CN101711005B - Device for improving outgoing loudspeaker responses - Google Patents
Device for improving outgoing loudspeaker responses Download PDFInfo
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- CN101711005B CN101711005B CN200910234220.XA CN200910234220A CN101711005B CN 101711005 B CN101711005 B CN 101711005B CN 200910234220 A CN200910234220 A CN 200910234220A CN 101711005 B CN101711005 B CN 101711005B
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- loudspeaker
- cavity
- responses
- partition board
- improving
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- 238000005192 partition Methods 0.000 claims abstract description 14
- 208000002925 dental caries Diseases 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 101100273027 Dictyostelium discoideum cafA gene Proteins 0.000 description 1
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Abstract
The invention discloses a device for improving outgoing loudspeaker responses, particularly relating to a device for improving medium-high frequency responses of outgoing loudspeakers of terminals, such as mobile telephones and the like. The device for improving outgoing loudspeaker responses comprises a minitype loudspeaker, a back cavity and a front cavity, wherein the minitype loudspeaker is used for converting an input electric signal into a corresponding acoustic signal; the back cavity is fixed to the back side of the loudspeaker diaphragm; the front cavity is fixed to the front side of the loudspeaker diaphragm; the front cavity is divided by a first partition board into a first subcavity and a second subcavity; the first partition board and the second partition board are provided with holes; and the device is coupled with the outside region through the hole in the second partition board. The resonance of the two subcavities of the front cavity can be controlled by changing the geometric dimensions of the front cavity, thereby effectively enhancing the responses of the frequency range corresponding to the medium-high frequency.
Description
One, technical field
The present invention relates to a kind of device that improves outgoing loudspeaker responses, in particular to a kind of device of medium-high frequency response of the outgoing loudspeaker that improves the terminal such as mobile phone.
Two, background technology
At present, the use of the terminals such as mobile phone and MP3 is more and more extensive, and people are also more and more higher to the requirement of the outer playing function of these terminals.The attached cavity body structure of loud speaker has certain impact to the Frequency Response of loud speaker, and ante-chamber affects high frequency, and back cavity affects low frequency.Cavity configuration only has a cavity before the mobile phone of introducing among US Patent No. 5790679, US6002949, US7092745 and the US20050190941, utilize the resonance of aperture on ante-chamber and the front shroud, can strengthen the response of the some frequency ranges on the medium-high frequency, but the bandwidth of the frequency range that strengthens is narrower.
Three, summary of the invention
The purpose of this invention is to provide a kind of device that improves outgoing loudspeaker responses, can promote better the response of medium-high frequency, and make the broader bandwidth of the frequency range that strengthens.This device comprises a Microspeaker, is used for converting the signal of telecommunication of input to corresponding acoustical signal; One is sealed back cavity, is fixed on the back of the diaphragm of loudspeaker; An ante-chamber is fixed on the front of the diaphragm of loudspeaker; This ante-chamber is the first and second sub-cavitys by the first baffle for separating, bores a hole at the first dividing plate and second partition, and by the perforate on the second partition and the coupling of outer boundary region, the volume of the radius of perforate and number and sub-cavity is determined by the band limits that will strengthen.
Four, description of drawings
Fig. 1 is the device schematic diagram that uses in the existing terminal equipment;
Fig. 2 is the schematic diagram of a kind of citation form of the present invention, comprises a Microspeaker, a sealing back cavity, and an ante-chamber, wherein ante-chamber is the first and second sub-cavitys by the first baffle for separating, bores a hole on the first dividing plate and the second partition;
Fig. 3 is the acoustic analog line map of the ante-chamber structural correspondence among Fig. 2;
Fig. 4 is that the loud speaker frequency response curve of the present invention and prior art compares.
