CN208285495U - A kind of earphone - Google Patents
A kind of earphone Download PDFInfo
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- CN208285495U CN208285495U CN201820655933.8U CN201820655933U CN208285495U CN 208285495 U CN208285495 U CN 208285495U CN 201820655933 U CN201820655933 U CN 201820655933U CN 208285495 U CN208285495 U CN 208285495U
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- 238000000926 separation method Methods 0.000 claims description 12
- 230000000670 limiting effect Effects 0.000 claims description 11
- 230000007613 environmental effect Effects 0.000 claims description 8
- 230000003247 decreasing effect Effects 0.000 claims description 4
- 230000008859 change Effects 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 description 18
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000036961 partial effect Effects 0.000 description 4
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- 238000004891 communication Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
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- 230000002159 abnormal effect Effects 0.000 description 1
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Abstract
The utility model embodiment discloses a kind of earphone, comprising: microphone and the adjusting circuit for adjusting the sensitivity of microphone by change resistance value；Wherein, the first connecting pin of the microphone is connect with Mike's line of the earphone；The ground terminal of the microphone is grounded；Described one end for adjusting circuit is connect with the second connection end of the microphone, other end ground connection.Technical solution provided by the embodiment of the utility model, the resistance value by changing adjusting circuit can adjust the sensitivity of microphone, to improve the speech quality of user.
Description
Technical Field
The utility model belongs to the technical field of wearable equipment, specifically speaking relates to an earphone.
Background
At present, earphones become an indispensable accessory for people to use intelligent terminals. When watching video or listening to music, the sound can be obtained through the earphone. Meanwhile, the earphone is also provided with an MIC (microphone), and a user can carry out voice communication through the microphone.
However, in the existing earphone, the sensitivity of the MIC is fixed, and a user cannot adjust the sensitivity according to the needs of the user. For example, in a very quiet environment, the user cannot improve the sensitivity of the MIC; when in a noisy environment, the user cannot influence the call quality by reducing the sensitivity of the MIC.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the present invention provides an earphone, which can manually or automatically adjust the sensitivity of a microphone, thereby improving the communication quality.
For solving the technical problem among the prior art, the embodiment of the utility model provides an earphone is provided, include: a microphone and an adjusting circuit for adjusting the sensitivity of the microphone by changing a resistance value; wherein,
the first connecting end of the microphone is connected with a microphone wire of the earphone;
the grounding end of the microphone is grounded;
one end of the adjusting circuit is connected with the second connecting end of the microphone, and the other end of the adjusting circuit is grounded.
Optionally, the adjusting circuit is a manual adjusting circuit, including: the circuit comprises a manual adjustable resistor, a first fixed capacitor and a fixed resistor;
one end of the fixed capacitor is connected with the second connecting end of the microphone, and the other end of the fixed capacitor is connected with the movable end of the manual adjustable resistor;
the fixed end of the manual adjustable resistor is connected with one end of the fixed resistor;
the other end of the fixed resistor is grounded.
Optionally, the manually adjustable resistor comprises a sliding adjustable resistor or a screw adjustable resistor.
Optionally, the adjusting circuit is an automatic adjusting circuit, including: the second fixed capacitor, the potentiometer, the processor and an auxiliary microphone are used for collecting environmental audio signals; wherein,
two ends of the second fixed capacitor are respectively connected with the second connecting end of the microphone and the first connecting end of the potentiometer;
the power supply end of the potentiometer is connected with the microphone line, and the second connecting end and the grounding end of the potentiometer are grounded;
and the processor is used for sending a regulation and control instruction to the potentiometer according to the environmental audio signal collected by the auxiliary microphone so that the potentiometer regulates the sensitivity of the microphone according to the regulation and control instruction and is connected with the auxiliary microphone and the potentiometer.
Optionally, the method further comprises: a current limiting resistor;
one end of the current-limiting resistor is connected with the second connecting end of the microphone, and the other end of the current-limiting resistor is grounded.
