CN106357871A - Voice amplifying method and mobile terminal - Google Patents
Voice amplifying method and mobile terminal Download PDFInfo
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- CN106357871A CN106357871A CN201610863778.4A CN201610863778A CN106357871A CN 106357871 A CN106357871 A CN 106357871A CN 201610863778 A CN201610863778 A CN 201610863778A CN 106357871 A CN106357871 A CN 106357871A
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
- H04M1/6008—Substation equipment, e.g. for use by subscribers including speech amplifiers in the transmitter circuit
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
- G10L21/0216—Noise filtering characterised by the method used for estimating noise
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0316—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude
- G10L21/0324—Details of processing therefor
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/19—Arrangements of transmitters, receivers, or complete sets to prevent eavesdropping, to attenuate local noise or to prevent undesired transmission; Mouthpieces or receivers specially adapted therefor
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
- H04M1/6016—Substation equipment, e.g. for use by subscribers including speech amplifiers in the receiver circuit
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
- G10L21/0216—Noise filtering characterised by the method used for estimating noise
- G10L2021/02161—Number of inputs available containing the signal or the noise to be suppressed
- G10L2021/02166—Microphone arrays; Beamforming
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- Engineering & Computer Science (AREA)
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- Computational Linguistics (AREA)
- Quality & Reliability (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
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- Telephone Function (AREA)
Abstract
The invention provides a voice amplifying method and a mobile terminal, and solves the problem of a non-ideal voice amplification effect caused by changing a holding posture, as the holding posture is changeless, of existing voice amplification equipment. The voice amplifying method provided by the invention comprises the following steps: acquiring audio signals received by a plurality of microphones of the mobile terminal; determining the microphone, closest to a voice source, in the plurality of microphones as a primary microphone according to audio information of the audio signals received by each microphone; performing amplification process on the audio signals received by the primary microphone; and outputting amplified audio signals through a loudspeaker. According to embodiments of the invention, when the holding posture of the voice amplification equipment changes, amplification process is performed on the audio signals received by the primary microphone closest to the voice source, so that noise interference is reduced, outputted audio signals are clearer, and user experience of a user is improved.
Description
Technical field
The present invention relates to sound processing techniques field, particularly relate to a kind of audio amplifying method and mobile terminal.
Background technology
At present, much in many people activity scene, the only voice with people is difficult to allow everyone all listen clearer, and it is right to need
Voice is enlarged processing, and e.g., guide is explained to visitor, and teacher attends class to classmates, and many people have a meeting together.
Prior art is typically amplified voice by public address equipments such as microphone or microphones, to allow everyone can
Catch, and make speaker especially painstaking.Existing public address equipment also receives voice simply by single mike, and
Voice is amplified process, voice is not processed and public address equipment grip is constant, lead to grip to change
When, the undesirable problem of amplifying effect.
Content of the invention
It is an object of the invention to provide a kind of audio amplifying method and mobile terminal grip appearance it is intended to solve existing public address equipment
Gesture is fixed, and conversion grip can lead to the undesirable problem of amplifying effect.
To achieve these goals, the invention provides a kind of audio amplifying method, it is applied to mobile terminal, comprising:
Obtain the audio signal that multiple mikes of mobile terminal receive；
The audio-frequency information of the audio signal being received according to each mike, determines apart from sound source in multiple described mikes
Nearest mike is main microphon；
The audio signal that described main microphon is received is amplified processing；
Audio signal after speaker exports processing and amplifying.
To achieve these goals, present invention also offers a kind of mobile terminal, comprising:
Acquisition module, the audio signal that the multiple mikes for obtaining mobile terminal receive；
Determining module, the audio-frequency information of the audio signal for being received according to each mike, in multiple described mikes
Middle determination is main microphon apart from the nearest mike of sound source；
Amplification module, the audio signal for receiving to described main microphon is amplified processing；
Output module, for exporting the audio signal after processing and amplifying by speaker.
The embodiment of the present invention has the advantages that
The technique scheme of the embodiment of the present invention, obtains the audio signal that multiple mikes of mobile terminal receive；Root
The audio-frequency information of the audio signal receiving according to each mike, determines apart from the nearest Mike of sound source in multiple described mikes
Wind is main microphon；The audio signal that described main microphon is received is amplified processing, and is exported at amplification by speaker
Audio signal after reason.The embodiment of the present invention when public address equipment grip changes, by the nearest main wheat of sound source of adjusting the distance
The audio signal that gram wind receives is amplified processing, and decreases the interference of noise, so that the audio signal of output is become apparent from, and improves
The experience of user.
Brief description
Fig. 1 is the first workflow diagram of the audio amplifying method of the embodiment of the present invention；
Fig. 2 is the particular flow sheet of step 102 in Fig. 1；
Fig. 3 is the first system Organization Chart of the audio amplifying method realizing the embodiment of the present invention；
Fig. 4 is the second system Organization Chart of the audio amplifying method realizing the embodiment of the present invention；
Fig. 5 is the second workflow diagram of the audio amplifying method of the embodiment of the present invention；
Fig. 6 is the particular flow sheet of step 503 in Fig. 5；
Fig. 7 is the 3rd workflow diagram of the audio amplifying method of the embodiment of the present invention；
Fig. 8 is a structured flowchart of the mobile terminal of the embodiment of the present invention；
Fig. 9 is the another structured flowchart of the mobile terminal of the embodiment of the present invention；
Figure 10 is another structured flowchart of the mobile terminal of the embodiment of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment a part of embodiment that is the present invention, rather than whole embodiments.Based on this
Embodiment in bright, the every other enforcement that those of ordinary skill in the art are obtained under the premise of not making creative work
Example, broadly falls into the scope of protection of the invention.
