cylindrical cavity that is uncovered, back-end closure; The uncovered end face in front end of middle pitch resonator and the top, rear plate face of panel airtight fixing, and the axis of middle pitch resonator and the dead in line of Squawker; The volume of middle pitch resonator is less than the volume of bass resonator.
During work, owing to being communicated with for airtight between woofer with bass resonator, and bass resonator is circular cylindrical cavity, makes bass resonator define an air spring.In like manner, owing to being communicated with for airtight between Squawker with middle pitch resonator, and middle pitch resonator is circular cylindrical cavity, makes middle pitch resonator define an air spring.When the cone of woofer (Squawker) vibrates forward, air spring is applied with a reaction suction to cone, and the Oscillation Amplitude of cone is reduced.When the cone of woofer (Squawker) is to after vibration, air spring is applied with a resistance to cone, also makes the Oscillation Amplitude of cone reduce.Due to the effect of air spring, no matter cone vibrates forward or to after vibration, it is all subject to a parallel direction power (reaction suction or resistance).Therefore, the uneven bending change of cone thickness disappears substantially, and the distortion caused because diffuser is in uneven thickness is also just basic to disappear.Meanwhile, under the effect of air spring, the part of voice coil loudspeaker voice coil conductor width is controlled in the large scope of magnetic gap magnetic field intensity to greatest extent, also makes the distortion caused because of loud speaker magnetic gap magnitude of field intensity difference substantially disappear.In addition, because the Oscillation Amplitude of cone reduces, also make because the loudspeaker support distortion caused of resonating disappears substantially.In above process, owing to have employed middle pitch resonator, make the power output of Squawker and the choice of sensitivity become very large, make the characteristic curve of woofer and the characteristic curve of high pitch loudspeaker be easy to link up thus, thus reduce frequency linking difficulty.Based on said process, compared with existing passive speaker system, one reduction distortion of the present invention changes characteristic speaker system and passes through brand new, greatly reduce total harmonic distortion on the one hand, greatly reduce frequency on the other hand and be connected difficulty, efficiently solve the problem that existing passive speaker system total harmonic distortion is large, frequency linking difficulty is large thus.Test shows, when input power 1W, incoming frequency 100Hz, the distortion factor of existing passive speaker system up to 25.6%, and of the present inventionly a kind ofly reduces the distortion factor that distortion changes characteristic speaker system and is only 1.8% when input power 10W.
A kind of reduce distortion change characteristic speaker system manufacture method (the method for the manufacture of of the present invention one reduce distortion change characteristic speaker system), the method be adopt following steps realize:
A. panel is chosen; Before and after the plate basifacial of panel, run through fixing woofer, before and after the plate Middle face of panel, run through fixing high pitch loudspeaker, before and after the top, plate face of panel, run through fixing Squawker;
B. choose front end and be provided with circular cylindrical cavity that is uncovered, back-end closure, and using this circular cylindrical cavity as bass resonator; By airtight fixing for the rear plate basifacial of uncovered for the front end of bass resonator end face and panel, and ensure the axis of bass resonator and the dead in line of woofer;
C. choose front end and be provided with box-shaped cover body that is uncovered, back-end closure, and using this box-shaped cover body as high pitch loudspeaker guard shield; The rear plate Middle face of uncovered for the front end of high pitch loudspeaker guard shield end face and panel is fixed, and ensures that high pitch loudspeaker guard shield covers at the rear side of high pitch loudspeaker;
D. choose front end and be provided with circular cylindrical cavity that is uncovered, back-end closure, and using this circular cylindrical cavity as middle pitch resonator, ensure that the volume of middle pitch resonator is less than the volume of bass resonator simultaneously; By airtight fixing for the top, rear plate face of uncovered for the front end of middle pitch resonator end face and panel, and ensure the axis of middle pitch resonator and the dead in line of Squawker.
The present invention is rational in infrastructure, it is ingenious to design, and efficiently solves that existing passive speaker system total harmonic distortion is large, frequency is connected the large problem of difficulty, is applicable to office space and family.
Accompanying drawing explanation
Fig. 1 is the first structural representation of the present invention.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is the second structural representation of the present invention.