Optionally, the method further comprises: a main control panel and function keys;
the adjusting circuit, the microphone and the function keys are all arranged on the main control board;
one end of the function key is connected with the microphone wire of the earphone, and the other end of the function key is grounded.
Optionally, the function key comprises: starting a pause key, a volume increasing key, a volume decreasing key, a first separation resistor and a second separation resistor;
one end of the start pause key is connected with a microphone wire of the earphone, and the other end of the start pause key is grounded;
one end of the volume increasing key is connected with a microphone wire of the earphone through the first separation resistor, and the other end of the volume increasing key is grounded;
one end of the volume reducing key is connected with the microphone line of the earphone through the first separating resistor and the second separating resistor, and the other end of the volume reducing key is grounded.
Optionally, a control box is also included;
the main control board and the function keys are arranged in the control box.
Optionally, the method further comprises: at least two filter capacitors;
one end of the filter capacitor is connected with the microphone line of the earphone, and the other end of the filter capacitor is grounded.
In addition, optionally, the method further comprises: an anti-magnetic coil and an anti-static diode;
the antimagnetic coil is connected to a microphone wire of the earphone;
and one end of the anti-static diode is connected with the antimagnetic coil, and the other end of the anti-static diode is grounded.
The embodiment of the utility model provides a technical scheme adds the regulating circuit who is used for adjusting microphone sensitivity in the earphone, can adjust the sensitivity of microphone through the mode that changes regulating circuit's resistance value according to the service environment demand of earphone to improve speech quality.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain embodiments of the invention and are not intended to limit the embodiments of the invention unduly.
In the drawings:
fig. 1 is a partial circuit diagram of an earphone according to an embodiment of the present invention;
fig. 2 is a partial circuit diagram of the earphone according to the embodiment of the present invention when the adjusting circuit is a manual adjusting circuit;
fig. 3 is a schematic structural diagram of an earphone according to an embodiment of the present invention when the adjusting circuit is a manual adjusting circuit;
fig. 4 is a partial circuit diagram of the earphone according to the embodiment of the present invention when the adjusting circuit is an automatic adjusting circuit;
fig. 5 is a schematic structural diagram of the earphone when the adjusting circuit of the embodiment of the present invention is an automatic adjusting circuit.
Description of the reference numerals
1: a microphone line; 10: a microphone; 11: a first connection end of a microphone; 12: a ground terminal; 13: a second connection end of the microphone; 20: a regulating circuit; 21: a manual adjustable resistor; 22: a first fixed capacitor; 23: fixing a resistor; 24: a second fixed capacitor; 25: a potentiometer; 26: a processor; 27: an auxiliary microphone; 30: a current limiting resistor; 40: a control box; 41: a manual control; 42: a first sound collection port; 43: a second sound collection port; 44: a handset; 45: a joint; 46: an operation section; 50: function keys; 51: starting a pause key; 52: a volume up key; 53: a volume down key; 54: a first separation resistor; 55: a second separation resistor; 60: a filter capacitor; 70: a antimagnetic coil; 80: and an anti-static diode.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the scope protected by the embodiments of the present invention.
The inventor is realizing the utility model discloses an in-process discovery, at present, the sensitivity of the microphone on the earphone is fixed, can not adjust, has influenced user's speech quality.
Therefore, for solving the defect among the prior art, the embodiment of the utility model provides an earphone, the sensitivity of adjustable microphone improves speech quality.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings and embodiments, so that how to implement the technical solution to solve the technical problem and achieve the technical effect can be fully understood and implemented, and the structure of the embodiments of the present invention will be further described with reference to the following drawings.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the embodiments of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of describing the embodiments of the present invention and simplifying the description, but not for indicating or implying that the indicated device or element must have a specific direction, be constructed and operated in a specific direction, and therefore the terms describing the positional relationships in the drawings are only used for illustrative purposes, and should not be construed as limiting the embodiments of the present invention, and it will be understood that the specific meanings of the terms can be understood by those skilled in the art according to specific situations.
