CN102088521A - Method for improving communication quality based on ambient noise sensing and electronic device - Google Patents
Method for improving communication quality based on ambient noise sensing and electronic device Download PDFInfo
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- CN102088521A CN102088521A CN2009102604575A CN200910260457A CN102088521A CN 102088521 A CN102088521 A CN 102088521A CN 2009102604575 A CN2009102604575 A CN 2009102604575A CN 200910260457 A CN200910260457 A CN 200910260457A CN 102088521 A CN102088521 A CN 102088521A
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Abstract
The invention provides a method for improving the communication quality based on ambient noise sensing, which is used for improving the communication quality of an electronic device for communication. The method comprises the following steps: in a conversation, responding to the changes of the ambient noise of at least one sound signal received by the electronic device, and setting a noise suppression mode dynamically. The setting steps are as follows: in a conversation, dynamically judging the volume of the ambient noise to determine whether noise suppression is required or not; if the volume of the ambient noise indicates that the noise suppression is required, selecting one noise suppression level among a plurality of noise suppression levels in accordance with the volume of the ambient noise; and according to the selected noise suppression level, setting a noise suppression mode, wherein the noise suppression levels comprise at least two levels corresponding to two types of noise suppression capacities with different volumes.
Description
Technical field
The invention relates to a kind of improvement method and electronic installation of communication quality, and particularly relevant for a kind of improvement method and mobile device of the communication quality based on the environmental noise sensing.
Background technology
Mobile device for example mobile phone the time all can suffer from communication quality in conversation usually and is subjected to the environmental noise influence and the problem of variation.Voice this side who gives orders or instructions make the other side can not hear clearly because environmental noise is very big.The tradition solution is to use the algorithm with fixing noise suppression amount that environmental noise level is reduced.And adopt comparatively fierce noise suppression mode just can contain the demand of noise suppression under the various varying environments.
But above-mentioned traditional way probably has influence on the quality of speaker speech and makes the communication quality variation, moreover, quietly consuming extra power again in the environment.
Summary of the invention
The invention relates to a kind of improvement method and electronic installation of the communication quality based on the environmental noise sensing, by the environmental noise amount of sensing, in conversation, dynamically set the noise suppression pattern, make it variation size, use different noise suppression amounts in response to the environmental noise amount.As shown in the Examples, communication quality can improve, and can save power consumption.
According to an aspect of the present invention, a kind of improvement method of the communication quality based on the environmental noise sensing is proposed, in order to improve a communication quality in order to the electronic installation of communication.The method comprises: in a conversation, response is dynamically set a noise suppression pattern according to the variation of an environmental noise amount of at least one voice signal of electronic installation reception.This sets step and comprises: in conversation, judge dynamically whether environmental noise amount size needs to use noise suppression.If the representative of environmental noise amount needs to use noise suppression, then according to the size of environmental noise amount, from a plurality of noise suppression grades, choose one, and according to the noise suppression grade that is selected, set the noise suppression pattern, wherein these a plurality of noise suppression grades comprise that at least two grades are to correspond to two noise suppression amounts that vary in size.
According to a further aspect in the invention, propose a kind of electronic installation, electronics also can be based on the environmental noise sensing to improve communication quality in order to communication, and electronic installation comprises: at least one microphone, acoustic processing module and processing module.At least one microphone in order to sensing sound to produce at least one output signal.The acoustic processing module couples this at least one microphone, in order to handle at least one output signal so that produce at least one voice signal.In a conversation, processing module is dynamically set a noise suppression pattern in order to the variation of response according to an environmental noise amount (ambient noise amount) of at least one voice signal.In conversation, processing module judges dynamically whether environmental noise amount size needs to use noise suppression; If the representative of environmental noise amount needs to use noise suppression, then processing module is according to the size of environmental noise amount, from a plurality of noise suppression grades, choose one, and according to the noise suppression grade that is selected, set the noise suppression pattern, wherein these a plurality of noise suppression grades comprise that at least two grades are to correspond to two noise suppression amounts that vary in size.
