CN109889943B - Dual-microphone earphone controlled by switch - Google Patents
Dual-microphone earphone controlled by switch Download PDFInfo
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- CN109889943B CN109889943B CN201910313680.5A CN201910313680A CN109889943B CN 109889943 B CN109889943 B CN 109889943B CN 201910313680 A CN201910313680 A CN 201910313680A CN 109889943 B CN109889943 B CN 109889943B
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Abstract
The invention discloses a switch-switching-controlled double-microphone earphone which comprises an earphone body, a wire control device, a first microphone MK1 and a second microphone MK2, wherein the wire control device comprises an MIC interface, a control circuit, a function key circuit and a microphone switching circuit; the earphone body is connected with the MIC interface, the control chip U1 of the control circuit is connected with the function key circuit, the function key circuit is connected with the MIC interface, the multi-microphone switch converter of the microphone switching circuit is provided with a public end, a first selection end, a second selection end and a third selection end, the public end is connected with one end of the MIC interface, the first selection end is connected with the control chip U1, the second selection end is connected with the control chip U1 through a first microphone MK1, the third selection end is connected with the control chip U1 through a second microphone MK2, and the control chip U1 is connected with the other end of the MIC interface; the three states of using the first microphone MK1 and the second microphone MK2 and not using the two microphones are switched freely, so that the microphone is convenient to use, meets different pickup requirements, and has a wide application range.
Description
Technical Field
The invention relates to the technology of the earphone field, in particular to a switch-switching-controlled double-microphone earphone which is mainly used for game earphones.
Background
The traditional game earphone is generally provided with only one conversation microphone, and the earphone can not well meet the real-time intercom requirement of electronic athletes.
Later, a new scheme has been studied, which detachably sets the second microphone on the original earphone, so that the user can detach the second microphone or install the second microphone according to the actual use requirement to meet the better pickup requirement.
However, this type of disassembly is cumbersome to operate and the microphone cannot be turned off completely, resulting in an undesired pick-up.
Therefore, a new technical solution is needed to solve the above problems.
Disclosure of Invention
In view of the above, the present invention aims at overcoming the drawbacks of the prior art, and it is a primary object of the present invention to provide a switch-controlled dual-microphone earphone, which can simply and freely switch between three states of using a first microphone MK1, a second microphone MK2 and not using two microphones through a multi-microphone switch converter, and is convenient to use, and suitable for different pickup requirements, and has a wide application range.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the double-microphone earphone comprises an earphone body, a wire control device, a first microphone MK1 and a second microphone MK2, wherein the wire control device comprises an MIC interface, a control circuit, a function key circuit and a microphone switching circuit;
the earphone body is connected with the MIC interface, the control circuit comprises a control chip U1, the control chip U1 is connected with a function key circuit, the function key circuit is connected with the MIC interface, the microphone switching circuit comprises a multi-microphone switch converter, the multi-microphone switch converter is provided with a public end, a first selection end, a second selection end and a third selection end, the public end is connected with the MIC interface, the first selection end is connected with the control chip U1, the second selection end is connected with the control chip U1 through a first microphone MK1, and the third selection end is connected with the control chip U1 through a second microphone MK 2;
in the first use state, the public end is communicated with the second selection end, and the MIC interface, the control chip U1 and the first microphone MK1 form a loop, so that recording signals received by the first microphone MK1 are fed back to the control chip U1;
in the second use state, the public end is communicated with the third selection end, and the MIC interface, the control chip U1 and the second microphone MK2 form a loop, so that recording signals received by the second microphone MK2 are fed back to the control chip U1;
in the third use state, the public end is communicated with the first selection end, the MIC interface and the control chip U1 form a loop, and the first microphone MK1 and the second microphone MK2 do not work.
As a preferred solution, the common terminal is connected to one end of the MIC interface through a resistor R3.
As a preferable mode, the resistor R15 is connected in parallel to both ends of the second microphone MK 2.
As a preferred solution, the control circuit further includes a capacitor C1, and the control chip U1 has a control pin 1 to a control pin 6, where:
the control pin 1 is grounded through the capacitor C1, the control pin 2 is connected with the other end of the MIC interface and both are grounded, the control pin 3 is connected with the first selection end, the second selection end is connected with the control pin 3 through the second microphone MK2, the third selection end is connected with the control pin 3 through the second microphone MK2, the control pin 4 and the control pin 6 are both connected with the function key circuit, and one end of the MIC interface is also connected with the control pin 5.
As a preferred solution, the control pin 5 is grounded via a capacitor C2.
