CN109511044A - Mixed structure active noise reduction earphone, noise-reduction method and storage medium - Google Patents
Mixed structure active noise reduction earphone, noise-reduction method and storage medium Download PDFInfo
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- CN109511044A CN109511044A CN201910012835.1A CN201910012835A CN109511044A CN 109511044 A CN109511044 A CN 109511044A CN 201910012835 A CN201910012835 A CN 201910012835A CN 109511044 A CN109511044 A CN 109511044A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1083—Reduction of ambient noise
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/10—Details of earpieces, attachments therefor, earphones or monophonic headphones covered by H04R1/10 but not provided for in any of its subgroups
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Abstract
The invention discloses a kind of mixed structure active noise reduction earphone, noise-reduction method and storage mediums, mixed structure active noise reduction earphone includes: active noise control system, with reference to microphone and noise elimination microphone, is connect with active noise control system with reference to microphone and noise elimination microphone；It is used to acquire earphone outside noise with reference to microphone, and the outside noise of acquisition is sent to active noise control system；Active noise control system is for handling the outside noise with reference to microphone pick, output offset noise to the noise elimination microphone；Noise elimination microphone offsets actual noise for externally exporting the counteracting noise received.Novel mixed structure active noise reduction earphone proposed by the invention, using Robustness Design, noise signal is subjected to loop iteration processing by the system, most suitable noise reduction system coefficient can be selected, the variation for more rapidly and accurately tracking noise signal, to significantly promote noise reduction effect.
Description
Technical field
The present invention relates to technical field of mobile terminals more particularly to a kind of mixed structure active noise reduction earphones, noise-reduction method
And storage medium.
Background technique
There is sound noise in the environment such as daily life, work, noise pollution has become the whole world all ten
Divide the environmental problem of concern.In industrial processes, engine, pressure fan, fan, transformer, vacuum pump, air compressor etc.
Equipment generates the very high noise of decibel；In family life, the household appliances such as the wagon flow of road, air-conditioning also generate each class audio frequency and make an uproar
Sound；These noises seriously endanger the physiology and mental health of long-term close contact equipment personnel, bring Hearing, are easy to tired
Labor, decreased attention, production efficiency reduce.Studies have shown that when noise is 90 decibels, rod cell difference in people's retina
The sensibility of brightness is begun to decline, and identifies that the reaction time of dim light extends；When reaching 95 decibels, pupil can expand；Reach 115
When decibel, eyes can reduce by 207 to the adaptability of brightness.In addition, the people of Long Term Contact noise, most easily occurs asthenopia, eye
Bitterly, blurring of vision and phenomena such as shed tears.Relevant information shows that the elderly and patient are more sensitive to noise jamming.When sleep by
To after noise jamming, working efficiency, health can all be affected.Especially it has a significant impact to the physiology of human body, a large amount of thing
It tells the truth bright, many cardiopathic development and deterioration with noise have close contact.Noise pollution has become the big danger of the mankind
Evil.Noise pollution and water pollution, atmosphere pollution, noxious waste pollution, have been regarded as main environment in world wide and have asked
Topic.
In order to preferably eliminate noise, people gradually start using " active noise reduction " technology.Its principle is all sound
Sound is all made of certain frequency spectrum, if a kind of sound can be found, frequency spectrum and the noise to be eliminated are just the same, only
Phase is just opposite (180 ° of difference), so that it may be completely counterbalanced by this noise.Key is that how to obtain offsetting noise
Sound.The method actually used is set about from noise source itself, tries to turn the phase of former noise around by electronic circuit.
The main application of active noise reduction techniques at present is exactly earphone, but the robustness of noise cancelling headphone teaches poor, noise reduction system structure phase at present
To simple, the scene for coping with some noises mutation easily generates additional noise, and extreme influence, while shadow can be generated to noise reduction effect
Ring the level of comfort of wearer.
Summary of the invention
The present invention a kind of high-performance is provided and can be promoted the mixed structure active noise reduction earphone of noise reduction effect, noise-reduction method and
Storage medium.
