CN105744429A - Headset noise reduction method based on mobile terminal, mobile terminal and noise reduction headset - Google Patents
Headset noise reduction method based on mobile terminal, mobile terminal and noise reduction headset Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1083—Reduction of ambient noise
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Abstract
The invention relates to the field of headset noise reduction, and discloses a headset noise reduction method based on a mobile terminal, the mobile terminal and a noise reduction headset. The mobile terminal is connected with the noise reduction headset. The headset noise reduction method comprises the following steps: receiving inner ear video signals acquired by an inner ear microphone of the headset; filtering the inner ear video signals so as to obtain inner ear noise signals in the inner ear video signals; generating noise reduction signals for counteracting the inner ear noise signals according to the inner ear noise signals; and overlapping the generated noise reduction signals with audio signals of played audios, and outputting the overlapped audio signals to the headset. By adopting the headset noise reduction method, the mobile terminal and the noise reduction headset, the effect of inner ear noise reduction can be achieved, and relatively good auditory sense can be provided for users.
Description
Technical field
The present invention relates to earphone noise reduction field, in particular it relates to a kind of based on the earphone noise-reduction method of mobile terminal, mobile terminal and noise cancelling headphone.
Background technology
Current active noise reduction earphone is by enrolling the noise in the external world with needing the audio frequency play to carry out wave absorption algorithm and reach the purpose of noise reduction, but owing to active noise reduction earphone major part is based on In-Ear Headphones, if causing the introducing having noise in internal ear actively not eliminated.Namely, owing to the existence of interior ear noise still can hear the noise in the external world time user uses existing noise cancelling headphone, user is caused to use auditory effect during earphone to reduce, it is impossible to provide the user clean audio frequency, be correspondingly also just unable to reach user's audition and better test effect.
Summary of the invention
It is an object of the invention to provide a kind of based on the earphone noise-reduction method of mobile terminal, mobile terminal and noise cancelling headphone, to solve above-mentioned the problems of the prior art.
To achieve these goals, the present invention provides a kind of earphone noise-reduction method based on mobile terminal, and for mobile terminal, wherein, mobile terminal is connected with earphone, and the method includes:
Receive the interior monaural audio signal gathered from the internal ear mike of described earphone；
It is filtered obtaining the internal ear noise signal in described interior monaural audio signal to described interior monaural audio signal；
The de-noising signal for offsetting described internal ear noise signal is generated based on described internal ear noise signal；And
The audio signal of the de-noising signal generated with play audio frequency is superposed, and the audio signal after superposition is exported to described earphone.
Preferably, the internal ear noise signal being filtered obtaining in described interior monaural audio signal to described interior monaural audio signal includes:
The waveform of the waveform of described interior monaural audio signal Yu the audio signal of play audio frequency is compared；
Waveform portion identical with the waveform of the audio signal of play audio frequency in the waveform of described interior monaural audio signal is removed, obtains described internal ear noise signal.
It is preferably based on the described internal ear noise signal generation de-noising signal for offsetting described internal ear noise signal to include:
Described internal ear noise signal is carried out anti-phase process, generates and the de-noising signal of opposite in phase identical with described internal ear noise signal amplitude.
Present invention also offers a kind of mobile terminal, wherein, mobile terminal is connected with earphone, and this mobile terminal includes:
First receiver module, the interior monaural audio signal that the internal ear mike for receiving from described earphone gathers；
Filtering module, for being filtered obtaining the internal ear noise signal in described interior monaural audio signal to described interior monaural audio signal；
De-noising signal generation module, for generating the de-noising signal for offsetting described internal ear noise signal based on described internal ear noise signal；And
Superposition output module, for the audio signal of the de-noising signal generated with play audio frequency being superposed, and exports the audio signal after superposition to described earphone.
Preferably, the internal ear noise signal that described interior monaural audio signal is filtered obtaining in described interior monaural audio signal by described filtering module includes:
The waveform of the waveform of described interior monaural audio signal Yu the audio signal of play audio frequency is compared；
Waveform portion identical with the waveform of the audio signal of play audio frequency in the waveform of described interior monaural audio signal is removed, obtains described internal ear noise signal.
