CN104036782A - Noise reduction method and handheld mobile terminal - Google Patents
Noise reduction method and handheld mobile terminal Download PDFInfo
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- CN104036782A CN104036782A CN201310070391.XA CN201310070391A CN104036782A CN 104036782 A CN104036782 A CN 104036782A CN 201310070391 A CN201310070391 A CN 201310070391A CN 104036782 A CN104036782 A CN 104036782A
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Abstract
The invention discloses a noise reduction method and a handheld mobile terminal. The method is applied to a first handheld mobile terminal. An answering module is arranged in the first handheld mobile terminal. A first audio playing unit is arranged in the answering module, and the first audio playing unit is used for playing a first voice signal sent by a second handheld mobile terminal when the first handheld mobile terminal communicates with the second handheld mobile terminal. At least one second audio playing unit is arranged on the answering module. The method comprises the following steps: collecting a first related parameter of the first voice signal; generating a second voice signal provided with a second related parameter based on the first related parameter, wherein the second related parameter of the second voice signal is matched with the first related parameter; and outputting the second voice signal through the at least one second audio playing unit to reduce noise of the first voice signal.
Description
Technical field
The present invention relates to electronic technology field, particularly a kind of noise-reduction method and a kind of hand-held mobile terminal.
Background technology
At present, along with the development of electronic technology, more and more different types of electronic equipments have dropped into the use of every field, and have enriched greatly people's life.Give an example with mobile phone, in the use of mobile phone, user can use mobile phone to communicate, or shooting, online etc. operation.
And in the time of mobile communication, will contact with user B such as user A time, can use the affiliated mobile phone B of mobile phone A and user B to communicate.In the process of communication, the microphone in mobile phone A can be converted to electric signal by the sound of user A, and the form of transmitting by space is transferred to mobile phone B conversion, allows user B can hear the sound of user A and the content of speaking.And the receiver of mobile phone A can receive the electric signal that mobile phone B sends over, and change, make user A hear the sound of user B and the content of speaking.And now, user A is in the time that listening user B speaks, there are three kinds of answering modes: one is that this answering mode can make the user of certain limit around mobile phone A can hear the sound that user B transmits, and may occur the danger that conversation content is revealed by using loudspeaker to listen to; Be a mode of wearing earphone receiving, although this mode can avoid conversation content to be heard by third party well, must wear earphone can use; Also having a kind of mode is the mode that most of users can select, and uses general mode to answer, and common answer mode neither needs to wear earphone, can not make again most of users hear, avoids the leakage of conversation content.
But the applicant finds in the process that realizes the application, in the time that user uses general mode to answer, the broadcasting scope of the receiver of mobile phone is greater than user's the scope of answering, therefore,, even if most play content is answered by user, still still old part sound is leaked out.Therefore, while using general mode to answer, can not ensure maintaining complete secrecy of conversation content, the Lou situation of sound that also has occurs, and then the situation that causes conversation content to be revealed occurs.
Therefore, the technical matters existing is in the prior art: while using general mode to receive calls, confidentiality is lower.
Summary of the invention
The invention provides a kind of noise-reduction method and a kind of hand-held mobile terminal, in order to solve in prior art, exist using general mode while receiving calls, the technical matters that confidentiality is lower.
On the one hand, the present invention, by the application's a embodiment, provides following technical scheme:
A kind of noise-reduction method, described method is applied to the first hand-held mobile terminal, in described the first hand-held mobile terminal, be provided with and answer module, the described inside modules of answering is provided with the first audio playing unit, for in the time of described the first hand-held mobile terminal and the second hand-held communication of mobile terminal, play the first sound tone signal that described the second hand-held mobile terminal sends, described answering in module is provided with at least one second audio playing unit, and described method comprises: the first-phase related parameter of collecting described first sound tone signal; Based on described first-phase related parameter, generate the second sound signal with second-phase related parameter, wherein, the second-phase related parameter of described second sound signal mates with described first-phase related parameter; Export described second sound signal by described at least one second audio playing unit, so that described first sound tone signal is carried out to noise reduction.
Optionally, described first-phase related parameter is specially phase parameter.
Optionally, described based on described first-phase related parameter, generation has the second sound signal of second-phase related parameter, specifically comprise: based on described the first phase parameter, obtain the second phase parameter, wherein, the phase difference value between described the second phase parameter and described the first phase parameter is K λ/2, wherein K is more than or equal to 1 integer, and λ is the wavelength of described first sound tone signal; According to described the second phase parameter, generate described second sound signal.
