CN205213009U - Two impedance earphones - Google Patents
Two impedance earphones Download PDFInfo
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- CN205213009U CN205213009U CN201520672239.3U CN201520672239U CN205213009U CN 205213009 U CN205213009 U CN 205213009U CN 201520672239 U CN201520672239 U CN 201520672239U CN 205213009 U CN205213009 U CN 205213009U
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Abstract
The utility model relates to a two impedance earphones. The earphone speaker voice coil loudspeaker voice coil is when manufacturing, and the voice coil loudspeaker voice coil enameled wire adopts the go with each other all the time design, and voice coil loudspeaker voice coil lead wire outlet direction levels up 180 degrees, and loudspeaker are two impedances. The earphone utilizes switch conversion module to switch two sets of voice coil loudspeaker voice coils to become to connect in parallel or the series connection state to during the antithetical couplet state, the voice coil loudspeaker voice coil is low impedance, audio signal direct drive loudspeaker sound production promptly, during the series connection state, the voice coil loudspeaker voice coil is the high impedance promptly, and audio signal enlargies the back through the audio power amplifier module, drive loudspeaker sound production, this moment audio signal SNR improvement one time during than the low impedance, the signal also improves by fidelity greatly.
Description
Technical field
The utility model relates to the acoustic design of earphone horn, relates to a kind of two impedance earphone in particular.
Background technology
At present, the earphone products impedance that market is sold concentrates on 16 Ω, 32 Ω mostly, impedance is low, although general Mobile audio frequency equipment is easy to drive, but the signal to noise ratio that audio signal exports is low, and the fidelity of music signal is very poor, and the signal to noise ratio of audio signal becomes than relation with output impedance, impedance is lower, and signal to noise ratio is also low; Impedance is higher, and signal to noise ratio is higher.
According to Europe Mei law, audio-frequence player device is under the constant prerequisite of amplitude output signal, and the size of earphone impedance directly affects the height of loudspeaker output sound signal sensitivity.During Low ESR, output sensitivity is high, and earphone easily drives, but the signal to noise ratio that audio signal exports is very low, and current sound and plate back noise can export together along with signal, and the fidelity of music signal obviously declines; During high impedance, output sensitivity is low, and the amplitude of noise signal decay is large, and signal to noise ratio is high, and earphone is not easy to drive, and needs configuration audio frequency amplifier in addition to drive.The high-end earphone products of Sennheiser is all high impedance, wherein HD-800 impedance is 300 Ω, when playing music, needs configuration special audio amplifier to promote earphone, the signal to noise ratio that audio signal exports is very high, and the fidelity of music signal significantly promotes.But heavy audio frequency amplifier is unfavorable for carrying, and can not meet the needs with Mobile audio frequency coordinative composition of equipments, consumer conveniently can not enjoy the music of high-quality when going out.
This problem needs change badly.
Utility model content
The utility model is in order to overcome the deficiencies in the prior art, and object aims to provide a kind of two impedance earphone, and it had both solved a difficult problem for the low and lower tone of signal to noise ratio that audio signal exports, solved again earphone products and carried not convenient problem.
In order to solve above-mentioned technical problem, the basic technical scheme that the utility model proposes is:
A kind of two impedance earphone, comprises loudspeaker in particular and is in serial or parallel connection state of switch modular converter for switching speaker voice coil.
Further, described speaker voice coil adopts the mode coiling that goes with each other all the time to form by two groups of voice coil loudspeaker voice coil enamelled wires, and first group of voice coil loudspeaker voice coil enamelled wire is divided into the first inlet wire and the first outlet, and second group of voice coil loudspeaker voice coil enamelled wire is divided into the second inlet wire and the second outlet; Described speaker voice coil comprises L channel speaker voice coil and R channel speaker voice coil.
Further, described switch transition module employing model is the mechanical slip switch of SSSS2.
Further, described switch transition module comprises two mechanical slip switches, first mechanical slip switch and the second mechanical slip switch all have four contacts, the first mechanical slip switch and the electrical connection of L channel speaker voice coil, the second mechanical slip switch and the electrical connection of R channel speaker voice coil.