Five, embodiment
The present invention is described in detail with reference to accompanying drawing below in conjunction with embodiment:
Fig. 2 is the embodiment schematic diagram that a loud speaker is put device outward.Wherein, this device comprises a housing 200, includes a Microspeaker 201 and can convert the signal of telecommunication of input to corresponding acoustical signal.In one embodiment, form the first sub-cavity 210 between the vibrating diaphragm front of loud speaker 201 and the first dividing plate 211, at the first dividing plate 211 perforate 212 is arranged.In one embodiment, form the second sub-cavity 220 between the first dividing plate 211 and the second partition 221, at second partition 221 perforate 222 is arranged.In one embodiment, the vibrating diaphragm back of loud speaker 201 and housing 200 form sealing back cavity 230.
Fig. 3 is the acoustic analog line map of the ante-chamber structural correspondence among Fig. 2.Wherein, the first sub-cavity 210 equivalences become an acoustic capacitance element, and component value is CAf1; Perforate 212 equivalences on the first dividing plate 211 become the combination of acoustic resistance harmony mass elements, and its component value is respectively RAo1 and MAo1; The second sub-cavity 220 equivalences become an acoustic capacitance element, and component value is CAf2; Perforate 222 equivalences on the second partition 221 become the combination of acoustic resistance harmony mass elements, and its component value is respectively RAo2 and MAo2.The computing formula of above various component values can be with reference to document and the technical manual of public publication.
The physical dimension of a preferred embodiment of the present invention is: the volume of the first sub-cavity 210 is 0.20 cubic centimetre; Open 1 hole on the first dividing plate 211, the radius in hole is 0.5 millimeter, and length is 1 millimeter; The volume of the second sub-cavity 220 is 0.40 cubic centimetre; Open 2 holes on the second partition 221, the radius in each hole is 0.5 millimeter, and length is 1 millimeter; The volume of sealing back cavity 230 is 50 cubic centimetres.
As a comparison, the physical dimension of a kind of embodiment of prior art is: the volume of ante-chamber 110 is 0.60 cubic centimetre; Open 2 holes on the front dividing plate 111, the radius in each hole is 0.5 millimeter, and length is 1 millimeter; The volume of sealing back cavity 120 is 50 cubic centimetres.
Fig. 4 is that the loud speaker frequency response curve of a kind of embodiment of a preferred embodiment of the present invention and prior art compares.Can find out, a resonance peak appears in prior art near 2.5kHz, responds to reduce rapidly after 2.5kHz, and the bandwidth of the frequency range that strengthens is narrower; Although and the present invention slightly reduces to the response of 1.5kHz at 400Hz, but a resonance peak appears respectively near 2.5kHz and 4kHz, guarantee that like this response from 2kHz to 4kHz can both increase, the problem that reduces rapidly in the later response of first resonance peak, the broader bandwidth of the frequency range that strengthens have been avoided.
By changing the physical dimension of embodiment, comprise the number of perforate on the radius of the number of perforate on the volume, the first dividing plate 211 of volume, the second sub-cavity 220 of the first sub-cavity 210 and perforate and the second partition 221 and the radius of perforate, can control position and the height of two resonance peaks, thereby reach the purpose that strengthens some special frequency channel response of medium-high frequency.
More than be the description to one particular embodiment of the present invention, the description that can be understood as for embodiment only is a kind of example.Correspondingly, the invention is not restricted to the above embodiment.Certainly, scope of the present invention described here only limits to the described scope of claims relevant with above-mentioned explanation and description taken together with the accompanying drawings.
