CN104378712A - Low-frequency dynamic resonance enhancement loudspeaker box - Google Patents
Low-frequency dynamic resonance enhancement loudspeaker box Download PDFInfo
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- CN104378712A CN104378712A CN201410735243.XA CN201410735243A CN104378712A CN 104378712 A CN104378712 A CN 104378712A CN 201410735243 A CN201410735243 A CN 201410735243A CN 104378712 A CN104378712 A CN 104378712A
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Abstract
The invention relates to a low-frequency dynamic resonance enhancement loudspeaker box comprising a box body, a main loudspeaker and a resonator radiator. The main loudspeaker is mounted on the box body. The resonator radiator is mounted on a guide airflow loop in the box body and used for generating resonance with sound-wave airflow emitted from the main loudspeaker so as to control low-frequency dynamic and resonance frequency of the main loudspeaker. The technical defects of low-sound distortion caused during too low frequency, serious sound interference in high-medium sound frequency bands and the out-of-round loudspeaker paper cones in movement in over-high low-frequency amplitude, resulting in increase of damage rate of the loudspeaker and the like in the prior art can be overcome effectively, the loudspeaker box is low, deep, natural and extended in performance in the low sound region and is particularly suitable for being applied to K-rooms and Hi-rooms.
Description
Technical field
The present invention relates to audio amplifier field, particularly relate to the audio amplifier that a kind of low frequency dynamic resonance strengthens.
Background technology
Audio amplifier is the terminal of whole sound system, and its structure mainly comprises casing and loudspeaker, and the structure of loudspeaker mainly comprises cone, frame, centering piece (also known as bullet ripple), voice coil loudspeaker voice coil and magnet steel.Acoustic wave energy can propagate in space and go by loudspeaker in the form of a sound wave, and acoustic wave energy comes from the conversion of the signal of telecommunication and electromagnetic energy, and the vibrations of loudspeaker and motion all come from the change of the sinusoidal wave signal of telecommunication.During positive half wave, the motion of loudspeaker promotes outside the audio amplifier of dead ahead, in case, during negative half-wave, the signal of telecommunication is motion in the other direction, so just there is positive antiphase, malleation and negative pressure inside and outside audio amplifier, it is that a complete sinewave output just must be led to have come mutually that the signal of telecommunication of positive antiphase will be unified, what such people heard is a complete sine wave signal.
Loudspeaker are arranged on the casing of audio amplifier, and also namely the basin mouth of cone is towards outside casing for the front of loudspeaker, and the back side of loudspeaker is towards box house; Operationally, the loudspeaker acoustic wave energy entrained by radiated wave behind can be subject to the encirclement of casing, could not exhale, can not be used directly in casing; Simultaneously, these sound waves also can be subject to box house environmental impact by roundtrip and be applied on the vibrating body of loudspeaker, wherein the acoustic pressure of anti-ripple can disturb the vibration of the vibrating body of loudspeaker, further ability and the effect affecting loudspeaker radiation sound wave (sound), therefore need box house negative pressure to be led mutually out, also namely reduce pressure.From speaker dead ahead decompression be referred to as leading phase, from audio amplifier rear decompression be referred to as after lead phase.The structure of traditional amusement audio amplifier and lead phase situation and refer to Fig. 1 and Fig. 2, wherein, accompanying drawing mark 1 be casing, and it is loudspeaker that accompanying drawing identifies 2, and Fig. 1 is leading phase, and Fig. 2 leads phase after being.Lead phase after current amusement OK a karaoke club audio amplifier market much adopts, because can export better bass effect, but it can bring environment and the difficulty installed to user, and there is the defects such as phase distortion, bass time delay, debug difficulties; And leading phase sound out of leading mutually seldom has phase distortion and time delay.
