CN103826183A - Band-pass type bass loudspeaker box and adjusting method thereof - Google Patents
Band-pass type bass loudspeaker box and adjusting method thereof Download PDFInfo
- Publication number
- CN103826183A CN103826183A CN201410061605.1A CN201410061605A CN103826183A CN 103826183 A CN103826183 A CN 103826183A CN 201410061605 A CN201410061605 A CN 201410061605A CN 103826183 A CN103826183 A CN 103826183A
- Authority
- CN
- China
- Prior art keywords
- woofer
- frequency
- low
- dividing plate
- band
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Circuit For Audible Band Transducer (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
The invention relates to the technical field of electroacoustics, in particular to a band-pass type bass loudspeaker box and an adjusting method of the band-pass type bass loudspeaker box. The band-pass type bass loudspeaker box comprises a bass loudspeaker box body, wherein at least one horizontally-arranged partition plate is arranged in the bass loudspeaker box body, the partition plate is provided with at least one low-frequency loudspeaker, low-frequency resonators are arranged on the portions, above and below the partition plate, of the wall of the bass loudspeaker box body, and therefore the bass loudspeaker box body is divided into an upper low-frequency bass loudspeaker box body and a lower low-frequency bass loudspeaker box body. The bass loudspeaker box body is provided with voltage regulating bins, wherein the outer section of each low-frequency resonator is connected with the corresponding voltage regulating bin to form an acoustic resonance access, the voltage regulating bins are provided with damping holes, and sound absorption bodies are arranged in the voltage regulating bins. The number of the low-frequency loudspeakers and the combination mode of the low-frequency loudspeakers can be increased according to requirement of acoustic characteristics. The damping value and the Q value of the bass loudspeaker box are adjusted respectively by means of adjusting the total area of the damping holes and the sound absorption bodies. By means of the adjusting method, the low-frequency processing acoustic performance of the band-pass type bass loudspeaker box and the quality accuracy and the flexibility of the band-pass type bass loudspeaker box are improved. Since the band-pass type bass loudspeaker box is small in volume, cost can be reduced.
Description
Technical field
The present invention relates to electroacoustic techniques field, relate in particular to a kind of band general formula woofer and method of adjustment thereof.
Background technology
From sound box acoustic construction, so far, current audio amplifier acoustic construction application mainly contains closed and the large class of open type two to the back of the body chamber open type audio amplifier that nineteen twenty-four occurs, closed audio amplifier kind is less, mainly contains two kinds of air-cushion type and push-pull types.Open type audio amplifier kind is more, as inverted phase type, two-stage inverted phase type, empty cone formula, labyrinth type, band general formula, duct type, rear horn type, 1/4 wavelength loaded type, transmission line formula, the Cole formula etc. of pausing.
The common feature of open type audio amplifier, exactly by the resonance of case chamber air and resonator (being commonly referred to phase-reversing tube) being coupled take loud speaker as driving, to greatest extent speaker drive energy is become to case chamber resonant energy, to improve low-frequency sound pressure and to widen LF-response.The load that has strengthened the diaphragm of loudspeaker due to case chamber resonant energy, its vibrating diaphragm is suppressed at the significantly generation of vibration of resonance band (also claiming resonance frequency), thereby reduced loud speaker induced potential, made distortion reduction, the power that also therefore can improve woofer bears volume.
Wherein, it is a kind of audio amplifier of special disposal frequency acoustic technology with general formula audio amplifier, the mode that this audio amplifier changes has three kinds substantially: a kind of is that loud speaker is placed in the middle of a connected approximate closed audio amplifier and phase inverted cabinet, make face of the diaphragm of loudspeaker according to closed audio amplifier regular movement, another face of the diaphragm of loudspeaker is according to phase inverted cabinet regular movement, and this band general formula audio amplifier only has an opening box chamber, the second is the centre that loud speaker is placed in to two connected approximate phase inverted cabinets, there are two opening box chambers, the phase inverted cabinet case chamber of one of them approximate upper frequency utilizes the front (or back side) of the diaphragm of loudspeaker to drive, the phase inverted cabinet case chamber of another approximate lower frequency utilizes the back side (or positive) of the diaphragm of loudspeaker to drive, two case chambers are after resonator produces different resonance frequency stacks, its LF-response width is wide compared with the band-pass speaker of first kind of way, also wider than the frequency response width of inverted loudspeaker box and the processing of labyrinth type audio amplifier low frequency, the air mass streaming audio amplifier of BOES company of U.S. invention just belongs to this band general formula audio amplifier, the third is the band general formula audio amplifier with three opening box chambers, there is above-mentioned the opening box chamber that superposes again in the middle of two opening box chambers, difference is in these three opening box chambers, a loud speaker that electric property is identical of the each device in opening box chamber in two ends, the acoustic characteristic of two case chambers must be consistent, case chamber interior in the middle of two case chambers has certain one side of the corresponding diaphragm of loudspeaker of two case chamber loud speakers, and utilization drives sounding of the diaphragm of loudspeaker of case chamber, two ends, on casing baffle, be useful on the resonator of low-frequency resonance with case chamber, two ends one sampling device, this band general formula audio amplifier is because loud speaker doubles, the resonance space of processing low-frequency resonant has increased by 1/3rd, so, its low frequency efficiency and responsive bandwidth are more higher than aforementioned two kinds of band general formula audio amplifiers, also higher than closed audio amplifier and phase inverted cabinet etc., its shortcoming be need to be larger tank-volumes.