Preferably, described de-noising signal generation module generates based on described internal ear noise signal and includes for the de-noising signal offsetting described internal ear noise signal:
Described internal ear noise signal is carried out anti-phase process, generates and the de-noising signal of opposite in phase identical with described internal ear noise signal amplitude.
Present invention also offers a kind of earphone noise-reduction method based on mobile terminal, for earphone, wherein, mobile terminal is connected with earphone, and the method includes:
The internal ear mike of described earphone gathers interior monaural audio signal；
The interior monaural audio signal gathered is sent to described mobile terminal by described earphone, wherein said interior monaural audio signal is filtered obtaining the internal ear noise signal in described interior monaural audio signal by described mobile terminal, and generated the de-noising signal for offsetting described internal ear noise signal by described mobile terminal based on described internal ear noise signal, and described de-noising signal is superposed the audio signal after obtaining superposition with the audio signal of play audio frequency by described mobile terminal；And
Described earphone receives the audio signal after the superposition of described mobile terminal output.
Preferably, the internal ear noise signal being filtered obtaining in described interior monaural audio signal to described interior monaural audio signal includes:
The waveform of the waveform of described interior monaural audio signal Yu the audio signal of play audio frequency is compared；
Waveform portion identical with the waveform of the audio signal of play audio frequency in the waveform of described interior monaural audio signal is removed, obtains described internal ear noise signal.
It is preferably based on the described internal ear noise signal generation de-noising signal for offsetting described internal ear noise signal to include:
Described internal ear noise signal is carried out anti-phase process, generates and the de-noising signal of opposite in phase identical with described internal ear noise signal amplitude.
Present invention also offers a kind of noise cancelling headphone based on mobile terminal, wherein, noise cancelling headphone is connected with mobile terminal, and this noise cancelling headphone includes:
Internal ear mike, is used for gathering interior monaural audio signal；
Sending module, interior monaural audio signal for gathering sends to described mobile terminal, wherein said interior monaural audio signal is filtered obtaining the internal ear noise signal in described interior monaural audio signal by described mobile terminal, and generated the de-noising signal for offsetting described internal ear noise signal by described mobile terminal based on described internal ear noise signal, and described de-noising signal is superposed the audio signal after obtaining superposition with the audio signal of play audio frequency by described mobile terminal；And
Second receiver module, is used for the audio signal received after the superposition of described mobile terminal output.
Preferably, described internal ear mike is arranged on the intermediate openings position of the speaker of described noise cancelling headphone, and described internal ear mike is internal ear digital microphone.
Pass through technique scheme, can utilize mobile terminal that the interior monaural audio signal comprising noise of the built-in internal ear mike collection of earphone is received, it is filtered obtaining internal ear noise signal (namely to this interior monaural audio signal again, internal monaural audio signal processes, identify noise signal), and generate de-noising signal for offsetting internal ear noise signal based on this internal ear noise signal, then can by the audio signal of de-noising signal and the play audio frequency of mobile terminal (such as, music signal, voice signal etc.) superposition, and (namely the audio signal after superposition is sent to earphone, noise signal is retransmited back earphone together in company with the audio signal of play audio frequency, and the audio signal following play audio frequency exports through the speaker of earphone together.Thus, the noise signal being superimposed with the audio signal of play audio frequency can be cancelled out each other with the noise signal in internal ear, thus reaching the purpose of internal ear noise reduction, and then can provide the user better audio experience.
Other features and advantages of the present invention will be described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and constitutes the part of description, is used for explaining the present invention, but is not intended that limitation of the present invention together with detailed description below.In the accompanying drawings:
Fig. 1 is the flow chart of the earphone noise-reduction method based on mobile terminal according to one embodiment of the present invention；
Fig. 2 is the flow chart of the earphone noise-reduction method based on mobile terminal according to one embodiment of the present invention；
Fig. 3 is the block diagram of the mobile terminal according to one embodiment of the present invention；
Fig. 4 is the flow chart of the earphone noise-reduction method based on mobile terminal according to one embodiment of the present invention；And
Fig. 5 is the block diagram of the noise cancelling headphone based on mobile terminal according to one embodiment of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.It should be appreciated that detailed description of the invention described herein is merely to illustrate and explains the present invention, it is not limited to the present invention.