The present invention fixes for existing public address equipment grip, and conversion grip can lead to amplifying effect undesirable
Problem, the invention provides a kind of audio amplifying method and mobile terminal, when public address equipment grip changes, by sound of adjusting the distance
The audio signal that the nearest main microphon in source receives is amplified processing, and decreases the interference of noise, makes the audio signal of output
Become apparent from, improve the experience of user.
First embodiment
As shown in figure 1, The embodiment provides a kind of audio amplifying method, the executive agent of the method can be mobile
Terminal, the such as equipment such as smart mobile phone, panel computer/pad, personal computer, this audio amplifying method includes:
Step 111: obtain the audio signal that multiple mikes of mobile terminal receive.
Here, the pair of the ear microphone of mobile terminal, the main microphon of mobile terminal and mobile terminal can specifically be obtained
The audio signal that mike receives.
Step 112: the audio-frequency information of the audio signal being received according to each mike, multiple mikes determine distance
The nearest mike of sound source is main microphon.
Wherein, above-mentioned audio-frequency information mays include: amplitude, frequency or the phase place of audio signal.
Specifically, as shown in Fig. 2 above-mentioned steps 112 may include:
Step 1121: the amplitude information of the audio signal being received according to each mike of synchronization, determine each Mike
Wind and the first distance parameter of sound source.
Here, the amplitude of the audio signal that each mike of synchronization receives is bigger, shows this mike and sound source
Distance less, thus can according to each mike of synchronization receive audio signal amplitude information, can get mike with
The far and near ranking information of the first of sound source.
Step 1122: the frequency information of the audio signal being received according to each mike, determine each mike and sound source
Second distance parameter.
In a particular embodiment of the present invention, because the decay of the attenuation ratio low frequency part of sound HFS is fast, so
Audio signal high frequency signal accounting is higher, shows that distance is nearer.The audio signal medium-high frequency letter being received according to each mike
Number accounting can get the second far and near ranking information of mike and sound source.
Step 1123: the phase information of the audio signal being received according to each mike, determine the of mike and sound source
Three distance parameters.
Here, the phase information of the audio signal being received according to each mike, can get the sound that multiple mikes receive
Phase contrast between frequency signal, according to this phase contrast and then can get the time that the sound that sound source sends reaches multiple mikes
Difference, and then the 3rd distance ranking information of mike and sound source is can get according to this time difference.
Step 1124: the first weight of the first distance parameter according to each mike, the second power of second distance parameter
Weight and the 3rd weight parameter of the 3rd distance, are weighted to the first distance parameter, second distance parameter and the 3rd distance parameter
Summation, obtains the distance parameter of each mike and sound source, using the minimum mike of distance parameter as main microphon.
Specifically, according to the above-mentioned first far and near ranking information, the second far and near ranking information and the 3rd far and near ranking information and
Corresponding weight, draws mike and sound source total far and near ranking information, and according to total far and near ranking information, in multiple wheats
The nearest mike of sound determining distance sound source to be expanded in gram wind is main microphon.
Step 113: the audio signal that above-mentioned main microphon is received is amplified processing.
Here, the volume according to the audio signal after processing and the relation of default output volume, determine amplification coefficient, and
According to described amplification coefficient, the audio signal after processing is amplified processing.Specifically, when speaker's sound of speaking is smaller
When, amplification coefficient can be set to larger numerical value, when speaker's sound of speaking than larger when, amplification coefficient can be set to relatively
Little numerical value.
Step 114: the audio signal after speaker exports processing and amplifying.
In a particular embodiment of the present invention, as shown in figure 3, processing and amplifying can be play by the loudspeaker of mobile terminal itself
Audio signal afterwards；Or as shown in figure 4, the described audio signal transmission after processing and amplifying is broadcast to other mobile terminals
Put.
As shown in Figure 3 and Figure 4, obtain ear microphone, the audio signal of master/slave mike collection, selected by selector
Take the audio signal that main microphon receives, the audio signal that main microphon is received carries out echo cancellation, noise suppressed, voice increasing
Play after being amplified by amplification module afterwards by force.Directly played out by the loudspeaker of mobile terminal itself in figure 3, in Fig. 4
Middle mobile terminal can be set up with other mobile terminals by wired connection mode or radio connection and be connected, such as bluetooth connection,
By the audio signal transmission after amplifying to other mobile terminals, play the audio frequency letter after amplifying by the loudspeaker of other mobile terminals
Number.Sound amplification function can just be can achieve by separate unit mobile phone in the embodiment of the present invention, easy to carry, and voice can be carried out accordingly
Process, voice is clear, and effectiveness comparison is good.Certainly also sound amplification function can be realized together by multiple mobile phones in the embodiment of the present invention,
Make the farther of transfer voice, there is more preferable amplification effect.
The audio amplifying method of the embodiment of the present invention, obtains the audio signal that multiple mikes of mobile terminal receive；According to every
The audio-frequency information of the audio signal that individual mike receives, determines in multiple described mikes and apart from the nearest mike of sound source is
Main microphon；The audio signal that described main microphon is received is amplified processing, and after speaker exports processing and amplifying
Audio signal.The embodiment of the present invention when public address equipment grip changes, by the nearest main microphon of sound source of adjusting the distance
The audio signal receiving is amplified processing, and decreases the interference of noise, so that the audio signal of output is become apparent from, improve use
The experience at family.