Although current band general formula audio amplifier comprehensive advantage on low frequency treatment technology is the most obvious, but still there are some defects in its acoustic construction: first, from acoustic construction, can regard current band general formula audio amplifier as one by case chamber resonance space, three sounding bodies that space is coupled such as tube chamber (resonator) resonance space and free harmonic vibration space (the outer space arbitrarily of casing), even if under the identical condition of atmospheric density, because the free space in three spaces is (as room, outdoor) volume can not artificially set, cause case cavity space volume to calculate according to certain set formula, consequently tank-volumes size that is case cavity space size variation underaction, greatly limit the range of application with general formula audio amplifier, as the recording of closely listening audio amplifier and special occasions to use the desktop of current popular, making monitor speaker is just difficult to band general formula audio amplifier larger current volume to bring up to desktop, the second, because it must calculate case chamber volume according to certain set formula, the processing of low frequency tone color is lacked and adjusts the means that change, thereby make its satisfied being restricted to audio amplifier low frequency tone color diversified demand, the 3rd, be exactly the limitation that also existence can not be less in the tank-volumes scale of construction, also there are some problems to the saving of human resource in this, the 4th, uncontrollable due to free space air pressure, also cause case chamber and the air pressure control of resonator cavity space limited, make diaphragm of loudspeaker vibration more fully in the air pressure coupling in case chamber, tube chamber, free harmonic vibration space how, it still lacks corresponding solution.
Summary of the invention
The problem to be solved in the present invention is that existing band general formula woofer tank-volumes is bigger than normal, casing air velocity uncontrollable, be difficult to meet the defect such as bass box tone color and acoustical power diversified demand thereof, a kind of band general formula woofer is provided, it has not only improved accuracy and the flexibility ratio of audio amplifier low frequency processing acoustical behavior and quality thereof, and audio amplifier volume can dwindle, escapable cost and resource.
The present invention also provides a kind of described method with general formula woofer of adjusting.
For achieving the above object, the technical solution used in the present invention is: a kind of band general formula woofer, it comprises woofer, in described woofer, there is at least one horizontally disposed dividing plate, described dividing plate is provided with at least one woofer, the woofer tank wall of described dividing plate top and below is provided with low-frequency resonator, described woofer is divided into the low frequency woofer of top and below; Described woofer is provided with pressure regulating chamber, and the outer cross section of described low-frequency resonator connects into an acoustic resonance path with described pressure regulating chamber respectively.
To being further improved to of technique scheme, the woofer tank wall of described dividing plate top is provided with compared with low-and high-frequency resonator, the woofer casing of dividing plate below is provided with lower low-frequency resonator, by described woofer be divided into top compared with the lower low frequency woofer of low-and high-frequency woofer and below.
To being further improved to of technique scheme, in described pressure regulating chamber, be provided with acoustic(al)absorbent, described pressure regulating chamber is provided with damping hole.
Preferably, described damping hole has multiple, and horizontal symmetrical is arranged on described pressure regulating chamber.
Preferably, described dividing plate quantity is one, and a woofer is set on described dividing plate, and compositing monomer formula band leads to woofer.
Preferably, described dividing plate quantity is one, equidirectional at least two woofers, the logical woofer of composition complex formula band of being set up in parallel on described dividing plate.
Preferably, described dividing plate quantity is one, and described dividing plate respectively arranges the woofer of a symmetrical reverse parallel connection up and down, the logical woofer of composition push-pull type band.
Preferably, described dividing plate quantity is one, the woofer of described dividing plate at least two pairs of upper and lower symmetrical reverse parallel connections setting up and down, the logical woofer of composition complex push-pull type band.
Preferably, in described woofer, be provided with the first dividing plate of level and be positioned at the second partition of the first dividing plate below, between described the first dividing plate and second partition, be provided with low frequency woofer, the tank wall of low frequency woofer is provided with more range low frequency resonator, described the first dividing plate top and described second partition bottom are respectively provided with laterally zygomorphic one or many woofers, the logical woofer of composition march-past band.
A kind ofly adjust the described method with general formula woofer damping size, that size by adjusting the damping hole total open area on described pressure regulating chamber realizes, damping hole total open area is larger, and the damping of whole acoustic path is less, and the viscosity of Air Flow is fewer; Damping hole total open area is less, and the damping of whole acoustic path is larger, and the viscosity of Air Flow is more.
Adjusting describedly with the big or small method of general formula woofer Q value, is that the volume size by adjusting acoustic(al)absorbent in described pressure regulating chamber realizes, and acoustic(al)absorbent volume is larger, and the Q value of audio amplifier is higher, and the viscosity of Air Flow is larger; Acoustic(al)absorbent volume is less, and the Q value of audio amplifier is lower, and the viscosity of Air Flow is less.
By the mutual coordination of damping and Q value, can realize the Air Flow viscosity optimization of the whole acoustic path of audio amplifier.
Band general formula woofer of the present invention, beneficial effect is compared to existing technology:
The present invention is mainly at multi-functional acoustics pressure regulating chamber of band general formula woofer opening part load, in pressure regulating chamber, be provided with some damping holes or device and have some sound-absorbing materials, form non-complete enclosure space, be equivalent to be provided with between the free space outside audio amplifier resonator and casing spatial transition or a medium-space that air is mutual, and utilize the status of its transition or intermediary, by self space is carried out the variation of damping characteristic or Q value characteristic or is integrated case chamber, sound coupled characteristic between tube chamber and free space, thereby form a kind of novel bass box acoustic construction, form the bass box that is different from current band-pass speaker with self acoustic characteristic.
On the one hand from variations such as mixing function, filter function, voltage regulation function and loudspeaker monomer model application, push-pull mode application, complex model application, apportion model applications, accuracy and the flexibility ratio of not only audio amplifier low frequency being processed to acoustical behavior and quality thereof increase, and under requiring, different designs make low frequency processing and control device have more flexibility, especially processing compared with small box low frequency, more current audio amplifier has more sensitivity and improves the application advantage that volume dwindles; Because it can adjust its space air pressure neatly, can, when the less audio amplifier of design volume under equal low frequency performance standard, material usage be can save on the other hand, production cost and social resources further saved.Therefore, to audio amplifier frequency acoustic, technical finesse has the promotion meaning of practical value and electroacoustic techniques development in the present invention.