Amusement audio amplifier is developed so far, and the quality requirements of market to Karaoke audio amplifier is more and more higher, and more and more succinct to the requirement of system, super high power, mega bass, well sing and can the acoustic audio amplifier of hi more and more by the welcome in market.But the audio amplifier reaching this effect brings certain difficulty to manufacture, the index of amusement level audio amplifier and the index of professional audio amplifier different, performance requirement is unique, because Karaoke audio amplifier and effect are applied as leading with market groups, if completely take as the leading factor can bring very large difficulty to the manufacture of loudspeaker, performance, durability etc. with it.Audio amplifier similar so is in general difficult to meet law of conservation of energy, because what sound was particular about is balance, if too require that bass is excessively heavy, alt district is just bound to weak, same sounding body exports full range signal, bass is crossed to sink and will be produced excessive acoustic interference relative to alt district, directly have influence on the singing effect of people (such as: music signal and voice come from same vibration body, due to the performance that frequency is different on same vibration body, the sound exported has difference).When in Larger Dynamic situation, low frequency is crossed heavy, alt will be subject to the interference of bass, thus causes bass distortion, and alt frequency range is subject to serious acoustic interference, and the cone of loudspeaker, at the excessive middle mistake circle of low frequency amplitude motion, also can increase the spoilage of loudspeaker simultaneously greatly.
Summary of the invention
The present invention is directed to audio amplifier of the prior art in Larger Dynamic situation, bass distortion is caused when low frequency is crossed heavy, alt frequency range is subject to serious acoustic interference, and the cone of loudspeaker is at the excessive middle mistake circle of low frequency amplitude motion, cause the technological deficiencies such as the spoilage increase of loudspeaker, propose the audio amplifier that a kind of low frequency dynamic resonance strengthens.
The audio amplifier that a kind of low frequency dynamic resonance that the present invention proposes strengthens, comprise casing and main loudspeaker, described main loudspeaker are installed on described casing; Also comprise resonant body radiator, described resonant body radiator is installed in leads in phase gas flow loop in described casing, resonates for the sound wave air-flow sent with described main loudspeaker, with the low frequency controlling described main loudspeaker dynamically and resonance frequency.
Preferably, described resonant body radiator comprises frame, cone and centering piece; Described cone is fixed in described frame, and described centering piece is arranged in described frame, between described frame and the bottom of described cone.
Preferably, described casing is leadingly to arrange mutually.
Preferably, described frame is cone horn basin rack, and profile and the described cone horn basin rack of described cone match.
Preferably, the bore of described cone horn basin rack is consistent with the frame bore of described main loudspeaker.
Preferably, the low frequency dynamic resonance of described audio amplifier strengthens the dynamic resonance enhancing referring to the low frequency of music frequency between 40 hertz to 100 hertz.
Preferably, described audio amplifier is amusement audio amplifier.
Beneficial effect: the audio amplifier that the low frequency dynamic resonance that the present invention proposes strengthens, leading in phase gas flow loop in its casing is installed on resonant body radiator; During described audio amplifier work, the sound wave air-flow that described main loudspeaker send impels the resonance of described resonant body radiator generation certain frequency, the frequency of this resonance can produce certain damping action to the air-flow in case in the performance of low-frequency range, effectively control low frequency dynamically (motion amplitude) and the resonance frequency of main loudspeaker, improve the definition of the sound that audio amplifier sends; Meanwhile, due to the low-frequency resonance effect of described resonant body radiator, the clutter of the alt frequency range of box house sound can be absorbed, and low-frequency range can be applied, and can produce solid thick and heavy bass and export after the multiple harmonic that in casing, low frequency produces superposes.Therefore the present invention effectively can solve when prior art medium and low frequency is crossed heavy and cause bass distortion, and alt frequency range is subject to serious acoustic interference, and the cone of loudspeaker loses circle in low frequency amplitude excessive movements, causes the technological deficiencies such as the spoilage increase of loudspeaker.
Accompanying drawing explanation
Fig. 1 is the structure of the leading amusement audio amplifier arranged mutually in prior art and leads phase situation schematic diagram.
Fig. 2 be in prior art after lead the structure of the amusement audio amplifier arranged mutually and lead phase situation schematic diagram.
