CN106409309A - Tone quality enhancement method and microphone - Google Patents
Tone quality enhancement method and microphone Download PDFInfo
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- CN106409309A CN106409309A CN201610921813.3A CN201610921813A CN106409309A CN 106409309 A CN106409309 A CN 106409309A CN 201610921813 A CN201610921813 A CN 201610921813A CN 106409309 A CN106409309 A CN 106409309A
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- voice signal
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Processing of the speech or voice signal 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
- G10L21/034—Automatic adjustment
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Processing of the speech or voice signal 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
- G10L21/0364—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude for improving intelligibility
Abstract
The embodiment of the invention provides a tone quality enhancement method and a microphone. The method comprises: voice state identification is carried out on obtained sound signals, thereby identifying sound signals in a voice state and sound signals in a non-voice state among the sound signals; comfort noise conversion is carried out on the sound signals in a non-voice state, thereby generating corresponding comfort noises; and different attenuation or excitation treatment is carried out on the sound signals in a voice state based on different frequency bands, thereby generating sound signals with tone quality enhancement; and automatic gain processing is carried out on the sound signals with tone quality enhancement. Therefore, when the sound signals are processed, the good-quality sound signals are obtained, thereby improving the user experience.
Description
Technical field
The present invention relates to field of audio processing, particularly to a kind of enhanced method of tonequality and microphone.
Background technology
In the prior art, it is related to the scene of audio frequency process, particularly under the scene of meeting, due to there are the external world
The presence of noise, and the process of voice itself is unreasonable, a lot of Conference Rooms due to space is big and personnel participating in the meeting more occur
Sound of speaking away from microphone is little, speak disconnected word or unsharp phenomenon, leads to the experience of user bad.
Content of the invention
For defect of the prior art, the present invention proposes a kind of enhanced method of tonequality and microphone, in order to ensure
The experience of user.
Specifically, the present invention proposes embodiment in detail below：
The embodiment of the present invention proposes a kind of enhanced method of tonequality, is applied to be internally embedded the ARM framework of Float Point Arithmetic Library
System, the method includes：
Voice status identification is carried out to the voice signal obtaining, is believed with the sound identifying the voice status in voice signal
Number and non-voice state under voice signal；
Voice signal under non-voice state is carried out with the conversion of comfort noise, generates corresponding comfort noise；
Voice signal under voice status is carried out carry out different decay or energized process according to the difference of frequency range, generate
The enhanced voice signal of tonequality；And enhanced voice signal carries out automatic gain process to tonequality.
In a specific embodiment, the described voice signal to acquisition carries out voice status identification, is spoken with identifying
Voice signal under the voice signal of the voice status in message number and non-voice state, specifically includes：
Energy measuring is carried out to the voice signal obtaining, to obtain the energy value of voice signal；
If the energy value that voice signal is kept in the range of certain time-delay is both greater than preset energy threshold value, determine described sound
Message number is the voice signal of voice status；
If the energy value that voice signal is kept in the range of certain time-delay is both less than preset energy threshold value, determine described sound
Message number is the voice signal of non-voice state.
In a specific embodiment, the method also includes：
To the voice signal determining that voice signal is voice status, determine the energy value being kept in the range of certain time-delay
Residing scope；
Based on different scopes, different attenuation processing are carried out to voice signal, to realize the voice signal of voice status
The gentle transition and voice signal of non-voice state between.
In a specific embodiment, the voice signal under voice status is carried out carry out difference according to the difference of frequency range
Decay or energized process, generate the enhanced voice signal of tonequality, specifically include：
Voice signal under voice status being carried out according to the different demarcation of frequency range is multiple different frequency range；
Frequency range for high frequency carries out attenuation processing, carries out energized process to the frequency range being in low frequency, to generate sound simultaneously
The enhanced voice signal of matter.
In a specific embodiment, to tonequality, enhanced voice signal carries out automatic gain process, specifically includes：
Obtain the information volume of the enhanced voice signal of tonequality；
Using average filter, the volume of enhanced for the tonequality exceeding default volume range voice signal is adjusted to pre-
If in volume range.