Fig. 4 is the A-A cutaway view of Fig. 3.
Fig. 5 is the third structural representation of the present invention.
Fig. 6 is the A-A cutaway view of Fig. 5.
Fig. 7 is the 4th kind of structural representation of the present invention.
Fig. 8 is the A-A cutaway view of Fig. 7.
Fig. 9 is the 5th kind of structural representation of the present invention.
Figure 10 is the A-A cutaway view of Fig. 9.
In figure: 1-panel, 2-woofer, 3-high pitch loudspeaker, 4-Squawker, 5-bass resonator, 6-high pitch loudspeaker guard shield, 7-middle pitch resonator, 8-casing, 9-sound absorbing layer, 10-footing, 11-base plate.
Embodiment
embodiment one
A kind of reduction distortion changes characteristic speaker system, comprises panel 1, woofer 2, high pitch loudspeaker 3, Squawker 4, bass resonator 5, high pitch loudspeaker guard shield 6, middle pitch resonator 7; Wherein, the plate basifacial being fixed on panel 1 is run through before and after woofer 2; The plate Middle face being fixed on panel 1 is run through before and after high pitch loudspeaker 3; The top, plate face being fixed on panel 1 is run through before and after Squawker 4; Bass resonator 5 is uncovered for front end is provided with, the circular cylindrical cavity of back-end closure; The uncovered end face in front end of bass resonator 5 and the rear plate basifacial of panel 1 airtight fixing, and the dead in line of the axis of bass resonator 5 and woofer 2; High pitch loudspeaker guard shield 6 is uncovered for front end is provided with, the box-shaped cover body of back-end closure; The uncovered end face in front end of high pitch loudspeaker guard shield 6 and the rear plate Middle face of panel 1 are fixed, and high pitch loudspeaker guard shield 6 covers at the rear side of high pitch loudspeaker 3; Middle pitch resonator 7 is uncovered for front end is provided with, the circular cylindrical cavity of back-end closure; The uncovered end face in front end of middle pitch resonator 7 and the top, rear plate face of panel 1 airtight fixing, and the dead in line of the axis of middle pitch resonator 7 and Squawker 4; The volume of middle pitch resonator 7 is less than the volume of bass resonator 5.
As shown in Figure 1-2, in the present embodiment, casing 8, sound absorbing layer 9, footing 10 is also comprised; The front end of casing 8 is provided with uncovered; Panel 1 cap seal is on the front end of casing 8 is uncovered; Bass resonator 5, high pitch loudspeaker guard shield 6, middle pitch resonator 7 are all positioned at the inner chamber of casing 8; The inner chamber that sound absorbing layer 9 is filled in casing 8 is anterior; Bass resonator 5, high pitch loudspeaker guard shield 6, middle pitch resonator 7 are all wrapped up by sound absorbing layer 9; The number of footing 10 is multiple; Each footing 10 is all fixed on the outer bottom of casing 8.
The number of the number of described woofer 2, the number of high pitch loudspeaker 3, Squawker 4, the number of bass resonator 5, the number of high pitch loudspeaker guard shield 6, the number of middle pitch resonator 7 are one.
During concrete enforcement, described woofer 2 adopts diameter to be the loud speaker of 260mm; Described high pitch loudspeaker 3 adopts frequency range to be the ribbon high pitch loudspeaker of 6000-20000Hz; Described Squawker 4 adopts diameter to be the loud speaker of 173mm; The volume of described bass resonator 5 is 6750cm3, lower-frequency limit is 43Hz, upper frequency limit is 500Hz; The volume of described middle pitch resonator 7 is 755cm3, and lower-frequency limit is 500Hz, and upper frequency limit is 6000Hz.