As a preferred solution, the control pin 4 is connected to the function key circuit through an impedance circuit, and the impedance circuit includes a resistor R4 and a capacitor C3 connected in series.
As a preferred solution, the control pin 6 is connected to a function key circuit through a resistor R2.
As a preferred solution, the function key circuit includes a play/pause key S1, the play/pause key S1 is connected in parallel to two ends of the MIC interface, one end of the play/pause key S1 is connected to the control pin 6 through the resistor R2, and one end of the play/pause key S1 is also connected to the control pin 4.
As a preferable scheme, the function key circuit includes a volume increasing key S2 and a resistor R1, one end of the volume increasing key S2 is connected to the control pin 6 through the resistor R1 and the resistor R2, one end of the volume increasing key S2 is further connected to the control pin 4, and the other end of the volume increasing key S2 is grounded.
As a preferred solution, the function key circuit includes a volume reduction key S3, where one end of the volume reduction key S3 is further connected to the control pin 4 through a resistor R2, and the other end of the volume reduction key S3 is grounded.
Compared with the prior art, the invention has obvious advantages and beneficial effects, in particular, the technical proposal shows that the invention mainly uses the control chip U1 and the multi-microphone switch converter to freely switch the three states of using the first microphone MK1, the second microphone MK2 and not using two microphones, is convenient to use, meets different pickup requirements and has wide application range;
secondly, the impedance circuit plays an impedance role on the control pin 4, so that the signal fidelity is ensured to be improved in the key operation process;
moreover, the power consumption of the first microphone MK1 and the second microphone MK2 can be adjusted through the capacitor R3 and the resistor R15, so that the cost is reduced;
and the whole circuit structure design is ingenious and reasonable, compared with the double-microphone game earphone in the prior art, the circuit structure is simplified, and the circuit design cost is saved.
In order to more clearly illustrate the structural features and efficacy of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and examples.
Drawings
FIG. 1 is a control schematic block diagram of an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of an embodiment of the present invention.
The attached drawings are used for identifying and describing:
10. MIC interface 20 and function key circuit
30. A multi-tap switching converter.
Detailed Description
As shown in fig. 1 and fig. 2, a switch-controlled dual-microphone earphone includes an earphone body, a wire control device, a first microphone MK1 and a second microphone MK2, where the wire control device includes a MIC interface 10, a control circuit, a function key circuit 20 and a microphone switching circuit, in this embodiment, the second microphone MK2 is disposed on the earphone body, the first microphone MK1 is disposed on the wire control device, and for the selection of the first microphone MK1, the working voltage under average power consumption is 2.1V, the working current needs to be 350 microamps in a mute state, and the working current needs to be 450 microamps in a 70 db working state.
The earphone body is connected with the MIC interface 10, the control circuit comprises a control chip U1, and the Android system and the IOS system can be compatible through the control chip U1. The control chip U1 is connected with the function key circuit 20, the function key circuit 20 is connected with the MIC interface 10, the microphone switching circuit comprises a multi-microphone switch converter 30, the multi-microphone switch converter 30 is provided with a public end, a first selection end, a second selection end and a third selection end, the public end is connected with one end of the MIC interface 10, and preferably, the public end is connected with one end of the MIC interface 10 through a resistor R3. The first selection end is connected with the control chip U1, the second selection end is connected with the control chip U1 through a first microphone MK1, the third selection end is connected with the control chip U1 through a second microphone MK2, and the control chip U1 is connected with the other end of the MIC interface 10; the two ends of the second microphone MK2 are connected in parallel with a resistor R15. It should be noted that, the resistor R3 and the resistor R15 are used for adjusting the power consumption of the microphone, wherein the resistance value of the resistor R3 ranges from 0 to 220 ohms, the resistor R15 is preferably 100K ohms, and of course, other values are also possible, and the invention is not limited herein.
In the first use state, the public terminal is communicated with the second selection terminal, and the MIC interface 10, the control chip U1 and the first microphone MK1 form a loop, so that the recording signal received by the first microphone MK1 is fed back to the control chip U1, and functions of the play/pause button S1, the volume increase button S2 and the volume decrease button S3 are normal;
in the second use state, the public terminal is communicated with the third selection terminal, and the MIC interface 10, the control chip U1 and the second microphone MK2 form a loop, so that the recording signal received by the second microphone MK2 is fed back to the control chip U1, and functions of the play/pause button S1, the volume increase button S2 and the volume decrease button S3 are normal;
in the third use state, the common terminal is communicated with the first selection terminal, the MIC interface 10 and the control chip U1 form a loop, the first microphone MK1 and the second microphone MK2 do not work, and functions of the play/pause key S1, the volume up key S2 and the volume down key S3 described below are normal.