Optionally, describedly by described second sound signal, described first sound tone signal is carried out to noise reduction, specifically comprise: export described second sound signal by described at least one second audio playing unit, so that described second sound signal and described first sound tone signal superpose, described first sound tone signal is carried out to noise reduction.
On the other hand, the present invention provides by another embodiment of the application:
A kind of hand-held mobile terminal, in described hand-held mobile terminal, be provided with and answer module, the described inside modules of answering is provided with the first audio playing unit, for in the time of described hand-held mobile terminal and the second hand-held communication of mobile terminal, play the first sound tone signal that described the second hand-held mobile terminal sends, described answering in module is provided with at least one second audio playing unit, and described hand-held mobile terminal comprises: collector unit, for collecting the first-phase related parameter of described first sound tone signal; Obtain unit, for based on described first-phase related parameter, generate the second sound signal with second-phase related parameter, wherein, the second-phase related parameter of described second sound signal mates with described first-phase related parameter; Described at least one second audio playing unit, carries out noise reduction for exporting described second sound signal to described first sound tone signal.
Optionally, described first-phase related parameter is specially phase parameter.
Optionally, described acquisition unit, specifically comprise: obtain subelement, be used for based on described the first phase parameter, obtain the second phase parameter, wherein, the phase difference value between described the second phase parameter and described the first phase parameter is K λ/2, wherein K is more than or equal to 1 integer, and λ is the wavelength of described first sound tone signal; Generation unit, for according to described the second phase parameter, generates described second sound signal.
Optionally, described at least one second audio playing unit is specifically for exporting described second sound signal, so that described second sound signal and described first sound tone signal superpose, described first sound tone signal is carried out to noise reduction.
One or more technical schemes in technique scheme, have following technique effect or advantage:
In one or more technical schemes of the application, first in structure aspects, by being provided with at least one second audio playing unit in module and carrying out noise reduction answering, and, first collect the first-phase related parameter of first sound tone signal; Then based on first-phase related parameter, generate the second sound signal with second-phase related parameter, wherein, the second-phase related parameter of second sound signal mates with first-phase related parameter; Finally, by least one the second audio playing unit output second sound signal, so that first sound tone signal is carried out to noise reduction, eliminate the sound spilling from answer module, ensure the confidentiality of call.
Further, to be basis by the phase parameter of first sound tone signal, generate second sound signal, because the second phase parameter of second sound signal and the phase difference value of the first phase parameter are K λ/2, therefore in the time carrying out noise reduction, can eliminate well the voice signal of omitting from receiver, reach de-noising effect well.
Brief description of the drawings
Fig. 1 is the schematic diagram that in the embodiment of the present application, user A receives calls;
Fig. 2 is noise-reduction method implementation process figure in the embodiment of the present application;
Fig. 3 is the schematic diagram of first sound tone signal and second sound signal in the embodiment of the present application;
Fig. 4 is the schematic diagram of hand-held mobile terminal in the embodiment of the present application.
Embodiment
For solve in prior art, exist using general mode while receiving calls, the technical matters that confidentiality is lower, the embodiment of the present invention has proposed a kind of noise-reduction method and a kind of hand-held mobile terminal, its solution general thought is as follows:
In this application, a kind of noise-reduction method has been proposed, the method is applied to the first hand-held mobile terminal, in the first hand-held mobile terminal, be provided with and answer module, answer inside modules and be provided with the first audio playing unit, for in the time of the first hand-held mobile terminal and the second hand-held communication of mobile terminal, play the first sound tone signal that the second hand-held mobile terminal sends; In addition, answer and in module, be provided with at least one second audio playing unit, and the method comprises: the first-phase related parameter of collecting first sound tone signal; Based on first-phase related parameter, generate the second sound signal with second-phase related parameter, wherein, the second-phase related parameter of second sound signal mates with first-phase related parameter; By at least one the second audio playing unit output second sound signal, so that first sound tone signal is carried out to noise reduction, eliminate the sound spilling from answer module, ensure the confidentiality of call.
Below by accompanying drawing and specific embodiment, technical solution of the present invention is described in detail, be to be understood that the specific features in the embodiment of the present invention and embodiment is the detailed explanation to technical solution of the present invention, instead of restriction to technical solution of the present invention, in the situation that not conflicting, the technical characterictic in the embodiment of the present invention and embodiment can combine mutually.
Embodiment mono-:
In the embodiment of the present application, a kind of noise-reduction method has been proposed.
