CN203734819U - Spherically symmetrical push-pull type ultra-high-fidelity sound box - Google Patents
Spherically symmetrical push-pull type ultra-high-fidelity sound box Download PDFInfo
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- CN203734819U CN203734819U CN201420107640.8U CN201420107640U CN203734819U CN 203734819 U CN203734819 U CN 203734819U CN 201420107640 U CN201420107640 U CN 201420107640U CN 203734819 U CN203734819 U CN 203734819U
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Abstract
The utility model discloses a spherically symmetrical push-pull type ultra-high-fidelity sound box, by which audio alternating current outputted by a sound amplifier is converted into sound in a low-cost, high-efficiency and high-fidelity way. An internal cavity of a bass chamber of the sound box has a hollow spherical curved-surface structure, and two installing holes are arranged on the symmetrical positions of front and reverse surfaces or left and right side surfaces of the internal cavity. Two bass loudspeakers, which are identical in model number and similar in parameters, are respectively installed in the installing holes. The two bass loudspeakers are accessed to a bass output circuit of a frequency divider in an anti-phase way, and a spherically symmetrical push-pull type resonant cavity is formed by the two bass loudspeakers and the bass chamber. Mutual push-pull of vibrating diaphragms of the two bass loudspeakers in the vibration and sound generation process is utilized so that sound energy generated by the reverse surface of the vibrating diaphragms of each loudspeaker can be timely converted into sound energy generated by the front surface of the vibrating diaphragms of the other loudspeaker and is mutually overlapped with sound energy generated by the front surface of the vibrating diaphragms of the other loudspeaker, and thus the sound wave resonance amplification effect is formed. Therefore, pure stereo which has no noise pollution or noise, and is accurate in acoustic image positioning and ultra-high-fidelity is acquired.
Description
Technical field
The utility model relates to a kind of audio amplifier, particularly a kind of bass distortion little, recommend resonant audio amplifier.
Background technology
Audio amplifier of the prior art is roughly divided into closed audio amplifier, phase inverted cabinet and transmission line audio amplifier.
Closed audio amplifier:
Be that loudspeaker unit is arranged on a complete airtight casing, be characterized in solving preferably positive sound wave from the diaphragm of loudspeaker to previous irradiation and vibrating diaphragm " acoustic short circuit " problem that the anti-phase sound wave of radiation is cancelled out each other backward.
Phase inverted cabinet:
On the basis of closed audio amplifier, to have set up one section of phase-reversing tube, be characterized in making woofer vibrating diaphragm backward the anti-phase sound wave of radiation after paraphase, mutually superpose with the positive sound wave of vibrating diaphragm to previous irradiation, reach the effect that strengthens LF-response.
Transmission line audio amplifier:
Be after woofer unit, to be connected to a long conduit, conduit is folded to box house conventionally, utilizes the transmission line of 1/4 wavelength to reach absorptive unit resonance, suppresses vibrating diaphragm displacement, expands the objects such as low-frequency minimum.Transmission line audio amplifier is compared with the design of closed audio amplifier and phase inverted cabinet, has more deep bass.
The comparison of above-mentioned three kinds of audio amplifiers:
Closed audio amplifier is because the air being enclosed in casing forms powerful " air spring ", make the low-frequency minimum of audio amplifier integral body increase to some extent under free space condition than loudspeaker unit, compare with the design of phase inverted cabinet, transmission line audio amplifier, the LF-response characteristic of closed audio amplifier is poor.And the diaphragm of loudspeaker backward acoustic energy of the anti-phase sound wave of radiation can not get effective utilization, also cause the efficiency step-down of audio amplifier.
Phase inverted cabinet is except design, debugging are than closed audio amplifier difficulty, and the paraphase mouth of pipe rapidly mobile air easily causes pneumatic noise.In addition, inverting function utilizes acoustic resonance principle to reach in essence, thereby poor by the sound wave transient response characteristic of paraphase mouth of pipe radiation.The paraphase sound wave of phase inverted cabinet is not merely by the acoustic reflection at the diaphragm of loudspeaker back side out, but air in semi-hermetic casing is forced to after compression, produces resonance and the sound wave that sends in some frequency range.Therefore, paraphase sound wave, from the air in phase-reversing tube rather than vibrating diaphragm, may not accomplished the harmony stack of Complete Synchronization, thereby form a kind of casing noise that cannot eliminate to the positive sound wave of previous irradiation with the diaphragm of loudspeaker.