Second embodiment
As shown in figure 5, the audio amplifying method of the embodiment of the present invention, the executive agent of the method can be mobile terminal, such as intelligence
The equipment such as energy mobile phone, panel computer/pad, personal computer, comprising:
Step 501: obtain the audio signal that multiple mikes of mobile terminal receive.
Here, the pair of the ear microphone of mobile terminal, the main microphon of mobile terminal and mobile terminal can specifically be obtained
The audio signal that mike receives.
Step 502: the audio-frequency information of the audio signal being received according to each mike, determine in multiple described mikes
It is main microphon apart from the nearest mike of sound source.
This step is identical with above-mentioned steps 112, and this repeats no more.
Step 503: the audio signal that main microphon is received carries out echo cancellation, noise suppressed and voice enhancement process,
Audio signal after being processed.
Preferably, the distance of main microphon and sound source can be obtained in this step first；If described distance is less than predetermined threshold value,
The audio signal then described main microphon being received carries out echo cancellation, noise suppressed and voice enhancement process, after being processed
Audio signal, otherwise to described main microphon receive audio signal carry out silence processing.
Automatic detection the mouth position of speaker be can identify in the embodiment of the present invention, and speaker's mouth position and wheat calculated
The distance between gram wind, filters out the sound of non-talking people, reduces according to the distance between speaker's mouth position and mike
Noise.
Wherein, as shown in fig. 6, above-mentioned steps 503 include:
Step 5031: according to the playback parameter that amplifies, the audio signal that main microphon is received carries out echo cancellation process, obtains
To the first audio signal.
Here the playback parameter that amplifies can be specially the audio signal of mobile terminal loudspeaker output for the previous period, will be previous
As reference signal, the audio signal that main microphon is received carries out echo cancellation to the audio signal of section time terminal horn output
Process.
Step 5032: when there is lasting simple signal in the first audio signal, described simple signal is suppressed
Process, obtain the second audio signal.
In the embodiment of the present invention, there is lasting simple signal in the first audio signal, this simple signal is disappeared
Remove, to reach the anti-purpose uttered long and high-pitched sounds.
Step 5033: voice detection process are carried out to above-mentioned second audio signal, obtains people's sound audio signals and non-voice
Audio signal.
Specifically, voice detection process are carried out to above-mentioned second audio signal, obtain Voiced signal, consonant signal and inhuman
Sound audio signals.
Step 5034: filter above-mentioned inhuman sound audio signals, and according in multiple described mikes remove described main microphon
Outside the audio signal that receives of other mikes, described second audio signal is carried out with environmental noise and makes an uproar Processing for removing in bottom,
Obtain the 3rd audio signal.
Carry out environmental noise and bottom make an uproar Processing for removing when, the audio frequency that can be received with other mikes outside main microphon
Signal and inhuman sound audio signals are reference signal, remove the second audio signal and connect with other mikes in the second audio signal
The shared signal of the audio signal received, to eliminate unnecessary noise.
Step 5035: voice enhancement process is carried out to above-mentioned 3rd audio signal, obtains the audio signal after above-mentioned process.
Here, voice is analyzed, compensates in de-noising, anti-utter long and high-pitched sounds process when, the frequency content of loss, carry out voice and add
Strength is managed.
Step 504: amplify the audio signal after described process.
This step is identical with above-mentioned steps 113, and here is omitted.
Step 505: the audio signal after speaker exports processing and amplifying.
This step is identical with above-mentioned steps 114, and here is omitted.
The audio amplifying method of the embodiment of the present invention, obtains the audio signal that multiple mikes of mobile terminal receive；According to every
The audio-frequency information of the audio signal that individual mike receives, determines wheat based on the nearest mike of sound source in multiple mikes
Gram wind；The audio signal that main microphon is received carries out echo cancellation, noise suppressed and voice enhancement process, after being processed
Audio signal；Amplify the audio signal after described process, and export the audio signal after processing and amplifying.The embodiment of the present invention is expanding
When sound equipment grip changes, it is amplified processing by the audio signal that the nearest main microphon of sound source of adjusting the distance receives,
Decrease the interference of noise, so that the audio signal of output is become apparent from, improve the experience of user.
3rd embodiment
As shown in fig. 7, the audio amplifying method of the embodiment of the present invention, comprising:
Step 701: obtain the audio signal that multiple mikes receive.
Step 702: the audio signal that multiple mikes are received is sampled, and the audio signal after sampling is changed
Become digital signal.
Step 703: the amplitude information of the audio signal being received according to each mike, frequency information and phase information, really
Make apart from the nearest main microphon of sound source.
Step 704: calculate the distance of main microphon and sound source.
Step 705: judge whether described distance is less than predetermined threshold value.
Step 706: if being more than or equal to predetermined threshold value, the audio signal that main microphon is received carries out silence processing.
Step 707: if being less than predetermined threshold value, according to the playback parameter that amplifies, the audio signal that main microphon is received is entered
Row echo cancellation is processed, and obtains the first audio signal.
Step 708: eliminate the simple signal in the first audio signal, obtain the second audio signal.
Step 709: voice detection process are carried out to the second audio signal, obtains Voiced signal, consonant signal and non-voice
Audio signal.
Step 710: silence processing is carried out to above-mentioned inhuman sound audio signals.
Step 711: the audio signal being received according to other mikes in addition to main microphon, the second audio signal is entered
Making an uproar Processing for removing in row environmental noise and bottom, obtains the 3rd audio signal.
Step 712: voice enhancement process is carried out to above-mentioned 3rd audio signal, the audio signal after being processed, and will
Audio signal after this process is as the playback parameter that amplifies in step 607.
When carrying out voice enhancement process, mainly enhancement process is carried out to the Voiced signal in people's sound audio signals.