Accompanying drawing explanation
Accompanying drawing 1 is the basic structure schematic diagram of embodiment of the present invention band general formula woofer;
Accompanying drawing 2 is the side structure schematic diagram of the logical woofer of the embodiment of the present invention 1 monomer-type band;
Accompanying drawing 3 is the side structure schematic diagram of the logical woofer of the embodiment of the present invention 2 push-pull type bands;
Accompanying drawing 4 is the side structure schematic diagram of the logical woofer of the embodiment of the present invention 3 complex formula bands;
Accompanying drawing 5 is the side structure schematic diagram of the logical woofer of the embodiment of the present invention 4 complex push-pull type bands;
Accompanying drawing 6 is the side structure schematic diagram of the logical woofer of the embodiment of the present invention 5 march-past bands;
Accompanying drawing 7 is the side structure schematic diagram of the logical woofer of the embodiment of the present invention 6 march-past complex bands;
Accompanying drawing 8 is the mixing effect schematic diagram of the embodiment of the present invention 1 monomer-type band general formula woofer;
Accompanying drawing 9 is the filter effect schematic diagram of the embodiment of the present invention 1 monomer-type band general formula woofer.
Wherein:
1, pressure regulating chamber; 11, damping hole; 12, acoustic(al)absorbent; 2, woofer; 21, dividing plate; 22, woofer; 23, compared with low-and high-frequency resonator; 24, lower low-frequency resonator; 25, compared with low-and high-frequency woofer; 26, low frequency woofer; 27, double woofer; 28, the first dividing plate; 29, second partition; 30, range low frequency resonator more; 31, low frequency woofer.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, the present invention is described in further detail.
With reference to Fig. 1, band general formula woofer of the present invention, that the cross section outside that resonator is set at woofer 2 loads a pressure regulating chamber 1 and forms, woofer 2 is provided with at least one horizontally disposed dividing plate 21, dividing plate 21 is provided with at least one woofer 22, the tank wall of dividing plate 21 tops is provided with compared with low-and high-frequency resonator 23, the tank wall of dividing plate 21 belows is provided with lower low-frequency resonator 24, thereby be divided into compared with low-and high-frequency woofer 25 and low frequency woofer 26 to major general's woofer 2, damping hole 11 is set on pressure regulating chamber 1, the interior acoustic(al)absorbent 12 that arranges of pressure regulating chamber 1, damping and the Q value of adjusting audio amplifier with this are big or small, and from mixing function, filter function, voltage regulation function and loudspeaker monomer model application, push-pull mode application, complex model application, the application of complex push-pull mode, apportion model application, the variations such as march-past complex model application, to adjusting with the acoustical behavior of logical bass box, increase the logical bass box tonequality of band and change the flexibility of adjusting.
Wherein, can also, according to other needs, adjust the compound mode of loud speaker, be not limited to combinations thereof.Be higher with respect to the frequency of low frequency woofer 26 compared with low-and high-frequency woofer 25, thereby be called compared with low-and high-frequency woofer.Be higher with respect to the frequency of lower low-frequency resonator 24 compared with low-and high-frequency resonator 23, thereby be called compared with low-and high-frequency resonator.But above-mentioned four is all low-frequency.
Embodiment 1:
With reference to Fig. 1, 2, band general formula woofer of the present invention, for the logical woofer of monomer-type band, be the basic structure of change application of the present invention, it comprises a woofer 2, in woofer 2, be provided with the dividing plate 21 of level, dividing plate 21 is provided with woofer 22, woofer 2 is divided into upper box and lower box by dividing plate 21, on the sidewall of upper box, be provided with compared with low-and high-frequency resonator 23, the corresponding sidewall of lower box is provided with lower low-frequency resonator 24, be positioned on same longitudinal axis compared with low-and high-frequency resonator 23 and lower low-frequency resonator 24, thereby woofer 2 is divided into higher-frequency woofer 25 by dividing plate 21 and compared with low frequency woofer 26.
Be provided with compared with low-and high-frequency resonator 23 and be connected pressure regulating chamber 1 with the outside, cross section of lower low-frequency resonator 24 at woofer 2, thereby connect into an acoustic resonance path with pressure regulating chamber 1 respectively compared with low-and high-frequency resonator 23 and the outer cross section of lower low-frequency resonator 24.Pressure regulating chamber 1 with compared with being respectively equipped with damping hole 11 on low-and high-frequency resonator 23 two sidewalls adjacent with lower low-frequency resonator 24, on damping hole 11, have multiple, and bilateral symmetry setting.In pressure regulating chamber 1, be also provided with acoustic(al)absorbent 12, acoustic(al)absorbent 12 is attached to the pressure regulating chamber corresponding with resonator 1 chamber wall.
The present embodiment is under the basic acoustic construction described in Fig. 1, installs the logical woofer of monomer-type loaded ribbon that a woofer 22 forms on dividing plate 21.
Embodiment 2:
With reference to Fig. 3, band general formula woofer of the present invention, for Fig. 1, described in 2, with general formula woofer changes, raw push-pull type band leads to woofer, it comprises a woofer 2, in woofer 2, be provided with the dividing plate 21 of level, dividing plate 21 is provided with woofer 22 above, dividing plate 21 bottoms be provided with electric property identical with woofer 22 but act as supercharging double woofer 27, woofer 2 is divided into upper box and lower box by dividing plate 21, on the sidewall of upper box, be provided with compared with low-and high-frequency resonator 23, the corresponding sidewall of lower box is provided with lower low-frequency resonator 24, be positioned on same longitudinal axis compared with low-and high-frequency resonator 23 and lower low-frequency resonator 24, thereby woofer 2 is divided into higher-frequency woofer 25 by dividing plate 21 and compared with low frequency woofer 26.