In this embodiment, the multi-tap converter 30 employs a three-tap switch SW, where the three-tap switch SW has a switching pin 1 to a switching pin 4, the switching pin 1 is a third selection terminal, the switching pin 2 is a common terminal, the switching pin 3 is a first selection terminal, and the switching pin 4 is a second selection terminal.
In this embodiment, the control circuit further includes a capacitor C1, the control chip U1 has a control pin 1 to a control pin 6, and the control pin 1 is a function of detecting signal difference and judging an add-subtract key; the control pin 3 outputs low level for two microphones and plays a role in reducing working current of the microphones; the control pin 4 outputs a high-frequency carrier wave of 2KHz to realize the function of adding and subtracting keys; the control pin 6 is an input detection terminal.
The control pin 1 is grounded through the capacitor C1, the control pin 2 is connected with the other end of the MIC interface 10 and both are grounded, the control pin 3 is connected with the first selection end, the second selection end is connected with the control pin 3 through the second microphone MK2, the third selection end is connected with the control pin 3 through the second microphone MK2, the control pin 4 and the control pin 6 are both connected with the function key circuit 20, in the embodiment, the control pin 4 is connected with the function key circuit 20 through the impedance circuit, the impedance circuit comprises a resistor R4 and a capacitor C3 which are connected in series, and the resistor R4 and the capacitor C3 which are matched with fixed parameters can play a proper impedance role; the control pin 6 is connected with the function key circuit 20 through a resistor R2. One end of the MIC interface 10 is also connected to the control pin 5, preferably, the control pin 5 is grounded through a capacitor C2, which is beneficial to the retention of power supply of the control chip U1 when power is lost.
The function key circuit 20 includes a play/pause key S1, a volume up key S2, a volume down key S3, and a resistor R1, wherein the play/pause key S1 is connected in parallel to two ends of the MIC interface 10, one end of the play/pause key S1 is connected to the control pin 6 through the resistor R2, and one end of the play/pause key S1 is also connected to the control pin 4. One end of the volume increasing key S2 is connected with the control pin 6 through the resistor R1 and the resistor R2, one end of the volume increasing key S2 is also connected with the control pin 4, and the other end of the volume increasing key S2 is grounded. And one end of the volume reduction key S3 is also connected with the control pin 4 through a resistor R2, and the other end of the volume reduction key S3 is grounded.
The key press function is described generally as follows:
1. pause playing song and video: pressing the play/pause button S1 once, namely pausing the play, and continuing the play when pressing again;
2. selecting the next song: pressing the play/pause button S1 twice in succession listens to the next song;
3. returning to the last song: pressing the play/pause button S1 three times in succession listens to the previous song;
4. fast forward: pressing the play/pause button S1 twice quickly and fast-forwarding without releasing the finger;
5. rollback: the play/pause button S1 is pressed three times quickly and the user can fast withdraw without releasing the finger;
6. volume is turned up: pressing the volume up key S2 once, namely increasing the volume, and keeping the maximum value all the time when the volume reaches the maximum value, wherein the volume is not increased again;
7. the volume is reduced: the volume down key S3 is pressed once, i.e. the volume is reduced, and when the volume reaches a minimum, it is not increased again, and the minimum value is maintained.
The invention mainly uses the control chip U1 and the multi-microphone switch converter to freely switch the states of using the first microphone MK1 and the second microphone MK2 and not using two microphones, thereby being convenient to use, adapting to different pickup requirements and having wide application range;
secondly, the impedance circuit plays an impedance role on the control pin 4, so that the signal fidelity is ensured to be improved in the key operation process;
moreover, the power consumption of the first microphone MK1 and the second microphone MK2 can be adjusted through the capacitor R3 and the resistor R15, so that the cost is reduced;
and the whole circuit structure design is ingenious and reasonable, compared with the double-microphone game earphone in the prior art, the circuit structure is simplified, and the circuit design cost is saved.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical principles of the present invention are still within the scope of the technical solutions of the present invention.