In accordance with a further aspect of the present invention, proposing a kind of electronic installation in order to communication also can be based on the environmental noise sensing to improve communication quality.Electronic installation comprises: at least one microphone and acoustic processing module.At least one microphone, in order to sensing sound to produce at least one output signal.The acoustic processing module couples at least one microphone, in order to handle at least one output signal so that produce an environmental noise amount.In a conversation, the acoustic processing module is dynamically set a noise suppression pattern in order to the variation of response according to the environmental noise amount.In conversation, the acoustic processing module judges dynamically whether environmental noise amount size needs to use noise suppression; If the representative of environmental noise amount needs to use noise suppression, then acoustic processing module is according to the size of environmental noise amount, from a plurality of noise suppression grades, choose one, and according to the noise suppression grade that is selected, set the noise suppression pattern, wherein these a plurality of noise suppression grades comprise that at least two grades are to correspond to two noise suppression amounts that vary in size.
For foregoing of the present invention can be become apparent, preferred embodiment cited below particularly, and cooperate appended graphicly, be described in detail below.
Description of drawings
Fig. 1 illustrates the flow chart based on the improvement method of the communication quality of environmental noise sensing according to one embodiment of the invention.
Fig. 2 is a schematic diagram, dynamically sets the situation of noise suppression pattern according to one embodiment of the invention with explanation.
Fig. 3 illustrate an embodiment before conversation according to the environmental noise amount, control the flow chart of the volume of incoming ring tone.
Fig. 4 illustrates the system block diagrams according to one embodiment of the invention.
Fig. 5 illustrates the calcspar according to the signal processing module of one embodiment of the invention.
[main element label declaration]
400: electronic apparatus system 410: processing unit
420,520: signal processing module 450: microphone
460: loud speaker 521: analog-digital converter
523: digital analog converter 530: digital signal processor
531: noise reducing circuit 533: the noise estimation circuit
535: amplifier S100～S150, S300～S330: step
Embodiment
The present invention proposes a kind of improvement method of the communication quality based on the environmental noise sensing, can be applicable in any electronic installation that can receive audio frequency, and for example be mobile operation device, among laptop computer, mobile phone, network phone device or automobile hands-free device.By the environmental noise amount of sensing, dynamically set the noise suppression pattern, make it variation size in response to the environmental noise amount, use different noise suppression amounts.
Figure 1 shows that the improvement method of an embodiment based on the communication quality of environmental noise sensing.In the method shown in Figure 1, when handling a talking state, respond the variation of an environmental noise amount (ambient noiseamount), dynamically set an embodiment of a noise suppression pattern, wherein the environmental noise amount is to estimate according to a voice signal or a plurality of voice signal and get, and voice signal can be that the microphone by mobile device is produced.Step S100 representative is in once conversing, and this conversation can be the conversation that the conversation or of an incoming call is given orders or instructions.Step S110 is used for judging why set the noise suppression pattern.For example step S111 judges whether the size of environmental noise amount needs to use noise suppression.As step S120, if need to use noise suppression, then, from a plurality of noise suppression grades, choose one according to the size of environmental noise amount, wherein these noise suppression grades comprise that at least two grades are to correspond to two noise suppression amounts that vary in size.For example, be in a high noise environments,, in step S120, can choose corresponding noise suppression grade 2 (shown in square S132), to correspond to the pattern that the noise suppression amount is 20dB according to the environmental noise amount as mobile device; As being to be in a relative lower noise environment at present,, in step S120, can choose corresponding noise suppression grade 1 (shown in square S131), to correspond to the pattern that the noise suppression amount is 10dB according to the environmental noise amount.Then, in step S140,, set the noise suppression pattern according to the noise suppression grade that is selected.If the representative of the size of environmental noise amount does not need to use noise suppression, shown in step S137, then when execution in step S137, set the noise suppression pattern to stop noise suppression, that is to say, stop or the effect of the relevant inhibit feature of forbidden energy.Afterwards, shown in step S150,, then finish the method if conversation finishes; If conversation is still being carried out, then can continue to repeat aforementioned suddenly till end of conversation.