Fig. 1 is a partial circuit diagram of an earphone according to an embodiment of the present invention, as shown in fig. 1.
An embodiment of the utility model provides an earphone, include: a microphone 10 and an adjusting circuit 20 for adjusting the sensitivity of the microphone 10 by changing the resistance value.
Wherein, the first connection end 11 of the microphone 10 is connected with the microphone line 1 of the earphone.
The ground terminal 12 of the microphone 10 is grounded.
The second connection 13 of the microphone 10 is connected to one end of the control circuit 20, and the other end is grounded.
It should be noted that the microphone line 1 can be used as a power line of the microphone 10 to output power to the microphone 10, and can be used as a signal line to transmit signals output by the microphone 10. The first connection end 11 of the microphone 10 can receive power for the microphone 10 through the internal circuit design of the microphone 10, and the first connection end 11 of the microphone 10 outputs signals for the microphone 10.
The embodiment of the utility model provides a technical scheme adds the regulating circuit 20 who is used for adjusting microphone 10 sensitivity in the earphone, can adjust microphone 10's sensitivity through the mode that changes regulating circuit 20's resistance value according to the service environment demand of earphone to the improvement speech quality of earphone. For example, taking the case that the user connects the earphone to the mobile phone for conversation, when the user is in a quiet environment, the resistance of the adjusting circuit 20 may be decreased to increase the sensitivity of the microphone 10, so that the conversation is clearer. When the user is in a noisy environment, the sensitivity of the microphone 10 can be reduced by increasing the resistance of the adjusting circuit 20, so as to reduce the influence of external noise on the user's conversation. By changing the resistance of the adjusting circuit 20, the sensitivity of the microphone 10 can be adjusted according to the requirement, and the conversation quality of the earphone is improved.
The embodiment of the utility model provides an earphone, adjusting circuit 20's regulation mode includes that manual regulation and automatically regulated are two kinds, and is right below through two kinds of regulation modes the embodiment of the utility model provides an earphone does further detailed introduction.
The regulating circuit 20 is a manual regulating circuit 20.
Referring to fig. 2, the regulating circuit 20 is a manual regulating circuit, and the regulating circuit 20 includes: a manually adjustable resistor 21, a first fixed capacitor 22 and a fixed resistor 23.
One end of the first fixed capacitor 22 is connected to the second connection end 13 of the microphone 10, and the other end is connected to the movable end of the manually adjustable resistor 21. The fixed end of the manual adjustable resistor 21 is connected with one end of the fixed resistor 23. The other end of the fixed resistor 23 is grounded. In specific implementation, the maximum resistance range of the manual adjustable resistor 21 is 5-10K Ω, the resistance range of the fixed resistor 23 is 1-5K Ω, and the capacitance of the first fixed capacitor 22 is 1 μ F-3 μ F.
When the sensitivity of the microphone is adjusted, the sensitivity of the microphone 10 can be improved by manually decreasing the resistance of the manually adjustable resistor 21, and the sensitivity of the microphone 10 can be reduced by manually increasing the resistance of the manually adjustable resistor 21. Moreover, the fixed resistor 23 and the first fixed capacitor 22 are arranged to prevent the short circuit and abnormal sensitivity of the microphone 10 during the manual adjustment of the sensitivity by the user. It should be noted that the connection positions among the manually adjustable resistor 21, the first fixed capacitor 22 and the fixed resistor 23 can be adjusted according to different design requirements, and are not limited herein.
In the embodiment of the present invention, the manual adjustable resistor 21 includes but is not limited to a sliding adjustable resistor or a screw adjustable resistor. Depending on the form of the manually adjustable resistor 21, the way in which the resistance of the manually adjustable resistor 21 is adjusted accordingly also differs. The two forms of the manually adjustable resistor 21 described above will now be described. What needs to be added here is: the embodiment of the present invention provides a manual adjustable resistor 21, which can select other forms of adjustable resistors besides the mentioned sliding adjustable resistor or screw adjustable resistor, and the present invention does not specifically limit this.