Be the audio amplifier example structure that strengthens of a kind of low frequency dynamic resonance that the present invention proposes in Fig. 3 and lead phase situation schematic diagram.
In Fig. 3: 10-casing, the main loudspeaker of 20-, 30-resonant body radiator, the reverse acoustic pressure of the main loudspeaker of A-, the leading phase air stream outlet of B-, C-resonant body radiator receives sound wave air-flow, and the resonance of D-resonant body radiator produces sound wave, and E-leads phase gas channel.
Embodiment
For the ease of it will be appreciated by those skilled in the art that the present invention is described further below in conjunction with accompanying drawing and embodiment.
Refer to Fig. 3, the audio amplifier that a kind of low frequency dynamic resonance that the present embodiment proposes strengthens, comprise casing 10 and main loudspeaker 20, described main loudspeaker 20 are installed on described casing 10; Also comprise resonant body radiator 30, described resonant body radiator 30 is installed in leads in phase gas flow loop in described casing 10, resonates for the sound wave air-flow sent with described main loudspeaker 20, with the low frequency controlling described main loudspeaker 20 dynamically and resonance frequency.
In the present embodiment, main loudspeaker 20 are equivalent to an initiatively focus, and resonant body radiator 30 is equivalent to a passive vibration body, the sound wave air-flow that main loudspeaker 20 therefrom send impels resonant body radiator 30 to resonate, and resonant body radiator 30 resonance can play damping action to the sound wave air-flow that main loudspeaker 20 therefrom send, thus control low frequency dynamically (motion amplitude) and the resonance frequency of main loudspeaker 20 conversely.
Suppose the control action not having described resonant body radiator 30, initiatively loudspeaker 20 when Larger Dynamic runs particularly when the signal of low-frequency range works, its voice coil loudspeaker voice coil can do piston movement, and the control ability of main loudspeaker 20 self can weaken greatly, and the index of sound can reduce greatly.Because leading in phase gas flow loop in casing 10 is installed on resonant body radiator 30 in the present embodiment, when described audio amplifier 10 works, the sound wave air-flow that described main loudspeaker 20 send impels described resonant body radiator 30 that the resonance of certain frequency occurs, the frequency of this resonance can produce certain damping action to the air-flow in casing 10 in the performance of low-frequency range, effectively control resonant dynamic (motion amplitude) and the resonance frequency of main loudspeaker 20, improve the definition of the sound that audio amplifier sends; Simultaneously, due to the low-frequency resonance effect of described resonant body radiator 30, clutter (comprising the noise etc. of unnecessary harmful clutter in casing 10, windage generation) in the alt frequency range of casing 10 internal sound can be absorbed, low-frequency range can be applied, and can produce solid thick and heavy bass and export after the multiple harmonic that in casing, low frequency produces superposes.Therefore the present embodiment effectively can solve when prior art medium and low frequency is crossed heavy and cause bass distortion, and alt frequency range is subject to serious acoustic interference, and the cone of loudspeaker loses circle in low frequency amplitude excessive movements, causes the technological deficiencies such as the spoilage increase of loudspeaker.
In order to realize the object of the present embodiment better, the structure of the present embodiment to described resonant body radiator 30 has done optimal design, concrete, and described resonant body radiator 30 comprises frame, cone and centering piece; Described cone is fixed in described frame, and described centering piece is arranged in described frame, between described frame and the bottom of described cone.
In the present embodiment, in order to understand conveniently, resonant body radiator 30 can be understood as one do not possess voice coil loudspeaker voice coil and magnet steel from loudspeaker (having any different with the structure of main loudspeaker 20), frame in this resonant body radiator 30, fixed relationship between cone and centering piece three can with reference to the main frame of loudspeaker 20, the fixed relationships between cone and centering piece.