Above-mentioned steps S110 is the variation according to the environmental noise amount, decides the noise suppression pattern.For example, by judge the environmental noise amount whether fall into one first scope as greater than the scope of-70dB dynamically to judge whether to need to use noise suppression.And first scope contains a plurality of subranges, for example a subrange for-70dB and-50dB between corresponding to noise suppression grade 1, another subrange for more than or equal to-50dB to correspond to noise suppression grade 2.By judging that the environmental noise amount is to fall within which subrange of first scope to choose one from these noise suppression grades.Above-mentioned example is wherein a kind of judgment mode of explanation just, be not in order to limit the mode of embodiment, those skilled in the art work as can be otherwise, for example set the condition that different threshold values is used as comparison, or the consideration that is used as judging the noise suppression grade with the increment or the decrement of environmental noise amount, reach the variation of above-mentioned steps S110, dynamically determine the noise suppression pattern according to the environmental noise amount.
In addition, in one embodiment, the environmental noise level (ambient noise level) that the environmental noise amount is based on above-mentioned at least one voice signal in a very first time at interval mean value and get.For example the very first time is spaced apart 3 seconds, and when beginning to converse, above-mentioned steps is carried out in the definition of environmental noise amount according to this.Again in another embodiment, more can extend a last embodiment, behind certain hour, the environmental noise amount be changed into environmental noise level based at least one voice signal in the mean value in one second time interval.For example second time interval was 30 seconds.So, can according to the embodiment of Fig. 1 according to mat environmental noise amount dynamically to set the spirit of noise suppression pattern, implement method of the present invention by different way, to reach the intelligent noise suppression mode that has more.
Please refer to Fig. 2, is to illustrate with a practical example.For example in when beginning conversation once, to be an environmental noise level get in the mean value in per 3 seconds time interval the environmental noise amount, and at this moment, the user is in use mobile device such as mobile phone in the public domain.Because environmental noise is very noisy, and alters a great deal, within T1 was as 15 seconds, the noise suppression level setting five times, be returned to the 1st grade again after changing to maximum 3rd level by the 1st.After 15 seconds, the environmental noise amount is an environmental noise level in the mean value in per 30 seconds time interval and gets, at this moment, the user has entered in the quiet office, and continues conversation, and environmental noise is very low, so the time noise suppression grade be 0, just stopped noise suppression function.At T2 during as 2 minutes, the user continues conversation and has entered meeting room afterwards, owing to have the people to prepare bulletin equipment in the meeting room, at this moment, the noise suppression grade is 1.In Fig. 2, compared to the traditional approach (shown in dotted line) that adopts fixing noise suppression grade (as 3), we can significantly find, can dynamically adopt the appropriate setting noise suppression function of different noise suppression grades according to this embodiment of the present invention, and effectively reduce the consumption of power.
In addition, in other embodiments, also can before the conversation of an incoming call,, control the volume of incoming ring tone according to the environmental noise amount.As shown in Figure 3, before the method for execution graph 1, represent that as step S300 an incoming call is arranged at present, at this moment, execution in step S310 with the variation of response environment noise content, judges whether to adjust incoming ring tone.If not, then shown in step S330, need not adjust the volume of incoming ring tone; If, then shown in step S320, the volume of setting incoming call the tinkle of bells.For example, step S310 can embodiment be, if the environmental noise amount is greater than a threshold value, as 10dB, then increases by one times of the volume of incoming ring tone.So, can allow the user more can hear incoming ring tone.
As described above, all can be in any electronic installation that can receive audio frequency in order to embodiment method of the present invention.Please refer to Fig. 4 and illustrate system block diagrams according to one embodiment of the invention.Fig. 4 is the part of an electronic installation 400 as mobile operation device, mobile phone, network phone device or automobile hands-free device, and it is in order to the above-mentioned method of embodiment the present invention.This electronic installation 400 comprises that a processing unit 410 and signal processing module 420 and one are to a plurality of microphones 450, signal processing module 420 can receive the analog signal from microphone 450, and be converted at least one digital signal Sa or a plurality of digital signal through analog digital, processing unit 410 energy processing digital signal Sa, dynamically do the judgement of noise suppression with embodiment, and send a control signal C and set the noise suppression pattern with control signal processing module 420 according to method of the present invention.In this embodiment, processing unit 410 is carried out the function signal processing module 420 that has noise suppression according to the method for embodiments of the invention with control.
