CN102801868A - System for carrying out real-time environmental noise inhibition in mobile terminal - Google Patents
System for carrying out real-time environmental noise inhibition in mobile terminal Download PDFInfo
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- CN102801868A CN102801868A CN2012103112122A CN201210311212A CN102801868A CN 102801868 A CN102801868 A CN 102801868A CN 2012103112122 A CN2012103112122 A CN 2012103112122A CN 201210311212 A CN201210311212 A CN 201210311212A CN 102801868 A CN102801868 A CN 102801868A
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Abstract
The invention discloses a system for carrying out real-time environmental noise inhibition in a mobile terminal, which is characterized by comprising an input device, a processing device and an output device, wherein the input device is used for receiving an environmental noise signal, carrying out analog-digital conversion on the environmental noise signal into a digital environmental noise signal and outputting the digital environmental noise signal to the processing device; the processing device is used for receiving the digital environmental noise signal and carrying out reversal processing to obtain a digital environmental noise signal with the equivalent vibration amplitude and an opposite phase, carrying out gain regulation on the digital environmental noise signal with the equivalent vibration amplitude and the opposite phase according to indication of a user and then outputting the obtained digital environmental noise signal to the output device; and the output device is used for receiving the digital environmental noise signal with the equivalent vibration amplitude and the opposite phase, which is subjected to gain regulation, carrying out digital-to-analog conversion and on the digital environmental noise signal subjected to gain regulation and outputting an environmental noise signal with the equivalent vibration amplitude and the opposite phase. The invention solves the problems that additional special hardware or special power supply equipment is not required and the noise inhibition cannot be well carried out according to the real-time environment.
Description
Technical field
The present invention relates to field of mobile terminals, particularly a kind of system that in portable terminal, carries out the real time environment noise suppressed.
Background technology
At present commercially available active mode denoise earphone is because need be for microphone provides independent current source, and spare and accessory parts are not general, and therefore just causing needs extra specialized hardware or special-purpose power supply unit, and coming provides independent current source for microphone; Can't well carry out noise suppressed in the prior art simultaneously according to real time environment.
Therefore, how making the power supply unit that does not need extra special hardware and special use in the prior art is the power supply of noise input unit; Can also well carry out noise suppressed according to implementing environment simultaneously, just become the technical problem that needs to be resolved hurrily.
Summary of the invention
The purpose of this invention is to provide a kind of system that in portable terminal, carries out the real time environment noise suppressed, to solve the power supply unit that needs extra specialized hardware or special use and can't well carry out the noise suppressed problem according to real time environment.
For solving the problems of the technologies described above, the invention provides a kind of system that in portable terminal, carries out the real time environment noise suppressed, it is characterized in that, comprising: input unit, processing unit and output device; Wherein,
Said input unit couples with said processing unit mutually, is used for the reception environment noise signal, this ambient noise signal is carried out analog-to-digital conversion become the digital environment noise signal, outputs to said processing unit;
Said processing unit; Couple mutually with said input unit and output device; Being used to receive this digital environment noise signal carries out anti-phase and handles and to obtain the opposite digital environment noise signal of the suitable phase place of amplitude; According to user's indication the opposite digital environment noise signal of the suitable phase place of this amplitude is carried out gain-adjusted, export to said output device then;
Said output device couples with said processing unit mutually, is used for the opposite digital environment noise signal of the suitable phase place of said amplitude after receiving gain is regulated, and it is carried out digital-to-analogue conversion, the ambient noise signal that the suitable phase place of output amplitude is opposite.
Wherein, said processing unit further comprises: anti-phase sonicated unit and adjustment gain unit, wherein,
Said anti-phase sound unit; Couple mutually with said input unit and adjustment gain unit; Be used to receive said digital environment noise signal; This digital environment noise signal is carried out the anti-phase processing obtain the opposite digital environment noise signal of the suitable phase place of amplitude, and output it to said adjustment gain unit;
Said adjustment gain unit; Couple mutually with said anti-phase sound unit and output device; Be used to receive user's adjustment indication information, the opposite digital environment noise signal of the suitable phase place of this amplitude carried out gain-adjusted, export to said output device then according to this adjustment indication information.
Wherein, said anti-phase sound unit is an inverter.
Wherein, said adjustment gain unit is a fader.
Wherein, The said indication according to the user carried out gain-adjusted to the opposite digital environment noise signal of the suitable phase place of this amplitude; Further be: according to user's indication the opposite digital environment noise signal of the suitable phase place of this amplitude is carried out gain-adjusted, be adjusted into the opposite digital environment noise signal of amplitude same phase.
Compared with prior art, the system that in portable terminal, carries out the real time environment noise suppressed according to the invention has following technique effect: need not extra specialized hardware or special-purpose power supply unit, can well carry out noise suppressed according to real time environment simultaneously.This system applies can satisfy most consumers needs in using equipment such as portable terminal or voice playing and reduce environmental noise, the effect that is able to wholwe-hearted work and study or feels at ease to have a rest in equipment such as portable terminal or voice playing.
