CN103219011A - Noise reduction method, noise reduction device and communication terminal - Google Patents
Noise reduction method, noise reduction device and communication terminal Download PDFInfo
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Abstract
The invention discloses a noise reduction method, a noise reduction device and a communication terminal which are used for solving the noise interference problem in communication terminal conversation. The noise reduction method comprises controlling a first voice frequency input device to collect noise in an environment where the communication terminal is located; carrying out spectral analysis comparison on the environment noise and pre-stored scene noise in the communication terminal to obtain a comparison result; and according to the comparison result, calling noise reduction parameters corresponding to the environment noise, and according to the noise reduction parameters, separating user sound collected by a second voice frequency input device. The noise reduction method, the noise reduction device and the communication terminal have the advantages that through man-machine interaction, an exclusive button is set, a recording menu is called by triggering the button, a user can record noise in a user-defined mode and set the noise reduction parameters, in a conversation state, the user sound is separated through scene noise identification, conversation quality of the communication terminal is improved, and noise reduction cost of the communication terminal is saved.
Description
Technical field
The present invention relates to the noise reduction process of communication facilities, more specifically, relate to a kind of noise-reduction method, device and communication terminal.
Background technology
The development with rapid changepl. never-ending changes and improvements of science and technology, people are also more and more higher to the requirement of communication quality, and the conversation noise reduction is exactly the product of reply quality-improving.The existing noise-reduction method algorithm by noise reduction, structural design, circuit or the like mode is mostly realized, application number for example: 200820051730.4 utility model patent discloses a kind of denoising device and noise reduction portable terminal, and described denoising device comprises: the noise acquisition module of acquisition noise signal; The noise signal of utilizing described noise acquisition module to be gathered, to the noise reduction module that the noise signal in the sound signal that comprises noise is offset or weakened, the input end of described noise reduction module links to each other with the output terminal of described noise acquisition module.The above-mentioned noise reduction mode that realizes by structural design can reach the purpose of eliminating or weakening the neighbourhood noise in the sound signal, but has the high problem of design cost.
Summary of the invention
The invention provides a kind of noise-reduction method, device and communication terminal, be used for solving the prior art hardware configuration and design the high problem of the existing cost of noise reduction purpose that reaches.
For achieving the above object,, provide a kind of noise-reduction method according to first method of the present invention, and by the following technical solutions:
Noise-reduction method is applied to communication terminal, and described communication terminal comprises first audio input device and second audio input device, and described noise-reduction method comprises: control described first audio input device and gather the residing neighbourhood noise of described communication terminal; The scene noise that prestores in described neighbourhood noise and the described communication terminal is carried out the spectrum analysis contrast, and get a contrast result; And, call the noise reduction parameters of described neighbourhood noise correspondence, and isolate the user voice that described second audio input device is gathered according to described noise reduction parameters according to described comparing result.
Further, obtaining the described scene noise that prestores comprises: record and the corresponding scene noise of residing first scene of described communication terminal; Preserve described scene noise and the noise reduction parameters of described scene noise correspondence is set.
Further, describedly obtain the described scene noise that prestores and also comprise: call the menu of recording of described communication terminal by programmable button, described programmable button be used to the to prestore scene noise of described communication terminal; Select residing described first scene of described communication terminal or record self-defined described first scene in the menu from described record the menu described.
Further, before described first audio input device of described control was gathered the residing neighbourhood noise of described communication terminal, described noise-reduction method also comprised: judge whether described programmable button is triggered, and get a judged result; In described judged result is that described programmable button is triggered, and carries out described first audio input device of described control and gathers the residing neighbourhood noise of described communication terminal; In described judged result is that described programmable button is not triggered, and controls the described second audio input device work.
Further,, call before the noise reduction parameters of described neighbourhood noise correspondence according to described comparing result described, described noise-reduction method also comprises: confirm residing second scene of described communication terminal according to described comparing result; Determine the neighbourhood noise of the described second scene correspondence.
According to a second aspect of the invention, provide a kind of denoising device, and by the following technical solutions:
Denoising device, be applied to communication terminal, described communication terminal comprises first audio input device and second audio input device, and described denoising device comprises: first control module is used to control described first audio input device and gathers the residing neighbourhood noise of described communication terminal; The contrast module is used for the scene noise that described neighbourhood noise and described communication terminal prestore is carried out the spectrum analysis contrast, and one contrast the result; And separation module, be used for calling the noise reduction parameters of described neighbourhood noise correspondence, and isolate the user voice that described second audio input device is gathered according to described noise reduction parameters according to described comparing result.