Further, the method is applied to the first hand-held mobile terminal, and in the embodiment of the present application, the first finger mobile terminal can be mobile phone, or PAD etc.
Further, in the first hand-held mobile terminal, be provided with and answer module, answer inside modules and be provided with the first audio playing unit, for in the time of the first hand-held mobile terminal and the second hand-held communication of mobile terminal, play the first sound tone signal that the second hand-held mobile terminal sends, answer and in module, be provided with at least one second audio playing unit.
Describe for example below, if the first hand-held mobile terminal is mobile phone, in mobile phone, there is microphone and receiver, microphone is in the time that two mobile phones communicate, can be by affiliated user's transfer voice to the other side, receiver is to receive the sound that the other side is transmitted, and then completes communication.Answer module as the receiver in mobile phone.Further, the concrete structure relation of answering module in the embodiment of the present application, in receiver, to be built-in with the first audio playing unit, the first device playing sound, and this first device is in the time of communication, can receive the electric signal that other mobile phones send over, and convert electrical signals to voice signal and play.In the time playing, because the area of the area ear of likely answering than user of playing is large, therefore, may occur that other users hear the situation of this sound, therefore, for fear of this situation, on receiver, be also provided with other the second device playing sound, the effect of this second device maximum is to eliminate the sound of omitting.
Further, in the time eliminating the sound of omitting, how to know that the sound that receiver transmits is the sound of omitting, can obtain by calculating.
At the first device playing sound in the time playing sound signal, according to the parameter of sound itself, and the scope of transmission, and compare with built-in preset range parameter etc., can obtain in the sound of propagating, the concrete numerical value of the normal sound that user answers and the sound of omission, and both ratio etc.
As shown in Figure 1, the schematic diagram receiving calls at user A.In Fig. 1, one end of mobile phone has the module of answering, and is answering inside modules, is provided with the first audio playing unit and is used for the signal that plays sound.Such as the auricle of user A is answered the face of answering 001 of module near mobile phone, and the face of answering 001 of answering module is the sound for example, sending for transmitting partner (user B), and the first audio playing unit, in the time playing sound signal, can form one by the expansion of the face of answering and answer scope.As the scope that the dotted line in Fig. 1 forms, when user is in the time that this scope receives calls, can clearly receive the sound that user B transmits.But user is in the time receiving calls, user's ear can not cover the voice signal of propagating in mobile phone completely, as the scope of the solid line in figure, outside this scope, thinks that the voice signal existing is the voice signal of omitting.
Now, answering in module except having the first audio playing unit of mobile phone, also has the second audio playing unit.
Further, the second audio playing unit can arrange one, also can arrange according to actual conditions multiple.In the time being provided with multiple the second audio playing unit, be also arranged on answering in module of mobile phone, and concrete magnitude setting, the embodiment of the present application does not limit.
And in the embodiment of the present application, how to eliminate the embodiment of the sound of omission, i.e. the embodiment of noise reduction, please refer to Fig. 2, as follows:
S201, collects the first-phase related parameter of first sound tone signal.
S202, based on first-phase related parameter, generates the second sound signal with second-phase related parameter.
Wherein, the second-phase related parameter of second sound signal mates with first-phase related parameter.
S203, by least one the second audio playing unit output second sound signal, so that first sound tone signal is carried out to noise reduction.
Concrete, in S201, the first-phase related parameter of first sound tone signal is specially phase parameter.In the process of follow-up noise reduction, all carry out noise reduction based on phase parameter.And in the time collecting first-phase related parameter, collect by the first audio playing unit.Such as mobile phone A is in the time that the electric signal that mobile phone B is transmitted is converted to first sound tone signal, can collect the correlation parameter of this first sound tone signal simultaneously, and the correlation parameter of now collecting can have multiple, as wavelength, frequency, cycle, phase place etc., and in the embodiment of the present application, only need to collect phase parameter, other can be used as back-up storage in relevant storage unit.
And in the time collecting this first-phase related parameter, can carry out S202: based on first-phase related parameter, generate the second sound signal with second-phase related parameter.
Wherein, the second-phase related parameter of second sound signal mates with first-phase related parameter.
And concrete embodiment is as follows:
Based on the first phase parameter, obtain the second phase parameter.
In the embodiment of the present application, the phase difference value between the second phase parameter and the first phase parameter is K λ/2, and wherein K is more than or equal to 1 integer, and λ is the wavelength of first sound tone signal.As when the K=1, the difference of the second phase parameter and the first phase parameter is only the half wavelength of first sound tone signal.
