CN105979423B - Mute circuit and method of microphone on earphone - Google Patents
Mute circuit and method of microphone on earphone Download PDFInfo
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- CN105979423B CN105979423B CN201610496465.XA CN201610496465A CN105979423B CN 105979423 B CN105979423 B CN 105979423B CN 201610496465 A CN201610496465 A CN 201610496465A CN 105979423 B CN105979423 B CN 105979423B
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- microphone
- toggle switch
- earphone
- ground
- signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
Abstract
The invention discloses a mute circuit and a mute method of a microphone on an earphone. The muting circuit includes: a toggle switch, a microphone and a ground resistor are arranged on the earphone; the first end of the toggle switch is grounded through the ground resistor; the second end of the toggle switch is connected with an Audio signal MIC signal of an Audio Jack of the earphone; the third end of the toggle switch is connected with the first end of the microphone; the second end of the microphone is grounded; the second end of the toggle switch is a public end of the toggle switch, so that when the first end and the second end of the toggle switch are connected, the Audio signal MIC signal of the Audio Jack of the earphone is grounded with the ground resistor. The invention can stably realize the mute function of the microphone.
Description
Technical Field
The present invention relates to a muting technology of a terminal earphone, and more particularly, to a muting circuit and method of a microphone on an earphone.
Background
At present, an earphone adapted to a mobile phone has a microphone muting function. In a common microphone muting circuit, a toggle switch is connected in series with a microphone signal line, and when the toggle switch is turned off, the microphone muting is presented.
FIG. 1 is a prior art mute circuit of a microphone, wherein the microphone normally operates when pins 2-3 of a toggle switch are turned on; when the 1-2 pin of the toggle switch is switched on, the Audio MIC signal of the Audio Jack of the earphone is suspended, and the misreading of the state of the mobile phones of different models is easily caused.
That is, when the toggle switch is turned off, the microphone signal line on the mobile phone side is in a floating state. The judgment of the state is different for different models of mobile phones, for example, iphone6 of apple company interprets the state as a headset without a microphone, so that the built-in microphone of the mobile phone is started, and the mute fails, thereby causing poor applicability and stability of the headset.
Disclosure of Invention
The invention provides a muting circuit and a muting method of a microphone on an earphone, which can stably realize the muting function of the microphone.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a muting circuit for a microphone on a headset, comprising:
a toggle switch, a microphone and a ground resistor are arranged on the earphone;
the first end of the toggle switch is grounded through the ground resistor;
the second end of the toggle switch is connected with an Audio signal MIC signal of an Audio Jack of the earphone;
the third end of the toggle switch is connected with the first end of the microphone;
the second end of the microphone is grounded.
The second end of the toggle switch is a public end of the toggle switch, so that when the first end and the second end of the toggle switch are connected, the Audio signal MIC signal of the Audio Jack of the earphone is grounded with the ground resistor.
When the second end and the third end of the toggle switch are connected, the Audio signal MIC signal of the Audio Jack of the earphone is connected with the first end of the microphone.
The resistance value of the ground resistor is consistent with the direct current impedance of the microphone.
The resistance value of the resistance to ground is 2.2K omega.
A method of muting a microphone of an earphone, comprising:
grounding a first end of the toggle switch through the ground resistor;
connecting the second end of the toggle switch with an Audio signal MIC signal of an Audio Jack of an earphone;
connecting the third end of the toggle switch with the first end of the microphone;
taking the second end of the toggle switch as a public end of the toggle switch;
grounding a second end of the microphone.
The method further comprises the following steps:
and connecting the first end and the second end of the toggle switch, so that the MIC signal of the Audio Jack of the earphone is grounded with the ground resistor.
The method further comprises the following steps:
and connecting the second end and the third end of the toggle switch, so that the MIC signal of the earphone Audio Jack Audio Jack is connected with the first end of the microphone.