Fig. 1 is the flow chart of the earphone noise-reduction method based on mobile terminal according to one embodiment of the present invention, and the method may be used for mobile terminal, for instance, smart mobile phone, panel computer, notebook computer etc.；Mobile terminal can be connected with earphone, for instance is inserted by Earphone joint in the earphone interface that mobile terminal is corresponding.
As it is shown in figure 1, the earphone noise-reduction method based on mobile terminal that one embodiment of the present invention provides includes:
S100, receives the interior monaural audio signal gathered from the internal ear mike of described earphone, and its Middle inner ear mike can be built in earphone, includes the noise signal of internal ear in interior monaural audio signal；
S102, is filtered obtaining the internal ear noise signal in described interior monaural audio signal to described interior monaural audio signal, i.e. internally monaural audio signal processes, and identifies internal ear noise signal (such as, noise signal is generally low frequency signal)；
S104, generates the de-noising signal for offsetting described internal ear noise signal based on described internal ear noise signal, for instance, it is possible to use in prior art, existing denoising algorithm calculates described de-noising signal；And
S106, superposes the audio signal of the de-noising signal generated with play audio frequency, and exports the audio signal after superposition to described earphone, and wherein, the audio signal that mobile terminal is play can be such as music signal or voice signal etc..
Known in conjunction with above-mentioned embodiment, the interior monaural audio signal comprising noise in internal ear can be gathered by built-in internal ear mike in earphone, the interior monaural audio signal utilizing mobile terminal internal headset gram elegance collection is received, it is filtered obtaining internal ear noise signal (namely to this interior monaural audio signal again, internal monaural audio signal processes, identify noise signal), and generate de-noising signal for offsetting internal ear noise signal based on this internal ear noise signal, then can by the audio signal of de-noising signal and the play audio frequency of mobile terminal (such as, music signal, voice signal etc.) superposition, and (namely the audio signal after superposition is sent to earphone, noise signal is retransmited back earphone together in company with the audio signal of play audio frequency, and the audio signal following play audio frequency exports through the speaker of earphone together.Thus, the noise signal being superimposed with the audio signal of play audio frequency can be cancelled out each other with the noise signal in internal ear, thus reaching the purpose of internal ear noise reduction, and then can provide the user better audio experience.
It is, can provide the user, via earphone, the audio frequency that clean nothing is made an uproar by above-mentioned method, thus improving the audio experience of user.
In addition, by mobile terminal, the interior monaural audio signal comprising noise of the built-in internal ear mike collection of earphone is received, processes (filter, generate de-noising signal, Signal averaging etc.), save space and the weight of the hardware control of earphone, make the earphone can be more light small and exquisite, correspondingly also reduce the cost of earphone.
Fig. 2 is the flow chart of the earphone noise-reduction method based on mobile terminal according to one embodiment of the present invention.
As in figure 2 it is shown, be different in that with the earphone noise-reduction method based on mobile terminal shown in Fig. 1, the step S102 in Fig. 1 includes:
S1020, compares the waveform of the waveform of described interior monaural audio signal Yu the audio signal of play audio frequency；
S1022, waveform portion identical with the waveform of the audio signal of play audio frequency in the waveform of described interior monaural audio signal is removed, obtain described internal ear noise signal, namely, part identical with the audio signal of play audio frequency in interior monaural audio signal is rejected (removal meets the audio signal of normal sounding effect, and retains and do not meet the normal audio signal that effect occurs).
Thereby, it is possible to the internal ear noise signal of doping in interior monaural audio signal is filtered out, in order to this internal ear noise signal of later use generates the de-noising signal for eliminating interior ear noise.
The detailed description of all the other steps similar with Fig. 1 refers to the method described by above-mentioned Fig. 1, does not repeat them here.
Shown in above-mentioned Fig. 1 and Fig. 2 based in the earphone noise-reduction method of mobile terminal, step S104 may include that
Described internal ear noise signal is carried out anti-phase process, generates and the de-noising signal of opposite in phase identical with described internal ear noise signal amplitude.