A kind of reduce distortion change characteristic speaker system manufacture method (the method for the manufacture of of the present invention one reduce distortion change characteristic speaker system), the method be adopt following steps realize:
A. panel 1 is chosen; Before and after the plate basifacial of panel 1, run through fixing woofer 2, before and after the plate Middle face of panel 1, run through fixing high pitch loudspeaker 3, before and after the top, plate face of panel 1, run through fixing Squawker 4;
B. choose front end and be provided with circular cylindrical cavity that is uncovered, back-end closure, and using this circular cylindrical cavity as bass resonator 5; By airtight fixing for the rear plate basifacial of uncovered for the front end of bass resonator 5 end face and panel 1, and ensure the axis of bass resonator 5 and the dead in line of woofer 2;
C. choose front end and be provided with box-shaped cover body that is uncovered, back-end closure, and using this box-shaped cover body as high pitch loudspeaker guard shield 6; The rear plate Middle face of uncovered for the front end of high pitch loudspeaker guard shield 6 end face and panel 1 is fixed, and ensures that high pitch loudspeaker guard shield 6 covers at the rear side of high pitch loudspeaker 3;
D. choose front end and be provided with circular cylindrical cavity that is uncovered, back-end closure, and using this circular cylindrical cavity as middle pitch resonator 7, ensure that the volume of middle pitch resonator 7 is less than the volume of bass resonator 5 simultaneously; By airtight fixing for the top, rear plate face of uncovered for the front end of middle pitch resonator 7 end face and panel 1, and ensure the axis of middle pitch resonator 7 and the dead in line of Squawker 4.
embodiment two
A kind of reduction distortion changes characteristic speaker system, comprises panel 1, woofer 2, high pitch loudspeaker 3, Squawker 4, bass resonator 5, high pitch loudspeaker guard shield 6, middle pitch resonator 7; Wherein, the plate basifacial being fixed on panel 1 is run through before and after woofer 2; The plate Middle face being fixed on panel 1 is run through before and after high pitch loudspeaker 3; The top, plate face being fixed on panel 1 is run through before and after Squawker 4; Bass resonator 5 is uncovered for front end is provided with, the circular cylindrical cavity of back-end closure; The uncovered end face in front end of bass resonator 5 and the rear plate basifacial of panel 1 airtight fixing, and the dead in line of the axis of bass resonator 5 and woofer 2; High pitch loudspeaker guard shield 6 is uncovered for front end is provided with, the box-shaped cover body of back-end closure; The uncovered end face in front end of high pitch loudspeaker guard shield 6 and the rear plate Middle face of panel 1 are fixed, and high pitch loudspeaker guard shield 6 covers at the rear side of high pitch loudspeaker 3; Middle pitch resonator 7 is uncovered for front end is provided with, the circular cylindrical cavity of back-end closure; The uncovered end face in front end of middle pitch resonator 7 and the top, rear plate face of panel 1 airtight fixing, and the dead in line of the axis of middle pitch resonator 7 and Squawker 4; The volume of middle pitch resonator 7 is less than the volume of bass resonator 5.
As shown in Figure 3-4, in the present embodiment, casing 8, sound absorbing layer 9, footing 10 is also comprised; The front end of casing 8 is provided with uncovered; Panel 1 cap seal is on the front end of casing 8 is uncovered; Bass resonator 5, high pitch loudspeaker guard shield 6, middle pitch resonator 7 are all positioned at the inner chamber of casing 8; The inner chamber that sound absorbing layer 9 is filled in casing 8 is anterior; Bass resonator 5, high pitch loudspeaker guard shield 6, middle pitch resonator 7 are all wrapped up by sound absorbing layer 9; The number of footing 10 is multiple; Each footing 10 is all fixed on the outer bottom of casing 8.
The number of described woofer 2, the number of bass resonator 5 are two; The number of described high pitch loudspeaker 3, the number of Squawker 4, the number of high pitch loudspeaker guard shield 6, the number of middle pitch resonator 7 are one.
During concrete enforcement, described woofer 2 adopts diameter to be the loud speaker of 260mm; Described high pitch loudspeaker 3 adopts frequency range to be the ribbon high pitch loudspeaker of 6000-20000Hz; Described Squawker 4 adopts diameter to be the loud speaker of 173mm; The volume of described bass resonator 5 is 6750cm3, lower-frequency limit is 43Hz, upper frequency limit is 500Hz; The volume of described middle pitch resonator 7 is 755cm3, and lower-frequency limit is 500Hz, and upper frequency limit is 6000Hz.