Further, denoising device also comprises: acquisition module is used to obtain the described scene noise that prestores; Described acquisition module comprises: record module, be used to record and the corresponding scene noise of residing first scene of described communication terminal; Preserve and module is set, the noise reduction parameters that is used to preserve described scene noise and described scene noise correspondence is set.
Further, described acquisition module also comprises: calling module is used for calling by programmable button the menu of recording of described communication terminal, described programmable button be used to the to prestore scene noise of described communication terminal; Select module, be used for selecting residing described first scene of described communication terminal or recording self-defined described first scene the menu described from the described menu of recording.
Further, denoising device also comprises: judge module is used to judge whether described programmable button is triggered, and gets a judged result; Execution module, being used in described judged result is that described programmable button is triggered, and carries out described first audio input device of described control and gathers the residing neighbourhood noise of described communication terminal; Second control module, being used in described judged result is that described programmable button is not triggered, and controls the described second audio input device work.
According to a third aspect of the present invention, provide a kind of communication terminal, and by the following technical solutions:
Communication terminal comprises above-mentioned denoising device.
The present invention is by being provided with an exclusive button, can make and man-machinely carry out alternately, the user can button operation be self-defined records noise and noise reduction parameters is set by this, under holding state, can the prestore noise of environment of living in of user, under talking state,, and carry out spectrum analysis contrast with the scene noise that prestores by the self study environmental noise, identification scene noise, user voice is separated, improved the speech quality of communication terminal, reduced communication terminal noise reduction cost.
Except purpose described above, feature and advantage, the present invention also has other purpose, feature and advantage.With reference to figure, the present invention is further detailed explanation below.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 represents the main process flow diagram of the described noise-reduction method of the embodiment of the invention;
Fig. 2 represents to record the menu synoptic diagram in the described noise-reduction method of the embodiment of the invention;
Fig. 3 represents the described scene noise process flow diagram that prestores that obtains of the embodiment of the invention;
Fig. 4 represents the described noise-reduction method particular flow sheet of the embodiment of the invention; And
Fig. 5 represents the described denoising device structural representation of the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
Fig. 1 represents the main process flow diagram of the described noise-reduction method of the embodiment of the invention.
Referring to shown in Figure 1, noise-reduction method comprises:
S101: control the first audio input device collection and record the residing neighbourhood noise of menu communication terminal;
S103: with neighbourhood noise with record the scene noise that prestores in the menu communication terminal and carry out spectrum analysis contrast, and a contrast result; And
S105: according to comparing result, the noise reduction parameters of transfer environment noise correspondence, and isolate the user voice of second audio input device collection according to noise reduction parameters.
In the technique scheme of present embodiment, open first audio input device and second audio input device simultaneously, wherein, the neighbourhood noise of the first audio input device collection site, carry out the spectrum analysis comparison with each scene noise that prestores in the neighbourhood noise of collection in worksite and the communication terminal, each scene noise may comprise: the market noise, the dining room noise, bar noise and internal car noise or the like, by above-mentioned analyses and comparison, confirm the pairing scene of site environment noise, call the noise reduction parameters of this scene correspondence according to scene, the sound that second audio input device is collected separates then, obtains user's communication sound clearly.This method is not changed any hardware of existing equipment, has reduced communication terminal noise reduction cost.
Fig. 2 represents to record the menu synoptic diagram in the described noise-reduction method of the embodiment of the invention.
Fig. 3 represents the described scene noise process flow diagram that prestores that obtains of the embodiment of the invention.
, obtain the described scene noise that prestores and comprise to shown in Figure 3 referring to Fig. 2:
Step 301: mobile phone power-on enters holding state;
Step 302: press " intelligence tone keys " 9;
In this step, " intelligence tone keys " 9 can be arbitrary button on the predefined mobile phone, by this button is set, when obtaining the scene noise, as long as trigger " intelligence tone keys " 9, just can access and record menu, carry out recording of scene noise, and corresponding noise reduction parameters is set for the scene noise.
Step 303: access the setting of intelligence sound Administration menu;
This intelligence sound Administration menu setting is the above-mentioned menu of recording.