Step 713: the audio signal after processing is amplified processing, and the audio frequency after processing and amplifying play by loudspeaker
Signal.
The audio amplifying method of the embodiment of the present invention, realizes loudspeaker function using mobile phone, by the processor of mobile phone
Sound can be carried out with echo cancellation, noise suppressed and voice reinforcement process, so that the sound ratio after expanding is more visible, carry significantly
The high experience of user.
Fourth embodiment
As shown in figure 8, embodiments of the invention additionally provide a kind of mobile terminal, comprising:
Acquisition module 81, the audio signal that the multiple mikes for obtaining mobile terminal receive；
Determining module 82, the audio-frequency information of the audio signal for being received according to each mike, in multiple described Mikes
Determine in wind that apart from the nearest mike of sound source be main microphon；
Amplification module 83, the audio signal for receiving to described main microphon is amplified processing.
Output module 84, for exporting the audio signal after processing and amplifying by speaker.
The mobile terminal of the embodiment of the present invention, described determining module 82 includes:
First determination sub-module 821, the amplitude information of the audio signal for being received according to each mike of synchronization,
Determine first distance parameter of each mike and sound source；
Second determination sub-module 822, the frequency information of the audio signal for being received according to each mike, determine each
Mike and the second distance parameter of sound source；
3rd determination sub-module 823, the phase information of the audio signal for being received according to each mike, determine each
Mike and the 3rd distance parameter of sound source；
4th determination sub-module 824, for the first weight of the first distance parameter according to each mike, second distance
Second weight of parameter and the 3rd weight of the 3rd distance, to described first distance parameter, second distance parameter and the 3rd distance
Parameter is weighted suing for peace, and obtains the distance parameter of each mike and sound source, using the minimum mike of distance parameter as master
Mike.
The mobile terminal of the embodiment of the present invention, described amplification module 83 includes:
Process submodule 831, the audio signal for receiving to described main microphon carries out echo cancellation, noise suppressed and
Voice enhancement process, the audio signal after being processed；
Amplify submodule 832, for amplifying the audio signal after described process.
The mobile terminal of the embodiment of the present invention, described process submodule 831 includes:
Acquiring unit 8311, for obtaining the distance of described main microphon and described sound source；
First processing units 8312, if being less than predetermined threshold value for described distance, the sound that described main microphon is received
Frequency signal carries out echo cancellation, noise suppressed and voice enhancement process, and the audio signal after being processed, otherwise to described main wheat
The audio signal that gram wind receives carries out silence processing.
The mobile terminal of the embodiment of the present invention, described process submodule 831 includes:
Second processing unit 8313, for according to the playback parameter that amplifies, the audio signal that described main microphon is received is entered
Row echo cancellation is processed, and obtains the first audio signal；
3rd processing unit 8314, for when there is lasting simple signal in described first audio signal, to described
Simple signal carries out suppression process, obtains the second audio signal；
Fourth processing unit 8315, for carrying out voice detection process to described second audio signal, obtains people's sound audio
Signal and inhuman sound audio signals；
5th processing unit 8316, for filtering described inhuman sound audio signals, and removes according in multiple described mikes
The audio signal that other mikes outside described main microphon receive, carries out environmental noise and bottom to described second audio signal
Make an uproar Processing for removing, obtain the 3rd audio signal；
6th processing unit 8317, for carrying out voice enhancement process to described 3rd audio signal, obtains described process
Audio signal afterwards.
The mobile terminal of the embodiment of the present invention, described amplification submodule 832 is used for the sound according to the audio signal after processing
Amount and the relation of default output volume, determine amplification coefficient, and amplify the audio frequency after described process according to described amplification coefficient
Signal.
It should be noted that this mobile terminal is terminal corresponding with said method embodiment, in said method embodiment
All implementations, all be applied to the embodiment of this mobile terminal, also can reach identical technique effect.
The mobile terminal of the embodiment of the present invention, obtains the audio signal that multiple mikes of mobile terminal receive；According to every
The audio-frequency information of the audio signal that individual mike receives, determines in multiple described mikes and apart from the nearest mike of sound source is
Main microphon；The audio signal that described main microphon is received is amplified processing, and after speaker exports processing and amplifying
Audio signal.The embodiment of the present invention when public address equipment grip changes, by the nearest main microphon of sound source of adjusting the distance
The audio signal receiving is amplified processing, and decreases the interference of noise, so that the audio signal of output is become apparent from, improve use
The experience at family.
5th embodiment
As shown in figure 9, being the another structured flowchart of embodiment of the present invention mobile terminal, the mobile terminal 900 shown in Fig. 9 wraps
Include: at least one processor 901, memorizer 902, at least one network interface 904 and other users interface 903.Mobile terminal
Each assembly in 900 is coupled by bus system 905.It is understood that bus system 805 be used for realizing these assemblies it
Between connection communication.Bus system 905, in addition to including data/address bus, also includes power bus, controlling bus and status signal
Bus.But for the sake of clear explanation, in fig .9 various buses are all designated as bus system 905.
Wherein, user interface 903 can include display, keyboard or pointing device (for example, mouse, trace ball
(trackball), touch-sensitive plate or touch screen etc..
