CN103929699A - Mobile communication terminal and noise removal method thereof - Google Patents
Mobile communication terminal and noise removal method thereof Download PDFInfo
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- CN103929699A CN103929699A CN201410131647.8A CN201410131647A CN103929699A CN 103929699 A CN103929699 A CN 103929699A CN 201410131647 A CN201410131647 A CN 201410131647A CN 103929699 A CN103929699 A CN 103929699A
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Abstract
The invention discloses a mobile communication terminal and a noise removal method of the mobile communication terminal. The mobile communication terminal comprises a first microphone, a change-over switch, a processor and a noise processor, wherein the first microphone is used for obtaining a noise signal in the communication process of the mobile communication terminal, the change-over switch comprises a first end, a second end, a third end and a control end, the first end is connected with the first microphone, the control end is used for controlling the first end to be connected with the second end or the first end to be connected with the third end, the processor is connected with the second end, and the noise processor is connected with the third end. When earphones are not inserted, the control end controls the first end to be connected with the second end; when the earphones are inserted, the control end controls the first end to be connected with the third end, so that the noise processor removes noise of a microphone of the earphones according to the noise signal. In this way, the noise of the microphone of the earphones can be removed, and the cost is low.
Description
Technical field
The present invention relates to communication technical field, a kind of method that particularly relates to mobile communication terminal and abate the noise.
Background technology
The mobile communication terminal of prior art adopts dual microphone technology, and for example mobile phone adopts dual microphone to realize decrease of noise functions, and effect is very obvious.More and more users converse by plugged earphone, and in communication process, because the face of the microphone distance users of earphone is far away, therefore, the quality of the microphone call by earphone is easy to be subject to the interference of ambient noise.
Earphone has decrease of noise functions at present, to avoid as far as possible the interference of ambient noise to call.But the price comparison of earphone with decrease of noise functions is expensive, cost is high, cannot promote the use of on a large scale.
Summary of the invention
A kind of method that the embodiment of the present invention provides mobile communication terminal and abated the noise, can eliminate the noise that earphone is conversed, and cost is low.
First aspect provides a kind of mobile communication terminal, and it comprises: the first microphone, for obtaining noise signal when the mobile communication terminal call; Diverter switch, it comprises first end, the second end, the 3rd end and control end, and first end is connected with the first microphone, and control end is used for controlling that first end is connected with the second end or first end is connected with the 3rd end; Processor, is connected with the second end; Noise processor, is connected with the 3rd end; In the time of plugged earphone not, control end control first end is connected with the second end; In the time of plugged earphone, control end control first end is connected with the 3rd end, so that noise processor is eliminated the noise of the microphone of earphone according to noise signal.
Wherein, noise processor comprises inverter and adder, noise processor comprises inverter and adder, the input of inverter is connected with the 3rd end, the output of inverter is connected with the first input end of adder, the second input of institute's adder is connected with the microphone of earphone, to obtain the voice of microphone of earphone.
Wherein, processor also comprises interruptive port, and interruptive port is connected with control end, in the time of plugged earphone, and interruptive port output interrupt signal, control end is connected with the 3rd end according to interrupt signal control first end.
Wherein, inverter obtains noise signal from the first microphone, and noise signal is carried out to anti-phase processing, and adder superposes by the noise of the microphone of earphone with through the noise signal of anti-phase processing, to eliminate the noise of microphone of earphone.
Wherein, diverter switch is single-pole double throw analog switch.
A kind of method that second aspect provides mobile communication terminal to abate the noise, mobile communication terminal comprises the first microphone, diverter switch, processor and noise processor, the first microphone, processor and noise processor are connected with diverter switch respectively, and method comprises: mobile communication terminal judges whether plugged earphone; If plugged earphone, mobile communication terminal control diverter switch is switched, so that noise processor is connected with the first microphone by diverter switch, and obtains noise signal from the first microphone; Mobile communication terminal is eliminated the noise of the microphone of earphone according to noise signal; If not plugged earphone, processor is connected with the first microphone by diverter switch, returns to mobile communication terminal and judges whether plugged earphone.
Wherein, the switching of mobile communication terminal control diverter switch comprises: mobile communication terminal produces interrupt signal, and switches according to interrupt signal control diverter switch.
Wherein, diverter switch is single-pole double throw analog switch.
Pass through such scheme, the invention has the beneficial effects as follows: the present invention, in the time of plugged earphone, is connected with the 3rd end by control end control first end, so that noise processor is eliminated the noise of the microphone of earphone according to noise signal, cost is low, can promote the use of on a large scale.