To achieve the above object, the present invention provides a kind of mixed structure active noise reduction earphone, comprising: Active noise control system
System, with reference to microphone and noise elimination microphone, it is described with reference to microphone and noise elimination microphone with the Active noise control
System connection；Wherein:
It is described to refer to microphone, for acquiring earphone outside noise, and the outside noise of acquisition is sent to described active
Noise control system；
The active noise control system is exported for handling the outside noise with reference to microphone pick
Noise is offset to the noise elimination microphone；
The noise elimination microphone offsets actual noise for externally exporting the counteracting noise received.
Optionally, the mixed structure active noise reduction earphone further include: error microphone, the error microphone with it is described
Active noise control system connection；
The error microphone is transferred to the active noise control system for being acquired to extraneous residual noise；
The active noise control system is also used to the extraneous residual noise acquired according to the error microphone, adjusts
The noise reduction system coefficient of the active noise control system.
Optionally, the active noise control system includes: feedforward active noise control system, feedback Active noise control
System and processing module, in which:
The feedforward active noise control system, for receiving the outside noise with reference to microphone pick, to described
It is handled with reference to the outside noise of microphone pick, generates the weight coefficient of first group of noise control；
The feedback active noise control system, for obtaining the extraneous residual noise of the error microphone acquisition, with
And the counteracting noise of the output of noise elimination microphone described in last moment, estimation noise input signal is generated, the estimation noise is based on
The weight coefficient of second group of noise control is calculated in input signal；
The processing module, the power for weight coefficient and second group of noise control based on first group of noise control
Value coefficient, selection recombinate the biggish coefficient of influence of noise, obtain best initial weights vector, and final output letter is calculated with this
Number.
The present invention also proposes a kind of mixed structure active noise reduction earphone noise-reduction method, and the method is applied to mixed structure master
Dynamic noise cancelling headphone, the mixed structure active noise reduction earphone include: active noise control system, with reference to microphone and biography of eliminating the noise
Sound device, the described method comprises the following steps:
It is described to refer to microphone pick earphone outside noise, and the outside noise of acquisition is sent to the active noise control
System processed；
The active noise control system handles the outside noise with reference to microphone pick, and output offset is made an uproar
Sound is to the noise elimination microphone；
The noise elimination microphone externally exports the counteracting noise received, offsets to actual noise.
Optionally, the mixed structure active noise reduction earphone further include: error microphone, the method also includes:
The error microphone is acquired extraneous residual noise, is transferred to the active noise control system；
The extraneous residual noise that the active noise control system is acquired according to the error microphone is adjusted described active
The noise reduction system coefficient of noise control system.
Optionally, the extraneous residual noise that the active noise control system is acquired according to the error microphone is adjusted
The step of noise reduction system coefficient of the active noise control system includes:
By feedforward active noise control system according to the outside noise with reference to microphone pick, to described with reference to biography
The outside noise of sound device acquisition is handled, and the weight coefficient of first group of noise control is generated；
The extraneous residual noise and upper one of the error microphone acquisition is obtained by feedback active noise control system
The counteracting noise of the output of noise elimination microphone described in moment is generated estimation noise input signal, is believed based on the estimation noise inputs
The weight coefficient of second group of noise control number is calculated；
The weight coefficient of weight coefficient and second group of noise control based on first group of noise control is chosen to noise
The coefficient being affected is recombinated, and best initial weights vector is obtained, and final output signal is calculated with this；
It repeats the above steps and carries out loop iteration processing.
The present invention also proposes a kind of mixed structure active noise reduction earphone, comprising: memory, processor and is stored in described
Computer program on memory realizes following operation when the computer program is run by the processor:
Active noise control system is sent to by reference to microphone pick earphone outside noise, and by the outside noise of acquisition
System；
The outside noise with reference to microphone pick is handled by the active noise control system, output is supported
Eliminated noise is to microphone of eliminating the noise；
The counteracting noise received is externally exported by the noise elimination microphone, actual noise is offset.
Optionally, following operation is also realized when the computer program is run by the processor:
Extraneous residual noise is acquired by error microphone, is transferred to the active noise control system；
The extraneous residual noise acquired by the active noise control system according to the error microphone, described in adjusting
The noise reduction system coefficient of active noise control system.