Thereby transmission line audio amplifier except at aspects such as design, making, debugging than phase inverted cabinet more complicated making audio amplifier manufacturing cost increases, the people such as Britain famous audio amplifier expert Martin Colloms more think, more difficult the avoiding of transmission line audio amplifier dyed because of the sound that transmission line resonance causes.
In fact, no matter be phase inverted cabinet or transmission line audio amplifier, the anti-phase sound wave that all diaphragm of loudspeaker back side can not be sent shields completely.And although closed audio amplifier can shield the anti-phase sound wave that send at the diaphragm of loudspeaker back side completely, but cannot eliminate the low-frequency range distortion that " air spring " causes, and the anti-phase sound wave that send at the diaphragm of loudspeaker back side can not get effectively utilizing the low conversion efficiency causing at all.Therefore, this quasi-tradition audio amplifier all inevitably causes certain poor efficiency, sound coloration, " acoustic short circuit " distortion, and the sound that they send not is pure loudspeaker sound, but has added to some extent some non-sound source compositions.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of electricity of the audible communication by sound amplifier output low cost, high efficiency, with high fidelity converts the electrical devices of sound to, and this device is a kind of super Hi-Fi sound-box that can truly reduce music scene.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:
The super Hi-Fi sound-box of ball symmetrical push-pull of the present utility model, comprise casing and be arranged at the indoor high, medium and low sound loud speaker of diaphone in casing, the indoor chamber of bass of this audio amplifier is hollow ball shape curved-surface structure, and at it just, offer two installing holes in the symmetric position of the back of the body two sides or left and right side, two woofers that model is identical, parameter is approaching are respectively charged in this installing hole, and the bass output circuit of two anti-phase access frequency dividers of woofer also forms ball symmetry and recommends resonant cavity together with described low tone chamber.
The inner chamber of described low tone chamber is formed by foamed pearlite pouring concrete, or is formed by whole Carving Machining such as timber, stone materials.
Described casing is the casing of two divided-frequency bookshelf-type audio amplifier or the casing of the two bass ground sound box of three frequency division or the casing that is superposed to sound column formula audio amplifier by low tone chamber described in several.
The profile of described casing, both can be cuboid prismatic, also can be spherical in shape, egg type, square body or Eight Diagrams body.
Described casing is made by timber, glued board, metal, pottery, glass, plastics, stone material or concrete.
Compared with prior art, the utility model is according to the physics principle in acoustic resonance chamber, the inner chamber of Jiang Di tone chamber is designed to hollow ball shape curved-surface structure, Bing Di tone chamber just, output two woofer installing holes in the symmetric position of the back of the body two sides or left and right side, by the bass output circuit of two symmetrical installations of the woofer that model is identical, parameter is tried one's best approaching anti-phase access frequency divider, thereby form a ball symmetry, recommend resonant cavity.The utility model is to utilize the vibrating diaphragm of two woofers to recommend mutually in the process of vibration sounding, make the acoustic energy that send at each diaphragm of loudspeaker back side can be converted in time the acoustic energy that send in another diaphragm of loudspeaker front, and mutually superpose with the acoustic energy that send in another diaphragm of loudspeaker front, form acoustic resonance enlarge-effect.Experiment shows, two row that sent by two symmetrical woofers of installing are anti-phase sound wave each other, only can form " acoustic interference " and can not form " acoustic short circuit ", and " acoustic interference " can not impact the tonequality of audio amplifier.This utility model audio amplifier is when thoroughly eliminating woofer " acoustic short circuit " phenomenon, can not produce the phase-reversing tube implication stream noise jamming of closed audio amplifier " air spring " effect, phase inverted cabinet and " sound coloration " distortion of transmission line audio amplifier, and the inner chamber of sound box is to consist of hollow ball shape curved surface, therefore also eliminated the condition that casing standing internal wave forms, thus make that this audio amplifier sends that tone-off dyes, noiseless, Sound image localization accurately, have super Hi-Fi pure stereo.
Accompanying drawing explanation
Fig. 1 is the profile front schematic view of the utility model example one.
Fig. 2 is the schematic rear view of Fig. 1.
Fig. 3 is the vertical profile end view of Fig. 1.
Fig. 4 is the profile front schematic view of the utility model example two.
Fig. 5 is the schematic rear view of Fig. 4.
Fig. 6 is the vertical profile end view of Fig. 5.
Reference numeral is as follows:
Casing 1, loud speaker 2, low tone chamber 3, middle tone chamber 4, high tone chamber 5, sphere curved surface 6, frequency divider 7.