Be provided with compared with low-and high-frequency resonator 23 and be connected pressure regulating chamber 1 with the outside, cross section of lower low-frequency resonator 24 at woofer 2, thereby connect into an acoustic resonance path with pressure regulating chamber 1 respectively compared with low-and high-frequency resonator 23 and the outer cross section of lower low-frequency resonator 24.Pressure regulating chamber 1 with compared with being respectively equipped with damping hole 11 on low-and high-frequency resonator 23 two sidewalls adjacent with lower low-frequency resonator 24, on damping hole 11, have multiple, and bilateral symmetry setting.In pressure regulating chamber 1, be also provided with acoustic(al)absorbent 12, acoustic(al)absorbent 12 is attached to the pressure regulating chamber corresponding with resonator 1 chamber wall.
The present embodiment is under basic acoustic construction prerequisite described in embodiment 1, lower device woofer 22 and the woofer that doubles two reverse parallel connections such as woofer 27 grades on dividing plate 21, make two loud speakers form push-pull type motion, thus under the vibration area prerequisite identical with monomer, make oscillating mass multiplication, and then speaker drive energy is doubled, impel case cavity space acoustic voiume demultiplication under the identical prerequisite of performance of similar structures, thereby reach the object of dwindling bass box volume, form the logical woofer of push-pull type band.
Embodiment 3:
With reference to Fig. 4, band general formula woofer of the present invention, for Fig. 1, described in 2, basic structure is that monomer-type loaded ribbon general formula woofer changes and the raw logical woofer of complex formula band from embodiment 1, it comprises a woofer 2, in woofer 2, be provided with the dividing plate 21 of level, dividing plate 21 is provided with at least two above, can be many woofers 22 arranged side by side, woofer 2 is divided into upper box and lower box by dividing plate 21, on the sidewall of upper box, be provided with compared with low-and high-frequency resonator 23, the corresponding sidewall of lower box is provided with lower low-frequency resonator 24, be positioned on same longitudinal axis compared with low-and high-frequency resonator 23 and low-frequency resonator 24, thereby woofer 2 is divided into higher-frequency woofer 25 by dividing plate 21 and compared with low frequency woofer 26.
Be provided with compared with low-and high-frequency resonator 23 and be connected pressure regulating chamber 1 with the outside, cross section of lower low-frequency resonator 24 at woofer 2, thereby connect into an acoustic resonance path with pressure regulating chamber 1 respectively compared with low-and high-frequency resonator 23 and the outer cross section of lower low-frequency resonator 24.Pressure regulating chamber 1 with compared with being respectively equipped with damping hole 11 on low-and high-frequency resonator 23 two sidewalls adjacent with lower low-frequency resonator 24, on damping hole 11, have multiple, and bilateral symmetry setting.In pressure regulating chamber 1, be also provided with acoustic(al)absorbent 12, acoustic(al)absorbent 12 is attached to the pressure regulating chamber corresponding with resonator 1 chamber wall.
The present embodiment is the change application on embodiment 1 basis, i.e. many woofers 22 in parallel in the same way on dividing plate 21, its vibration area is doubled compared with monomer-type, simultaneously by audio amplifier volume multiplication, expand bass box volume to improve acoustic pressure be the logical woofer of complex formula band that many loud speakers that the object of sensitivity forms move simultaneously thereby reach.
Embodiment 4:
With reference to Fig. 5, band general formula woofer of the present invention, with Fig. 1, described in 2, be with general formula woofer structure for basis, change and the raw logical woofer of complex push-pull type band from embodiment 2, it comprises a woofer 2, in woofer 2, be provided with the dividing plate 21 of level, dividing plate 21 is provided with at least two above, can be many woofers 22 arranged side by side, dividing plate 21 upper bottom portion are provided with at least two, can be many with woofer Shang Xia 22 symmetrical reverse parallel connection and quantity identical double woofer 27, it is identical with woofer 22 electric properties but act as supercharging.
Be provided with compared with low-and high-frequency resonator 23 and be connected pressure regulating chamber 1 with the outside, cross section of lower low-frequency resonator 24 at woofer 2, thereby connect into an acoustic resonance path with pressure regulating chamber 1 respectively compared with low-and high-frequency resonator 23 and the outer cross section of lower low-frequency resonator 24.Pressure regulating chamber 1 with compared with being respectively equipped with damping hole 11 on low-and high-frequency resonator 23 two sidewalls adjacent with lower low-frequency resonator 24, on damping hole 11, have multiple, and bilateral symmetry setting.In pressure regulating chamber 1, be also provided with acoustic(al)absorbent 12, acoustic(al)absorbent 12 is attached to the pressure regulating chamber corresponding with resonator 1 chamber wall.
The present embodiment is take the basic acoustic construction of embodiment 1 as basis, from a kind of mode of embodiment 2 change application, on dividing plate 21 two (comprising two) above woofers 22 of lower device with more than two (comprising two), double many woofers 22 that symmetrical reverse is in parallel such as woofer 27, make dividing plate 21 up and down many symmetrical loud speakers form connatural push-pull type motion simultaneously, thus under the vibration area prerequisite identical with monomer, make oscillating mass change multiplication with loud speaker plural number, and then make speaker drive energy also change multiplication by loud speaker plural number, form the logical woofer of complex push-pull type band.