Description of drawings
Fig. 1 is the described a kind of system architecture diagram that in portable terminal, carries out the real time environment noise suppressed of the embodiment of the invention.
Fig. 2 is the structured flowchart of processing unit in the described a kind of system that in portable terminal, carries out the real time environment noise suppressed of the embodiment of the invention.
Embodiment
As shown in Figure 1, be a kind of system that in portable terminal, carries out the real time environment noise suppressed that the embodiment of the invention provided, this system comprises: input unit 101, processing unit 102 and output device 103; Wherein,
As shown in Figure 2, processing unit 102 further comprises: anti-phase sonicated unit 1021 and adjustment gain unit 1022, wherein,
Said anti-phase sound unit 1021; Couple mutually with said input unit 101 and adjustment gain unit 1022; Be used to receive said digital environment noise signal; This digital environment noise signal is carried out the anti-phase processing obtain the opposite digital environment noise signal of the suitable phase place of amplitude, and output it to said adjustment gain unit 1022;
Said adjustment gain unit 1022; Couple mutually with output device 103 with said anti-phase sound unit 1021; Be used to receive user's adjustment indication information; According to this adjustment indication information the opposite digital environment noise signal of the suitable phase place of this amplitude is carried out gain-adjusted, export to said output device 103 then.
Wherein, Said adjustment indication information according to the user; Digital environment noise signal to the suitable phase place of this amplitude is opposite is carried out gain-adjusted; Further be: according to user's adjustment indication information, indication is carried out gain-adjusted to the opposite digital environment noise signal of the suitable phase place of this amplitude, is adjusted into the opposite digital environment noise signal of amplitude same phase.Adjust to the opposite digital environment noise signal of amplitude same phase, when just noise signal at utmost being suppressed, this also be to realize optimum purpose.
Anti-phase sound unit 1021 described here can specifically adopt the inverter of which kind of model to belong to common practise here to those skilled in the art through being to realize through inverter in the prior art in practical operation, no longer specifically gives unnecessary details here.
Adjustment gain unit 1022 described here; Can be through being to realize in the prior art in practical operation through fader; The concrete fader of which kind of model that adopts belongs to common practise here to those skilled in the art, no longer specifically gives unnecessary details here.
System according to the invention can be by user installation in terminal equipment; This overall system operating process is: at first whether sense terminals sound input-output equipment is good for use behind the program start; Confirm to begin the ambient sound waves (being ambient noise signal) that the receiving terminal audio input device collects immediately after errorless; After the anti-phase computing, obtain corresponding anti-phase sound wave, after the adjustment gain is extremely at utmost offset ambient sound waves, from the audio output device output at terminal; So circulation realizes the active of ambient noise is suppressed in real time.
The present invention is a general active mode denoise implementation method; Based on electronic equipments such as portable terminal of extensively popularizing or voice playing; Do not need extra power supply unit support; Simultaneously can well carry out noise suppressed according to real time environment; Promptly when the anti-phase sound wave of noise and the noise sound wave in the environment got into user's ear simultaneously, destruction interference just can be eliminated the ambient noise sound wave that the user can hear originally greatly, and the user can obtain the noise reduction of maximum through the gain of regulating the anti-phase sound wave.
Compared with prior art, the system that in portable terminal, carries out the real time environment noise suppressed according to the invention has following technique effect: need not extra specialized hardware or special-purpose power supply unit, can well carry out noise suppressed according to real time environment simultaneously.This system applies can satisfy most consumers needs in using equipment such as portable terminal or voice playing and reduce environmental noise, the effect that is able to wholwe-hearted work and study or feels at ease to have a rest in equipment such as portable terminal or voice playing.The present invention simultaneously also realized one with low cost, the real time environment noise suppressed solution in using based on portable terminal.
The above embodiments only are used for enumerating enforcement aspect of the present invention, and explain technical characterictic of the present invention, are not to be used for limiting category of the present invention.The scope that any affiliated person skilled can all belong to the present invention according to the arrangement of unlabored change of spirit of the present invention or isotropism to be advocated, interest field of the present invention should be as the criterion with claim.
Claims (5)
1. a system that in portable terminal, carries out the real time environment noise suppressed is characterized in that, comprising: input unit, processing unit and output device; Wherein,
Said input unit couples with said processing unit mutually, is used for the reception environment noise signal, this ambient noise signal is carried out analog-to-digital conversion become the digital environment noise signal, outputs to said processing unit;
Said processing unit; Couple mutually with said input unit and output device; Being used to receive this digital environment noise signal carries out anti-phase and handles and to obtain the opposite digital environment noise signal of the suitable phase place of amplitude; According to user's indication the opposite digital environment noise signal of the suitable phase place of this amplitude is carried out gain-adjusted, export to said output device then;
Said output device couples with said processing unit mutually, is used for the opposite digital environment noise signal of the suitable phase place of said amplitude after receiving gain is regulated, and it is carried out digital-to-analogue conversion, the ambient noise signal that the suitable phase place of output amplitude is opposite.