The embodiment of the present invention also proposed a kind of microphone, and what described microphone was internally embedded the ARM framework of Float Point Arithmetic Library is
System, this microphone includes：
Identification module, in order to carry out voice status identification to the voice signal obtaining, to identify the language in voice signal
Voice signal under the voice signal of sound-like state and non-voice state；
Modular converter, for the voice signal under non-voice state is carried out with the conversion of comfort noise, generates corresponding relaxing
Suitable noise；
First processing module, for carrying out to the voice signal under voice status carrying out different declining according to the difference of frequency range
Subtract or energized process, generate the enhanced voice signal of tonequality；
Second processing module, carries out automatic gain process for voice signal enhanced to tonequality.
In a specific embodiment, described identification module, specifically for：
Energy measuring is carried out to the voice signal obtaining, to obtain the energy value of voice signal；
If the energy value that voice signal is kept in the range of certain time-delay is both greater than preset energy threshold value, determine described sound
Message number is the voice signal of voice status；
If the energy value that voice signal is kept in the range of certain time-delay is both less than preset energy threshold value, determine described sound
Message number is the voice signal of non-voice state.
In a specific embodiment, this microphone also includes：
Transitional module, for the voice signal determining that voice signal is voice status, determining in the range of certain time-delay
The scope residing for energy value being kept；
Based on different scopes, different attenuation processing are carried out to voice signal, to realize the voice signal of voice status
The gentle transition and voice signal of non-voice state between.
In a specific embodiment, described first processing module, specifically for：
Voice signal under voice status being carried out according to the different demarcation of frequency range is multiple different frequency range；
Frequency range for high frequency carries out attenuation processing, carries out energized process to the frequency range being in low frequency, to generate sound simultaneously
The enhanced voice signal of matter.
In a specific embodiment, described Second processing module, specifically for：
Obtain the information volume of the enhanced voice signal of tonequality；
Using average filter, the volume of enhanced for the tonequality exceeding default volume range voice signal is adjusted to pre-
If in volume range.
Compared with prior art, the embodiment of the present invention proposes a kind of enhanced method of tonequality and microphone, the wherein party
Method includes：Voice status identification is carried out to the voice signal obtaining, is believed with the sound identifying the voice status in voice signal
Number and non-voice state under voice signal；Voice signal under non-voice state is carried out with the conversion of comfort noise, it is right to generate
The comfort noise answered；Voice signal under voice status is carried out carry out at different decay or excitation according to the difference of frequency range
Reason, generates the enhanced voice signal of tonequality；And enhanced voice signal carries out automatic gain process to tonequality.Passed through with this
Voice signal is processed, to get the voice signal of more high-quality, improves the experience of user.
Brief description
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below will be attached to use required in embodiment
Figure is briefly described it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, and it is right to be therefore not construed as
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
The schematic flow sheet of a kind of enhanced method of tonequality that Fig. 1 proposes for the embodiment of the present invention；
The schematic diagram of a kind of enhanced method of tonequality that Fig. 2 proposes for the embodiment of the present invention；
A kind of structural representation of microphone that Fig. 3 proposes for the embodiment of the present invention；
A kind of structural representation of microphone that Fig. 4 proposes for 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 is only a part of embodiment of the present invention, rather than whole embodiments.Generally
Can be arranged with various different configurations and design with the assembly of the embodiment of the present invention shown described in the accompanying drawing herein.Cause
This, be not intended to limit claimed invention to the detailed description of the embodiments of the invention providing in the accompanying drawings below
Scope, but it is merely representative of the selected embodiment of the present invention.Based on embodiments of the invention, those skilled in the art are not doing
The every other embodiment being obtained on the premise of going out creative work, broadly falls into the scope of protection of the invention.
Hereinafter, according to embodiment and accompanying drawing, the present invention is described in further detail：
The invention discloses a kind of enhanced method of tonequality, it is applied to be internally embedded the system of the ARM framework of Float Point Arithmetic Library, such as
Shown in Fig. 1, the method includes：
Step 101, the voice signal to acquisition carry out voice status identification, to identify the voice status in voice signal
Voice signal and non-voice state under voice signal；
Step 102, the voice signal under non-voice state is carried out with the conversion of comfort noise, generate corresponding comfortable make an uproar
Sound；
Step 103, the voice signal under voice status is carried out carry out different decay or excitation according to the difference of frequency range
Process, generate the enhanced voice signal of tonequality；
Step 104, to tonequality, enhanced voice signal carries out automatic gain process.