It is appreciated that the memorizer 902 in the embodiment of the present invention can be volatile memory or nonvolatile memory,
Or may include volatibility and nonvolatile memory.Wherein, nonvolatile memory can be read only memory (read-
Only memory, rom), programmable read only memory (programmable rom, prom), the read-only storage of erasable programmable
Device (erasable prom, eprom), Electrically Erasable Read Only Memory (electrically eprom, eeprom) or
Flash memory.Volatile memory can be random access memory (random access memory, ram), and it is used as outside high
Speed caching.By exemplary but be not restricted explanation, the ram of many forms can use, such as static RAM
(static ram, sram), dynamic random access memory (dynamic ram, dram), Synchronous Dynamic Random Access Memory
(synchronous dram, sdram), double data speed synchronous dynamic RAM (double data rate
Sdram, ddrsdram), enhancement mode Synchronous Dynamic Random Access Memory (enhanced sdram, esdram), synchronized links
Dynamic random access memory (synchlink dram, sldram) and direct rambus random access memory (direct
Rambus ram, drram).The memorizer 902 of system and method described herein be intended to including but not limited to these and arbitrarily its
It is suitable for the memorizer of type.
In some embodiments, memorizer 902 stores following element, executable module or data structure, or
Their subset of person, or their superset: operating system 9021 and application program 9022.
Wherein, operating system 9021, comprise various system programs, such as ccf layer, core library layer, driving layer etc., are used for
Realize various basic businesses and process hardware based task.Application program 9022, comprises various application programs, such as media
Player (media player), browser (browser) etc., are used for realizing various applied business.Realize the embodiment of the present invention
The program of method may be embodied in application program 9022.
In one embodiment of this invention, by call memorizer 902 storage program or instruction, can be specifically
The program of storage or instruction in application program 9022, processor 901 is used for obtaining the sound that multiple mikes of mobile terminal receive
Frequency signal；The audio-frequency information of the audio signal being received according to each mike, determines apart from sound source in multiple described mikes
Nearest mike is main microphon；The audio signal that described main microphon is received is amplified processing；Defeated by speaker
Go out the audio signal after processing and amplifying.
Alternatively, processor 901 is additionally operable to: the amplitude letter of the audio signal being received according to each mike of synchronization
Breath, determines first distance parameter of each mike and sound source；The frequency information of the audio signal being received according to each mike,
Determine the second distance parameter of each mike and sound source；The phase information of the audio signal being received according to each mike, really
Each mike fixed and the 3rd distance parameter of sound source；First weight of the first distance parameter according to each mike, second
Second weight of distance parameter and the 3rd weight of the 3rd distance, to described first distance parameter, second distance parameter and the 3rd
Distance parameter is weighted suing for peace, and obtains the distance parameter of each mike and sound source, and the minimum mike of distance parameter is made
For main microphon.
Alternatively, processor 901 is additionally operable to: the audio signal that described main microphon is received carries out echo cancellation, noise
Suppression and voice enhancement process, the audio signal after being processed；Amplify the audio signal after described process.
Alternatively, processor 901 is additionally operable to: obtains the distance of described main microphon and described sound source；If described apart from little
In predetermined threshold value, then the audio signal described main microphon being received carries out echo cancellation, noise suppressed and voice enhancement process,
Audio signal after being processed, the audio signal otherwise described main microphon being received carries out silence processing.
Alternatively, processor 901 is additionally operable to: according to the playback parameter that amplifies, the audio signal that described main microphon is received
Carry out echo cancellation process, obtain the first audio signal；When there is lasting simple signal in described first audio signal, right
Described simple signal carries out suppression process, obtains the second audio signal；Voice detection process are carried out to described second audio signal,
Obtain people's sound audio signals and inhuman sound audio signals；Filter described inhuman sound audio signals, and according to multiple described mikes
In the audio signal that receives of other mikes in addition to described main microphon, environmental noise is carried out to described second audio signal
And bottom makes an uproar Processing for removing, obtain the 3rd audio signal；Voice enhancement process is carried out to described 3rd audio signal, obtains described place
Audio signal after reason.
Alternatively, processor 901 is additionally operable to: according to the volume of audio signal after processing and the pass of default output volume
System, determines amplification coefficient, and amplifies the audio signal after described process according to described amplification coefficient.
The mobile terminal 900 of the embodiment of the present invention, processor 901 is used for obtaining multiple mikes receptions of mobile terminal
Audio signal；The audio-frequency information of the audio signal being received according to each mike, determines apart from sound in multiple described mikes
The nearest mike in source is main microphon；The audio signal that described main microphon is received is amplified processing, and by raising one's voice
Device exports the audio signal after processing and amplifying.The embodiment of the present invention when public address equipment grip changes, by sound of adjusting the distance
The audio signal that the nearest main microphon in source receives is amplified processing, and decreases the interference of noise, makes the audio signal of output
Become apparent from, improve the experience of user.
The mobile terminal of the present invention is as being mobile phone, panel computer, personal digital assistant (personal digital
Assistant, pda) or vehicle-mounted computer etc. terminal.
Mobile terminal 900 is capable of each process that in previous embodiment, mobile terminal is realized, for avoiding repeating, here
Repeat no more.
The method that the embodiments of the present invention disclose all can apply in processor 901, or real by processor 901
Existing.Processor 901 is probably a kind of IC chip, has the disposal ability of signal.During realizing, said method
Each step can be completed by the instruction of the integrated logic circuit of the hardware in processor 901 or software form.Above-mentioned place
Reason device 901 can be general processor, digital signal processor (digital signal processor, dsp), special integrated
Circuit (application specific integrated circuit, asic), ready-made programmable gate array (field
Programmable gate array, fpga) or other PLDs, discrete gate or transistor logic,
Discrete hardware components.Can realize or execute disclosed each method in the embodiment of the present invention, step and logic diagram.General
Processor can be microprocessor or this processor can also be any conventional processor etc..In conjunction with embodiment of the present invention institute
The step of disclosed method can be embodied directly in hardware decoding processor execution and complete, or with the hardware in decoding processor
And software module combination execution completes.Software module may be located at random access memory, and flash memory, read only memory are programmable read-only
In the ripe storage medium in this area such as memorizer or electrically erasable programmable memory, depositor.This storage medium is located at
Memorizer 902, processor 901 reads the information in memorizer 902, the step completing said method in conjunction with its hardware.