The opposite in phase owing to the de-noising signal of generation is identical with described internal ear noise signal amplitude, so this de-noising signal being superimposed to audio signal that mobile terminal plays and exporting together to earphone, can cancel out each other with the noise signal in internal ear, thus realizing the purpose of internal ear de-noising.
For example, after the interface that user is corresponding by the earphone insertion mobile terminal being built-in with internal ear mike is connected with mobile terminal, when user passes through playing music by mobile terminal (such as, open a certain music player software (APP)) time, the audio signal of this music can be passed through earphone and export to human ear (namely, at this moment sound is had to produce from earphone), now the audio signal in internal ear can be acquired and send to mobile terminal by internal ear mike.After mobile terminal audio signal in receiving internal ear, will therefrom identify internal ear noise signal, and then generate the de-noising signal for offsetting described internal ear noise signal.Then the audio signal of the de-noising signal generated with play music can be superposed and exports to earphone.So, the noise signal being superimposed with the audio signal of play music can be cancelled out each other (that is, being neutralized by noise) with the noise signal in internal ear, thus what user was actually hearing can be just the high-quality music without interior ear noise.
Fig. 3 is the block diagram of the mobile terminal according to one embodiment of the present invention, and this mobile terminal can be connected with earphone.
As it is shown on figure 3, the mobile terminal that one embodiment of the present invention provides includes:
First receiver module 30, the interior monaural audio signal that the internal ear mike for receiving from described earphone gathers, its Middle inner ear audio signal includes the noise signal of internal ear；
Filtering module 32, for being filtered obtaining the internal ear noise signal in described interior monaural audio signal to described interior monaural audio signal, i.e. internally monaural audio signal processes, and identifies internal ear noise signal；
De-noising signal generation module 34, for generating the de-noising signal for offsetting described internal ear noise signal based on described internal ear noise signal；And
Superposition output module 36, for the audio signal of the de-noising signal generated with play audio frequency being superposed, and exports the audio signal after superposition to described earphone.
Known in conjunction with above-mentioned embodiment, the interior monaural audio signal comprising noise in internal ear can be gathered by built-in internal ear mike in earphone, the interior monaural audio signal utilizing mobile terminal internal headset gram elegance collection is received, it is filtered obtaining internal ear noise signal (namely to this interior monaural audio signal again, internal monaural audio signal processes, identify noise signal), and generate de-noising signal for offsetting internal ear noise signal based on this internal ear noise signal, then can by the audio signal of de-noising signal and the play audio frequency of mobile terminal (such as, music signal, voice signal etc.) superposition, and (namely the audio signal after superposition is sent to earphone, noise signal is retransmited back earphone together in company with the audio signal of play audio frequency, and the audio signal following play audio frequency exports through the speaker of earphone together.Thus, the noise signal being superimposed with the audio signal of play audio frequency can be cancelled out each other with the noise signal in internal ear, thus reaching the purpose of internal ear noise reduction, and then can provide the user better audio experience.
According to one embodiment of the present invention, the internal ear noise signal that described interior monaural audio signal is filtered obtaining in described interior monaural audio signal by described filtering module 32 includes:
The waveform of the waveform of described interior monaural audio signal Yu the audio signal of play audio frequency is compared；
Waveform portion identical with the waveform of the audio signal of play audio frequency in the waveform of described interior monaural audio signal is removed, obtains described internal ear noise signal.
Thereby, it is possible to the internal ear noise signal of doping in interior monaural audio signal is filtered out, in order to this internal ear noise signal of later use generates the de-noising signal for eliminating interior ear noise.
According to one embodiment of the present invention, described de-noising signal generation module 34 generates based on described internal ear noise signal and includes for the de-noising signal offsetting described internal ear noise signal:
Described internal ear noise signal is carried out anti-phase process, generates and the de-noising signal of opposite in phase identical with described internal ear noise signal amplitude.
The opposite in phase owing to the de-noising signal of generation is identical with described internal ear noise signal amplitude, so this de-noising signal being superimposed to audio signal that mobile terminal plays and exporting together to earphone, can cancel out each other with the noise signal in internal ear, thus realizing the purpose of internal ear de-noising.