Due to needing using substantial amounts of floating-point operation to the process of audio frequency and when producing comfort noise.If using fixed point
Calculate, can take a long time, also expend more resource, precision relatively also can be poor, compare floating-point operation and also differ from one
A bit；The system that therefore present invention proposes specific process is the system of the ARM framework being internally embedded Float Point Arithmetic Library, can be carried with this
The efficiency of high disposal, the resource of consumption is relatively small, and precision is higher.
The execution of step 101 can be using VAD (Voice Activity Detection, voice activity detection, also known as language
Voice endpoint detection or speech endpoint detection) technology to be realizing；Specifically, the voice signal under the non-voice state identifying is
For noise.
Comfort noise in step 102 is the special noise of a class, is generated by algorithm, plays and makes one to loosen or cause police
The effect felt；Different from general noise, will not make one to produce irritated or injury is produced to the person.By under non-voice state
Voice signal namely general noise changed, be converted to comfort noise, to improve under concrete application scene, such as meeting
Voice quality.
And the execution of step 103 can be realized using bandpass filter, particularly FIR filter, namely Finite
Impulse Response wave filter, or have limit for length's unit impulse response wave filter, and non-recursive type wave filter is realizing.
With this, a kind of specific method flow schematic diagram can be as shown in Figure 2.
By with upper type, having taken into account voice transfer high speed and accuracy, reduce hardware cost；Improve microphone
Tonequality；Improve the pickup distance of microphone；The present invention adopt Novel comfortable noise generate improve conferencing environment so that
The personnel attending a meeting obtain comfortable sense of hearing.With this by processing to audio signal, get the voice signal of more high-quality, carry
The experience of high user.
Embodiment 1
The embodiment of the present invention 1 discloses a kind of enhanced method of tonequality, is applied to be internally embedded the ARM framework of Float Point Arithmetic Library
System, as shown in figure 1, the method includes：
Step 101, the voice signal to acquisition carry out voice status identification, to identify the voice status in voice signal
Voice signal and non-voice state under voice signal；
Step 102, the voice signal under non-voice state is carried out with the conversion of comfort noise, generate corresponding comfortable make an uproar
Sound；
Step 103, the voice signal under voice status is carried out carry out different decay or excitation according to the difference of frequency range
Process, generate the enhanced voice signal of tonequality；
Step 104, to tonequality, enhanced voice signal carries out automatic gain process.
In a specific embodiment, step 101, namely described to obtain voice signal carry out voice status knowledge
Not, to identify the voice signal under the voice signal and non-voice state of the voice status in voice signal, specifically include：
Energy measuring is carried out to the voice signal obtaining, to obtain the energy value of voice signal；
If the energy value that voice signal is kept in the range of certain time-delay is both greater than preset energy threshold value, determine described sound
Message number is the voice signal of voice status；
If the energy value that voice signal is kept in the range of certain time-delay is both less than preset energy threshold value, determine described sound
Message number is the voice signal of non-voice state.
Specifically, voice status identification is that VAD judges to realize, and VAD judges also known as speech terminals detection, voice border
Detection.Purpose is identification and voice status and non-voice state from voice signal stream.The embodiment of the present invention mainly employs letter
Number energy threshold differentiate.Basic thinking is when the energy of signal is less than a certain empirical thresholds and reaches certain time-delay, judges
This signal is noise；When the high a certain threshold value of the energy of signal and reach certain time-delay, judge this signal for voice, Ye Jiyu
The voice signal of sound-like state.
Intermediate zone in order to realize the voice signal of voice and non-voice state is steady, and the method can also include：
To the voice signal determining that voice signal is voice status, determine the energy value being kept in the range of certain time-delay
Residing scope；
Based on different scopes, different attenuation processing are carried out to voice signal, to realize the voice signal of voice status
The gentle transition and voice signal of non-voice state between.
Here to be illustrated with a specific embodiment, in this specific embodiment, is provided with many 3 threshold zone
Between (respectively three threshold values E1, E2, E3) and ideal capacity value, wherein, ideal capacity value be meeting when normal talking volume long
When sample mean energy.3 threshold values take 0.2-0.4,0.08-0.2 and 0.05-0.08 of standard energy value respectively.Namely E1>E2
>E3.
With this, 3db decay is done for the sound having only reached first threshold value E1；Reach second threshold value E2 sound to do
6db decays.
If reaching the sound of last threshold value E3, conversion process can be carried out, being substituted for comfort noise.