Embodiment
The utility model is the super Hi-Fi sound-box of ball symmetrical push-pull, structure and the frequency dividing circuit of 5 He Zhong tone chambers 4, Qi Gao tone chamber are all same as the prior art, the innovation of this design is that the inner chamber of Qi Di tone chamber 3 is hollow ball shape curved surface 6 structures, Bing Di tone chamber 3 just, respectively offer a woofer installing hole in the symmetric position of the back of the body two sides or left and right side.
Low tone chamber 3 of the present utility model is hollow ball shape curved surface cavities that formed by foamed pearlite pouring concrete, and at it just, output two woofer installing holes in the symmetric position on the back of the body two sides or left and right side (preferably just, back of the body two sides), then by two bass output circuits that model is identical, parameter is tried one's best the anti-phase access frequency divider 7 of approaching woofer 2, thereby form a ball symmetry, recommend resonant cavity.
As shown in Figure 1, Figure 2, Figure 3 shows, ball symmetry described in the utility model is recommended structure of resonant cavity, both can be applicable to two divided-frequency bookshelf-type audio amplifier; As shown in Fig. 4, Fig. 5, Fig. 6, can be applicable to again the two bass ground sound box of three frequency division; Also can be applicable to recommend by several ball symmetries the Duo Di tone chamber 3 sound column formula audio amplifiers that structure of resonant cavity is formed by stacking.In addition, also can utilize coaxial full-range loudspeaker to design mini formula heterotypic baffle box casing, as spherical in shape in profile, egg type, square or eight diagram-shaped audio amplifier.
The utility model utilizes the vibrating diaphragm of woofer 2 to recommend mutually in the process of vibration sounding, the acoustic energy that two woofers, the 2 vibrating diaphragm back sides are sent, can convert in time the acoustic energy that send in woofer 2 vibrating diaphragm fronts to, and the acoustic energy that makes it to send with woofer 2 fronts superposes mutually, form acoustic resonance enlarge-effect, thoroughly eliminated " air spring " effect of closed audio amplifier simultaneously, " acoustic short circuit " phenomenon of loud speaker 2, the condition that the pneumatic noise of the paraphase mouth of pipe and casing 1 standing internal wave form, making audio amplifier send tone-off dyes, noiseless, Sound image localization is accurate, super Hi-Fi pure stereo.
The utility model has been overturned the design concept of traditional audio amplifier, by two symmetrical also woofers 2 of anti-phase place in circuit of installing before and after audio amplifier, the positive half cycle of audible communication electricity and negative half period are carried out to symmetry conversion simultaneously, make two row that two woofers 2 send in the opposite direction each other anti-phase sound wave only can form " acoustic interference " and can not form " acoustic short circuit ", and " acoustic interference " can not cause audio distortions as symphony.The design does not need to absorb the anti-phase sound wave that send at the loud speaker 2 vibrating diaphragm back sides, so do not use any sound-absorbing material in casing 1.In view of the air pressure inside and outside audio amplifier is keeping dynamic equilibrium always, without according to the volume of formula accurate Calculation audio amplifier, can casing 1 be accomplished to minimum according to the size of the loud speaker of all size 2, and the shape of casing 1 is also followed one's bent.Even if use cheap ventional loudspeakers 2, the sound of the high-fidelity of also resetting out tonequality.Audio amplifier production process of the present utility model is simple, without debugging one dress, thereby audio amplifier is greatly reduced at the cost of the aspects such as design, manufacture, installation, debugging.
The utility model is that the casing of closed audio amplifier 1 inner chamber is divided into high tone chamber 5,4 He Di tone chambers 3, middle tone chamber, and Di tone chamber increases at 3 back sides woofer 2 installing holes, and Bing Jiangdi tone chamber 3 use foamed pearlite concrete castings form hollow ball shape curved-surface structure.If audio amplifier manufacturer can utilize this new technology, traditional audio amplifier is carried out once to comprehensively upgrading, so, when significantly reducing audio amplifier production cost, can also further promote significantly the tonequality of audio amplifier, and the speaker products of low cost, high efficiency, high-fidelity will have more the market competitiveness.