It is understood that embodiments described herein can with hardware, software, firmware, middleware, microcode or its
Combine and to realize.Hardware is realized, processing unit can be implemented in one or more special IC (application
Specific integrated circuits, asic), digital signal processor (digital signal processing,
Dsp), digital signal processing appts (dsp device, dspd), programmable logic device (programmable logic
Device, pld), field programmable gate array (field-programmable gate array, fpga), general processor,
Controller, microcontroller, microprocessor, for executing in other electronic units or a combination thereof of herein described function.
Software is realized, can be realized herein by executing the module (such as process, function etc.) of function described herein
Described technology.Software code is storable in memorizer and passes through computing device.Memorizer can within a processor or
Realize outside processor.
Sixth embodiment
As shown in Figure 10, be the mobile terminal of the embodiment of the present invention another structured flowchart.Mobile terminal shown in Figure 10
1000 include radio frequency (radio frequency, rf) circuit 1010, memorizer 1020, input block 1030, display unit
1040th, processor 1060, voicefrequency circuit 1070, wifi (wireless fidelity) module 1080 and power supply 1090.
Wherein, input block 1030 can be used for numeral or the character information of receiving user's input, and produces whole with mobile
The user setup at end 1000 and the relevant signal input of function control.Specifically, in the embodiment of the present invention, this input block
1030 can include contact panel 1031.Contact panel 1031, also referred to as touch screen, can collect user thereon or neighbouring touch
Touch operation (such as user uses the operation on contact panel 1031 of any suitable object such as finger, stylus or adnexa), and
Corresponding attachment means are driven according to formula set in advance.Optionally, contact panel 1031 may include touch detecting apparatus and
Two parts of touch controller.Wherein, touch detecting apparatus detect the touch orientation of user, and detect the letter that touch operation brings
Number, transmit a signal to touch controller；Touch controller receives touch information from touch detecting apparatus, and is converted into
Contact coordinate, then give this processor 1060, and can the order sent of receiving processor 1060 being executed.Furthermore, it is possible to
Contact panel 1031 is realized using polytypes such as resistance-type, condenser type, infrared ray and surface acoustic waves.Except contact panel
1031, input block 1030 can also include other input equipments 1032, and other input equipments 1032 can include but is not limited to
One of physical keyboard, function key (such as volume control button, switch key etc.), trace ball, mouse, action bars etc. or many
Kind.
Wherein, display unit 1040 can be used for showing by the information of user input or the information and the movement that are supplied to user
The various menu interfaces of terminal 1000.Display unit 1040 may include display floater 1041, optionally, using lcd or can have
The forms such as machine light emitting diode (organic light-emitting diode, oled) are configuring display floater 1041.
It should be noted that contact panel 1031 can cover display floater 1041, form touch display screen, when this touch display screen
Detect thereon or after neighbouring touch operation, send processor 1060 to determine the type of touch event, with post processing
Device 1060 provides corresponding visual output according to the type of touch event in touch display screen.
Touch display screen includes Application Program Interface viewing area and conventional control viewing area.This Application Program Interface viewing area
And the arrangement mode of this conventional control viewing area does not limit, can for being arranged above and below, left-right situs etc. can distinguish two and show
Show the arrangement mode in area.This Application Program Interface viewing area is displayed for the interface of application program.Each interface is permissible
Comprise the interface elements such as icon and/or the widget desktop control of at least one application program.This Application Program Interface viewing area
It can also be the empty interface not comprising any content.This conventional control viewing area is used for showing the higher control of utilization rate, for example,
Application icons such as settings button, interface numbering, scroll bar, phone directory icon etc..
Wherein processor 1060 is the control centre of mobile terminal 1 000, using various interfaces and connection whole mobile phone
Various pieces, be stored in software program and/or module in first memory 1021 by running or executing, and call and deposit
Data in second memory 1022 for the storage, the various functions of execution mobile terminal 1 000 and processing data, thus to mobile whole
End 1000 carries out integral monitoring.Optionally, processor 1060 may include one or more processing units.
In one embodiment of this invention, by calling software program and/or the mould storing in this first memory 1021
Data in block and/or this second memory 1022, processor 1060 is used for obtaining multiple mikes receptions of mobile terminal
Audio signal；The audio-frequency information of the audio signal being received according to each mike, determines apart from sound in multiple described mikes
The nearest mike in source is main microphon；The audio signal that described main microphon is received is amplified processing；By speaker
Audio signal after output processing and amplifying.
Alternatively, processor 1060 is additionally operable to: the amplitude letter of the audio signal being received according to each mike of synchronization
Breath, determines first distance parameter of each mike and sound source；The frequency information of the audio signal being received according to each mike,
Determine the second distance parameter of each mike and sound source；The phase information of the audio signal being received according to each mike, really
Each mike fixed and the 3rd distance parameter of sound source；First weight of the first distance parameter according to each mike, second
Second weight of distance parameter and the 3rd weight of the 3rd distance, to described first distance parameter, second distance parameter and the 3rd
Distance parameter is weighted suing for peace, and obtains the distance parameter of each mike and sound source, and the minimum mike of distance parameter is made
For main microphon.