A kind of reduce distortion change characteristic speaker system manufacture method (the method for the manufacture of of the present invention one reduce distortion change characteristic speaker system), the method be adopt following steps realize:
A. panel 1 is chosen; Before and after the plate basifacial of panel 1, run through fixing woofer 2, before and after the plate Middle face of panel 1, run through fixing high pitch loudspeaker 3, before and after the top, plate face of panel 1, run through fixing Squawker 4;
B. choose front end and be provided with circular cylindrical cavity that is uncovered, back-end closure, and using this circular cylindrical cavity as bass resonator 5; By airtight fixing for the rear plate basifacial of uncovered for the front end of bass resonator 5 end face and panel 1, and ensure the axis of bass resonator 5 and the dead in line of woofer 2;
C. choose front end and be provided with box-shaped cover body that is uncovered, back-end closure, and using this box-shaped cover body as high pitch loudspeaker guard shield 6; The rear plate Middle face of uncovered for the front end of high pitch loudspeaker guard shield 6 end face and panel 1 is fixed, and ensures that high pitch loudspeaker guard shield 6 covers at the rear side of high pitch loudspeaker 3;
D. choose front end and be provided with circular cylindrical cavity that is uncovered, back-end closure, and using this circular cylindrical cavity as middle pitch resonator 7, ensure that the volume of middle pitch resonator 7 is less than the volume of bass resonator 5 simultaneously; By airtight fixing for the top, rear plate face of uncovered for the front end of middle pitch resonator 7 end face and panel 1, and ensure the axis of middle pitch resonator 7 and the dead in line of Squawker 4.
embodiment three
A kind of reduction distortion changes characteristic speaker system, comprises panel 1, woofer 2, high pitch loudspeaker 3, Squawker 4, bass resonator 5, high pitch loudspeaker guard shield 6, middle pitch resonator 7; Wherein, the plate basifacial being fixed on panel 1 is run through before and after woofer 2; The plate Middle face being fixed on panel 1 is run through before and after high pitch loudspeaker 3; The top, plate face being fixed on panel 1 is run through before and after Squawker 4; Bass resonator 5 is uncovered for front end is provided with, the circular cylindrical cavity of back-end closure; The uncovered end face in front end of bass resonator 5 and the rear plate basifacial of panel 1 airtight fixing, and the dead in line of the axis of bass resonator 5 and woofer 2; High pitch loudspeaker guard shield 6 is uncovered for front end is provided with, the box-shaped cover body of back-end closure; The uncovered end face in front end of high pitch loudspeaker guard shield 6 and the rear plate Middle face of panel 1 are fixed, and high pitch loudspeaker guard shield 6 covers at the rear side of high pitch loudspeaker 3; Middle pitch resonator 7 is uncovered for front end is provided with, the circular cylindrical cavity of back-end closure; The uncovered end face in front end of middle pitch resonator 7 and the top, rear plate face of panel 1 airtight fixing, and the dead in line of the axis of middle pitch resonator 7 and Squawker 4; The volume of middle pitch resonator 7 is less than the volume of bass resonator 5.
As seen in figs. 5-6, in the present embodiment, casing 8, sound absorbing layer 9, footing 10 is also comprised; The front end of casing 8 is provided with uncovered; Panel 1 cap seal is on the front end of casing 8 is uncovered; Bass resonator 5, high pitch loudspeaker guard shield 6, middle pitch resonator 7 are all positioned at the inner chamber of casing 8; The inner chamber that sound absorbing layer 9 is filled in casing 8 is anterior; Bass resonator 5, high pitch loudspeaker guard shield 6, middle pitch resonator 7 are all wrapped up by sound absorbing layer 9; The number of footing 10 is multiple; Each footing 10 is all fixed on the outer bottom of casing 8.
The number of the number of described woofer 2, the number of high pitch loudspeaker 3, Squawker 4, the number of bass resonator 5, the number of high pitch loudspeaker guard shield 6, the number of middle pitch resonator 7 are two.
During concrete enforcement, described woofer 2 adopts diameter to be the loud speaker of 260mm; Described high pitch loudspeaker 3 adopts frequency range to be the ribbon high pitch loudspeaker of 6000-20000Hz; Described Squawker 4 adopts diameter to be the loud speaker of 173mm; The volume of described bass resonator 5 is 6750cm3, lower-frequency limit is 43Hz, upper frequency limit is 500Hz; The volume of described middle pitch resonator 7 is 755cm3, and lower-frequency limit is 500Hz, and upper frequency limit is 6000Hz.