Additionally, above also need to do 100 milliseconds of delay judgement when often reaching a threshold value it is necessary in this 100ms
What energy was lasting just can carry out next step calculating less than threshold value.So that the transition of the voice signal of voice and non-voice state
Band steadily, is not in card word and the phenomenon falling word.
Step 102, namely noise is changed, in a specific embodiment, " linear congruential method " can be adopted,
Need when calling every time to input different " seed " values, different " noise " sequences are produced with this.
Additionally, embodiment also can carry out attenuation processing to the HFS of noise during the present invention.Specifically, can adopt
FIR filter makes a LPF and the noise of more than 5000Hz is filtered and attenuation processing, should in actual
In, can effectively reduce more than 6000Hz stimulates larger frequency range to human ear.Certainly, specifically, can also be as needed to it
His frequency range is processed, to meet different needs.
In a specific embodiment, step 103, namely the voice signal under voice status is carried out according to frequency range
Difference carries out different decay or energized process, generates the enhanced voice signal of tonequality, specifically includes：
Voice signal under voice status being carried out according to the different demarcation of frequency range is multiple different frequency range；
Frequency range for high frequency carries out attenuation processing, carries out energized process to the frequency range being in low frequency, to generate sound simultaneously
The enhanced voice signal of matter.
Here, specific embodiment is illustrating, in this embodiment it is contemplated that the spectrum distribution of voice musical sound
With 2500Hz as midpoint, therefore row energization is entered to the sound under this frequency spectrum, the enhancing of 3-6db specifically, can be carried out, produced
Effectiveness comparison naturally comfortable, to increase source of sound Prwsnt effect also obvious.
And to voice nasal sound spectrum distribution with 500Hz as midpoint, it is carried out with energized process, specifically, 3- can be carried out
The enhancing of 6db, can increase the stiffness sense of voice effectively.
As for the frequency spectrum in the range of voice 3500-6800Hz, energized process should not be used, because it easily makes source of sound produce
The unpleasant noisy sound of life, can suitably decay；For example, it is possible to do the decay of 6db.
Additionally, actual should in, the dental of voice typically should be avoided using energized process, because the mistake of this frequency range
Really it is easy to be therefore easily perceived by humans.Certainly if using arousal effect than milder digital driver it is also possible to do to dental
Slight energized process, for increasing the clear sense of dental.The frequency spectrum that it is processed should be in more than 7200Hz.
The present embodiment can adopt FIR filter (Finite Impulse Response wave filter：Limit for length's unit is had to rush
Sharp response filter, is also called non-recursive type wave filter) to design bandpass filter, 500Hz and 3400Hz section is strengthened
Excess bandwidth is 200Hz.The decay of 6db is done to the sound of 6800Hz section, excess bandwidth is 500Hz.Using FIR filter,
Structure is simple, has only used multiplication addition, and the time that calculates determines do not have the process of iteration, is well suited for computer and calculates, is also easy to
Be designed to the wave filter of particular phases.Only need to circulation multiply-add to and just can complete FIR filtering calculating.
In a specific embodiment, step 104 namely enhanced voice signal is carried out at automatic gain to tonequality
Reason, specifically includes：
Obtain the information volume of the enhanced voice signal of tonequality；
Using average filter, the volume of enhanced for the tonequality exceeding default volume range voice signal is adjusted to pre-
If in volume range.
Because signal is after a series of process such as noise reduction after filtering, the amplitude of signal occurs declining of certain amplitude
Subtract, simultaneously in order to obtain more stable loud comfortable auditory effect, need after voiced activity detection, according to testing result
Automatic gain control is carried out to voice signal.Its Mathematical Modeling is：
Wherein, Xi is current input signal, and M is the length of average filter.AGC_maxinum and AGC_minum is the phase
The volume range hoped.Can be adjusted near this scope by algorithm with this any volume having exceeded this scope.Automatic with this
Gain helps lower microphone can adjust the size of radio reception according to people with the distance between conference telephone distance, and people is from a little further
Speech, can amplify sound and pass to other side, people from close to speech, conference telephone can become a little bit smaller sound and pass to other side, and it is right to make
It is similar that side sounds sound size.Pickup distance of the present invention can reach 5 meters, is three times of market like product.