Step 304: prompting is recorded the various scene noises of 00-08 and is preserved according to scene;
In this step, 8 scenes that 01-08 kind scene noise can set in advance for cell phone system are as internal car noise, bar noise, the dining room noise is waited for, 00 can be the User Defined neighbourhood noise, and as cinema's noise, road noise or the like, the user can select as required or be self-defined.
Step 305: noise reduction correlation parameter and preservation are set under the various scene modes;
After the user records the scene noise corresponding with residing first scene of described communication terminal, preserve this scene noise, and noise reduction parameters is set for this scene noise, noise reduction parameters herein is that the sound that is used for second audio input device afterwards separates, because it is multiple that the method for separating can have, therefore corresponding noise reduction parameters also has different methods to set up, but these methods are state of the art means, therefore, do not do concrete elaboration herein.
Step 306: withdraw from intelligence sound Administration menu.
In the technique scheme of present embodiment, the scene noise that prestores relies on exclusive " an intelligence tone keys ", this button can be the arbitrary button on the mobile phone, simultaneously, this button both can be mechanical keyboard, also can make touch virtual key, by the menu of recording in this case calling mobile phone, by the scene noise of on menu, selecting or record at the self-defined scene scene of preserving, and be the noise reduction parameters that this scene noise is provided with described scene noise correspondence.
Fig. 4 represents the described noise-reduction method particular flow sheet of the embodiment of the invention.
Referring to shown in Figure 4, noise-reduction method specifically can comprise:
Step 401: handset dialing enters talking state;
Step 402: judged whether by " intelligence tone keys " 9, if execution in step 403, if not, execution in step 404;
" intelligence tone keys " 9 is referring to shown in Figure 2.
Step 403: start decrease of noise functions, open first microphone 11 and second microphone 10 simultaneously;
Step 404: do not start decrease of noise functions, only open 10 work of second microphone;
Step 405: first microphone 11 begins study and enrolls ambient noise automatically;
Step 406: the real-time recording neighbourhood noise and with preset various scene noises and carry out spectrum analysis comparison;
Step 407: judge the present residing environment of user;
In this step, by the spectrum analysis comparison of step 406, judge the present residing environment of user, the possibility of result of judgement can draw two kinds, the one, the residing environment of user does not belong to any one scene that prestores, and another is that the residing environment of user belongs to a certain scene that presets.For first result, return execution in step 406, for second kind of result, execution in step 408.
Step 408: call the noise reduction parameters that presets corresponding scene immediately;
Step 409: the validated user sound that second microphone 10 is collected separates with noise;
In this step, according to existing noise reduction parameters, it is existing technological means that the user voice in " noise+user voice " is separated.
By the above-mentioned technological means of present embodiment, can obtain the sound of conversing clearly, if before entering talking state, do not trigger " intelligence tone keys ", then system does not start decrease of noise functions, enters conventional call mode.
Fig. 5 represents that the embodiment of the invention records the denoising device structural representation of menu.
Referring to shown in Figure 5, denoising device comprises: first control module 51 is used for control and records the menu first audio input device collection and record the residing neighbourhood noise of menu communication terminal; Contrast module 53 is used for and will records the menu neighbourhood noise and record the scene noise that the menu communication terminal prestores and carry out the spectrum analysis contrast, and a contrast result; And separation module 55, be used for calling the noise reduction parameters of recording menu neighbourhood noise correspondence, and isolate the user voice of recording the collection of menu second audio input device according to recording the menu noise reduction parameters according to recording the menu comparing result.
Alternatively, denoising device also comprises: the acquisition module (not shown) is used to obtain and records the scene noise that menu prestores; Recording the menu acquisition module comprises: record the module (not shown), be used to record and record the corresponding scene noise of residing first scene of menu communication terminal; Preserve and the module (not shown) is set, be used to preserve and record menu scene noise and the noise reduction parameters of recording menu scene noise correspondence is set.
Alternatively, record the menu acquisition module and also comprise: the calling module (not shown), be used for calling the menu of recording of recording the menu communication terminal by programmable button, record the scene noise that the menu programmable button is used to prestore and records the menu communication terminal; Select the module (not shown), be used for selecting residing first scene of communication terminal from recording menu.
Alternatively, denoising device also comprises: the judge module (not shown) is used for judging whether record the menu programmable button is triggered, and gets a judged result; The execution module (not shown) is used for being triggered for recording the menu programmable button recording the menu judged result, carries out to record menu control and record the menu first audio input device collection and record the residing neighbourhood noise of menu communication terminal; The second control module (not shown) is used for not being triggered for recording the menu programmable button recording the menu judged result, and the menu second audio input device work is recorded in control.