In order to control the sensitivity of the microphone 10, referring to fig. 2, in the embodiment of the present invention, the earphone further includes a main control board (not shown in the figure) and a function key 50. The adjusting circuit 20 (manual adjusting circuit), the microphone 10 and the function keys 50 are all arranged on the main control board. One end of the function button 50 is connected to the microphone line 1 of the earphone, and the other end is grounded. To protect the main control board and the function keys 50, the headset further comprises a control box 40, see fig. 3. The main control board and the function keys 50 are all arranged in the control box 40.
With continued reference to fig. 3, the control box 40 is provided with a manual control 41 connected to the manual adjustable resistor 21 and configured to be linked with the movable end of the manual adjustable resistor 21. The control box 40 can improve the aesthetic property of the earphone, and simultaneously provides protection for the main control board, the adjusting circuit 20 and the microphone 10, and prolongs the service life of the earphone.
When the manual adjustable resistor 21 is a sliding adjustable resistor, the manual control 41 is an adjusting slide rod. The control box 40 is provided with a strip-shaped adjusting hole, an adjusting slide rod passes through the strip-shaped adjusting hole to be connected with the manual adjustable resistor 21, and the movable end of the manual adjustable resistor 21 is driven to move through the sliding adjusting slide rod so as to change the resistance value of the manual adjustable resistor 21.
When the manual adjustable resistor 21 is a screw type manual adjustable resistor, the manual control 41 is an adjusting knob. The control box 40 is provided with an adjusting hole, the adjusting knob passes through the adjusting hole to be connected with the manual adjustable resistor 21, and the moving end of the manual adjustable resistor 21 is driven to move by rotating the adjusting knob so as to change the resistance value of the manual adjustable resistor 21.
With continued reference to fig. 1 and fig. 2, in order to ensure the call stability of the microphone 10, it is necessary to control the current limiting of the microphone 10, and therefore, in the embodiment of the present invention, the current limiting resistor 30 is further included. Specifically, one end of the current limiting resistor 30 is connected to the second connection terminal 13 of the microphone 10, and the other end is grounded. In the embodiment of the present invention, the resistance of the current limiting resistor 30 is 3 ~ 5K Ω, for example, 3.9K Ω can be selected.
The regulating circuit 20 is an automatic regulating circuit.
Referring to fig. 4, the adjusting circuit 20 is an automatic adjusting circuit, and the adjusting circuit 20 includes: a second fixed capacitor 24, a potentiometer 25, a processor 26 and an auxiliary microphone 27 for picking up ambient audio signals.
Two ends of the second fixed capacitor 24 are connected to the second connection end 13 of the microphone 10 and the first connection end of the potentiometer 25, respectively.
The power supply terminal of the potentiometer 25 is connected to the microphone line 1, and the second connection terminal and the ground terminal of the potentiometer 25 are both grounded.
A processor 26 for sending a regulation instruction to the potentiometer 25 according to the environmental audio signal collected by the auxiliary microphone 27, so that the potentiometer 25 adjusts the sensitivity of the microphone 10 according to the regulation instruction is connected with the auxiliary microphone 27 and the potentiometer 25.
The embodiment of the utility model provides an in, adjusting circuit 20 is automatic regulating circuit, and the earphone acquires the audio signal of earphone present environment through supplementary microphone 27, and processor 26 sends regulation and control instruction to potentiometre 25 according to the audio signal of environment to make potentiometre 25 adjust the resistance value according to regulation and control instruction, so that adjust microphone 10's sensitivity. For example, the smaller the intensity value of the ambient audio signal collected by the auxiliary microphone 27, the smaller the processor 26 adjusts the resistance value of the potentiometer 25, and the greater the sensitivity of the microphone 10. Taking the case that the user connects the earphone to the mobile phone for conversation, when the user is in a quiet environment, the intensity value of the environmental audio signal collected by the auxiliary microphone 27 is small, and then the processor 26 reduces the resistance value of the potentiometer 25, so as to improve the sensitivity of the microphone 10, and make the conversation clearer. When the user is in a noisy environment, the intensity value of the environmental audio signal collected by the auxiliary microphone 27 is large, and then the processor 26 adjusts the resistance value of the potentiometer 25 to be large, so as to reduce the sensitivity of the microphone 10, so as to reduce the influence of external noise on the user call.