Further, described first contact of the first mechanical slip switch is connected with the first inlet wire of L channel speaker voice coil, second contact is connected with the second inlet wire of L channel speaker voice coil, 3rd contact is connected with the first outlet of L channel speaker voice coil, and the 4th contact is connected with the second outlet of L channel speaker voice coil.
Further, described first contact of the second mechanical slip switch is connected with the first inlet wire of R channel speaker voice coil, second contact is connected with the second inlet wire of R channel speaker voice coil, 3rd contact is connected with the first outlet of R channel speaker voice coil, and the 4th contact is connected with the second outlet of R channel speaker voice coil.
Further, described earphone also comprises audio signal input module and audio frequency power amplifier module, audio signal input module produces two-way left channel audio signal stream and two-way right channel audio signal stream, audio frequency power amplifier module comprises L channel power amplifier module and R channel power amplifier module, first via left channel audio signal stream input L channel power amplifier module, the second road left channel audio signal flows through the first mechanical slip switch input L channel speaker voice coil; First via right channel audio signal stream input R channel power amplifier module, the second road right channel audio signal flows through the second mechanical slip switch input R channel speaker voice coil; L channel power amplifier module produces the first audio amplification signal, R channel power amplifier module produces the second audio amplification signal, first audio amplification signal is by the first mechanical slip switch input L channel speaker voice coil, and the second audio amplification signal is by the second mechanical slip switch input R channel speaker voice coil.
Further, described audio frequency power amplifier module adopts model to be the audio frequency amplifier of TPA6021A4.
The beneficial effects of the utility model are: earphone horn voice coil loudspeaker voice coil is when manufacturing, and voice coil loudspeaker voice coil enamelled wire adopts the design that goes with each other all the time, and voice coil leads outlet direction becomes level 180 degree, and loudspeaker are two impedances.Earphone utilizes switch transition module that two groups of voice coil loudspeaker voice coils are switched to parallel connection or series connection, and during parallel connection, namely voice coil loudspeaker voice coil is Low ESR, audio signal Direct driver sound horn; During series connection, namely voice coil loudspeaker voice coil is high impedance, and audio signal is after audio frequency power amplifier module is amplified, and drive sound horn, now the signal to noise ratio of audio signal doubles than during Low ESR, and signal fidelity also improves greatly.
Accompanying drawing explanation
Fig. 1 is the theory structure schematic diagram of the present embodiment earphone.
Fig. 2 is the planar structure schematic diagram of the present embodiment loudspeaker.
Fig. 3 is the electrical block diagram of the present embodiment earphone.
Embodiment
Be described further below with reference to accompanying drawing 1 to 3 pair of the utility model, but protection range of the present utility model should do not limited with this.For convenience of description and understand the technical solution of the utility model, below illustrate that the orientation that the noun of locality used all is shown with accompanying drawing is as the criterion.
As shown in Figure 1, two impedance earphones of the present embodiment comprise loudspeaker, switch transition module, audio signal input module and audio frequency power amplifier module.Audio signal input module respectively with audio frequency power amplifier module and switch transition model calling, audio frequency power amplifier module is connected with loudspeaker by switch transition module.