Communication terminal comprises above-mentioned denoising device.
The present invention is by being provided with an exclusive button, can make man-machine carrying out alternately, the user can record noise and noise reduction parameters is set by the operation of this button is self-defined, under holding state, and can the prestore noise of environment of living in of user, under talking state, by the self study environmental noise, and carry out spectrum analysis contrast, identification scene noise with the scene noise that prestores, user voice is separated, improved the speech quality of communication terminal.And this method is not done any improvement to hardware based on original hardware design of communication terminal, has saved the noise reduction cost of communication terminal, has improved the user experience of communication terminal.
Claims (10)
1. a noise-reduction method is applied to communication terminal, and described communication terminal comprises first audio input device and second audio input device, it is characterized in that, described noise-reduction method comprises:
Control described first audio input device and gather the residing neighbourhood noise of described communication terminal;
The scene noise that prestores in described neighbourhood noise and the described communication terminal is carried out the spectrum analysis contrast, and get a contrast result; And
According to described comparing result, call the noise reduction parameters of described neighbourhood noise correspondence, and isolate the user voice that described second audio input device is gathered according to described noise reduction parameters.
2. noise-reduction method as claimed in claim 1 is characterized in that, obtains the described scene noise that prestores and comprises:
Record and the corresponding scene noise of residing first scene of described communication terminal;
Preserve described scene noise and the noise reduction parameters of described scene noise correspondence is set.
3. noise-reduction method as claimed in claim 2 is characterized in that, describedly obtains the described scene noise that prestores and also comprises:
Call the menu of recording of described communication terminal by programmable button, described programmable button be used to the to prestore scene noise of described communication terminal;
Select residing described first scene of described communication terminal or record self-defined described first scene in the menu from described record the menu described.
4. noise-reduction method as claimed in claim 3 is characterized in that, before described first audio input device of described control was gathered the residing neighbourhood noise of described communication terminal, described noise-reduction method also comprised:
Judge whether described programmable button is triggered, and get a judged result;
In described judged result is that described programmable button is triggered, and carries out described first audio input device of described control and gathers the residing neighbourhood noise of described communication terminal;
In described judged result is that described programmable button is not triggered, and controls the described second audio input device work.
5. noise-reduction method as claimed in claim 1 is characterized in that,, calls before the noise reduction parameters of described neighbourhood noise correspondence according to described comparing result described, and described noise-reduction method also comprises:
Confirm residing second scene of described communication terminal according to described comparing result;
Determine the neighbourhood noise of the described second scene correspondence.
6. a denoising device is applied to communication terminal, and described communication terminal comprises first audio input device and second audio input device, it is characterized in that, described denoising device comprises:
First control module is used to control described first audio input device and gathers the residing neighbourhood noise of described communication terminal;
The contrast module is used for the scene noise that described neighbourhood noise and described communication terminal prestore is carried out the spectrum analysis contrast, and one contrast the result; And
Separation module is used for calling the noise reduction parameters of described neighbourhood noise correspondence according to described comparing result, and isolates the user voice that described second audio input device is gathered according to described noise reduction parameters.
7. denoising device as claimed in claim 6 is characterized in that, also comprises:
Acquisition module is used to obtain the described scene noise that prestores;
Described acquisition module comprises:
Record module, be used to record and the corresponding scene noise of residing first scene of described communication terminal;
Preserve and module is set, the noise reduction parameters that is used to preserve described scene noise and described scene noise correspondence is set.
8. denoising device as claimed in claim 7 is characterized in that, described acquisition module also comprises:
Calling module is used for calling by programmable button the menu of recording of described communication terminal, described programmable button be used to the to prestore scene noise of described communication terminal;
Select module, be used for selecting residing described first scene of described communication terminal or recording self-defined described first scene the menu described from the described menu of recording.
9. denoising device as claimed in claim 8 is characterized in that, also comprises:
Judge module is used to judge whether described programmable button is triggered, and gets a judged result;
Execution module, being used in described judged result is that described programmable button is triggered, and carries out described first audio input device of described control and gathers the residing neighbourhood noise of described communication terminal;
Second control module, being used in described judged result is that described programmable button is not triggered, and controls the described second audio input device work.
10. a communication terminal is characterized in that, comprises each described denoising device in the claim 6 to 9.
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Application publication date: 20130724 |