A kind of reduce distortion change characteristic speaker system manufacture method (the method for the manufacture of of the present invention one reduce distortion change characteristic speaker system), the method be adopt following steps realize:
A. panel 1 is chosen; Before and after the plate basifacial of panel 1, run through fixing woofer 2, before and after the plate Middle face of panel 1, run through fixing high pitch loudspeaker 3, before and after the top, plate face of panel 1, run through fixing Squawker 4;
B. choose front end and be provided with circular cylindrical cavity that is uncovered, back-end closure, and using this circular cylindrical cavity as bass resonator 5; By airtight fixing for the rear plate basifacial of uncovered for the front end of bass resonator 5 end face and panel 1, and ensure the axis of bass resonator 5 and the dead in line of woofer 2;
C. choose front end and be provided with box-shaped cover body that is uncovered, back-end closure, and using this box-shaped cover body as high pitch loudspeaker guard shield 6; The rear plate Middle face of uncovered for the front end of high pitch loudspeaker guard shield 6 end face and panel 1 is fixed, and ensures that high pitch loudspeaker guard shield 6 covers at the rear side of high pitch loudspeaker 3;
D. choose front end and be provided with circular cylindrical cavity that is uncovered, back-end closure, and using this circular cylindrical cavity as middle pitch resonator 7, ensure that the volume of middle pitch resonator 7 is less than the volume of bass resonator 5 simultaneously; By airtight fixing for the top, rear plate face of uncovered for the front end of middle pitch resonator 7 end face and panel 1, and ensure the axis of middle pitch resonator 7 and the dead in line of Squawker 4.
embodiment four
A kind of reduction distortion changes characteristic speaker system, comprises panel 1, woofer 2, high pitch loudspeaker 3, Squawker 4, bass resonator 5, high pitch loudspeaker guard shield 6, middle pitch resonator 7; Wherein, the plate basifacial being fixed on panel 1 is run through before and after woofer 2; The plate Middle face being fixed on panel 1 is run through before and after high pitch loudspeaker 3; The top, plate face being fixed on panel 1 is run through before and after Squawker 4; Bass resonator 5 is uncovered for front end is provided with, the circular cylindrical cavity of back-end closure; The uncovered end face in front end of bass resonator 5 and the rear plate basifacial of panel 1 airtight fixing, and the dead in line of the axis of bass resonator 5 and woofer 2; High pitch loudspeaker guard shield 6 is uncovered for front end is provided with, the box-shaped cover body of back-end closure; The uncovered end face in front end of high pitch loudspeaker guard shield 6 and the rear plate Middle face of panel 1 are fixed, and high pitch loudspeaker guard shield 6 covers at the rear side of high pitch loudspeaker 3; Middle pitch resonator 7 is uncovered for front end is provided with, the circular cylindrical cavity of back-end closure; The uncovered end face in front end of middle pitch resonator 7 and the top, rear plate face of panel 1 airtight fixing, and the dead in line of the axis of middle pitch resonator 7 and Squawker 4; The volume of middle pitch resonator 7 is less than the volume of bass resonator 5.
As Figure 7-8, in the present embodiment, casing 8, sound absorbing layer 9, footing 10 is also comprised; The front end of casing 8 is provided with uncovered; Panel 1 cap seal is on the front end of casing 8 is uncovered; Bass resonator 5, high pitch loudspeaker guard shield 6, middle pitch resonator 7 are all positioned at the inner chamber of casing 8; The inner chamber that sound absorbing layer 9 is filled in casing 8 is anterior; Bass resonator 5, high pitch loudspeaker guard shield 6, middle pitch resonator 7 are all wrapped up by sound absorbing layer 9; The number of footing 10 is multiple; Each footing 10 is all fixed on the outer bottom of casing 8.
The number of described woofer 2, the number of bass resonator 5 are four; The number of described high pitch loudspeaker 3, the number of Squawker 4, the number of high pitch loudspeaker guard shield 6, the number of middle pitch resonator 7 are two.