The embodiment of the invention has the beneficial effects that:
in the above embodiment, because the one end at the toggle switch is connected with the resistance to ground, when the first end and the second end of the toggle switch are switched on, the Audio signal MIC signal of the Audio Jack of the earphone is grounded through the resistance to ground, and the resistance to ground is equivalent to the impedance of a microphone, at this moment, the terminal can consider that the microphone is accessed for a mobile phone, so that the misjudgment of the terminal can not be caused, and the stability of the system is improved. Meanwhile, the resistor replaces the microphone to achieve the same mute function of the microphone. That is to say, when the microphone signal is in the off state, the microphone signal is connected to the ground resistor, so that the mute effect of the microphone is realized, the terminal is ensured to correctly identify the current earphone state, and the condition identification error of the terminal to the earphone caused by the open circuit of the microphone signal line is avoided.
Drawings
FIG. 1 is a schematic diagram of a mute circuit for a microphone on a prior art headset;
fig. 2 is a circuit diagram of a mute circuit of a microphone of an earphone according to the present invention;
fig. 3 is a flow chart of a method for muting a microphone on an earphone according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 2, the mute circuit of a microphone on an earphone according to the present invention includes:
a toggle switch, a microphone arranged on the earphone and a ground resistor R1; the toggle switch is a single-pole double-throw 1P2T toggle switch;
wherein, the first end of the 1P2T toggle switch is grounded through the ground resistor R1;
the second end of the 1P2T toggle switch is connected with an Audio signal MIC signal of an Audio Jack of an earphone;
the third end of the 1P2T toggle switch is connected with the first end of the microphone;
the second end of the microphone is grounded.
The second end of the 1P2T toggle switch is a common end of the toggle switch, so that when the first end and the second end of the 1P2T toggle switch are connected, the Audio signal MIC signal of the Audio Jack of the earphone is grounded with the ground resistance.
In the above embodiment, because the one end at the toggle switch is connected with the resistance to ground, when the first end and the second end of the toggle switch are switched on, the Audio signal MIC signal of the Audio Jack of the earphone is grounded through the resistance to ground, and the resistance to ground is equivalent to the impedance of a microphone, at this moment, the terminal can consider that the microphone is accessed for a mobile phone, so that the misjudgment of the terminal can not be caused, and the stability of the system is improved. Meanwhile, the resistor replaces the microphone to achieve the same mute function of the microphone. That is to say, when the microphone signal is in the off state, the microphone signal is connected to the ground resistor, so that the mute effect of the microphone is realized, the terminal is ensured to correctly identify the current earphone state, and the condition identification error of the terminal to the earphone caused by the open circuit of the microphone signal line is avoided.
That is to say, when the microphone signal is in the disconnection state, the microphone signal is connected to the ground resistor, so that the mute effect of the microphone is realized, the terminal can be ensured to correctly identify the current earphone state, and the condition identification error of the terminal to the earphone caused by the disconnection of the microphone signal line is avoided.
When the second end and the third end of the 1P2T toggle switch are connected, the Audio signal MIC signal of the earphone Audio Jack is connected with the first end of the microphone.
The resistance value of the resistance to ground R1 is matched according to the dc impedance of the microphone. The method specifically comprises the following steps: the resistance value of the ground resistor is consistent with the direct current impedance of the microphone. For example, the resistance value of the resistance to ground is 2.2K Ω. That is, the resistance of R1 can be modified according to the dc impedance of different microphones to match different microphone types of headphones.
In the above embodiment, the first terminal of the toggle switch is connected to a ground resistor, and when the pins 1-2 (the first terminal and the second terminal) of the toggle switch are turned on, the MIC signal of the Audio Jack of the earphone is connected to the ground via the 2.2K Ω resistor. 2.2K omega is equivalent to the impedance of the microphone, and the terminal, for example, a mobile phone, still has the microphone to be connected at the moment, so that misjudgment of the terminal is not caused, and the stability of the system is improved. Meanwhile, the resistor replaces the microphone to achieve the same mute function of the microphone. That is to say, when the microphone signal is in the off state, the microphone signal is connected to the 2.2K Ω resistor to the ground, so as to realize the mute effect of the microphone, ensure the mobile phone to correctly identify the current earphone state, and avoid the condition identification of the mobile phone to the earphone caused by the open circuit of the microphone signal line.