It should be noted that, in an implementation, the processor 26 may adjust the magnitude of the resistance value of the potentiometer 25 according to the percentage of the intensity value of the environmental audio signal. For example, the potentiometer 25 has a resistance of 5K Ω, which divides the ambient audio signal intensity value from 1 to 150 db into one hundred parts, and adjusts the resistance to 0.05K Ω for each 1.5 db change. Of course, other proportions may be adjusted, and are not described herein in detail. In the embodiment of the present invention, the capacitance of the second fixed capacitor 24 is 1 μ F to 3 μ F. The auxiliary microphone 27 includes, but is not limited to, an electret microphone.
With continued reference to fig. 4, in order to ensure the conversation stability of the microphone 10, the microphone 10 needs to be controlled to be current-limited, and therefore, the earphone includes a current-limiting resistor 30. The current limiting resistor 30 may be set in a manner that the current limiting resistor 30 is set when the regulating circuit 20 is a manual regulating circuit.
Accordingly, the headset further comprises: a main control board (not shown) and function keys 50. The adjusting circuit 20 (auto-adjusting circuit), the microphone 10, the processor 26 and the auxiliary microphone 27 are all disposed on the main control board.
Referring to fig. 5, in order to facilitate the user to flexibly control the earphone, improve the aesthetic property, and simultaneously provide a protection effect for the control main board, and prolong the service life of the earphone, the earphone further comprises a control box 40. The main control board and the function keys 50 are all arranged in the control box 40. The main control board (not shown) and the function keys 50 are arranged in a manner that refers to the arrangement of the adjusting circuit 20 as a manual adjusting circuit.
With continued reference to fig. 5, a first sound collecting port 42 is provided at a position on the control box 40 corresponding to the microphone 10, and a second sound collecting port 43 is provided at a position on the control box 40 corresponding to the auxiliary microphone 27. The microphone 10 and the auxiliary microphone 27 can collect sounds through the corresponding sound collecting ports.
It should be noted that, in the embodiment of the present invention, no matter the adjusting circuit 20 is a manual adjusting circuit or an automatic adjusting circuit, the earphone can be one of various existing earphones, for example, a wired earphone, a wireless earphone, etc. The headset may also be a single-or dual-earpiece headset.
When the headset is in the form of a single earpiece, the control box 40 may be provided on the headset housing.
When the headset is in the form of a dual-earpiece headset, which is one type of dual-earpiece headset shown in fig. 3 and 5, the headset includes an earpiece 44, a control box 40 and a connector 45, see fig. 3 and 5.
The connector 45 is used to connect with terminal devices, including but not limited to computers, cell phones, and other devices using headsets. When the earphone is a wired earphone, the connector 45 includes, but is not limited to, a USB connector, a cylindrical plug, a flat plug, and the like, and is used for plugging in a terminal device. When the headset is a wireless headset, the connector 45 includes, but is not limited to, a wireless connection, such as a bluetooth connection, an infrared connection, a network connection, etc.
The earpieces 44 include a left earpiece and a right earpiece. In addition to the control box 40 being located on the handset, the control box 40 may also be located on the headset cord that connects the left handset; or the control box 40 is arranged on the earphone line connected with the right earphone; or the control box 40 is provided on the earphone line between the left and right earphones.