2. the system that in portable terminal, carries out the real time environment noise suppressed as claimed in claim 1 is characterized in that, said processing unit further comprises: anti-phase sonicated unit and adjustment gain unit, wherein,
Said anti-phase sound unit; Couple mutually with said input unit and adjustment gain unit; Be used to receive said digital environment noise signal; This digital environment noise signal is carried out the anti-phase processing obtain the opposite digital environment noise signal of the suitable phase place of amplitude, and output it to said adjustment gain unit;
Said adjustment gain unit; Couple mutually with said anti-phase sound unit and output device; Be used to receive user's adjustment indication information, the opposite digital environment noise signal of the suitable phase place of this amplitude carried out gain-adjusted, export to said output device then according to this adjustment indication information.
3. the system that in portable terminal, carries out the real time environment noise suppressed as claimed in claim 2 is characterized in that, said anti-phase sound unit is an inverter.
4. the system that in portable terminal, carries out the real time environment noise suppressed as claimed in claim 2 is characterized in that, said adjustment gain unit is a fader.
5. like arbitrary described system that in portable terminal, carries out the real time environment noise suppressed in the claim 1 to 4; It is characterized in that; The said indication according to the user carried out gain-adjusted to the opposite digital environment noise signal of the suitable phase place of this amplitude; Further be: according to user's indication the opposite digital environment noise signal of the suitable phase place of this amplitude is carried out gain-adjusted, be adjusted into the opposite digital environment noise signal of amplitude same phase.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105453530A (en) * | 2013-05-08 | 2016-03-30 | 微软技术许可有限责任公司 | Noise reduction |
| CN106101909A (en) * | 2016-08-26 | 2016-11-09 | 维沃移动通信有限公司 | A kind of method of earphone noise reduction and mobile terminal |
| WO2016177204A1 (en) * | 2015-08-03 | 2016-11-10 | 中兴通讯股份有限公司 | Noise processing method and apparatus |
| CN106453760A (en) * | 2016-10-11 | 2017-02-22 | 努比亚技术有限公司 | Method for improving environmental noise and terminal |
| CN106601222A (en) * | 2016-10-31 | 2017-04-26 | 宇龙计算机通信科技(深圳)有限公司 | Noise obtaining device and noise reduction device by using same |
| CN108121527A (en) * | 2016-11-28 | 2018-06-05 | 天津三星电子有限公司 | A kind of method and electronic equipment for exporting audio |
| CN108462763A (en) * | 2017-02-22 | 2018-08-28 | 南昌黑鲨科技有限公司 | Noise reduction terminal and noise-reduction method |
| CN109115718A (en) * | 2018-08-03 | 2019-01-01 | 首都师范大学 | A kind of method and device filtering out the asynchronous scanning system coherent noise of Terahertz |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105453530A (en) * | 2013-05-08 | 2016-03-30 | 微软技术许可有限责任公司 | Noise reduction |
| CN105453530B (en) * | 2013-05-08 | 2019-01-22 | 微软技术许可有限责任公司 | A kind of method, user terminal and computer readable storage medium that noise reduces |
| WO2016177204A1 (en) * | 2015-08-03 | 2016-11-10 | 中兴通讯股份有限公司 | Noise processing method and apparatus |
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| CN106101909A (en) * | 2016-08-26 | 2016-11-09 | 维沃移动通信有限公司 | A kind of method of earphone noise reduction and mobile terminal |
| CN106453760A (en) * | 2016-10-11 | 2017-02-22 | 努比亚技术有限公司 | Method for improving environmental noise and terminal |
| CN106601222A (en) * | 2016-10-31 | 2017-04-26 | 宇龙计算机通信科技(深圳)有限公司 | Noise obtaining device and noise reduction device by using same |
| CN108121527A (en) * | 2016-11-28 | 2018-06-05 | 天津三星电子有限公司 | A kind of method and electronic equipment for exporting audio |
| CN108462763A (en) * | 2017-02-22 | 2018-08-28 | 南昌黑鲨科技有限公司 | Noise reduction terminal and noise-reduction method |
| CN108462763B (en) * | 2017-02-22 | 2023-08-29 | 南昌黑鲨科技有限公司 | Noise reduction terminal and noise reduction method |
| CN109115718A (en) * | 2018-08-03 | 2019-01-01 | 首都师范大学 | A kind of method and device filtering out the asynchronous scanning system coherent noise of Terahertz |
| CN109115718B (en) * | 2018-08-03 | 2020-10-13 | 首都师范大学 | Method and device for filtering coherent noise of terahertz asynchronous scanning system |
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Application publication date: 20121128 |