As shown in Figure 2, speaker voice coil adopts the mode coiling that goes with each other all the time to form by two groups of voice coil loudspeaker voice coil enamelled wires, and voice coil leads outlet direction becomes level 180 degree.First group of voice coil loudspeaker voice coil enamelled wire is divided into the first inlet wire and the first outlet, and second group of voice coil loudspeaker voice coil enamelled wire is divided into the second inlet wire and the second outlet.Speaker voice coil comprises L channel speaker voice coil LY and R channel speaker voice coil RY, as shown in Figure 3, therefore, first group of voice coil loudspeaker voice coil enamelled wire of the present embodiment L channel speaker voice coil LY is divided into the first inlet wire LY11 and the first outlet LY12, and second group of voice coil loudspeaker voice coil enamelled wire is divided into the second inlet wire LY21 and the second outlet LY22.First group of voice coil loudspeaker voice coil enamelled wire of R channel speaker voice coil RY is divided into the first inlet wire RY11 and the first outlet RY12, and second group of voice coil loudspeaker voice coil enamelled wire is divided into the second inlet wire RY21 and the second outlet RY22.During general voice coil loudspeaker voice coil coiling, inlet wire is positive pole, and outlet is negative pole, and therefore the first inlet wire LY11 of L channel speaker voice coil LY and the second inlet wire LY21 is electrode line, and the first outlet LY12 and the second outlet LY22 is negative line.In like manner, the first inlet wire RY11 and the second inlet wire RY21 of R channel speaker voice coil RY are electrode line, and the first outlet RY12 and the second outlet RY22 is negative line.Voice coil loudspeaker voice coil is inherently equivalent to an inductance, i.e. an impedance.Switch transition module switching speaker voice coil is herein in serial or parallel connection state and refers to:
When voice coil loudspeaker voice coil is in parallel connection, on the one hand, for L channel speaker voice coil LY, second inlet wire LY21 of the first inlet wire LY11 and second group voice coil loudspeaker voice coil enamelled wire of first group of voice coil loudspeaker voice coil enamelled wire is connected in parallel, namely electrode line is connected with electrode line, second outlet LY22 of the first outlet LY12 and second group voice coil loudspeaker voice coil enamelled wire of first group of voice coil loudspeaker voice coil enamelled wire is connected in parallel, and namely negative line is connected with negative line; On the other hand, for R channel speaker voice coil RY, second inlet wire RY21 of the first inlet wire RY11 and second group voice coil loudspeaker voice coil enamelled wire of first group of voice coil loudspeaker voice coil enamelled wire is connected in parallel, namely electrode line is connected with electrode line, second outlet RY22 of the first outlet RY12 and second group voice coil loudspeaker voice coil enamelled wire of first group of voice coil loudspeaker voice coil enamelled wire is connected in parallel, and namely negative line is connected with negative line.
When voice coil loudspeaker voice coil is in series connection, on the one hand, for L channel speaker voice coil LY, the LY22 of the first inlet wire LY11 and second group voice coil loudspeaker voice coil enamelled wire of first group of voice coil loudspeaker voice coil enamelled wire is connected in series, namely electrode line is connected with negative line, second inlet wire LY21 of the first outlet LY12 and second group voice coil loudspeaker voice coil enamelled wire of first group of voice coil loudspeaker voice coil enamelled wire is connected in series, and namely negative line is connected with electrode line.
According to Ohm's law: series electrical resistive is large, and parallel resistance diminishes.
As shown in Figure 3, switch transition module comprises two mechanical slip switches, and wherein, switch transition module employing model is the mechanical slip switch of SSSS2.First mechanical slip switch S 1 and the second mechanical slip switch S 2 all have four contacts, and the first mechanical slip switch S 1 and L channel speaker voice coil LY are electrically connected, and the second mechanical slip switch S 2 and R channel speaker voice coil RY are electrically connected.Concrete, first contact 11 of the first mechanical slip switch S 1 is connected with the first inlet wire LY11 of L channel speaker voice coil LY, second contact 12 is connected with the second inlet wire LY21 of L channel speaker voice coil, 3rd contact 13 is connected with the first outlet LY12 of L channel speaker voice coil LY, and the 4th contact 14 is connected with the second outlet LY22 of L channel speaker voice coil LY.
As shown in Figure 3, first contact 21 of the second mechanical slip switch S 2 is connected with the first inlet wire RY11 of R channel speaker voice coil RY, second contact 22 is connected with the second inlet wire RY21 of R channel speaker voice coil RY, 3rd contact 23 is connected with the first outlet RY12 of R channel speaker voice coil RY, and the 4th contact 24 is connected with the second outlet RY22 of R channel speaker voice coil RY.
What deserves to be explained is, the voice coil loudspeaker voice coil of L channel speaker voice coil LY or R channel speaker voice coil RY is mainly switched to series connection or parallel connection by switch transition module here, although the present embodiment adopts mechanical linkage to switch, the voice coil loudspeaker voice coil of electronic switch mode just L channel speaker voice coil LY or R channel speaker voice coil RY also can be adopted to be switched to series connection or parallel connection.No matter adopt which kind of diverter switch mode; as long as this switch is to the voice coil loudspeaker voice coil of L channel speaker voice coil LY or R channel speaker voice coil RY is switched to series connection or parallel connection; this kind is adopted to conceive; all should be appreciated that the inspiration of having used for reference the present embodiment, therefore it all falls in the present embodiment protection range.