With continued reference to fig. 2 and 4, the headset includes function keys 50, by means of which function keys 50 the microphone 10 can be controlled accordingly. Specifically, one end of the function key 50 is connected to the microphone line 1 of the earphone, and the other end is grounded. The function key includes: a pause key 51, a volume up key 52, a volume down key 53, a first separation resistor 54 and a second separation resistor 55 are activated. In an implementation manner, the control box 40 is provided with an operation portion 46 connected with the function key 50 at a position corresponding to the function key 50 for operating the function key 50. The operation portion 46 includes corresponding keys, and the corresponding functions are realized by operating the corresponding keys to drive the start pause key 51, the volume increase key 52 and the volume decrease key 53.
The start pause key 51 has one end connected to the microphone line 1 of the earphone and the other end grounded. The volume up key 52 has one end connected to the microphone line 1 of the earphone through the first separation resistor 54 and the other end grounded. The volume-down key 53 has one end connected to the microphone line 1 of the earphone through the first and second separation resistors 54 and 55 and the other end grounded.
The first and second separating resistors 54 and 55 are used to separate the start pause key 51, the volume up key 52 and the volume down key 53, so as to prevent short circuit between them and avoid function confusion. The resistance ranges of the first separating resistor 54 and the second separating resistor 55 are both 190 Ω and 450 Ω. In the embodiment of the present invention, the resistance of the first separating resistor 34 is 221 Ω, and the resistance of the second separating resistor 35 is 392 Ω.
With continued reference to fig. 2 and 4, in order to prevent the high frequency waves from interfering with the microphone 10, the headset further includes: at least two filter capacitors 60. Specifically, one end of the filter capacitor 60 is connected to the microphone line 1 of the earphone, and the other end is connected to the ground line 2. In the embodiment of the present invention, the number of the filter capacitors 60 is two, one capacitance value is 10nF, and the other capacitance value is 15 pF.
In addition, in order to prevent the electromagnetic noise and the static electricity from interfering the microphone 10, the earphone further includes: a magnetic shielding coil 70 and an electrostatic shielding diode 80. Specifically, the antimagnetic coil 70 is connected to the earphone line 1. The anti-static diode 80 has one end connected to the anti-magnetic coil 70 and the other end connected to the ground line 2. The number of turns of the antimagnetic coil 70 is 500-700R, and in the embodiment of the present invention, the number of turns of the antimagnetic coil 70 is 600R.
To sum up, the embodiment of the utility model provides a technical scheme adds the regulating circuit who is used for adjusting microphone sensitivity in the earphone, can adjust the sensitivity of microphone through the mode that changes regulating circuit's resistance value according to the service environment demand of earphone to improve speech quality. The adjusting circuit can be divided into a manual adjusting circuit and an automatic adjusting circuit, wherein the adjusting circuit is the manual adjusting circuit, and a user can adjust the sensitivity of the microphone according to the requirement of a use environment by manually changing the resistance value of the manual adjustable resistor, so that the conversation quality is improved. The adjusting circuit is an automatic adjusting circuit, the earphone acquires an environment audio signal through the auxiliary microphone, and the processor sends a regulation instruction to the adjusting circuit according to the environment audio signal, so that the adjusting circuit adjusts the sensitivity of the main microphone according to the regulation instruction, the automatic adjustment of the sensitivity of the main microphone of the earphone is realized, the call quality is improved, and the user experience is improved.
It should be noted that, although the detailed description of the embodiments of the present invention is provided with reference to the drawings, the present invention should not be construed as limiting the scope of the embodiments of the present invention. Various modifications and changes may be made by those skilled in the art without inventive step within the scope of the appended claims.
The examples of the embodiment of the present invention are intended to concisely illustrate the technical features of the embodiments of the present invention, so that a person skilled in the art can visually understand the technical features of the embodiments of the present invention, and do not act as an improper limitation of the embodiments of the present invention.
The above-described apparatus embodiments are merely illustrative, wherein the units described as separate components may or may not be physically separate. One of ordinary skill in the art can understand and implement it without inventive effort.
While the foregoing description shows and describes several preferred embodiments of the present invention, it is to be understood, as noted above, that the embodiments are not limited to the forms disclosed herein, but are not to be considered as exclusive of other embodiments, and are capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. Modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the embodiments of the invention, which should be limited only by the claims appended hereto.