Alternatively, processor 1060 is additionally operable to: the audio signal that described main microphon is received carries out echo cancellation, noise
Suppression and voice enhancement process, the audio signal after being processed；Amplify the audio signal after described process.
Alternatively, processor 1060 is additionally operable to: obtains the distance of described main microphon and described sound source；If described apart from little
In predetermined threshold value, then the audio signal described main microphon being received carries out echo cancellation, noise suppressed and voice enhancement process,
Audio signal after being processed, the audio signal otherwise described main microphon being received carries out silence processing.
Alternatively, processor 1060 is additionally operable to: according to the playback parameter that amplifies, the audio signal that described main microphon is received
Carry out echo cancellation process, obtain the first audio signal；When there is lasting simple signal in described first audio signal, right
Described simple signal carries out suppression process, obtains the second audio signal；Voice detection process are carried out to described second audio signal,
Obtain people's sound audio signals and inhuman sound audio signals；Filter described inhuman sound audio signals, and according to multiple described mikes
In the audio signal that receives of other mikes in addition to described main microphon, environmental noise is carried out to described second audio signal
And bottom makes an uproar Processing for removing, obtain the 3rd audio signal；Voice enhancement process is carried out to described 3rd audio signal, obtains described place
Audio signal after reason.
Alternatively, processor 1060 is additionally operable to: the volume according to the audio signal after processing and default output volume
Relation, determines amplification coefficient, and amplifies the audio signal after described process according to described amplification coefficient.
Mobile terminal 1 000 provided in an embodiment of the present invention, processor 1060 is used for obtaining multiple mikes of mobile terminal
The audio signal receiving；The audio-frequency information of the audio signal being received according to each mike, determines in multiple described mikes
It is main microphon apart from the nearest mike of sound source；The audio signal that described main microphon is received is amplified processing, and leads to
Cross the audio signal after speaker exports processing and amplifying.The embodiment of the present invention when public address equipment grip changes, by right
The audio signal receiving apart from the nearest main microphon of sound source is amplified processing, and decreases the interference of noise, makes the sound of output
Frequency signal becomes apparent from, and improves the experience of user.
The mobile terminal of the present invention is as being mobile phone, panel computer, personal digital assistant (personal digital
Assistant, pda) or vehicle-mounted computer etc. terminal.
Mobile terminal 1 000 is capable of each process that in previous embodiment, terminal is realized, for avoiding repeating, here not
Repeat again.
Those of ordinary skill in the art are it is to be appreciated that combine the list of each example of the embodiments described herein description
Unit and algorithm steps, being capable of being implemented in combination in electronic hardware or computer software and electronic hardware.These functions are actually
To be executed with hardware or software mode, the application-specific depending on technical scheme and design constraint.Professional and technical personnel
Each specific application can be used different methods to realize described function, but this realization is it is not considered that exceed
The scope of the present invention.
Those skilled in the art can be understood that, for convenience and simplicity of description, the system of foregoing description,
Device and the specific work process of unit, may be referred to the corresponding process in preceding method embodiment, will not be described here.
It should be understood that disclosed apparatus and method in embodiment provided herein, can pass through other
Mode is realized.For example, device embodiment described above is only schematically, for example, the division of described unit, it is only
A kind of division of logic function, actual can have other dividing mode when realizing, for example multiple units or assembly can in conjunction with or
Person is desirably integrated into another system, or some features can be ignored, or does not execute.Another, shown or discussed is mutual
Between coupling or direct-coupling or communication connection can be by some interfaces, the INDIRECT COUPLING of device or unit or communication link
Connect, can be electrical, mechanical or other forms.
The described unit illustrating as separating component can be or may not be physically separate, show as unit
The part showing can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.The mesh to realize this embodiment scheme for some or all of unit therein can be selected according to the actual needs
's.
In addition, can be integrated in a processing unit in each functional unit in each embodiment of the present invention it is also possible to
It is that unit is individually physically present it is also possible to two or more units are integrated in a unit.
If described function realized using in the form of SFU software functional unit and as independent production marketing or use when, permissible
It is stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially in other words
Partly being embodied in the form of software product of part that prior art is contributed or this technical scheme, this meter
Calculation machine software product is stored in a storage medium, including some instructions with so that a computer equipment (can be individual
People's computer, server, or network equipment etc.) execution each embodiment methods described of the present invention all or part of step.
And aforesaid storage medium includes: u disk, portable hard drive, rom, ram, magnetic disc or CD etc. are various can be with store program codes
Medium.
One of ordinary skill in the art will appreciate that realizing all or part of flow process in above-described embodiment method, it is permissible
Related hardware is controlled to complete by computer program, described program can be stored in a computer read/write memory medium
In, this program is upon execution, it may include as the flow process of the embodiment of above-mentioned each method.Wherein, described storage medium can be magnetic
Dish, CD, read-only memory (read-only memory, rom) or random access memory (random access
Memory, ram) etc..
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement made etc., should be included within the scope of the present invention.
Claims (12)
1. a kind of audio amplifying method, is applied to mobile terminal it is characterised in that including:
Obtain the audio signal that multiple mikes of mobile terminal receive；
The audio-frequency information of the audio signal being received according to each mike, determines nearest apart from sound source in multiple described mikes
Mike be main microphon；
The audio signal that described main microphon is received is amplified processing；
Audio signal after speaker exports processing and amplifying.