Each functional module of the mobile terminal described by above-mentioned Fig. 3 can be built in mobile terminal in the way of applying (APP), thus realizing corresponding function.When user wants the decrease of noise functions using earphone, open this APP accordingly.
Above-mentioned mobile terminal is corresponding with preceding method, and the detailed description for mobile terminal refers to corresponding part in method, does not repeat them here.
Fig. 4 is the flow chart of the earphone noise-reduction method based on mobile terminal according to one embodiment of the present invention.The method may be used for earphone, and mobile terminal can be connected with earphone.
As shown in Figure 4, the earphone noise-reduction method based on mobile terminal that one embodiment of the present invention provides includes:
S400, the internal ear mike of described earphone gathers interior monaural audio signal, includes the noise signal of internal ear in its Middle inner ear audio signal；
S402, the interior monaural audio signal gathered is sent to described mobile terminal by described earphone, wherein said interior monaural audio signal is filtered obtaining the internal ear noise signal in described interior monaural audio signal by described mobile terminal, and generated the de-noising signal for offsetting described internal ear noise signal by described mobile terminal based on described internal ear noise signal, and described de-noising signal is superposed the audio signal after the audio signal after obtaining superposition obtains superposition with the audio signal of play audio frequency by described mobile terminal；And
S404, described earphone receives the audio signal after the superposition of described mobile terminal output.
Known in conjunction with above-mentioned embodiment, the interior monaural audio signal comprising noise in internal ear can be gathered by built-in internal ear mike in earphone, then the interior monaural audio signal utilizing mobile terminal internal headset gram elegance collection is received, process and (filter, generate de-noising signal, Signal averaging etc.) obtain being superimposed with the audio signal of the play audio frequency of de-noising signal (such as, music signal, voice signal etc.), thus earphone can receive mobile terminal output superposition after audio signal (namely, noise signal is received by earphone together in company with the audio signal of play audio frequency, and the audio signal following play audio frequency exports through the speaker of earphone together.Thus, the noise signal being superimposed with the audio signal of play audio frequency can be cancelled out each other with the noise signal in internal ear, thus reaching the purpose of internal ear noise reduction, and then can provide the user better audio experience.
It is, can provide the user, via earphone, the audio frequency that clean nothing is made an uproar by above-mentioned method, thus improving the audio experience of user.
In addition, by mobile terminal, the interior monaural audio signal comprising noise of the built-in internal ear mike collection of earphone is received, processes (filter, generate de-noising signal, Signal averaging etc.), save space and the weight of the hardware control of earphone, make the earphone can be more light small and exquisite, correspondingly also reduce the cost of earphone.
According to one embodiment of the present invention, the internal ear noise signal that described interior monaural audio signal is filtered obtaining in described interior monaural audio signal by described mobile terminal includes:
The waveform of the waveform of described interior monaural audio signal Yu the audio signal of play audio frequency is compared；
Waveform portion identical with the waveform of the audio signal of play audio frequency in the waveform of described interior monaural audio signal is removed, obtains described internal ear noise signal.
According to one embodiment of the present invention, described mobile terminal generates based on described internal ear noise signal and includes for the de-noising signal offsetting described internal ear noise signal:
Described internal ear noise signal is carried out anti-phase process, generates and the de-noising signal of opposite in phase identical with described internal ear noise signal amplitude.
According to one embodiment of the present invention, in the internal ear mike collection of described earphone, monaural audio signal can be that the interior monaural audio signal that predetermined instant is corresponding is acquired.
Wherein, this predetermined instant also refers to mobile terminal and has play the moment after a period of time audio frequency.This predetermined instant can be configured by those skilled in the art according to practical situation.
When commencing play out audio frequency, play audio frequency can be optimized by usual mobile terminal, and this process sound intermediate frequency signal would be likely to occur fluctuation change, if the audio signal in this period is acquired, it is possible to affect the effect of de-noising.Therefore, by the collection of interior monaural audio signal being defined to above-mentioned predetermined instant (it is believed that this predetermined instant mobile terminal is complete optimization process, audio signal tends towards stability), it can be ensured that the effect of internal ear de-noising preferably.