Embodiment 5:
With reference to Fig. 6, band general formula woofer of the present invention, remain take embodiment 1 as basic acoustic construction, and change application and the raw logical woofer of a kind of march-past band based on this, it comprises a woofer 2, in woofer 2, be provided with the first dividing plate 28 and the second partition 29 of level, the first dividing plate 28 is located at the top of second partition 29, thereby it is upper box that woofer 2 is divided into three spaces, lower box and middle casing, the first dividing plate 28 tops and second partition 29 bottoms are respectively provided with upper and lower two symmetrical woofers 22, on the sidewall of upper box and lower box, be respectively provided with the resonator 23 frequently of fighting it out, the corresponding sidewall of middle casing is provided with more range low frequency resonator 30, compared with low-and high-frequency resonator 23 and more range low frequency resonator 30 be positioned on same longitudinal axis, the first dividing plate 28 and second partition 29 are divided into two compared with low-and high-frequency woofer 25 and a low frequency woofer 31 by woofer 2.Wherein, more range low frequency resonator 30 is lower with respect to the frequency band resonance compared with low-and high-frequency resonator 23 and embodiment 1,2,3,4 lower low-frequency resonator 24, thereby is called more range low frequency resonator; Equally, low frequency woofer 31 is lower with respect to the frequency band resonance compared with low-and high-frequency woofer 25 and embodiment 1,2,3,4 low frequency woofers 26, thereby is called lower low frequency woofer.
Woofer 2 be provided with compared with low-and high-frequency resonator 23 and more the cross section outside of range low frequency resonator 30 connect pressure regulating chamber 1, thereby compared with low-and high-frequency resonator 23 and the outer cross section of range low frequency resonator 30 connect into an acoustic resonance path with pressure regulating chamber 1 respectively.Pressure regulating chamber 1 be respectively equipped with damping hole 11 compared with on low-and high-frequency resonator 23 and two sidewalls that more range low frequency resonator 30 is adjacent, on damping hole 11, have multiple, and bilateral symmetry setting.In pressure regulating chamber 1, be also provided with acoustic(al)absorbent 12, acoustic(al)absorbent 12 is attached to the pressure regulating chamber corresponding with resonator 1 chamber wall.
The present embodiment is on embodiment 1 architecture basics, comprehensive embodiment 2, make to increase the change application mode of a low frequency woofer 31, in utilization, the woofer 22 of lower device is made reverse parallel connection, make it to form push-pull type motion, and between add and put one by the audio amplifier in centre position and low frequency woofer 31 that more range low frequency resonator 30 forms, make the two sides of its diaphragm of loudspeaker all produce air driven effect, so, will exceed more than 1 times compared with embodiment 2 its air driven areas, it also improves more than 1 times compared with the efficiency of embodiment 2; Because it is positioned at middle audio amplifier space by upper and lower two speaker drive, large more than 1 times compared with the air driven energy of embodiment 2, just give the more low-frequency minimum design of range low frequency resonator 30 condition of larger displacement is downwards provided, extended lower performance thereby the present embodiment is had compared with embodiment 2 low frequencies.
The present embodiment is distinguished array in the two ends up and down of low frequency woofer 31 by two identical low frequency woofers of performance, and the function of shared pressure regulating chamber 1, forms the logical woofer of march-past band.
Embodiment 6:
With reference to Fig. 7, take the structure of embodiment 5 as basis, under the substantially constant prerequisite of its structure, the woofer 22 of device on the first dividing plate 28 and second partition 29 is made to multiple and increase processing, being applied on low frequency efficiency of embodiment 5 can be significantly improved, also form march-past complex loaded ribbon general formula woofer with this.
Band general formula audio amplifier sounding is mainly resonatron, and the frequency of resonator is exactly audio amplifier frequency.
Wherein, described in above-mentioned four embodiment:
The lowest resonance frequency of woofer 22 is: 30Hz ~ 70Hz
Compared with the frequency range of low-and high-frequency resonator 23 be: 80Hz ~ 150Hz
The frequency range of lower low-frequency resonator 24 is: 30Hz ~ 80Hz
More the frequency range of range low frequency resonator 30 is: 10Hz ~ 30Hz
With reference to Fig. 8, take monomer-type band general formula woofer as example, demonstrate mixing enlarging function of the present invention, wherein, the acoustic wave segment that woofer 22 vibrates produces resonance or conduction via high-frequency resonator 23 and range low frequency resonator 24 and enters Multifunction pressure storehouse 1 and produce again resonance to amplify after vibrational energy by damping hole 11 to external radiation with the Air Coupling of this pressure regulating chamber 1 again.
With reference to Fig. 9, take monomer-type band general formula woofer as example, demonstrate filter function of the present invention, wherein, the component frequency that woofer 22 vibrates especially frequency more than 150Hz after high-frequency bass box 25 and low frequency bass box 26 filter, also have component frequency response to leak into Multifunction pressure storehouse 1 by upper frequency resonator 23 and lower frequency resonator 24, and the sound wave that leaks into Multifunction pressure storehouse 1 part is by pressure regulating chamber filtering again, thereby make the more existing band general formula of low-frequency component ratio audio amplifier larger.
Band general formula woofer in above embodiment, above all embodiment, all can be by adjusting the total area of damping hole 11 or by adjusting the volume of acoustic(al)absorbent 12, adjusting damping and the Q value of audio amplifier of the present invention.Wherein, the total area of damping hole 11 is larger, and the damping value of audio amplifier is less, and the viscosity of Air Flow is fewer, and impulse response transient state is faster; Otherwise damping value is larger, the viscosity of Air Flow is more, and impulse response transient state is slower; The volume of acoustic(al)absorbent 12 is larger, and the Q value of audio amplifier is larger, and the viscosity of Air Flow is larger, stronger to loud speaker counter power; Otherwise Q value is less, the viscosity of Air Flow is less, more weak to loud speaker counter power; Make full use of the adjustable physical condition of damping of the present invention and Q value, the proportioning of damping and Q value can be set to an integrated value through optimizing, so can make whole low frequency channel, comprise the fully resonance such as loud speaker, resonator, audio amplifier, the performance and the quality that improve bass box are all beneficial to.