Brief description of the drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.Wherein:
Fig. 1 is the structural representation of the mobile communication terminal of first embodiment of the invention;
Fig. 2 is the flow chart of the method that abates the noise of the mobile communication terminal of first embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under performing creative labour prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1, Fig. 1 is the structural representation of the mobile communication terminal of first embodiment of the invention.As shown in Figure 1, the mobile communication terminal 10 that the present embodiment discloses comprises: the first microphone 101, diverter switch 102, processor 103, noise processor 104, earphone 105 and resistance R.Wherein, the first microphone 101 is preferably the secondary microphone of mobile communication terminal 10, is arranged on the back side of mobile communication terminal 10.Mobile communication terminal 10 also comprises main microphone (figure does not look), and itself and the first microphone 101 form dual microphone technology.
Wherein, diverter switch 102 comprises first end 106, the second end 107, the 3rd end 108 and control end 109, the first end 106 of diverter switch 102 is connected with the first microphone 101, processor 103 is connected with the second end 107 of diverter switch 102, and noise processed unit 104 is connected with the 3rd end 108 of diverter switch 102.Control end 109 is for controlling first end 106 and be connected with the second end 107 or first end 106 being connected with the 3rd end 108.
Noise processor 104 comprises inverter 110 and adder 111, the input 112 of inverter 110 is connected with the 3rd end 108, the output 113 of inverter 110 is connected with the first input end 114 of adder 111, the second input 115 of adder 111 is connected with the microphone of earphone 105, to obtain the voice of microphone of earphone 105.
Preferably, processor 103 also comprises interruptive port 116, and interruptive port 116 is connected with control end 109 by resistance R, and resistance R is protective resistance.Wherein, processor 103 produces an interrupt signal in the time of plugged earphone 105, interrupt signal is sent to control end 109 by interruptive port 116, control end 109 is connected with the 3rd end 108 according to interrupt signal control first end 106, and the first microphone 101 is connected with noise processor 104 by diverter switch 102.In other embodiments of the invention, those skilled in the art can produce interrupt signal completely by other means.
Below describe the operation principle of the mobile communication terminal 10 that the present embodiment discloses in detail.
In the time of plugged earphone 105 not, control end 109 does not receive interrupt signal, and the first end 106 of diverter switch 102 is connected with the second end 107, and the first microphone 101 is connected with processor 103 by diverter switch 102.In the time that mobile communication terminal 10 is conversed, the first microphone 101 obtains noise signal, and noise signal is sent to processor 103.
In the time of plugged earphone 105, processor 103 produces interrupt signal, and interrupt signal is sent to control end 109, and control end 109 switches and is connected with the 3rd end 108 according to interrupt signal control first end 106, and noise processor 104 is connected with the first microphone 101 by switch unit 102.In the time that user converses by the microphone of earphone 105, the first microphone 101 obtains noise signal, and the microphone of earphone 105 obtains voice and noise.Inverter 110 obtains noise signal from the first microphone 101, and noise signal is carried out to anti-phase processing, the output 113 of inverter 110 export one with the signal of 180 ° of the phase phasic differences of noise signal.The first input end 114 of adder 111 obtains the noise signal through anti-phase processing from inverter 110, the second input 115 obtains voice and noise from the microphone of earphone 105, and the noise of the microphone of earphone 105 and the noise signal through anti-phase processing are superposeed, and then adder 111 exports voice, to realize the noise of the microphone of eliminating earphone 105.Wherein, all identical or close with the noise of the microphone of earphone 105 of the frequency of noise signal and amplitude.
In the present embodiment, diverter switch 102 is preferably single-pole double throw analog switch.Mobile communication terminal 10 is preferably the communication terminals such as the panel computer that mobile phone maybe can converse.
Mobile communication terminal that this enforcement discloses 10 is in the time of plugged earphone 105, processor 103 produces interrupt signal, control end 109 is connected with the 3rd end 108 according to interrupt signal control first end 106, so that noise processor 104 is eliminated the noise of the microphone of earphone 105 according to noise signal, than the earphone of prior art, cost is low, can promote the use of on a large scale, has higher cost performance.
The method that the present invention also provides the mobile communication terminal of the first embodiment to abate the noise, is described on the basis of the mobile communication terminal 10 that it discloses at the first embodiment.As shown in Figure 2, the method that the present embodiment discloses comprises:
S201: mobile communication terminal 10 judges whether plugged earphone 105;
S202: if plugged earphone 105, mobile communication terminal 10 is controlled diverter switch 102 and switched, so that noise processor 104 is connected with the first microphone 101 by diverter switch 102, and obtains noise signal from the first microphone 101;
S203: mobile communication terminal 10 is eliminated the noise of the microphone of earphone 105 according to noise signal;
S204: if plugged earphone 105 not, processor 103 is connected with the first microphone 101 by diverter switch 102, and returns to 201.
In S202, if plugged earphone 105, processor 103 produces interrupt signal, and diverter switch 102 is switched according to interrupt signal, so that noise processor 104 is connected with the first microphone 101 by diverter switch 102.In the time that mobile communication terminal 10 is conversed, the first microphone 101 obtains noise signal.