The embodiment of the present invention proposes a kind of enhanced method of tonequality and microphone, and wherein the method includes：To obtain
Voice signal carries out voice status identification, to identify under the voice signal and non-voice state of the voice status in voice signal
Voice signal；Voice signal under non-voice state is carried out with the conversion of comfort noise, generates corresponding comfort noise；To language
Voice signal under sound-like state carries out carrying out different decay or energized process according to the difference of frequency range, generates tonequality enhanced
Voice signal；And enhanced voice signal carries out automatic gain process to tonequality.With this by processing to voice signal,
To get the voice signal of more high-quality, improve the experience of user.
Embodiment 2
The embodiment of the present invention 2 also discloses a kind of microphone, and what described microphone was internally embedded the ARM framework of Float Point Arithmetic Library is
System, as shown in figure 3, this microphone includes：
Identification module 201, in order to carry out voice status identification to the voice signal obtaining, to identify in voice signal
Voice signal under the voice signal of voice status and non-voice state；
Modular converter 202, for the voice signal under non-voice state is carried out with the conversion of comfort noise, generates corresponding
Comfort noise；
First processing module 203, for carrying out to the voice signal under voice status carrying out difference according to the difference of frequency range
Decay or energized process, generate the enhanced voice signal of tonequality；
Second processing module 204, carries out automatic gain process for voice signal enhanced to tonequality.
In a specific embodiment, described identification module 201, specifically for：
Energy measuring is carried out to the voice signal obtaining, to obtain the energy value of voice signal；
If the energy value that voice signal is kept in the range of certain time-delay is both greater than preset energy threshold value, determine described sound
Message number is the voice signal of voice status；
If the energy value that voice signal is kept in the range of certain time-delay is both less than preset energy threshold value, determine described sound
Message number is the voice signal of non-voice state.
As shown in figure 4, this microphone also includes：
Transitional module 205, for the voice signal determining that voice signal is voice status, determining in certain time-delay scope
Scope residing for interior kept energy value；
Based on different scopes, different attenuation processing are carried out to voice signal, to realize the voice signal of voice status
The gentle transition and voice signal of non-voice state between.
In a specific embodiment, described first processing module 203, specifically for：
Voice signal under voice status being carried out according to the different demarcation of frequency range is multiple different frequency range；
Frequency range for high frequency carries out attenuation processing, carries out energized process to the frequency range being in low frequency, to generate sound simultaneously
The enhanced voice signal of matter.
In a specific embodiment, described Second processing module 204, specifically for：
Obtain the information volume of the enhanced voice signal of tonequality；
Using average filter, the volume of enhanced for the tonequality exceeding default volume range voice signal is adjusted to pre-
If in volume range.
The embodiment of the present invention proposes a kind of enhanced method of tonequality and microphone, and wherein the method includes：To obtain
Voice signal carries out voice status identification, to identify under the voice signal and non-voice state of the voice status in voice signal
Voice signal；Voice signal under non-voice state is carried out with the conversion of comfort noise, generates corresponding comfort noise；To language
Voice signal under sound-like state carries out carrying out different decay or energized process according to the difference of frequency range, generates tonequality enhanced
Voice signal；And enhanced voice signal carries out automatic gain process to tonequality.With this by processing to voice signal,
To get the voice signal of more high-quality, improve the experience of user.
It will be appreciated by those skilled in the art that accompanying drawing is a schematic diagram being preferable to carry out scene, the module in accompanying drawing or
Flow process is not necessarily implemented necessary to the present invention.
It will be appreciated by those skilled in the art that module in device in implement scene can according to implement scene describe into
Row is distributed in the device of implement scene it is also possible to carry out one or more dresses that respective change is disposed other than this implement scene
In putting.The module of above-mentioned implement scene can merge into a module it is also possible to be further split into multiple submodule.
The invention described above sequence number is for illustration only, does not represent the quality of implement scene.
Only the several of the present invention disclosed above are embodied as scene, but, the present invention is not limited to this, Ren Heben
What the technical staff in field can think change all should fall into protection scope of the present invention.
Claims (10)
1. a kind of enhanced method of tonequality is it is characterised in that be applied to be internally embedded the system of the ARM framework of Float Point Arithmetic Library, the party
Method includes：
To obtain voice signal carry out voice status identification, with identify the voice status in voice signal voice signal and
Voice signal under non-voice state；
Voice signal under non-voice state is carried out with the conversion of comfort noise, generates corresponding comfort noise；
Voice signal under voice status is carried out carry out according to the difference of frequency range with different decay or energized process, generates tonequality
Enhanced voice signal；And enhanced voice signal carries out automatic gain process to tonequality.