Claims (1)
1. the device of the medium-high frequency response of an outgoing loudspeaker that is used for improving mobile phone terminal comprises:
A Microspeaker is used for converting the signal of telecommunication of input to corresponding acoustical signal;
One is sealed back cavity, is fixed on the back of the diaphragm of loudspeaker;
An ante-chamber is fixed on the front of the diaphragm of loudspeaker; This ante-chamber is the first and second sub-cavitys by the first baffle for separating, bores a hole on the first dividing plate and the second partition, and by the perforate on the second partition and the coupling of outer boundary region, the volume of the radius of perforate and number and sub-cavity is determined by the band limits that will strengthen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910234220.XA CN101711005B (en) | 2009-11-17 | 2009-11-17 | Device for improving outgoing loudspeaker responses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910234220.XA CN101711005B (en) | 2009-11-17 | 2009-11-17 | Device for improving outgoing loudspeaker responses |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101711005A CN101711005A (en) | 2010-05-19 |
| CN101711005B true CN101711005B (en) | 2013-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910234220.XA Expired - Fee Related CN101711005B (en) | 2009-11-17 | 2009-11-17 | Device for improving outgoing loudspeaker responses |
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| Country | Link |
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| CN (1) | CN101711005B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102056047B (en) * | 2010-12-14 | 2013-06-05 | 南京大学 | Large-radiation angle six to nine-sound source speaker array |
| CN102395088B (en) * | 2011-08-30 | 2014-06-04 | 瑞声声学科技(深圳)有限公司 | Sounding device |
| CN103052009B (en) * | 2012-12-25 | 2016-08-31 | 苏州恒听电子有限公司 | A kind of phonation unit eliminating gear sound influence |
| CN204350291U (en) * | 2015-02-03 | 2015-05-20 | 歌尔声学股份有限公司 | Loud speaker module |
| CN105872919B (en) * | 2016-03-08 | 2017-04-05 | 上海安费诺永亿通讯电子有限公司 | A kind of speaker module |
| CN106454655A (en) * | 2016-09-30 | 2017-02-22 | 常州阿木奇声学科技有限公司 | Loudspeaker and voice coil thereof |
| CN109600702B (en) * | 2017-09-30 | 2021-12-03 | 西门子瑞士有限公司 | Sound alarm device |
| CN112398987A (en) * | 2020-11-18 | 2021-02-23 | 维沃移动通信有限公司 | Electronic device |
| CN113473334B (en) * | 2021-06-29 | 2022-11-01 | 歌尔股份有限公司 | Sound production monomer, speaker subassembly and electronic equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3588355A (en) * | 1968-07-26 | 1971-06-28 | James P Holm | Stereophonic loudspeaker system |
| US4079213A (en) * | 1977-04-21 | 1978-03-14 | Essex Group, Inc. | Piezoelectric transducer having improved low frequency response |
| US4549631A (en) * | 1983-10-24 | 1985-10-29 | Bose Corporation | Multiple porting loudspeaker systems |
| US5025885A (en) * | 1989-07-14 | 1991-06-25 | Bose Corporation | Multiple chamber loudspeaker system |
| US5092424A (en) * | 1990-12-03 | 1992-03-03 | Bose Corporation | Electroacoustical transducing with at least three cascaded subchambers |
| US5471019A (en) * | 1994-12-29 | 1995-11-28 | Sounds Resources, Inc. | Multiple chamber loudspeaker system |
| CN1863413A (en) * | 2005-05-12 | 2006-11-15 | 光宝科技股份有限公司 | Loudspeaker structure |
-
2009
- 2009-11-17 CN CN200910234220.XA patent/CN101711005B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3588355A (en) * | 1968-07-26 | 1971-06-28 | James P Holm | Stereophonic loudspeaker system |
| US4079213A (en) * | 1977-04-21 | 1978-03-14 | Essex Group, Inc. | Piezoelectric transducer having improved low frequency response |
| US4549631A (en) * | 1983-10-24 | 1985-10-29 | Bose Corporation | Multiple porting loudspeaker systems |
| US5025885A (en) * | 1989-07-14 | 1991-06-25 | Bose Corporation | Multiple chamber loudspeaker system |
| US5092424A (en) * | 1990-12-03 | 1992-03-03 | Bose Corporation | Electroacoustical transducing with at least three cascaded subchambers |
| US5471019A (en) * | 1994-12-29 | 1995-11-28 | Sounds Resources, Inc. | Multiple chamber loudspeaker system |
| CN1863413A (en) * | 2005-05-12 | 2006-11-15 | 光宝科技股份有限公司 | Loudspeaker structure |
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| Publication number | Publication date |
|---|---|
| CN101711005A (en) | 2010-05-19 |
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Granted publication date: 20130424 Termination date: 20181117 |
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