Optionally, following operation is also realized when the computer program is run by the processor:
By feedforward active noise control system according to the outside noise with reference to microphone pick, to described with reference to biography
The outside noise of sound device acquisition is handled, and the weight coefficient of first group of noise control is generated；
The extraneous residual noise and upper one of the error microphone acquisition is obtained by feedback active noise control system
The counteracting noise of the output of noise elimination microphone described in moment is generated estimation noise input signal, is believed based on the estimation noise inputs
The weight coefficient of second group of noise control number is calculated；
The weight coefficient of weight coefficient and second group of noise control based on first group of noise control is chosen to noise
The coefficient being affected is recombinated, and best initial weights vector is obtained, and final output signal is calculated with this；
It repeats the above steps and carries out loop iteration processing.
The present invention also proposes a kind of computer readable storage medium, and calculating is stored on the computer readable storage medium
The step of machine program, the computer program realizes method as described above when being run by processor.
Compared with prior art, a kind of mixed structure active noise reduction earphone, noise-reduction method and storage medium proposed by the present invention,
Active noise control system is sent to by reference to microphone pick earphone outside noise, and by the outside noise of acquisition；It is active
Noise control system handles the outside noise with reference to microphone pick, and output offset noise is transaudient to the noise elimination
Device；Noise elimination microphone externally exports the counteracting noise received, offsets to actual noise.Further, it is also possible to logical
It crosses error microphone to be acquired extraneous residual noise, is transferred to the active noise control system；Active noise control system
The extraneous residual noise that system is acquired according to error microphone, adjusts the noise reduction system coefficient of active noise control system.
The present invention makes full use of a kind of Technique of Active Noise Control of new mixed structure, can be realized good active make an uproar
Acoustic control effect, while earphone can also effectively cope with different noise scenarios, realize noise intensity identification and classification, use
Each scene characteristic amount of storage carries out intelligent decision, most suitable noise reduction system coefficient is selected, finally by novel mixing
Structure, which generates, offsets sound wave, realizes good noise reduction effect.Novel mixed structure active noise reduction earphone proposed by the invention, is adopted
With Robustness Design, noise signal is subjected to loop iteration processing by the system, most suitable noise reduction system can be selected
Coefficient more rapidly and accurately tracks the variation of noise signal, to significantly promote noise reduction effect.
Detailed description of the invention
Fig. 1 is the electrical block diagram of mixed structure active noise reduction earphone proposed by the present invention；
Fig. 2 is the electrical block diagram of active noise control system of the present invention；
Fig. 3 is the flow diagram of mixed structure active noise reduction earphone noise-reduction method first embodiment of the present invention；
Fig. 4 is the flow diagram of mixed structure active noise reduction earphone noise-reduction method second embodiment of the present invention.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
Due to existing active noise reduction earphone, be not suitable for some non-linear, non-stationary temporal noise sequence processing, robust
Property it is poor, since the noise in daily life changes greatly, need the real-time of system stronger, and conventional noise reduction system structure phase
To simple, do not have enough abilities and go to cope with the scene of some noises mutation, cannot accurately identify scene, select most suitable
Suitable noise reduction mode, and some burst noises such as additional noise is easily generated, for example easily occurs making an uproar in wink, noise reduction effect can be generated
Extreme influence, while influencing the level of comfort of wearer.
The present invention proposes a kind of high-performance and can promote the mixed structure active noise reduction earphone of noise reduction effect.
Specifically, Fig. 1 is please referred to, Fig. 1 is the circuit structure signal of mixed structure active noise reduction earphone proposed by the present invention
Figure.
As shown in Figure 1, first embodiment of the invention proposes a kind of mixed structure active noise reduction earphone, comprising: active noise
Control system (ANC), with reference to microphone and noise elimination microphone, it is described to have with described with reference to microphone and noise elimination microphone
The connection of source noise control system；Wherein:
It is described to refer to microphone, for acquiring earphone outside noise, and the outside noise of acquisition is sent to described active
Noise control system；
The active noise control system is exported for handling the outside noise with reference to microphone pick
Noise is offset to the noise elimination microphone；
The noise elimination microphone offsets actual noise for externally exporting the counteracting noise received.