Fig. 5 is the block diagram of the noise cancelling headphone based on mobile terminal according to one embodiment of the present invention, and this noise cancelling headphone can be connected with mobile terminal.
As it is shown in figure 5, the noise cancelling headphone based on mobile terminal that one embodiment of the present invention provides may include that
Internal ear mike 50, is used for gathering interior monaural audio signal；
Sending module 52, interior monaural audio signal for gathering sends to described mobile terminal, wherein said interior monaural audio signal is filtered obtaining the internal ear noise signal in described interior monaural audio signal by described mobile terminal, and generated the de-noising signal for offsetting described internal ear noise signal by described mobile terminal based on described internal ear noise signal, and described de-noising signal is superposed the audio signal after obtaining superposition with the audio signal of play audio frequency by described mobile terminal；And
Second receiver module 54, is used for the audio signal received after the superposition of described mobile terminal output.
Above-mentioned noise cancelling headphone is corresponding with preceding method, and the detailed description for noise cancelling headphone refers to corresponding part in method, does not repeat them here.
According to one embodiment of the present invention, described internal ear mike 50 is arranged on the intermediate openings position of the speaker of described noise cancelling headphone, and described internal ear mike is internal ear digital microphone (DMIC).
By internal ear mike 50 being arranged on the intermediate openings position of the speaker of described noise cancelling headphone, it is possible to more uniformly gather the audio signal in internal ear, thus ear noise in more precisely eliminating.
It can be seen that of the present invention having the advantage that based on the earphone noise-reduction method of mobile terminal, mobile terminal and noise cancelling headphone eliminates interior ear noise from above-mentioned embodiment, provide the user better audio experience；Save space and the weight of the hardware control of earphone so that earphone can be more light small and exquisite, correspondingly also reduces the cost of earphone.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing; but; the present invention is not limited to the detail in above-mentioned embodiment; in the technology concept of the present invention; technical scheme can being carried out multiple simple variant, these simple variant belong to protection scope of the present invention.
It is further to note that each the concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, it is possible to be combined by any suitable mode.In order to avoid unnecessary repetition, various possible compound modes are no longer illustrated by the present invention separately.
Additionally, can also carry out combination in any between the various different embodiment of the present invention, as long as it is without prejudice to the thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (11)
1., based on an earphone noise-reduction method for mobile terminal, for mobile terminal, wherein, mobile terminal is connected with earphone, and the method includes:
Receive the interior monaural audio signal gathered from the internal ear mike of described earphone；
It is filtered obtaining the internal ear noise signal in described interior monaural audio signal to described interior monaural audio signal；
The de-noising signal for offsetting described internal ear noise signal is generated based on described internal ear noise signal；And
The audio signal of the de-noising signal generated with play audio frequency is superposed, and the audio signal after superposition is exported to described earphone.
2. method according to claim 1, wherein, the internal ear noise signal being filtered obtaining in described interior monaural audio signal to described interior monaural audio signal includes:
The waveform of the waveform of described interior monaural audio signal Yu the audio signal of play audio frequency is compared；
Waveform portion identical with the waveform of the audio signal of play audio frequency in the waveform of described interior monaural audio signal is removed, obtains described internal ear noise signal.
3. method according to claim 1 and 2, wherein, generates based on described internal ear noise signal and includes for the de-noising signal offsetting described internal ear noise signal:
Described internal ear noise signal is carried out anti-phase process, generates and the de-noising signal of opposite in phase identical with described internal ear noise signal amplitude.
4. a mobile terminal, wherein, mobile terminal is connected with earphone, and this mobile terminal includes:
First receiver module, the interior monaural audio signal that the internal ear mike for receiving from described earphone gathers；
Filtering module, for being filtered obtaining the internal ear noise signal in described interior monaural audio signal to described interior monaural audio signal；
De-noising signal generation module, for generating the de-noising signal for offsetting described internal ear noise signal based on described internal ear noise signal；And
Superposition output module, for the audio signal of the de-noising signal generated with play audio frequency being superposed, and exports the audio signal after superposition to described earphone.