The present invention is mainly at multi-functional acoustics pressure regulating chamber of band general formula woofer opening part (cross section outside resonator) load, pressure regulating chamber is provided with some damping holes or device has acoustic(al)absorbent, form non-complete enclosure space, be equivalent to be provided with between the free space outside audio amplifier low-frequency resonator and casing cushion space or a medium-space that air is mutual, and utilize the air fluid mechanics special status of its buffering or intermediary, integrate case chamber by the variation adjustment of self space being carried out to damping characteristic or Q value characteristic, sound coupled relation between tube chamber and free space, thereby form the adjustable band general formula woofer acoustic construction of a kind of novel bass tone color, form the current low frequency audio amplifier treatment technology with general formula woofer that is different from self acoustic characteristic.
The basic principle of application of the present invention:
1, be one and unite two into one the woofer of (even closing three is) compared with low-and high-frequency audio amplifier and low frequency audio amplifier (comprising low frequency audio amplifier);
2, use loud speaker that electric property is identical as resonant drive compared with low-and high-frequency audio amplifier and low frequency audio amplifier (comprising low frequency audio amplifier);
3, for the speaker unit of resonant drive at the dividing plate that will separate compared with low-and high-frequency audio amplifier and low frequency audio amplifier (comprising low frequency audio amplifier);
4, be to be formed by the difference of different separately resonant frequency point values and tank-volumes and resonator catheter length (comprising diameter) ratio compared with low-and high-frequency audio amplifier and the different resonant frequency range of low frequency audio amplifier (comprising low frequency audio amplifier);
Relatively high one section of frequency response of 5, sending by the coupling of resonatron and pressure regulating chamber compared with low-and high-frequency audio amplifier and low frequency audio amplifier (comprising low frequency audio amplifier) are mixed into the LF-response of a section wider compared with other acoustic construction audio amplifier low-frequency ranges by the one section of relatively low frequency response of sending that is coupled of resonatron and pressure regulating chamber at pressure regulating chamber;
6, dividing plate can install a woofer unit, two woofer unit, 3 woofer unit, 4 ... and even N woofer unit;
7, when every device even number loudspeaker unit, must carry out reverse parallel connection processing, make the direction of motion of vibrating diaphragm consistent;
8, when every device odd number loudspeaker unit, must carry out forward parallel processing, make the signal time difference of loudspeaker unit vibration consistent.
The key of the technology of the present invention is that the pressure regulating chamber of institute's load carries out damping adjustment and the adjustment of Q value:
First, between the resonator of audio amplifier (being also referred to as phase-reversing tube, sound guide tube, conduit) and loud speaker, there is air-flow antagonism vibration relation.Must be through narrow and small resonator opening when the diaphragm of loudspeaker moves outside air propelling movement or inside inspiration air-flow, in the time that the air-flow pressure of its propelling movement or inspiration reaches certain intensity, narrow and small resonator opening is because of self scale of construction restriction, smooth propelling movement or the inspiration of air-flow are suppressed, cause the delay of some frequency vibration ripple air-flow of loud speaker at resonator opening part, when this postpones while just in time causing loudspeaker vibration airflow direction contrary with resonator airflow direction (as while loud speaker pushes the outside and resonator inspiration air-flow of air-flow inwards or on the contrary), the air column of the resonator vibration sounding that will be excited, resonator aperture area more longer its of pipe with small pipe diameter loudspeaker vibration is pushed or the air damping of inspiration just larger, the reverse Frequency point of the air-flow that produces just lower, the frequency of vibration sounding of being excited is also just lower.Conventionally, as only having a Frequency point generation air-flow antagonism, inverted phase type, labyrinth type, duct type etc. vibrate relation with the audio amplifier beyond general formula bass box, that is exactly the lowest resonance frequency of loud speaker, because in similar acoustic construction audio amplifier, loud speaker only has this frequency to produce peak swing, cause larger atmospheric pressure, force resonator air column because of air-flow reversal of vibrations sounding.So, every audio amplifier that utilizes loud speaker lowest resonance frequency to force resonator sounding, the peak swing when air acting in opposition of resonator can suppress loud speaker lowest resonance frequency, is conducive to the buffering of loud speaker change in resistance; And make it have some Frequency points but not the air-flow antagonism vibration relation of some Frequency points with the special construction of general formula bass box, be almost that all Frequency points between lower frequency to upper frequency all produce this air-flow antagonism vibration relation, also can say that band general formula bass box is close to completely by this relation to allow resonator sounding.Other audio amplifiers are the resonance of a Frequency point, are the resonance of a frequency band with general formula audio amplifier.In this principle, multi-functional acoustics pressure regulating chamber of load, in the time that pressure regulating chamber self increases damping, will increase the weight of the damping of resonator or increase the Q value of whole acoustic path, also strengthened the air viscosity of whole acoustic path simultaneously, force resonator to produce the reverse Frequency point of air-flow and be shifted downwards, the application of this principle makes the present invention lower compared with the frequency response of normal tape general formula woofer; Because this Multifunction pressure storehouse is also a resonance space, its low-frequency resonant entire area is greater than the low-frequency resonant area of normal tape general formula woofer, so the efficiency of its bass processing wants high compared with normal tape general formula woofer; Again because pressure regulating chamber has played filter action again outward at resonator, so its low frequency tonequality is purer compared with normal tape general formula woofer.