Claims (5)
1. A switch-controlled double-microphone earphone is characterized in that: the earphone comprises an earphone body, a wire control device, a first microphone MK1 and a second microphone MK2, wherein the second microphone MK2 is arranged on the earphone body, and the first microphone MK1 is arranged on the wire control device; the wire control device comprises an MIC interface, a control circuit, a function key circuit and a microphone switching circuit;
the earphone body is connected with an MIC interface, the control circuit comprises a control chip U1, the control chip U1 is connected with a function key circuit, the function key circuit is connected with the MIC interface, the microphone switching circuit comprises a multi-microphone switch converter, the multi-microphone switch converter is provided with a public end, a first selection end, a second selection end and a third selection end, the public end is connected with the MIC interface, the public end is connected with one end of the MIC interface through a resistor R3,
the first selection end is connected with the control chip U1, the second selection end is connected with the control chip U1 through a first microphone MK1, and the third selection end is connected with the control chip U1 through a second microphone MK 2; the two ends of the second microphone MK2 are connected with a resistor R15 in parallel;
the control circuit further comprises a capacitor C1, the control chip U1 is provided with a control pin 1 to a control pin 6, wherein:
the control pin 1 is grounded through a capacitor C1, the control pin 2 is connected with the other end of the MIC interface and both are grounded, the control pin 3 is connected with a first selection end, a second selection end is connected with the control pin 3 through a second microphone MK2, a third selection end is connected with the control pin 3 through the second microphone MK2, the control pins 6 are both connected with a function key circuit, and one end of the MIC interface is also connected with the control pin 5; the control pin 5 is grounded through a capacitor C2;
the control pin 4 is connected with a function key circuit through an impedance circuit, and the impedance circuit comprises a resistor R4 and a capacitor C3 which are connected in series;
in the first use state, the public end is communicated with the second selection end, and the MIC interface, the control chip U1 and the first microphone MK1 form a loop, so that recording signals received by the first microphone MK1 are fed back to the control chip U1;
in the second use state, the public end is communicated with the third selection end, and the MIC interface, the control chip U1 and the second microphone MK2 form a loop, so that recording signals received by the second microphone MK2 are fed back to the control chip U1;
in the third use state, the public end is communicated with the first selection end, the MIC interface and the control chip U1 form a loop, and the first microphone MK1 and the second microphone MK2 do not work.
2. The switch-controlled dual microphone headset of claim 1, wherein: the control pin 6 is connected with a function key circuit through a resistor R2.
3. The switch-controlled dual microphone headset of claim 2, wherein: the function key circuit comprises a play/pause key S1, the play/pause key S1 is connected in parallel with two ends of the MIC interface, one end of the play/pause key S1 is connected with a control pin 6 through a resistor R2, and one end of the play/pause key S1 is also connected with a control pin 4.
4. The switch-controlled dual microphone headset of claim 2, wherein: the function key circuit comprises a volume increasing key S2 and a resistor R1, wherein one end of the volume increasing key S2 is connected with a control pin 6 through the resistor R1 and the resistor R2, one end of the volume increasing key S2 is also connected with a control pin 4, and the other end of the volume increasing key S2 is grounded.
5. The switch-controlled dual microphone headset of claim 2, wherein: the function key circuit comprises a volume reduction key S3, wherein the volume reduction key S3 controls a pin 6, one end of the volume reduction key S3 is also connected with a control pin 4 through a resistor R2, and the other end of the volume reduction key S3 is grounded.
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| CN201910313680.5A CN109889943B (en) | 2019-04-18 | 2019-04-18 | Dual-microphone earphone controlled by switch |
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| CN201910313680.5A CN109889943B (en) | 2019-04-18 | 2019-04-18 | Dual-microphone earphone controlled by switch |
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| CN109889943B true CN109889943B (en) | 2024-04-05 |
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| CN110430498A (en) * | 2019-08-01 | 2019-11-08 | 深圳市睿耳电子有限公司 | A kind of gaming headset line control machine and a kind of gaming headset |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWM253395U (en) * | 2003-07-03 | 2004-12-21 | Zeroplus Technology Co Ltd | Audio device for TV game device |
| KR102317526B1 (en) * | 2015-06-25 | 2021-10-26 | 엘지전자 주식회사 | Headset and controlling mrthod thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200287141Y1 (en) * | 2002-03-29 | 2002-08-30 | 권혁진 | Dual mike earphone |
| CN202873021U (en) * | 2012-09-04 | 2013-04-10 | 深圳天珑无线科技有限公司 | Earphone |
| CN105979423A (en) * | 2016-06-28 | 2016-09-28 | 青岛歌尔声学科技有限公司 | Mute circuit of microphone on earphone, and method |
| CN106028196A (en) * | 2016-07-11 | 2016-10-12 | 歌尔股份有限公司 | Earphone |
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