Further, the mixed structure active noise reduction earphone further include: error microphone, the error microphone and institute
State active noise control system connection；
The error microphone is transferred to the active noise control system for being acquired to extraneous residual noise；
The active noise control system is also used to the extraneous residual noise acquired according to the error microphone, adjusts
The noise reduction system coefficient of the active noise control system.
Referring to shown in Fig. 2, Fig. 2 is the electrical block diagram of active noise control system of the present invention.
As shown in Fig. 2, the active noise control system includes: feedforward active noise control system, feedback active noise
Control system and processing module, in which:
The feedforward active noise control system, for receiving the outside noise with reference to microphone pick, to described
It is handled with reference to the outside noise of microphone pick, generates the weight coefficient of first group of noise control；
The feedback active noise control system, for obtaining the extraneous residual noise of the error microphone acquisition, with
And the counteracting noise of the output of noise elimination microphone described in last moment, estimation noise input signal is generated, the estimation noise is based on
The weight coefficient of second group of noise control is calculated in input signal；
The processing module, the power for weight coefficient and second group of noise control based on first group of noise control
Value coefficient, selection recombinate the biggish coefficient of influence of noise, obtain best initial weights vector, and final output letter is calculated with this
Number.
The principle of noise reduction, which is described in detail, to be realized to the present invention program below:
It is used to acquire outside noise with reference to microphone in Fig. 1, being then transferred to ANC (active noise control) has
Source noise control system, is handled by ANC, the counteracting noise y (n) of output is generated, then spread out of by noise elimination microphone, to reality
Noise is offset, and is acquired finally by error microphone to extraneous residual noise, is transferred to ANC system, passes through reality
The noise reduction system coefficient of the noise reduction effect feedback regulation ANC on border.
Fig. 2 is the mixed structure system in ANC, and entire mixed structure is by feedforward active noise control system and feeds back active
Noise control system collectively constitutes, and noise signal x (n) carries out taking acquisition by reference to microphone, is transferred to the top Fig. 2 first
Feedforward active noise control system handled, and the weight coefficient that can generate one group of noise control is (first group i.e. above-mentioned
The weight coefficient of noise control)；The feedback active noise control system of lower part is believed using the error that error microphone is got simultaneously
Number and last moment output signal y (n), generate estimation noise inputs z (n), another group of weight coefficient is obtained by calculation
(weight coefficient of i.e. above-mentioned second group of noise control), then system is to feedforward active noise control system and feedback active noise
Certain calculating of two groups of weight coefficients of control system, selection recombinate the biggish coefficient of influence of noise, obtain best initial weights
Vector, for calculating final output signal.
Main key point is mixed noise control structure and noise front-end recognition detection system, is coordinated by the two
Cooperation can make earphone generate better noise reduction effect.
Novel mixed structure proposed by the present invention is recycled noise signal by the system using Robustness Design
Iterative processing, the mixed structure are a kind of high performance adaptive signal processing structures, be very suitable to it is non-linear, when non-stationary
Between sequence processing, substantially the tranquilization of reason noise signal time series is handled, while earphone can also effectively cope with
Different noise scenarios realize noise intensity identification and classification, carry out intelligent decision, choosing with each scene characteristic amount of storage
Most suitable coefficient of combination is selected out, compared to the denoising structure in other noise cancelling headphones, compared to the drop in other noise cancelling headphones
It makes an uproar structure, the novel mixed structure of proposition can select most suitable coefficient of combination, more rapidly and accurately track noise letter
Number variation, to significantly promote noise reduction effect.
In addition, there are one intelligent noise detection systems by the present invention, the system is in the front end of hybrid system, by pickup
Noise carry out processing detection, carry out matching operation with some model of place of storage, extract the spy for being best suitable for current scene
Parameter is levied, hybrid system is then transferred to, the noise processed of special scenes can be more targetedly directed to, generate preferably drop
It makes an uproar effect.