Secondly, one aspect of the present invention is from variations such as mixing function, filter function, voltage regulation function and loudspeaker monomer model application, push-pull mode application, complex model application, the application of complex push-pull mode, apportion model applications, accuracy and the flexibility ratio of not only audio amplifier low frequency being processed to acoustical behavior and quality thereof increase, and under requiring, different designs make low frequency processing and control device have more flexibility, especially processing compared with small box low frequency, more currently having more with general formula woofer that bass efficiency improves or the application advantage that dwindles of volume; Because it can adjust its air pressure and flow velocity neatly, the less audio amplifier of design volume under equal low frequency performance standard, can save material usage, further saves production cost and social resources on the other hand.Therefore, to audio amplifier frequency acoustic, technical finesse has the promotion meaning of practical value and electroacoustic techniques development in the present invention.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (10)
1. a band general formula woofer, it is characterized in that: comprise woofer (2), in described woofer (2), there is at least one horizontally disposed dividing plate (21), described dividing plate (21) is provided with at least one woofer (22), woofer (2) tank wall of described dividing plate (21) top and below is provided with low-frequency resonator, described woofer (2) is divided into the low frequency woofer of top and below; Described woofer (2) is provided with pressure regulating chamber (1), and the outer cross section of described low-frequency resonator connects into an acoustic resonance path with described pressure regulating chamber (1) respectively.
2. be with according to claim 1 general formula woofer, it is characterized in that: woofer (2) tank wall of described dividing plate (21) top is provided with compared with low-and high-frequency resonator (23), woofer (2) casing of dividing plate (21) below is provided with lower low-frequency resonator (24), by described woofer (2) be divided into top compared with the low frequency woofer (26) of low-and high-frequency woofer (25) and below.
3. be with general formula woofer according to described in claim 1 any one, it is characterized in that: in described pressure regulating chamber (1), be provided with acoustic(al)absorbent (12), described pressure regulating chamber (1) is provided with damping hole (11).
4. be with according to claim 3 general formula woofer, it is characterized in that: described damping hole (11) has multiple, horizontal symmetrical is arranged on described pressure regulating chamber (1).
5. be with general formula woofer according to described in claim 1 ~ 3 any one, it is characterized in that: described dividing plate quantity is one, a woofer (22) is set on dividing plate (21), compositing monomer formula band leads to woofer.
6. be with general formula woofer according to described in claim 1 ~ 3 any one, it is characterized in that: described dividing plate quantity is one, upper equidirectional at least two woofers (22) that are set up in parallel of described dividing plate (21), the logical woofer of composition complex formula band.
7. be with general formula woofer according to described in claim 1 ~ 3 any one, it is characterized in that: described dividing plate quantity is one, described dividing plate (21) respectively arranges the woofer of a symmetrical reverse parallel connection up and down, the logical woofer of composition push-pull type band.
8. be with general formula woofer according to described in claim 1 ~ 3 any one, it is characterized in that: described dividing plate quantity is one, the woofer of described dividing plate (21) at least two pairs of upper and lower symmetrical reverse parallel connections setting up and down, the logical woofer of composition complex push-pull type band.
9. be with general formula woofer according to described in claim 1 ~ 3 any one, it is characterized in that: in described woofer (2), be provided with first dividing plate (28) of level and be positioned at the second partition (29) of the first dividing plate (28) below, between described the first dividing plate (28) and second partition (29), be provided with low frequency woofer (31), the tank wall of low frequency woofer (31) is provided with more range low frequency resonator (30), described the first dividing plate (28) top and described second partition (29) bottom are respectively provided with laterally zygomorphic one or many woofers (22), the logical woofer of composition march-past band.
10. adjust the method with general formula woofer described in claim 3 for one kind, it is characterized in that: by adjusting the size of damping hole (11) total open area on described pressure regulating chamber (1), or by adjusting the size of the volume of acoustic(al)absorbent (12) in described pressure regulating chamber, i.e. the damping size of audio amplifier or Q value size described in capable of regulating; Wherein, damping hole (11) total open area is larger, and this audio amplifier damping is less, and air movement flow velocity viscosity reduces; In pressure regulating chamber, the volume of acoustic(al)absorbent (12) is larger, and this audio amplifier Q value is larger, and air movement flow velocity viscosity increases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410061605.1A CN103826183B (en) | 2014-02-24 | 2014-02-24 | A kind of band general formula woofer and its method of adjustment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410061605.1A CN103826183B (en) | 2014-02-24 | 2014-02-24 | A kind of band general formula woofer and its method of adjustment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103826183A true CN103826183A (en) | 2014-05-28 |
| CN103826183B CN103826183B (en) | 2019-07-26 |
Family