2. audio amplifying method according to claim 1 it is characterised in that according to each mike receive audio signal sound
Frequency information, determines that in multiple described mikes the step being main microphon apart from the nearest mike of sound source includes:
The amplitude information of the audio signal being received according to each mike of synchronization, determines the first of each mike and sound source
Distance parameter；
The frequency information of the audio signal being received according to each mike, determines the second distance ginseng of each mike and sound source
Number；
The phase information of the audio signal being received according to each mike, determines the 3rd distance ginseng of each mike and sound source
Number；
First weight of the first distance parameter according to each mike, the second weight of second distance parameter and the 3rd distance
3rd weight, is weighted to described first distance parameter, second distance parameter and the 3rd distance parameter suing for peace, obtains each wheat
The distance parameter of gram wind and sound source, using the minimum mike of distance parameter as main microphon.
3. audio amplifying method according to claim 1 is it is characterised in that the audio signal that described main microphon is received is carried out
The step of processing and amplifying includes:
The audio signal that described main microphon is received carries out echo cancellation, noise suppressed and voice enhancement process, is processed
Audio signal afterwards；
Amplify the audio signal after described process.
4. audio amplifying method according to claim 3 is it is characterised in that the audio signal that described main microphon is received is carried out
Echo cancellation, noise suppressed and voice enhancement process, the step of the audio signal after being processed includes:
Obtain the distance of described main microphon and described sound source；
If described distance is less than predetermined threshold value, the audio signal that described main microphon is received carries out echo cancellation, and noise presses down
System and voice enhancement process, the audio signal after being processed, the audio signal otherwise described main microphon being received carries out quiet
Sound is processed.
5. audio amplifying method according to claim 3 is it is characterised in that the audio signal that described main microphon is received is carried out
Echo cancellation, noise suppressed and voice enhancement process, the step of the audio signal after being processed includes:
According to the playback parameter that amplifies, the audio signal that described main microphon is received carries out echo cancellation process, obtains the first sound
Frequency signal；
When there is lasting simple signal in described first audio signal, suppression process being carried out to described simple signal, obtains
Second audio signal；
Voice detection process are carried out to described second audio signal, obtains people's sound audio signals and inhuman sound audio signals；
Filter described inhuman sound audio signals, and according to other Mikes in addition to described main microphon in multiple described mikes
The audio signal that wind receives, carries out environmental noise to described second audio signal and makes an uproar Processing for removing in bottom, obtains the 3rd audio frequency letter
Number；
Voice enhancement process is carried out to described 3rd audio signal, obtains the audio signal after described process.
6. audio amplifying method according to claim 3 is it is characterised in that amplify the step bag of the audio signal after described process
Include:
Volume according to the audio signal after processing and the relation of default output volume, determine amplification coefficient, and according to described
Amplification coefficient amplifies the audio signal after described process.
7. a kind of mobile terminal is it is characterised in that include:
Acquisition module, the audio signal that the multiple mikes for obtaining mobile terminal receive；
Determining module, the audio-frequency information of the audio signal for being received according to each mike, in multiple described mikes really
The nearest mike of set a distance sound source is main microphon；
Amplification module, the audio signal for receiving to described main microphon is amplified processing；
Output module, for exporting the audio signal after processing and amplifying by speaker.
8. mobile terminal according to claim 7 is it is characterised in that described determining module includes:
First determination sub-module, the amplitude information of the audio signal for being received according to each mike of synchronization, determine every
Individual mike and the first distance parameter of sound source；
Second determination sub-module, the frequency information of the audio signal for being received according to each mike, determine each mike
Second distance parameter with sound source；
3rd determination sub-module, the phase information of the audio signal for being received according to each mike, determine each mike
The 3rd distance parameter with sound source；
4th determination sub-module, for the first weight of the first distance parameter according to each mike, second distance parameter
Second weight and the 3rd weight of the 3rd distance, enter to described first distance parameter, second distance parameter and the 3rd distance parameter
Row weighted sum, obtains the distance parameter of each mike and sound source, using the minimum mike of distance parameter as main microphon.
9. mobile terminal according to claim 7 is it is characterised in that described amplification module includes:
Process submodule, the audio signal for receiving to described main microphon carries out echo cancellation, noise suppressed and voice increase
Strength is managed, the audio signal after being processed；
Amplify submodule, for amplifying the audio signal after described process.
10. mobile terminal according to claim 9 is it is characterised in that described process submodule includes:
Acquiring unit, for obtaining the distance of described main microphon and described sound source；
First processing units, if being less than predetermined threshold value for described distance, the audio signal that described main microphon is received is entered
Row echo cancellation, noise suppressed and voice enhancement process, the audio signal after being processed, otherwise described main microphon is received
Audio signal carry out silence processing.
11. mobile terminals according to claim 9 are it is characterised in that described process submodule includes:
Second processing unit, for according to the playback parameter that amplifies, the audio signal that described main microphon is received carries out echo and disappears
Except processing, obtain the first audio signal；
3rd processing unit, for when there is lasting simple signal in described first audio signal, to described simple signal
Carry out suppression process, obtain the second audio signal；
Fourth processing unit, for carrying out voice detection process to described second audio signal, obtains people's sound audio signals and non-
People's sound audio signals；
5th processing unit, for filtering described inhuman sound audio signals, and according in multiple described mikes remove described main wheat
The audio signal that other mikes outside gram wind receive, carries out environmental noise to described second audio signal and bottom is made an uproar at elimination
Reason, obtains the 3rd audio signal；
6th processing unit, for carrying out voice enhancement process to described 3rd audio signal, obtains the audio frequency after described process
Signal.
12. mobile terminals according to claim 9 it is characterised in that described amplification submodule be used for according to process after
The volume of audio signal and the relation of default output volume, determine amplification coefficient, and according to described amplification coefficient amplifies
Audio signal after process.
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