According to the second phase parameter, generate second sound signal.
Concrete, other parameters of the second sound signal of generation and first sound tone signal, as wavelength, in the cycle, frequency etc. are all the same, only variant at phase parameter.
As shown in Figure 3, in Fig. 3, first sound tone signal is represented by solid line, is illustrated by the broken lines according to the second sound signal of first sound tone signal generation in concrete description.
Further, in the time of K=1, the phase differential of the first phase parameter of first sound tone signal and the second phase parameter of second sound signal is only λ/2, i.e. half wavelength.
In Fig. 3, can clearly know the physical relationship of first sound tone signal and second sound signal.
Further, in the time having obtained second sound signal, can carry out implementation process below:
By at least one the second audio playing unit output second sound signal, so that second sound signal and first sound tone signal superpose, first sound tone signal is carried out to noise reduction.
Concrete, when answering while being only provided with second audio playing unit in module, use this second audio playing unit to play second sound signal, itself and first sound tone signal are superposeed.
When answering while being only provided with multiple the second audio playing unit in module, use multiple the second audio playing units to play second sound signals, itself and first sound tone signal are superposeed.
Further, in the time that the two superposes, due to the single spin-echo of the first phase parameter and the second phase parameter, therefore two row sound waves are after stack, and second sound signal can weaken first sound tone signal, and then reaches the effect of noise reduction.
In the above embodiments, specifically introduce a kind of noise-reduction method, object is the leakage sound existing while eliminating the voice signal sending at other mobile phones of broadcasting when hand-held mobile terminal, it is carried out to noise reduction process, and then while ensureing that user receives calls, other users can not eavesdrop conversation content, and then ensure the play sound function of keeping secret of signal of hand-held mobile terminal.Concrete, first to collect the first sound tone signal of playing while receiving calls, then generate second sound signal according to the correlation parameter of first sound tone signal, and use second sound signal to carry out noise reduction to first sound tone signal, and then eliminate the leakage sound existing when hand-held mobile terminal is play, ensure the confidentiality of hand-held mobile terminal in the time using general mode to receive calls.
In the above-described embodiments, disclose the embodiment of noise-reduction method, and in the following embodiments, specifically introduced hand-held mobile terminal corresponding to the method.
Embodiment bis-:
In the embodiment of the present application, provide a kind of hand-held mobile terminal.
Further, in hand-held mobile terminal, be provided with and answer module.
Further, answer inside modules and be provided with the first audio playing unit, for in the time of hand-held mobile terminal and the second hand-held communication of mobile terminal, the first sound tone signal that broadcasting the second hand-held mobile terminal sends, answers and in module, is provided with at least one second audio playing unit.
More specifically, in hand-held mobile terminal answer module with and inner structure as shown in Figure 1, repeat no more in this application.
Please refer to Fig. 4 below, hand-held mobile terminal specifically comprises:
Collector unit 401, for collecting the first-phase related parameter of first sound tone signal.
Obtain unit 402, for based on first-phase related parameter, generate the second sound signal with second-phase related parameter.
Wherein, the second-phase related parameter of second sound signal mates with first-phase related parameter.
At least one second audio playing unit 403, carries out noise reduction for exporting second sound signal to first sound tone signal.
Further, first-phase related parameter is specially phase parameter.
Further, obtain unit 402, specifically comprise:
Obtain subelement, for based on the first phase parameter, obtain the second phase parameter, wherein, the phase difference value between the second phase parameter and the first phase parameter is K λ/2, and wherein K is more than or equal to 1 integer, and λ is the wavelength of first sound tone signal.
Generation unit, for according to the second phase parameter, generates second sound signal.
Further, at least one second audio playing unit 403, specifically for output second sound signal, so that second sound signal and first sound tone signal superpose, carries out noise reduction to first sound tone signal.
By one or more embodiment of the present invention, can be achieved as follows technique effect:
In one or more embodiment of the application, first in structure aspects, by being provided with at least one second audio playing unit in module and carrying out noise reduction answering, and, first collect the first-phase related parameter of first sound tone signal; Then based on first-phase related parameter, generate the second sound signal with second-phase related parameter, wherein, the second-phase related parameter of second sound signal mates with first-phase related parameter; Finally, by least one the second audio playing unit output second sound signal, so that first sound tone signal is carried out to noise reduction, eliminate the sound spilling from answer module, ensure the confidentiality of call.