In another embodiment, signal processing module 520 as shown in Figure 5 comprises as the coding decoder (audio codec) of audio frequency: analog-digital converter (ADC:analog-to-digitalconverter) 521 is in order to connecting one or more microphones 450, and digital analog converter (DAC:digital-to-analog converter) 523 is in order to connect one or more loud speakers 460.In addition, signal processing module 520 also comprises digital signal processor 530, and it comprises noise reducing circuit 531, noise estimation circuit 533 and amplifier 535.The difference of the embodiment of Fig. 5 and the embodiment of Fig. 4 is, the method that this signal processing module 520 is carried out according to embodiments of the invention suppresses circuit 531 with controlling noise, one or more digital audio that noise estimation circuit 533 receives from analog-digital converter 521, estimate and present environmental noise amount, and the method for the embodiments of the invention of complying with, dynamically set the noise suppression pattern, promptly controlling noise suppresses circuit 531.It should be noted that, Fig. 5 just illustrates, be not in order to limit execution mode, signal processing module with noise suppression function, or digital signal processor all can be by programming to carry out various noise suppression method, by the embodiment of method of the present invention, according to the environmental noise amount, the dynamic noise suppression pattern of setting, digital signal processor all are used as implements embodiments of the invention.
In addition, when incoming call, the circuit of Fig. 5 also can be according to the method for another embodiment such as Fig. 3, and via the environmental noise amount of noise estimation circuit 533 gained, whether decision will set the volume of amplifier 535 with the control incoming ring tone.In addition, the signal processing module 420 among Fig. 4 also can connect 460 of or several loud speakers such as Fig. 5, via the method for processing unit 410 execution graphs 3 with the amplifier function in the control signal processing module 420 to adjust the volume of incoming ring tone.
The estimation of environmental noise amount can be calculated and get according to known method.For example, before the user still converses, the minimal volume of recording by a microphone can be handled or mean value to be considered as environmental noise.In addition, during conversation, the volume of minimum in a period of time, or its mean value also can be considered environmental noise.But, because in talk, use the practice of a microphone, can be subjected to the voice influence and interfere with the estimation of noise.
Another implements aspect for using at least two microphones to draw the environmental noise amount, does estimation more accurately.For example in a mobile phone,, arrange in pairs or groups one more additionally in order to microphone MIC2, as the usefulness of noise sensing as the sensing noise by a responsible microphone MIC1 who receives the voice of user's conversation.Since the relatively more close user's of microphone MIC1 mouth, and microphone MIC2 and microphone MIC2 have a segment distance, and in conversation, the phonological component that microphone MIC2 receives is less.Audio frequency by microphone MIC1 and MIC2 is made comparisons, and judges that less person is voice, so, voice can be done the calculating of filtration, thereby can obtain environmental noise from microphone MIC2.So analogize,, can better be estimated the result if can use more microphone as 4 or 7.
The improvement method and the device of the disclosed communication quality based on the environmental noise sensing of the above embodiment of the present invention, variation according to the environmental noise amount, dynamically set the noise suppression pattern, can set noise suppression function appositely, and reduce the consumption of power effectively.
In sum, though the present invention discloses as above with preferred embodiment, so it is not in order to limit the present invention.The persond having ordinary knowledge in the technical field of the present invention, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.Therefore, protection scope of the present invention is as the criterion when looking appended the claim scope person of defining.
Claims (16)
1. one kind based on the method for environmental noise sensing with the communication quality that improves an electronic installation, and this method comprises:
In a conversation, response is dynamically set a noise suppression pattern according to the variation of an environmental noise amount of at least one voice signal of this electronic installation reception, and this setting step comprises:
In this conversation, judge dynamically whether this environmental noise amount size needs to use noise suppression;
If this environmental noise amount representative needs to use noise suppression, then according to the size of this environmental noise amount, from a plurality of noise suppression grades, choose one, and according to this noise suppression grade that is selected, set this noise suppression pattern, wherein these a plurality of noise suppression grades comprise that at least two grades are to correspond to two noise suppression amounts that vary in size.
2. method according to claim 1, wherein this conversation is the conversation of an incoming call, this method also comprises: before this incoming call access failure, response is according to the variation of this environmental noise amount of this at least one voice signal of this electronic installation reception, the volume of setting incoming call the tinkle of bells.