During concrete enforcement, described woofer 2 adopts diameter to be the loud speaker of 260mm; Described high pitch loudspeaker 3 adopts frequency range to be the ribbon high pitch loudspeaker of 6000-20000Hz; Described Squawker 4 adopts diameter to be the loud speaker of 173mm; The volume of described bass resonator 5 is 6750cm3, lower-frequency limit is 43Hz, upper frequency limit is 500Hz; The volume of described middle pitch resonator 7 is 755cm3, and lower-frequency limit is 500Hz, and upper frequency limit is 6000Hz.
A kind of reduce distortion change characteristic speaker system manufacture method (the method for the manufacture of of the present invention one reduce distortion change characteristic speaker system), the method be adopt following steps realize:
A. panel 1 is chosen; Before and after the plate basifacial of panel 1, run through fixing woofer 2, before and after the plate Middle face of panel 1, run through fixing high pitch loudspeaker 3, before and after the top, plate face of panel 1, run through fixing Squawker 4;
B. choose front end and be provided with circular cylindrical cavity that is uncovered, back-end closure, and using this circular cylindrical cavity as bass resonator 5; By airtight fixing for the rear plate basifacial of uncovered for the front end of bass resonator 5 end face and panel 1, and ensure the axis of bass resonator 5 and the dead in line of woofer 2;
C. choose front end and be provided with box-shaped cover body that is uncovered, back-end closure, and using this box-shaped cover body as high pitch loudspeaker guard shield 6; The rear plate Middle face of uncovered for the front end of high pitch loudspeaker guard shield 6 end face and panel 1 is fixed, and ensures that high pitch loudspeaker guard shield 6 covers at the rear side of high pitch loudspeaker 3;
D. choose front end and be provided with circular cylindrical cavity that is uncovered, back-end closure, and using this circular cylindrical cavity as middle pitch resonator 7, ensure that the volume of middle pitch resonator 7 is less than the volume of bass resonator 5 simultaneously; By airtight fixing for the top, rear plate face of uncovered for the front end of middle pitch resonator 7 end face and panel 1, and ensure the axis of middle pitch resonator 7 and the dead in line of Squawker 4.
embodiment five
A kind of reduction distortion changes characteristic speaker system, comprises panel 1, woofer 2, high pitch loudspeaker 3, Squawker 4, bass resonator 5, high pitch loudspeaker guard shield 6, middle pitch resonator 7; Wherein, the plate basifacial being fixed on panel 1 is run through before and after woofer 2; The plate Middle face being fixed on panel 1 is run through before and after high pitch loudspeaker 3; The top, plate face being fixed on panel 1 is run through before and after Squawker 4; Bass resonator 5 is uncovered for front end is provided with, the circular cylindrical cavity of back-end closure; The uncovered end face in front end of bass resonator 5 and the rear plate basifacial of panel 1 airtight fixing, and the dead in line of the axis of bass resonator 5 and woofer 2; High pitch loudspeaker guard shield 6 is uncovered for front end is provided with, the box-shaped cover body of back-end closure; The uncovered end face in front end of high pitch loudspeaker guard shield 6 and the rear plate Middle face of panel 1 are fixed, and high pitch loudspeaker guard shield 6 covers at the rear side of high pitch loudspeaker 3; Middle pitch resonator 7 is uncovered for front end is provided with, the circular cylindrical cavity of back-end closure; The uncovered end face in front end of middle pitch resonator 7 and the top, rear plate face of panel 1 airtight fixing, and the dead in line of the axis of middle pitch resonator 7 and Squawker 4; The volume of middle pitch resonator 7 is less than the volume of bass resonator 5.
As shown in figs. 9-10, in the present embodiment, base plate 11, footing 10 is also comprised; Panel 1 is vertically fixed on the upper face leading edge of base plate 11; The number of footing 10 is multiple; Each footing 10 is all fixed on the lower face of base plate 11.
During concrete enforcement, described woofer 2 adopts diameter to be the loud speaker of 260mm; Described high pitch loudspeaker 3 adopts frequency range to be the ribbon high pitch loudspeaker of 6000-20000Hz; Described Squawker 4 adopts diameter to be the loud speaker of 173mm; The volume of described bass resonator 5 is 6750cm3, lower-frequency limit is 43Hz, upper frequency limit is 500Hz; The volume of described middle pitch resonator 7 is 755cm3, and lower-frequency limit is 500Hz, and upper frequency limit is 6000Hz.