Further, to be basis by the phase parameter of first sound tone signal, generate second sound signal, because the second phase parameter of second sound signal and the phase difference value of the first phase parameter are K λ/2, therefore in the time carrying out noise reduction, can eliminate well the voice signal of omitting from receiver, reach de-noising effect well.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, completely implement software example or the form in conjunction with the embodiment of software and hardware aspect.And the present invention can adopt the form at one or more upper computer programs of implementing of computer-usable storage medium (including but not limited to magnetic disk memory, CD-ROM, optical memory etc.) that wherein include computer usable program code.
The present invention is with reference to describing according to process flow diagram and/or the block scheme of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or block scheme and/or square frame and process flow diagram and/or block scheme and/or the combination of square frame.Can provide these computer program instructions to the processor of multi-purpose computer, special purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction that makes to carry out by the processor of computing machine or other programmable data processing device produces the device for realizing the function of specifying at flow process of process flow diagram or multiple flow process and/or square frame of block scheme or multiple square frame.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of specifying in flow process of process flow diagram or multiple flow process and/or square frame of block scheme or multiple square frame.
These computer program instructions also can be loaded in computing machine or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computing machine or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of specifying in flow process of process flow diagram or multiple flow process and/or square frame of block scheme or multiple square frame on computing machine or other programmable devices.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if these amendments of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (8)
1. a noise-reduction method, described method is applied to the first hand-held mobile terminal, it is characterized in that, in described the first hand-held mobile terminal, be provided with and answer module, the described inside modules of answering is provided with the first audio playing unit, for when described the first hand-held mobile terminal and the second hand-held communication of mobile terminal, plays the first sound tone signal that described the second hand-held mobile terminal sends, described answering in module is provided with at least one second audio playing unit, and described method comprises:
Collect the first-phase related parameter of described first sound tone signal;
Based on described first-phase related parameter, generate the second sound signal with second-phase related parameter;
Export described second sound signal by described at least one second audio playing unit, so that described first sound tone signal is carried out to noise reduction.
2. the method for claim 1, is characterized in that, described first-phase related parameter is specially phase parameter.
3. method as claimed in claim 2, is characterized in that, described based on described first-phase related parameter, generates the second sound signal with second-phase related parameter, specifically comprises:
Based on described the first phase parameter, obtain the second phase parameter, wherein, the phase difference value between described the second phase parameter and described the first phase parameter is K λ/2, and wherein K is more than or equal to 1 integer, and λ is the wavelength of described first sound tone signal;
According to described the second phase parameter, generate described second sound signal.
4. method as claimed in claim 3, is characterized in that, describedly by described second sound signal, described first sound tone signal is carried out to noise reduction, specifically comprises:
Export described second sound signal by described at least one second audio playing unit, so that described second sound signal and described first sound tone signal superpose, described first sound tone signal is carried out to noise reduction.
5. a hand-held mobile terminal, it is characterized in that, in described hand-held mobile terminal, be provided with and answer module, the described inside modules of answering is provided with the first audio playing unit, for in the time of described hand-held mobile terminal and the second hand-held communication of mobile terminal, play the first sound tone signal that described the second hand-held mobile terminal sends, described in answer in module and be provided with at least one second audio playing unit, described hand-held mobile terminal comprises:
Collector unit, for collecting the first-phase related parameter of described first sound tone signal;
Obtain unit, for based on described first-phase related parameter, generate the second sound signal with second-phase related parameter, wherein, the second-phase related parameter of described second sound signal mates with described first-phase related parameter;
Described at least one second audio playing unit, carries out noise reduction for exporting described second sound signal to described first sound tone signal.
6. hand-held mobile terminal as claimed in claim 5, is characterized in that, described first-phase related parameter is specially phase parameter.
7. hand-held mobile terminal as claimed in claim 6, is characterized in that, described acquisition unit, specifically comprises:
Obtain subelement, for based on described the first phase parameter, obtain the second phase parameter, wherein, phase difference value between described the second phase parameter and described the first phase parameter is K λ/2, and wherein K is more than or equal to 1 integer, and λ is the wavelength of described first sound tone signal;
Generation unit, for according to described the second phase parameter, generates described second sound signal.
8. hand-held mobile terminal as claimed in claim 7, it is characterized in that, described at least one second audio playing unit is specifically for exporting described second sound signal, so that described second sound signal and described first sound tone signal superpose, described first sound tone signal is carried out to noise reduction.
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Application publication date: 20140910 |