The invention relates to a microphone mute circuit of a wired earphone, which comprises a 1P2T toggle switch, a microphone and a resistor. The connection relation of each part is that the common end of the toggle switch is connected with a microphone signal line of the earphone Audio Jack, and the other two ends of the toggle switch are respectively connected with an earphone microphone and a resistor. The function of the toggle switch is to turn on or off the microphone signal, and the function of the resistor is to act as a mute microphone when the toggle switch is turned off.
Through the improved circuit of the toggle switch and the resistor, the resistor is used for replacing the microphone when the microphone of the earphone is in mute state, so that the mobile phone judges that the microphone is still connected, but the function of the microphone is not actually realized, the aim of mute is achieved, misjudgment of the state of the earphone by the mobile phones of partial models can be avoided, and the applicability and the stability of the product are improved.
As shown in fig. 3, a method for muting a microphone of an earphone according to the present invention includes:
step 31, grounding the first end of the 1P2T toggle switch through the ground resistor; connecting a second end of the 1P2T toggle switch with an Audio signal MIC signal of an Audio Jack of an earphone; connecting the third end of the 1P2T toggle switch with the first end of the microphone; a second end of the 1P2T toggle switch is used as a common end of the toggle switch;
step 32, grounding the second end of the microphone.
And step 33, connecting the first end and the second end of the 1P2T toggle switch, so that the MIC signal of the earphone Audio Jack Audio Jack is grounded with the ground resistor.
The method further comprises the following steps:
and step 34, connecting the second end and the third end of the 1P2T toggle switch, so that the MIC signal of the earphone Audio Jack is connected with the first end of the microphone.
In the above embodiment, because the one end at the toggle switch is connected with the resistance to ground, when the first end and the second end of the toggle switch are switched on, the Audio signal MIC signal of the Audio Jack of the earphone is grounded through the resistance to ground, and the resistance to ground is equivalent to the impedance of a microphone, at this moment, the terminal can consider that the microphone is accessed for a mobile phone, so that the misjudgment of the terminal can not be caused, and the stability of the system is improved. Meanwhile, the resistor replaces the microphone to achieve the same mute function of the microphone. That is to say, when the microphone signal is in the off state, the microphone signal is connected to the ground resistor, so that the mute effect of the microphone is realized, the terminal is ensured to correctly identify the current earphone state, and the condition identification error of the terminal to the earphone caused by the open circuit of the microphone signal line is avoided.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (8)
1. A muting circuit for a microphone on a headset, comprising:
a toggle switch, a microphone and a ground resistor are arranged on the earphone;
the first end of the toggle switch is grounded through the ground resistor, wherein the toggle switch is a single-pole double-throw 1P2T toggle switch;
the second end of the toggle switch is connected with an Audio signal MIC signal of an Audio Jack of the earphone;
the third end of the toggle switch is connected with the first end of the microphone;
the second end of the microphone is grounded;
the second end of the toggle switch is a public end of the toggle switch, so that when the first end and the second end of the toggle switch are connected, the Audio signal MIC signal of the Audio Jack of the earphone is grounded with the ground resistor.
2. The circuit of claim 1, wherein when the second terminal and the third terminal of the toggle switch are connected, the Audio signal MIC signal of the earphone Audio Jack is connected to the first terminal of the microphone.