Claims (10)
1. An earphone, comprising: a microphone and an adjusting circuit for adjusting the sensitivity of the microphone by changing a resistance value; wherein,
the first connecting end of the microphone is connected with a microphone wire of the earphone;
the grounding end of the microphone is grounded;
one end of the adjusting circuit is connected with the second connecting end of the microphone, and the other end of the adjusting circuit is grounded.
2. The headset of claim 1, wherein the adjustment circuit is a manual adjustment circuit comprising: the circuit comprises a manual adjustable resistor, a first fixed capacitor and a fixed resistor;
one end of the first fixed capacitor is connected with the second connecting end of the microphone, and the other end of the first fixed capacitor is connected with the movable end of the manual adjustable resistor;
the fixed end of the manual adjustable resistor is connected with one end of the fixed resistor;
the other end of the fixed resistor is grounded.
3. The headset of claim 2, wherein the manually adjustable resistor comprises a slide adjustable resistor or a screw adjustable resistor.
4. The headset of claim 1, wherein the adjustment circuit is an automatic adjustment circuit comprising: the second fixed capacitor, the potentiometer, the processor and an auxiliary microphone are used for collecting environmental audio signals; wherein,
two ends of the second fixed capacitor are respectively connected with the second connecting end of the microphone and the first connecting end of the potentiometer;
the power supply end of the potentiometer is connected with the microphone line, and the second connecting end and the grounding end of the potentiometer are grounded;
and the processor is used for sending a regulation and control instruction to the potentiometer according to the environmental audio signal collected by the auxiliary microphone so that the potentiometer regulates the sensitivity of the microphone according to the regulation and control instruction and is connected with the auxiliary microphone and the potentiometer.
5. The headset of any one of claims 1-4, further comprising: a current limiting resistor;
one end of the current-limiting resistor is connected with the second connecting end of the microphone, and the other end of the current-limiting resistor is grounded.
6. The headset of any one of claims 1-4, further comprising: a main control panel and function keys;
the adjusting circuit, the microphone and the function keys are all arranged on the main control board;
one end of the function key is connected with the microphone wire of the earphone, and the other end of the function key is grounded.
7. The headset of claim 6, wherein the function keys comprise: starting a pause key, a volume increasing key, a volume decreasing key, a first separation resistor and a second separation resistor;
one end of the start pause key is connected with a microphone wire of the earphone, and the other end of the start pause key is grounded;
one end of the volume increasing key is connected with a microphone wire of the earphone through the first separation resistor, and the other end of the volume increasing key is grounded;
one end of the volume reducing key is connected with the microphone line of the earphone through the first separating resistor and the second separating resistor, and the other end of the volume reducing key is grounded.
8. The headset of claim 6, further comprising a control box;
the main control board and the function keys are arranged in the control box.
9. The headset of any one of claims 1-4, further comprising: at least two filter capacitors; one end of the filter capacitor is connected with the microphone line of the earphone, and the other end of the filter capacitor is grounded.
10. The headset of any one of claims 1-4, further comprising: an anti-magnetic coil and an anti-static diode;
the antimagnetic coil is connected to a microphone wire of the earphone;
and one end of the anti-static diode is connected with the antimagnetic coil, and the other end of the anti-static diode is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820655933.8U CN208285495U (en) | 2018-05-03 | 2018-05-03 | A kind of earphone |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820655933.8U CN208285495U (en) | 2018-05-03 | 2018-05-03 | A kind of earphone |
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| CN208285495U true CN208285495U (en) | 2018-12-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110460921A (en) * | 2019-07-15 | 2019-11-15 | 中国第一汽车股份有限公司 | A kind of pick-up control method, device, vehicle and storage medium |
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2018
- 2018-05-03 CN CN201820655933.8U patent/CN208285495U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110460921A (en) * | 2019-07-15 | 2019-11-15 | 中国第一汽车股份有限公司 | A kind of pick-up control method, device, vehicle and storage medium |
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