5. mobile terminal according to claim 4, wherein, the internal ear noise signal that described interior monaural audio signal is filtered obtaining in described interior monaural audio signal by described filtering module includes:
The waveform of the waveform of described interior monaural audio signal Yu the audio signal of play audio frequency is compared；
Waveform portion identical with the waveform of the audio signal of play audio frequency in the waveform of described interior monaural audio signal is removed, obtains described internal ear noise signal.
6. the mobile terminal according to claim 4 or 5, wherein, described de-noising signal generation module generates based on described internal ear noise signal and includes for the de-noising signal offsetting described internal ear noise signal:
Described internal ear noise signal is carried out anti-phase process, generates and the de-noising signal of opposite in phase identical with described internal ear noise signal amplitude.
7., based on an earphone noise-reduction method for mobile terminal, for earphone, wherein, mobile terminal is connected with earphone, and the method includes:
The internal ear mike of described earphone gathers interior monaural audio signal；
The interior monaural audio signal gathered is sent to described mobile terminal by described earphone, wherein said interior monaural audio signal is filtered obtaining the internal ear noise signal in described interior monaural audio signal by described mobile terminal, and generated the de-noising signal for offsetting described internal ear noise signal by described mobile terminal based on described internal ear noise signal, and described de-noising signal is superposed the audio signal after obtaining superposition with the audio signal of play audio frequency by described mobile terminal；And
Described earphone receives the audio signal after the superposition of described mobile terminal output.
8. method according to claim 7, wherein, the internal ear noise signal being filtered obtaining in described interior monaural audio signal to described interior monaural audio signal includes:
The waveform of the waveform of described interior monaural audio signal Yu the audio signal of play audio frequency is compared；
Waveform portion identical with the waveform of the audio signal of play audio frequency in the waveform of described interior monaural audio signal is removed, obtains described internal ear noise signal.
9. the method according to claim 7 or 8, wherein, generates based on described internal ear noise signal and includes for the de-noising signal offsetting described internal ear noise signal:
Described internal ear noise signal is carried out anti-phase process, generates and the de-noising signal of opposite in phase identical with described internal ear noise signal amplitude.
10. based on a noise cancelling headphone for mobile terminal, wherein, noise cancelling headphone is connected with mobile terminal, and this noise cancelling headphone includes:
Internal ear mike, is used for gathering interior monaural audio signal；
Sending module, interior monaural audio signal for gathering sends to described mobile terminal, wherein said interior monaural audio signal is filtered obtaining the internal ear noise signal in described interior monaural audio signal by described mobile terminal, and generated the de-noising signal for offsetting described internal ear noise signal by described mobile terminal based on described internal ear noise signal, and described de-noising signal is superposed the audio signal after obtaining superposition with the audio signal of play audio frequency by described mobile terminal；And
Second receiver module, is used for the audio signal received after the superposition of described mobile terminal output.
11. noise cancelling headphone according to claim 10, wherein, described internal ear mike is arranged on the intermediate openings position of the speaker of described noise cancelling headphone, and described internal ear mike is internal ear digital microphone.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN112203178A (en) * | 2020-09-23 | 2021-01-08 | 江苏视天虚拟现实科技有限公司 | XR glasses and noise reduction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN107360318A (en) * | 2017-06-30 | 2017-11-17 | 维沃移动通信有限公司 | Voice de-noising method, device, mobile terminal and computer-readable recording medium |
| CN107360318B (en) * | 2017-06-30 | 2020-01-14 | 维沃移动通信有限公司 | Voice noise reduction method and device, mobile terminal and computer readable storage medium |
| WO2020051769A1 (en) * | 2018-09-11 | 2020-03-19 | 深圳市汇顶科技股份有限公司 | Active noise cancelling method and headset |
| CN111035323A (en) * | 2019-12-17 | 2020-04-21 | 上海岚豹智能科技有限公司 | Method, equipment and system for actively reducing noise of sweeping robot |
| CN112203178A (en) * | 2020-09-23 | 2021-01-08 | 江苏视天虚拟现实科技有限公司 | XR glasses and noise reduction method |
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