3. The circuit of claim 1, wherein the resistance to ground is consistent with the dc impedance of the microphone.
4. A circuit according to claim 3, characterized in that the resistance to ground is 2.2K Ω.
5. A method of muting a microphone on a headset using the circuit of any of claims 1-4, comprising:
grounding a first end of the toggle switch through the ground resistor;
connecting the second end of the toggle switch with an Audio signal MIC signal of an Audio Jack of an earphone;
connecting the third end of the toggle switch with the first end of the microphone;
taking the second end of the toggle switch as a public end of the toggle switch;
grounding a second end of the microphone;
and connecting the first end and the second end of the toggle switch, so that the Audio signal MIC signal of the Audio Jack of the earphone is grounded with a ground resistor.
6. The method of claim 5, further comprising:
and connecting the second end and the third end of the toggle switch, so that the MIC signal of the earphone Audio Jack Audio Jack is connected with the first end of the microphone.
7. The method of claim 5, wherein the resistance to ground is consistent with the DC impedance of the microphone.
8. The method of claim 7, wherein the resistance to ground is 2.2K Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610496465.XA CN105979423B (en) | 2016-06-28 | 2016-06-28 | Mute circuit and method of microphone on earphone |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610496465.XA CN105979423B (en) | 2016-06-28 | 2016-06-28 | Mute circuit and method of microphone on earphone |
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| CN105979423A CN105979423A (en) | 2016-09-28 |
| CN105979423B true CN105979423B (en) | 2022-04-12 |
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| CN109889943B (en) * | 2019-04-18 | 2024-04-05 | 东莞市亿瑞特电子有限公司 | Dual-microphone earphone controlled by switch |
| CN112820046A (en) * | 2021-01-27 | 2021-05-18 | 上海商米科技集团股份有限公司 | Cash register with selectable starting mode and starting selection method |
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| CN103118191A (en) * | 2013-01-28 | 2013-05-22 | Tcl通讯（宁波）有限公司 | Using control method and mobile terminal for iPhone wire control earphone |
| CN104301521A (en) * | 2014-09-17 | 2015-01-21 | 浙江铭众生物医学创业投资有限公司 | Modulation mode and communication circuit based on mobile phone audio interface and communication method of communication circuit based on mobile phone audio interface |
| CN105187992A (en) * | 2015-09-24 | 2015-12-23 | 青岛歌尔声学科技有限公司 | Microphone switch control circuit and method |
| CN105635878A (en) * | 2016-02-03 | 2016-06-01 | 深圳市汇顶科技股份有限公司 | Switching method of earphone working modes and earphone |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8073153B2 (en) * | 2007-02-21 | 2011-12-06 | Knowles Electronics, Llc | System and method for engaging in conversation while using an earphone |
| CN205812321U (en) * | 2016-06-28 | 2016-12-14 | 青岛歌尔声学科技有限公司 | A kind of mute circuit of the mike on earphone |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103118191A (en) * | 2013-01-28 | 2013-05-22 | Tcl通讯（宁波）有限公司 | Using control method and mobile terminal for iPhone wire control earphone |
| CN104301521A (en) * | 2014-09-17 | 2015-01-21 | 浙江铭众生物医学创业投资有限公司 | Modulation mode and communication circuit based on mobile phone audio interface and communication method of communication circuit based on mobile phone audio interface |
| CN105187992A (en) * | 2015-09-24 | 2015-12-23 | 青岛歌尔声学科技有限公司 | Microphone switch control circuit and method |
| CN105635878A (en) * | 2016-02-03 | 2016-06-01 | 深圳市汇顶科技股份有限公司 | Switching method of earphone working modes and earphone |
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Effective date of registration: 20230424 Address after: 233000 85 Shengli Road, bengshan mountain, Bengbu, Anhui Patentee after: Bengbu wild hill network technology Co.,Ltd. Address before: 266061 5, 3 building, Fortune Plaza, 18 Qinling Mountains Road, Laoshan District, Qingdao, Shandong. Patentee before: QINGDAO GOERTEK TECHNOLOGY Co.,Ltd. |