From Fig. 1 and 3, the ground end G of audio signal input module 100 is connected to the 3rd contact 13 of the first mechanical slip switch S 1 and the 3rd contact 23 of the second mechanical slip switch S 2 respectively.Audio signal input module 100 produces two-way left channel audio signal stream L and two-way right channel audio signal stream R, audio frequency power amplifier module 200 comprises L channel power amplifier module PL and R channel power amplifier module PR, first via left channel audio signal stream input L channel power amplifier module PL, the second road left channel audio signal flows through the first mechanical slip switch S 1 and inputs L channel speaker voice coil LY.Particularly, the left channel signals line in audio signal input module 100 is connected with the first contact 11 of L channel power amplifier module PL and the first mechanical slip switch S 1 respectively.First via right channel audio signal stream input R channel power amplifier module, the second road right channel audio signal flows through the second mechanical slip switch S 2 and inputs R channel speaker voice coil RY.Concrete, the right-channel signals line in audio signal input module 100 is connected with the first contact 21 of R channel power amplifier module PR and the second mechanical slip switch S 2 respectively.L channel power amplifier module produces the first audio amplification signal, R channel power amplifier module produces the second audio amplification signal, first audio amplification signal inputs L channel speaker voice coil LY by the first mechanical slip switch S 1, and the second audio amplification signal inputs R channel speaker voice coil RY by the second mechanical slip switch S 2.Wherein, audio frequency power amplifier module adopts model to be the audio frequency amplifier of TPA6021A4.
The operation principle of the present embodiment:
1, when speaker voice coil is switched to parallel connection by switch transition module, first contact 11 of the first mechanical slip switch S 1 is connected with the second contact 12,3rd contact 13 is connected with the 4th contact 14, namely the first inlet wire LY11 of L channel speaker voice coil LY is connected with the second inlet wire LY21, first outlet LY12 is connected with the second outlet LY22, left channel signals is inputted by the first contact 11 and the 3rd contact 13, and then promotes L channel voice coil loudspeaker voice coil LY sounding.
In like manner can obtain, first contact 21 of the second mechanical slip switch S 2 is connected with the second contact 22,3rd contact 23 is connected with the 4th contact 24, namely the first inlet wire RY11 of R channel speaker voice coil RY is connected with the second inlet wire RY21, first outlet RY12 is connected with the second outlet RY22, right-channel signals is inputted by the first contact 21 and the 3rd contact 23, and then promotes R channel voice coil loudspeaker voice coil RY sounding.
2, when speaker voice coil is switched to series connection by switch transition module, first contact 11 of the first mechanical slip switch S 1 is connected with the 4th contact 14, second contact 12 is connected with the 3rd contact 13, namely the first inlet wire LY11 of L channel speaker voice coil LY is connected with the second outlet LY22, second inlet wire LY21 is connected with the first outlet LY12, left channel signals, after L channel power amplifier module PL amplifies, is inputted by the second contact 12 and the 3rd contact 13, and then promotes L channel voice coil loudspeaker voice coil LY sounding.
In like manner can obtain, first contact 21 of the second mechanical slip switch S 2 is connected with the 4th contact 24, second contact 22 is connected with the 3rd contact 23, namely the first inlet wire RY11 of R channel speaker voice coil RY is connected with the second inlet wire RY22, second inlet wire RY21 is connected with the first outlet RY12, right-channel signals, after R channel power amplifier module PR amplifies, is inputted by the second contact 22 and the 3rd contact 23, and then promotes R channel voice coil loudspeaker voice coil RY sounding.
In sum, the present embodiment earphone adopts the earphone horn unit of two impedance, earphone horn adopts two impedance when designing, speaker voice coil is drawn by two groups of enamelled wires, is Low ESR time in parallel, it is high impedance during series connection, switch transition is adopted during series and parallel connections Design of State, time in parallel, audio frequency apparatus Direct driver sound horn, during series connection, after the audio frequency power amplifier module of audio signal through earphone configures amplifies process, drive sound horn again; Therefore, the utility model had both solved the problem that signal to noise ratio is low and signal fidelity is not high that audio signal exports, and solved again the problem of product carrying convenience, met the demand supporting with audio ambulatory device.