In S203, mobile communication terminal 10 is eliminated the noise of the microphone of earphone 105 according to noise signal by noise processor 104.
In sum, the present invention is in the time of plugged earphone 105, processor 103 produces interrupt signal, control end 109 is connected with the 3rd end 108 according to interrupt signal control first end 106, so that noise processor 104 is eliminated the noise of the microphone of earphone 105 according to noise signal, cost is low, can promote the use of on a large scale, has higher cost performance.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes specification of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (8)
1. a mobile communication terminal, is characterized in that, described mobile communication terminal comprises:
The first microphone, for obtaining noise signal when the described mobile communication terminal call;
Diverter switch, it comprises first end, the second end, the 3rd end and control end, and described first end is connected with described the first microphone, and described control end is used for controlling that described first end is connected with described the second end or described first end is connected with described the 3rd end;
Processor, is connected with described the second end;
Noise processor, is connected with described the 3rd end;
In the time of plugged earphone not, first end is connected with described the second end described in described control end control;
Inserting when described earphone, first end is connected with described the 3rd end described in described control end control, so that described noise processor is eliminated the noise of the microphone of described earphone according to described noise signal.
2. mobile communication terminal according to claim 1, it is characterized in that, described noise processor comprises inverter and adder, the input of described inverter is connected with described the 3rd end, the output of described inverter is connected with the first input end of described adder, the second input of described adder is connected with the microphone of described earphone, to obtain the voice of microphone of described earphone.
3. mobile communication terminal according to claim 2, it is characterized in that, described processor also comprises interruptive port, described interruptive port is connected with described control end, in the time of described plugged earphone, described interruptive port output interrupt signal, described control end is connected with described the 3rd end according to first end described in described interrupt signal control.
4. mobile communication terminal according to claim 3, it is characterized in that, described inverter obtains described noise signal from described the first microphone, and described noise signal is carried out to anti-phase processing, described adder superposes by the noise of the microphone of described earphone with through the described noise signal of anti-phase processing, to eliminate the noise of microphone of described earphone.
5. mobile communication terminal according to claim 1, is characterized in that, described diverter switch is single-pole double throw analog switch.
6. the method that mobile communication terminal abates the noise, it is characterized in that, described mobile communication terminal comprises the first microphone, diverter switch, processor and noise processor, described the first microphone, described processor and described noise processor are connected with described diverter switch respectively, and described method comprises:
Described mobile communication terminal judges whether plugged earphone;
If insert described earphone, described in described mobile communication terminal control, diverter switch is switched, so that described noise processor is connected with described the first microphone by described diverter switch, and obtains noise signal from described the first microphone;
Described mobile communication terminal is eliminated the noise of the microphone of described earphone according to described noise signal;
If do not insert described earphone, described processor is connected with described the first microphone by described diverter switch, returns to described mobile communication terminal and judges whether plugged earphone.
7. method according to claim 6, is characterized in that, diverter switch is switched and comprised described in described mobile communication terminal control:
Described mobile communication terminal produces interrupt signal, and switches according to diverter switch described in described interrupt signal control.
8. method according to claim 6, is characterized in that, described diverter switch is single-pole double throw analog switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410131647.8A CN103929699A (en) | 2014-04-02 | 2014-04-02 | Mobile communication terminal and noise removal method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410131647.8A CN103929699A (en) | 2014-04-02 | 2014-04-02 | Mobile communication terminal and noise removal method thereof |
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| CN103929699A true CN103929699A (en) | 2014-07-16 |
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| CN201410131647.8A Pending CN103929699A (en) | 2014-04-02 | 2014-04-02 | Mobile communication terminal and noise removal method thereof |
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Cited By (4)
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| CN106412259A (en) * | 2016-09-14 | 2017-02-15 | 广东欧珀移动通信有限公司 | Mobile terminal call control method and apparatus, and mobile terminal |
| CN107909992A (en) * | 2017-12-04 | 2018-04-13 | 成都星达微科技有限公司 | A kind of campus dormitory active noise reduction system of powered stable |
| CN107993644A (en) * | 2017-12-04 | 2018-05-04 | 成都星达微科技有限公司 | A kind of campus dormitory active noise reduction system based on time switch |
| CN111741401A (en) * | 2020-08-26 | 2020-10-02 | 恒玄科技(北京)有限公司 | Wireless communication method for wireless headset assembly and wireless headset assembly |
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| CN107993644A (en) * | 2017-12-04 | 2018-05-04 | 成都星达微科技有限公司 | A kind of campus dormitory active noise reduction system based on time switch |
| CN111741401A (en) * | 2020-08-26 | 2020-10-02 | 恒玄科技(北京)有限公司 | Wireless communication method for wireless headset assembly and wireless headset assembly |
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Application publication date: 20140716 |
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