3. method according to claim 2 is wherein if this environmental noise amount greater than a threshold value, then increases the volume of incoming ring tone.
4. method according to claim 1, wherein this conversation is the conversation that a conversation or of sending a telegram here is given orders or instructions.
5. method according to claim 1 wherein if the representative of the size of this environmental noise amount does not need to use noise suppression, is then set this noise suppression pattern to stop noise suppression.
6. method according to claim 1, wherein by judging whether this environmental noise amount falls into one first scope dynamically to judge whether to need to use noise suppression, this first scope contains a plurality of subranges, each subrange corresponds to one of these a plurality of noise suppression grades, is to fall within which subrange of this first scope to choose one from these a plurality of noise suppression grades by judging this environmental noise amount.
7. method according to claim 1, wherein this environmental noise amount is based on an environmental noise level of this at least one voice signal in very first time mean value at interval.
8. method according to claim 7, wherein in this conversation, this environmental noise amount is changed into this environmental noise level based on this at least one voice signal in the mean value in one second time interval.
9. method according to claim 1, wherein this at least one voice signal comprises a voice signal, this voice signal is that a microphone that is derived from this electronic installation produces.
10. method according to claim 1, wherein this at least one voice signal comprises a plurality of voice signals, these a plurality of voice signals are that a plurality of microphone that is derived from this electronic installation produces.
11. to improve the electronic installation of communication quality, this electronic installation comprises based on the environmental noise sensing for an energy:
At least one microphone, in order to sensing sound to produce at least one output signal;
One acoustic processing module couples this at least one microphone, in order to handle this at least one output signal so that produce at least one voice signal;
One processing module wherein in a conversation, in order to the variation of response according to an environmental noise amount of this at least one voice signal, is dynamically set a noise suppression pattern;
Wherein in this conversation, this processing module judges dynamically whether this environmental noise amount size needs to use noise suppression; If this environmental noise amount representative needs to use noise suppression, then this processing module is according to the size of this environmental noise amount, from a plurality of noise suppression grades, choose one, and according to this noise suppression grade that is selected, set this noise suppression pattern, wherein these a plurality of noise suppression grades comprise that at least two grades are to correspond to two noise suppression amounts that vary in size.
12. electronic installation according to claim 11, wherein this conversation is the conversation of an incoming call, and this processing module is before this incoming call access failure, and response is according to the variation of this environmental noise amount, the volume of setting incoming call the tinkle of bells.
13. electronic installation according to claim 11, wherein this at least one microphone comprises one first microphone and one second microphone, voice and this second microphone of this first microphone when receiving conversation have a segment distance from this first microphone, and this environmental noise amount is based on the output signal that is derived from this first microphone and this second microphone and pushes away.
14. to improve the electronic installation of communication quality, this electronic installation comprises based on the environmental noise sensing for an energy:
At least one microphone, in order to sensing sound to produce at least one output signal;
One acoustic processing module couples this at least one microphone, in order to handle this at least one output signal so that produce an environmental noise amount;
Wherein in a conversation, this acoustic processing module is dynamically set a noise suppression pattern in order to the variation of response according to this environmental noise amount;
Wherein in this conversation, this acoustic processing module judges dynamically whether this environmental noise amount size needs to use noise suppression; If this environmental noise amount representative needs to use noise suppression, then this acoustic processing module is according to the size of this environmental noise amount, from a plurality of noise suppression grades, choose one, and according to this noise suppression grade that is selected, set this noise suppression pattern, wherein these a plurality of noise suppression grades comprise that at least two grades are to correspond to two noise suppression amounts that vary in size.
15. electronic installation according to claim 14, wherein this conversation is the conversation of an incoming call, and this acoustic processing module is before this incoming call access failure, and response is according to the variation of this environmental noise amount, the volume of setting incoming call the tinkle of bells.
16. electronic installation according to claim 14, wherein this at least one microphone comprises one first microphone and one second microphone, voice and this second microphone of this first microphone when receiving conversation have a segment distance from this first microphone, and this environmental noise amount is based on the output signal that is derived from this first microphone and this second microphone and pushes away.
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