And, in the present embodiment, the low frequency dynamic resonance that described resonant body radiator 30 can strengthen as required, change the soft durometer of its centering piece and the thickness degree of cone, thus according to the principle of resonance, resonant body radiator 30 is subject to the impact of the sound wave air-flow that main loudspeaker 20 send, and will produce the vibration of fixed frequency.Resonant body radiator 30 vibrates motion amplitude and the resonance frequency that the damping action produced can control main loudspeaker 20 effectively, greatly reduces the distortion factor of low frequency, improves the stability of main loudspeaker 20 under the operating state of Larger Dynamic.
In the present embodiment, described casing 10 is arranged mutually for leading, lead in phase gas flow loop because resonant body radiator 30 is arranged on, make audio amplifier lead phase air-flow and export better low distortion low frequency sound signals, effectively improve the sounding condition of speaker, thus improve the characteristic of audio amplifier, can not excessively heavy because of bass area bass, cross false and interfere voice in the performance in medium and low frequency district, also can improve the sensitivity of audio amplifier, sound pressure level and useful life simultaneously greatly, more meet the demand of current casino market.
Further, in the present embodiment, the frame of described resonant body radiator 30 is cone horn basin rack, and profile and the described cone horn basin rack of described resonant body radiator 30 cone match.Meanwhile, the bore of described cone horn basin rack is consistent with the frame bore of described main loudspeaker.Main loudspeaker 20 and resonant body radiator 30 can be made so relative consistent on monnolithic case, be more conducive to the control that resonant body radiator 30 realizes the low frequency dynamic resonance to main loudspeaker 20.
In the present embodiment, the low frequency dynamic resonance of described audio amplifier strengthens the dynamic resonance be preferably for the low frequency of music frequency between 40 hertz to 100 hertz and strengthens.Certainly, the present embodiment is not limited only to control the low frequency between 40 hertz to 100 hertz, but the control effects of the present embodiment to the low frequency between 40 hertz to 100 hertz can be just good.
In the present embodiment, described audio amplifier is preferably amusement audio amplifier.The control of amusement audio amplifier to low frequency dynamic resonance possesses requirements at the higher level, and the present embodiment is better for the beneficial effect of amusement audio amplifier.
The audio amplifier that the low frequency dynamic resonance that the present embodiment proposes strengthens, it is overcast, simple and honest, natural in the performance of bass area, have stretching force.Such as, at the normal sounding of main loudspeaker 20, when music has low frequency signal to show, the special construction of casing 10 and resonant body radiator 30 is used to combine, make it to produce multiple harmonic and low frequency energy superposition, then adopt leading phase, make audio amplifier lead phase air-flow and export better low distortion low frequency, effectively improve the practicality of audio amplifier.
The present embodiment can decrease the technical requirement to main loudspeaker 20, without the need to focusing on very much the thickness of main loudspeaker 20 bass, as long as it has normal naturally bass to show.The present embodiment is mainly for closely public address, and be particularly suitable for K room and Hi room, in using, in time having low frequency signal, bass shows full, simple and honest, true nature, has the taste of subwoofer.
The above embodiment only have expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (7)
1. an audio amplifier for low frequency dynamic resonance enhancing, comprise casing and main loudspeaker, described main loudspeaker are installed on described casing; It is characterized in that, also comprise resonant body radiator, described resonant body radiator is installed in leads in phase gas flow loop in described casing, resonates for the sound wave air-flow sent with described main loudspeaker, with the low frequency controlling described main loudspeaker dynamically and resonance frequency.
2. the audio amplifier of low frequency dynamic resonance enhancing according to claim 1, is characterized in that: described resonant body radiator comprises frame, cone and centering piece; Described cone is fixed in described frame, and described centering piece is arranged in described frame, between described frame and the bottom of described cone.
3. the audio amplifier that strengthens of low frequency dynamic resonance according to claim 2, is characterized in that, described casing is leadingly to arrange mutually.
4. the audio amplifier of low frequency dynamic resonance enhancing according to claim 3, it is characterized in that, described frame is cone horn basin rack, and profile and the described cone horn basin rack of described cone match.
5. the audio amplifier of low frequency dynamic resonance enhancing according to claim 4, it is characterized in that, the bore of described cone horn basin rack is consistent with the frame bore of described main loudspeaker.