The announcement of book and instruction according to the above description, the utility model those skilled in the art can also change above-mentioned execution mode and revise.Therefore, the utility model is not limited to embodiment disclosed and described above, also should fall in the protection range of claim of the present utility model modifications and changes more of the present utility model.In addition, although employ some specific terms in this specification, these terms just for convenience of description, do not form any restriction to the utility model.
Claims (4)
1. a two impedance earphone, is characterized in that: comprise loudspeaker and be in serial or parallel connection state of switch modular converter for switching speaker voice coil; Described speaker voice coil adopts the mode coiling that goes with each other all the time to form by two groups of voice coil loudspeaker voice coil enamelled wires, and first group of voice coil loudspeaker voice coil enamelled wire is divided into the first inlet wire and the first outlet, and second group of voice coil loudspeaker voice coil enamelled wire is divided into the second inlet wire and the second outlet; Described speaker voice coil comprises L channel speaker voice coil and R channel speaker voice coil; Described switch transition module comprises two mechanical slip switches, first mechanical slip switch and the second mechanical slip switch all have four contacts, first mechanical slip switch and the electrical connection of L channel speaker voice coil, the second mechanical slip switch and the electrical connection of R channel speaker voice coil; Described first contact of the first mechanical slip switch is connected with the first inlet wire of L channel speaker voice coil, second contact is connected with the second inlet wire of L channel speaker voice coil, 3rd contact is connected with the first outlet of L channel speaker voice coil, and the 4th contact is connected with the second outlet of L channel speaker voice coil; Described first contact of the second mechanical slip switch is connected with the first inlet wire of R channel speaker voice coil, second contact is connected with the second inlet wire of R channel speaker voice coil, 3rd contact is connected with the first outlet of R channel speaker voice coil, and the 4th contact is connected with the second outlet of R channel speaker voice coil.
2. the two impedance earphone of one according to claim 1, is characterized in that: described switch transition module employing model is the mechanical slip switch of SSSS2.
3. the two impedance earphone of one according to claim 1, it is characterized in that: described earphone also comprises audio signal input module and audio frequency power amplifier module, audio signal input module produces two-way left channel audio signal stream and two-way right channel audio signal stream, audio frequency power amplifier module comprises L channel power amplifier module and R channel power amplifier module, first via left channel audio signal stream input L channel power amplifier module, the second road left channel audio signal flows through the first mechanical slip switch input L channel speaker voice coil; First via right channel audio signal stream input R channel power amplifier module, the second road right channel audio signal flows through the second mechanical slip switch input R channel speaker voice coil; L channel power amplifier module produces the first audio amplification signal, R channel power amplifier module produces the second audio amplification signal, first audio amplification signal is by the first mechanical slip switch input L channel speaker voice coil, and the second audio amplification signal is by the second mechanical slip switch input R channel speaker voice coil.
4. the two impedance earphone of one according to claim 3, is characterized in that: described audio frequency power amplifier module adopts model to be the audio frequency amplifier of TPA6021A4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520672239.3U CN205213009U (en) | 2015-09-01 | 2015-09-01 | Two impedance earphones |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520672239.3U CN205213009U (en) | 2015-09-01 | 2015-09-01 | Two impedance earphones |
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| CN205213009U true CN205213009U (en) | 2016-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520672239.3U Expired - Fee Related CN205213009U (en) | 2015-09-01 | 2015-09-01 | Two impedance earphones |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106559725A (en) * | 2016-10-31 | 2017-04-05 | 杭州联络互动信息科技股份有限公司 | A kind of a kind of circuit and sound equipment of dynamic regulation multi-loudspeaker group impedance |
-
2015
- 2015-09-01 CN CN201520672239.3U patent/CN205213009U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106559725A (en) * | 2016-10-31 | 2017-04-05 | 杭州联络互动信息科技股份有限公司 | A kind of a kind of circuit and sound equipment of dynamic regulation multi-loudspeaker group impedance |
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