A kind of reduce distortion change characteristic speaker system manufacture method (the method for the manufacture of of the present invention one reduce distortion change characteristic speaker system), the method be adopt following steps realize:
A. panel 1 is chosen; Before and after the plate basifacial of panel 1, run through fixing woofer 2, before and after the plate Middle face of panel 1, run through fixing high pitch loudspeaker 3, before and after the top, plate face of panel 1, run through fixing Squawker 4;
B. choose front end and be provided with circular cylindrical cavity that is uncovered, back-end closure, and using this circular cylindrical cavity as bass resonator 5; By airtight fixing for the rear plate basifacial of uncovered for the front end of bass resonator 5 end face and panel 1, and ensure the axis of bass resonator 5 and the dead in line of woofer 2;
C. choose front end and be provided with box-shaped cover body that is uncovered, back-end closure, and using this box-shaped cover body as high pitch loudspeaker guard shield 6; The rear plate Middle face of uncovered for the front end of high pitch loudspeaker guard shield 6 end face and panel 1 is fixed, and ensures that high pitch loudspeaker guard shield 6 covers at the rear side of high pitch loudspeaker 3;
D. choose front end and be provided with circular cylindrical cavity that is uncovered, back-end closure, and using this circular cylindrical cavity as middle pitch resonator 7, ensure that the volume of middle pitch resonator 7 is less than the volume of bass resonator 5 simultaneously; By airtight fixing for the top, rear plate face of uncovered for the front end of middle pitch resonator 7 end face and panel 1, and ensure the axis of middle pitch resonator 7 and the dead in line of Squawker 4.
Claims (8)
1. reduce distortion and change a characteristic speaker system, it is characterized in that: comprise panel (1), woofer (2), high pitch loudspeaker (3), Squawker (4), bass resonator (5), high pitch loudspeaker guard shield (6), middle pitch resonator (7); Wherein, the plate basifacial being fixed on panel (1) is run through before and after woofer (2); The plate Middle face being fixed on panel (1) is run through before and after high pitch loudspeaker (3); The top, plate face being fixed on panel (1) is run through before and after Squawker (4); Bass resonator (5) is uncovered for front end is provided with, the circular cylindrical cavity of back-end closure; The uncovered end face in front end of bass resonator (5) and the rear plate basifacial of panel (1) airtight fixing, and the dead in line of the axis of bass resonator (5) and woofer (2); High pitch loudspeaker guard shield (6) is uncovered for front end is provided with, the box-shaped cover body of back-end closure; The uncovered end face in front end of high pitch loudspeaker guard shield (6) and the rear plate Middle face of panel (1) are fixed, and high pitch loudspeaker guard shield (6) covers at the rear side of high pitch loudspeaker (3); Middle pitch resonator (7) is uncovered for front end is provided with, the circular cylindrical cavity of back-end closure; The uncovered end face in front end of middle pitch resonator (7) and the top, rear plate face of panel (1) airtight fixing, and the dead in line of the axis of middle pitch resonator (7) and Squawker (4); The volume of middle pitch resonator (7) is less than the volume of bass resonator (5).
2. one according to claim 1 reduces distortion and changes characteristic speaker system, it is characterized in that: also comprise casing (8), sound absorbing layer (9), footing (10); The front end of casing (8) is provided with uncovered; Panel (1) cap seal is on the front end of casing (8) is uncovered; Bass resonator (5), high pitch loudspeaker guard shield (6), middle pitch resonator (7) are all positioned at the inner chamber of casing (8); The inner chamber that sound absorbing layer (9) is filled in casing (8) is anterior; Bass resonator (5), high pitch loudspeaker guard shield (6), middle pitch resonator (7) are all wrapped up by sound absorbing layer (9); The number of footing (10) is multiple; Each footing (10) is all fixed on the outer bottom of casing (8).