ID=50760967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410061605.1A Expired - Fee Related CN103826183B (en) | 2014-02-24 | 2014-02-24 | A kind of band general formula woofer and its method of adjustment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103826183B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106034270A (en) * | 2015-03-19 | 2016-10-19 | 深圳纽斯声学系统有限公司 | closed multiple-cavity type low-pitch sound box and television set with the built-in low-pitch sound box |
| CN106303808A (en) * | 2016-10-19 | 2017-01-04 | 李齐车 | A kind of resonatron superposition woofer and coaxial bugle three frequency division superposition audio amplifier |
| WO2018006552A1 (en) * | 2016-07-07 | 2018-01-11 | 歌尔股份有限公司 | Double-speaker unit module and design method thereof, and electronic device |
| CN107948868A (en) * | 2018-01-09 | 2018-04-20 | 张晓冬 | Intelligent high in the clouds car audio system |
| EP3678383A1 (en) * | 2019-01-03 | 2020-07-08 | Samsung Electronics Co., Ltd. | Electronic apparatus |
| CN112116901A (en) * | 2020-09-18 | 2020-12-22 | 北京市燃气集团有限责任公司 | Method for improving acoustic subjective evaluation index of medium-low pressure gas pressure regulating tank |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5092424A (en) * | 1990-12-03 | 1992-03-03 | Bose Corporation | Electroacoustical transducing with at least three cascaded subchambers |
| CN2254258Y (en) * | 1995-03-23 | 1997-05-14 | 广州市荔湾区领先音响实业公司 | Audio amplifier |
| CN1158688A (en) * | 1994-08-23 | 1997-09-03 | 不列颠尼亚投资有限公司 | Bandpass woofer and method |
| CN1408194A (en) * | 2000-02-17 | 2003-04-02 | 美国技术公司 | Acoustically asymmetric bandpass loudspeaker with multiple acoustic filters |
| CN1585563A (en) * | 2003-08-23 | 2005-02-23 | 魏援 | Technology for loudspeaker box for reducing standing-wave, having no resonant peaks and zero capacity and high fidelity and differential tuning and matching |
| CN203761568U (en) * | 2014-02-24 | 2014-08-06 | 东莞凤合凰电声科技有限公司 | Band-pass type low pitch sound box |
-
2014
- 2014-02-24 CN CN201410061605.1A patent/CN103826183B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5092424A (en) * | 1990-12-03 | 1992-03-03 | Bose Corporation | Electroacoustical transducing with at least three cascaded subchambers |
| CN1158688A (en) * | 1994-08-23 | 1997-09-03 | 不列颠尼亚投资有限公司 | Bandpass woofer and method |
| CN2254258Y (en) * | 1995-03-23 | 1997-05-14 | 广州市荔湾区领先音响实业公司 | Audio amplifier |
| CN1408194A (en) * | 2000-02-17 | 2003-04-02 | 美国技术公司 | Acoustically asymmetric bandpass loudspeaker with multiple acoustic filters |
| CN1585563A (en) * | 2003-08-23 | 2005-02-23 | 魏援 | Technology for loudspeaker box for reducing standing-wave, having no resonant peaks and zero capacity and high fidelity and differential tuning and matching |
| CN203761568U (en) * | 2014-02-24 | 2014-08-06 | 东莞凤合凰电声科技有限公司 | Band-pass type low pitch sound box |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106034270A (en) * | 2015-03-19 | 2016-10-19 | 深圳纽斯声学系统有限公司 | closed multiple-cavity type low-pitch sound box and television set with the built-in low-pitch sound box |
| WO2018006552A1 (en) * | 2016-07-07 | 2018-01-11 | 歌尔股份有限公司 | Double-speaker unit module and design method thereof, and electronic device |
| CN106303808A (en) * | 2016-10-19 | 2017-01-04 | 李齐车 | A kind of resonatron superposition woofer and coaxial bugle three frequency division superposition audio amplifier |
| CN106303808B (en) * | 2016-10-19 | 2018-10-02 | 李齐车 | A kind of resonatron superposition woofer and coaxial bugle three frequency division are superimposed speaker |
| CN107948868A (en) * | 2018-01-09 | 2018-04-20 | 张晓冬 | Intelligent high in the clouds car audio system |
| EP3678383A1 (en) * | 2019-01-03 | 2020-07-08 | Samsung Electronics Co., Ltd. | Electronic apparatus |
| KR20200084514A (en) * | 2019-01-03 | 2020-07-13 | 삼성전자주식회사 | Electronic apparatus |
| US11051098B2 (en) | 2019-01-03 | 2021-06-29 | Samsung Electronics Co., Ltd. | Electronic apparatus |
| KR102581285B1 (en) * | 2019-01-03 | 2023-09-22 | 삼성전자주식회사 | Electronic apparatus |
| CN112116901A (en) * | 2020-09-18 | 2020-12-22 | 北京市燃气集团有限责任公司 | Method for improving acoustic subjective evaluation index of medium-low pressure gas pressure regulating tank |
| CN112116901B (en) * | 2020-09-18 | 2024-03-05 | 北京市燃气集团有限责任公司 | Method for improving acoustic subjective evaluation index of medium-low pressure gas pressure regulating tank |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103826183B (en) | 2019-07-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103826183A (en) | Band-pass type bass loudspeaker box and adjusting method thereof | |
| US9848259B2 (en) | Loudspeaker | |
| CN204377095U (en) | The anti-type earphone of dipole height radiation | |
| US5875255A (en) | High power electroacoustic speaker system having wide band frequency response | |
| US6431309B1 (en) | Loudspeaker system | |
| JPS6360599B2 (en) | ||
| US20110176701A1 (en) | Autoaugmented Speaker Port | |
| US2694463A (en) | Acoustic system for loud-speakers | |
| CN208210250U (en) | Earphone | |
| CN204482015U (en) | The anti-type speaker system of high radiation | |
| CN203761568U (en) | Band-pass type low pitch sound box | |
| CN203574851U (en) | Loudspeaker module | |
| CN102547518B (en) | A kind of six rank band-pass speaker and television sets | |
| CN103079155B (en) | Double-basin-frame combined type loudspeaker system with precise ring-shaped pipe composite channel group | |
| CN203057482U (en) | Active double-membrane resonance one-piece voice box 2.1 | |
| CN104754439A (en) | Low-frequency good-function receiver | |
| CN216057474U (en) | Speaker device and electronic apparatus | |
| CN207124717U (en) | A kind of two-sided extrusion formula passive sound box | |
| CN102630066B (en) | Eight-order band-pass speaker box and television | |
| WO2020168729A1 (en) | Loudspeaker system | |
| CN202374362U (en) | Triple-track integrated sound bar matched with television | |
| JP6277314B1 (en) | Speaker device | |
| CN205946113U (en) | Active speaker | |
| CN2410836Y (en) | Box structure of overweight low voice loudspeaker box | |
| CN103067814B (en) | Combined-type loudspeaker system with front precise-annular-tube compound channel and rear precise-annular-tube single compound channel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190726 Termination date: 20200224 |