The casing 1 of the utility model audio amplifier can be designed to one and recommend resonant cavity to a plurality of ball symmetries.Both can utilize conventional loud speaker 2 to produce the two bass ground sound box of two divided-frequency bookshelf-type audio amplifier, three frequency division, many balls symmetry is recommended the conventional audio amplifiers such as resonant cavity sound column; Also can utilize coaxial full-range loudspeaker 2 to produce the Special-shaped acoustic enclosures such as spherical sound, egg type audio amplifier, square sound box and eight diagram-shaped audio amplifier (be audio amplifier just, back of the body two sides is positive eight prisms of octagon) of volume minimum; Ball symmetry can also be recommended to resonant cavity horizontally set, two woofers 2 are arranged on respectively to two sides of audio amplifier, and high pitch loudspeaker 2 and Squawker 2 still be arranged on the front of audio amplifier, form novel side-vibration type audio amplifier.The material of manufacturing sound box 1, both can be used the conventional materials such as timber, glued board, also can use the special materials such as metal, pottery, glass, plastics, stone material, concrete.
Claims (5)
1. the super Hi-Fi sound-box of ball symmetrical push-pull, comprise casing (1) and be arranged at the indoor height of diaphone in casing (1), in, woofer (2), it is characterized in that: low tone chamber (3) inner chamber of this audio amplifier is hollow ball shape curved surface (6) structure, and at it just, back of the body two sides or a left side, in the symmetric position of right flank, offer two installing holes, two models are identical, the approaching woofer (2) of parameter is respectively charged in this installing hole, the bass output circuit of the anti-phase access frequency dividers of two woofers (2) (7) also forms ball symmetry and recommends resonant cavity together with described low tone chamber (3).
2. the super Hi-Fi sound-box of ball symmetrical push-pull according to claim 1, is characterized in that: the inner chamber of described low tone chamber (3) is formed by foamed pearlite pouring concrete, or is formed by whole Carving Machining such as timber, stone materials.
3. the super Hi-Fi sound-box of ball symmetrical push-pull according to claim 1, is characterized in that: described casing (1) is the casing (1) of the casing (1) of two divided-frequency bookshelf-type audio amplifier or three frequency division pair bass ground sound box or the casing (1) that is superposed to sound column formula audio amplifier by low tone chamber (3) described in several.
4. the super Hi-Fi sound-box of ball symmetrical push-pull according to claim 1, is characterized in that: the profile of described casing (1), both can be cuboid prismatic, and also can be spherical in shape, egg type, square body or Eight Diagrams body.
5. the super Hi-Fi sound-box of ball symmetrical push-pull according to claim 1, is characterized in that: described casing (1) is made by timber, glued board, metal, pottery, glass, plastics, stone material or concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420107640.8U CN203734819U (en) | 2014-03-11 | 2014-03-11 | Spherically symmetrical push-pull type ultra-high-fidelity sound box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420107640.8U CN203734819U (en) | 2014-03-11 | 2014-03-11 | Spherically symmetrical push-pull type ultra-high-fidelity sound box |
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| Publication Number | Publication Date |
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| CN203734819U true CN203734819U (en) | 2014-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420107640.8U Expired - Lifetime CN203734819U (en) | 2014-03-11 | 2014-03-11 | Spherically symmetrical push-pull type ultra-high-fidelity sound box |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108322847A (en) * | 2018-03-28 | 2018-07-24 | 广州市智泓电子有限公司 | A kind of band positive, which recommends air, can convert loudspeaker acoustic enclosure |
| CN110089128A (en) * | 2016-12-14 | 2019-08-02 | 杜比实验室特许公司 | Multiple driver loudspeaker with cross-linked double wave column |
| CN110719549A (en) * | 2019-10-15 | 2020-01-21 | 李世煌 | Stereo sound box and stereo system |
-
2014
- 2014-03-11 CN CN201420107640.8U patent/CN203734819U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110089128A (en) * | 2016-12-14 | 2019-08-02 | 杜比实验室特许公司 | Multiple driver loudspeaker with cross-linked double wave column |
| CN110089128B (en) * | 2016-12-14 | 2020-08-25 | 杜比实验室特许公司 | Multi-driver speaker with cross-coupled dual wavecolumns and method of outputting the same |
| US10812895B2 (en) | 2016-12-14 | 2020-10-20 | Dolby Laboratories Licensing Corporation | Multi-driver loudspeaker with cross-coupled dual wave-columns |
| CN108322847A (en) * | 2018-03-28 | 2018-07-24 | 广州市智泓电子有限公司 | A kind of band positive, which recommends air, can convert loudspeaker acoustic enclosure |
| CN108322847B (en) * | 2018-03-28 | 2024-05-17 | 广州市智泓电子有限公司 | Loudspeaker box with normal phase push-pull air energy conversion function |
| CN110719549A (en) * | 2019-10-15 | 2020-01-21 | 李世煌 | Stereo sound box and stereo system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140723 |
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| CX01 | Expiry of patent term |