3. one according to claim 2 reduces distortion and changes characteristic speaker system, it is characterized in that: the number of the number of described woofer (2), the number of high pitch loudspeaker (3), Squawker (4), the number of bass resonator (5), the number of high pitch loudspeaker guard shield (6), the number of middle pitch resonator (7) are one.
4. one according to claim 2 reduces distortion and changes characteristic speaker system, it is characterized in that: the number of described woofer (2), the number of bass resonator (5) are two; The number of described high pitch loudspeaker (3), the number of Squawker (4), the number of high pitch loudspeaker guard shield (6), the number of middle pitch resonator (7) are one.
5. one according to claim 2 reduces distortion and changes characteristic speaker system, it is characterized in that: the number of the number of described woofer (2), the number of high pitch loudspeaker (3), Squawker (4), the number of bass resonator (5), the number of high pitch loudspeaker guard shield (6), the number of middle pitch resonator (7) are two.
6. one according to claim 2 reduces distortion and changes characteristic speaker system, it is characterized in that: the number of described woofer (2), the number of bass resonator (5) are four; The number of described high pitch loudspeaker (3), the number of Squawker (4), the number of high pitch loudspeaker guard shield (6), the number of middle pitch resonator (7) are two.
7. one according to claim 1 reduces distortion and changes characteristic speaker system, it is characterized in that: also comprise base plate (11), footing (10); Panel (1) is vertically fixed on the upper face leading edge of base plate (11); The number of footing (10) is multiple; Each footing (10) is all fixed on the lower face of base plate (11).
8. reduce the manufacture method that distortion changes characteristic speaker system, the method changes characteristic speaker system for the manufacture of a kind of reduction distortion as claimed in claim 1, it is characterized in that: the method adopts following steps to realize:
A. panel (1) is chosen; Before and after the plate basifacial of panel (1), run through fixing woofer (2), before and after the plate Middle face of panel (1), run through fixing high pitch loudspeaker (3), before and after the top, plate face of panel (1), run through fixing Squawker (4);
B. choose front end and be provided with circular cylindrical cavity that is uncovered, back-end closure, and using this circular cylindrical cavity as bass resonator (5); By the uncovered end face in front end of bass resonator (5) and the rear plate basifacial of panel (1) airtight fixing, and ensure the axis of bass resonator (5) and the dead in line of woofer (2);
C. choose front end and be provided with box-shaped cover body that is uncovered, back-end closure, and using this box-shaped cover body as high pitch loudspeaker guard shield (6); The uncovered end face in front end of high pitch loudspeaker guard shield (6) and the rear plate Middle face of panel (1) are fixed, and ensures that high pitch loudspeaker guard shield (6) covers at the rear side of high pitch loudspeaker (3);
D. choose front end and be provided with circular cylindrical cavity that is uncovered, back-end closure, and using this circular cylindrical cavity as middle pitch resonator (7), ensure that the volume of middle pitch resonator (7) is less than the volume of bass resonator (5) simultaneously; By airtight fixing for the top, rear plate face of the uncovered end face in front end of middle pitch resonator (7) and panel (1), and ensure the axis of middle pitch resonator (7) and the dead in line of Squawker (4).
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105228051A (en) * | 2015-10-13 | 2016-01-06 | 无锡杰夫电声有限公司 | There is the multiple unit thin type audio amplifier of S shape conduit |
| CN106658242A (en) * | 2016-11-29 | 2017-05-10 | 张思源 | Three-unit spherical sound box |
| WO2018006553A1 (en) * | 2016-07-07 | 2018-01-11 | 歌尔股份有限公司 | Multi-speaker unit module and design method thereof, and electronic device |
| WO2020168729A1 (en) | 2019-02-19 | 2020-08-27 | 苏州上声电子股份有限公司 | Loudspeaker system |
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| CN204442670U (en) * | 2015-03-19 | 2015-07-01 | 阳泉市应用技术研究所 | A kind of reduction distortion changes characteristic speaker system |
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| CN2288564Y (en) * | 1997-03-28 | 1998-08-19 | 沙占起 | Loadspeaker box |
| CN2399893Y (en) * | 1999-11-23 | 2000-10-04 | 周德钊 | Circular full frequency loudspeaker |
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| CN104661163B (en) | 2018-07-31 |
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