2. the method for claim 1 it is characterised in that described to obtain voice signal carry out voice status identification,
To identify the voice signal under the voice signal and non-voice state of the voice status in voice signal, specifically include：
Energy measuring is carried out to the voice signal obtaining, to obtain the energy value of voice signal；
If the energy value that voice signal is kept in the range of certain time-delay is both greater than preset energy threshold value, determine described sound letter
Number for voice status voice signal；
If the energy value that voice signal is kept in the range of certain time-delay is both less than preset energy threshold value, determine described sound letter
Number for non-voice state voice signal.
3. method as claimed in claim 2 is it is characterised in that the method also includes：
To the voice signal determining that voice signal is voice status, determine residing for the energy value being kept in the range of certain time-delay
Scope；
Based on different scopes, different attenuation processing are carried out to voice signal, with realize the voice signal of voice status with non-
Gentle transition between the voice signal of voice status.
4. the method for claim 1 is it is characterised in that carry out according to frequency range not to the voice signal under voice status
With carrying out different decay or energized process, generate the enhanced voice signal of tonequality, specifically include：
Voice signal under voice status being carried out according to the different demarcation of frequency range is multiple different frequency range；
Frequency range for high frequency carries out attenuation processing, carries out energized process to the frequency range being in low frequency simultaneously, to generate tonequality increasing
Voice signal after strong.
5. the method for claim 1 is it is characterised in that enhanced voice signal is carried out at automatic gain to tonequality
Reason, specifically includes：
Obtain the information volume of the enhanced voice signal of tonequality；
Using average filter, the volume of enhanced for the tonequality exceeding default volume range voice signal is adjusted to default sound
In the range of amount.
6. a kind of microphone is it is characterised in that described microphone is internally embedded the system of the ARM framework of Float Point Arithmetic Library, this microphone
Including：
Identification module, in order to carry out voice status identification to the voice signal obtaining, to identify the voice shape in voice signal
Voice signal under the voice signal of state and non-voice state；
Modular converter, for the voice signal under non-voice state is carried out with the conversion of comfort noise, generates corresponding comfortable make an uproar
Sound；
First processing module, for the voice signal under voice status is carried out carry out according to the difference of frequency range different decay or
Energized process, generates the enhanced voice signal of tonequality；
Second processing module, carries out automatic gain process for voice signal enhanced to tonequality.
7. microphone as claimed in claim 6 is it is characterised in that described identification module, specifically for：
Energy measuring is carried out to the voice signal obtaining, to obtain the energy value of voice signal；
If the energy value that voice signal is kept in the range of certain time-delay is both greater than preset energy threshold value, determine described sound letter
Number for voice status voice signal；
If the energy value that voice signal is kept in the range of certain time-delay is both less than preset energy threshold value, determine described sound letter
Number for non-voice state voice signal.
8. microphone as claimed in claim 7 is it is characterised in that also include：
Transitional module, for the voice signal determining that voice signal is voice status, determining and being protected in the range of certain time-delay
The scope residing for energy value held；
Based on different scopes, different attenuation processing are carried out to voice signal, with realize the voice signal of voice status with non-
Gentle transition between the voice signal of voice status.
9. microphone as claimed in claim 6 is it is characterised in that described first processing module, specifically for：
Voice signal under voice status being carried out according to the different demarcation of frequency range is multiple different frequency range；
Frequency range for high frequency carries out attenuation processing, carries out energized process to the frequency range being in low frequency simultaneously, to generate tonequality increasing
Voice signal after strong.
10. microphone as claimed in claim 6 is it is characterised in that described Second processing module, specifically for：
Obtain the information volume of the enhanced voice signal of tonequality；
Using average filter, the volume of enhanced for the tonequality exceeding default volume range voice signal is adjusted to default sound
In the range of amount.
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| CN107230483A (en) * | 2017-07-28 | 2017-10-03 | Tcl移动通信科技（宁波）有限公司 | Speech volume processing method, storage medium and mobile terminal based on mobile terminal |
| CN107316651A (en) * | 2017-07-04 | 2017-11-03 | 北京中瑞智科技有限公司 | Audio-frequency processing method and device based on microphone |
| CN109410971A (en) * | 2018-11-13 | 2019-03-01 | 无锡冰河计算机科技发展有限公司 | A kind of method and apparatus for beautifying sound |
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