6. according to the audio amplifier that the arbitrary described low frequency dynamic resonance of claim 1 to 5 strengthens, it is characterized in that, the low frequency dynamic resonance of described audio amplifier strengthens the dynamic resonance enhancing referring to the low frequency of music frequency between 40 hertz to 100 hertz.
7. the audio amplifier of low frequency dynamic resonance enhancing according to claim 6, it is characterized in that, described audio amplifier is amusement audio amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410735243.XA CN104378712B (en) | 2014-12-04 | 2014-12-04 | The audio amplifier of low frequency dynamic resonance enhancing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410735243.XA CN104378712B (en) | 2014-12-04 | 2014-12-04 | The audio amplifier of low frequency dynamic resonance enhancing |
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| Publication Number | Publication Date |
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| CN104378712A true CN104378712A (en) | 2015-02-25 |
| CN104378712B CN104378712B (en) | 2018-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410735243.XA Active CN104378712B (en) | 2014-12-04 | 2014-12-04 | The audio amplifier of low frequency dynamic resonance enhancing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107404693A (en) * | 2016-05-18 | 2017-11-28 | 宁波升亚电子有限公司 | Radiator and double suspension side loudspeaker and audio amplifier and its application |
| CN107979787A (en) * | 2017-11-28 | 2018-05-01 | 江苏鹏美电声器材有限公司 | Woofer |
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| CN2228699Y (en) * | 1994-11-22 | 1996-06-05 | 张志坚 | Composite sound-coupling phase-inversion speaker cabinet |
| CN2311109Y (en) * | 1997-08-26 | 1999-03-17 | 冯卫国 | Foot stool resonant speaker system |
| CN2332136Y (en) * | 1997-08-21 | 1999-08-04 | 杨明海 | Multi-mode loudspeaker box |
| US20040251079A1 (en) * | 2003-06-02 | 2004-12-16 | Plummer Jan Princeton | Closed loop embedded audio transmission line technology for loudspeaker enclosures and systems |
| CN203504545U (en) * | 2013-08-28 | 2014-03-26 | 东莞市德生通用电器制造有限公司 | Radio with passive radiator |
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2014
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2228699Y (en) * | 1994-11-22 | 1996-06-05 | 张志坚 | Composite sound-coupling phase-inversion speaker cabinet |
| CN2332136Y (en) * | 1997-08-21 | 1999-08-04 | 杨明海 | Multi-mode loudspeaker box |
| CN2311109Y (en) * | 1997-08-26 | 1999-03-17 | 冯卫国 | Foot stool resonant speaker system |
| US20040251079A1 (en) * | 2003-06-02 | 2004-12-16 | Plummer Jan Princeton | Closed loop embedded audio transmission line technology for loudspeaker enclosures and systems |
| CN203504545U (en) * | 2013-08-28 | 2014-03-26 | 东莞市德生通用电器制造有限公司 | Radio with passive radiator |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107404693A (en) * | 2016-05-18 | 2017-11-28 | 宁波升亚电子有限公司 | Radiator and double suspension side loudspeaker and audio amplifier and its application |
| CN107404693B (en) * | 2016-05-18 | 2024-05-14 | 宁波升亚电子有限公司 | Radiator, double-edge-hung loudspeaker and loudspeaker box and application thereof |
| CN107979787A (en) * | 2017-11-28 | 2018-05-01 | 江苏鹏美电声器材有限公司 | Woofer |
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| CN104378712B (en) | 2018-04-10 |
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Effective date of registration: 20230719 Address after: 511400 No.3, east third lane, Hougang Industrial Park, Shayong, Dalong street, Panyu District, Guangzhou City, Guangdong Province Patentee after: GUANGZHOU NUOZUN ELECTRONIC TECHNOLOGY CO.,LTD. Address before: 410014 Room 201, Building 9, No. 04, Natural Ridge Road, Yuhua District, Changsha City, Hunan Province Patentee before: Li Jianhui |