Compared with prior art, the present invention makes full use of a kind of Technique of Active Noise Control method of new mixed structure, energy
It enough realizes good Active noise control effect, while earphone can also effectively cope with different noise scenarios, realizes noise
Intensity identification and classification carry out intelligent decision with each scene characteristic amount of storage, select most suitable coefficient of combination, most
It is generated afterwards by novel mixed structure and offsets sound wave, realize good noise reduction effect.Novel mixed structure proposed by the invention,
Using Robustness Design, noise signal is subjected to loop iteration processing by the system, can more rapidly and accurately track and make an uproar
The variation of acoustical signal, to significantly promote noise reduction effect.
As shown in figure 3, the embodiment of the present invention proposes a kind of mixed structure active noise reduction earphone noise-reduction method, the method is answered
For mixed structure active noise reduction earphone, the mixed structure active noise reduction earphone includes: active noise control system, with reference to biography
Sound device and noise elimination microphone, the described method comprises the following steps:
S1, it is described to refer to microphone pick earphone outside noise, and the outside noise of acquisition is sent to described active make an uproar
Acoustic control system；
S2, the active noise control system handle the outside noise with reference to microphone pick, and output is supported
Eliminated noise is to the noise elimination microphone；
The counteracting noise received is externally exported, is offset to actual noise by S3, the noise elimination microphone.
Further, referring to shown in Fig. 4, the mixed structure active noise reduction earphone further include: error microphone, the side
Method further include:
S4, the error microphone are acquired extraneous residual noise, are transferred to the active noise control system；
S5, the extraneous residual noise that the active noise control system is acquired according to the error microphone, described in adjusting
The noise reduction system coefficient of active noise control system.
Wherein, the extraneous residual noise that the active noise control system is acquired according to the error microphone adjusts institute
The step of stating the noise reduction system coefficient of active noise control system include:
By feedforward active noise control system according to the outside noise with reference to microphone pick, to described with reference to biography
The outside noise of sound device acquisition is handled, and the weight coefficient of first group of noise control is generated；
The extraneous residual noise and upper one of the error microphone acquisition is obtained by feedback active noise control system
The counteracting noise of the output of noise elimination microphone described in moment is generated estimation noise input signal, is believed based on the estimation noise inputs
The weight coefficient of second group of noise control number is calculated；
The weight coefficient of weight coefficient and second group of noise control based on first group of noise control is chosen to noise
The coefficient being affected is recombinated, and best initial weights vector is obtained, and final output signal is calculated with this；
It repeats the above steps and carries out loop iteration processing.
Compared with prior art, the present invention makes full use of a kind of Technique of Active Noise Control method of new mixed structure, energy
It enough realizes good Active noise control effect, while earphone can also effectively cope with different noise scenarios, realizes noise
Intensity identification and classification carry out intelligent decision with each scene characteristic amount of storage, select most suitable coefficient of combination, most
It is generated afterwards by novel mixed structure and offsets sound wave, realize good noise reduction effect.Novel mixed structure proposed by the invention,
Using Robustness Design, noise signal is subjected to loop iteration processing by the system, can more rapidly and accurately track and make an uproar
The variation of acoustical signal, to significantly promote noise reduction effect.
In addition, the present invention also proposes a kind of mixed structure active noise reduction earphone, comprising: memory, processor and storage
Computer program on the memory realizes following operation when the computer program is run by the processor:
Active noise control system is sent to by reference to microphone pick earphone outside noise, and by the outside noise of acquisition
System；
The outside noise with reference to microphone pick is handled by the active noise control system, output is supported
Eliminated noise is to microphone of eliminating the noise；
The counteracting noise received is externally exported by the noise elimination microphone, actual noise is offset.
Further, following operation is also realized when the computer program is run by the processor:
Extraneous residual noise is acquired by error microphone, is transferred to the active noise control system；
The extraneous residual noise acquired by the active noise control system according to the error microphone, described in adjusting
The noise reduction system coefficient of active noise control system.
Further, following operation is also realized when the computer program is run by the processor:
By feedforward active noise control system according to the outside noise with reference to microphone pick, to described with reference to biography
The outside noise of sound device acquisition is handled, and the weight coefficient of first group of noise control is generated；
The extraneous residual noise and upper one of the error microphone acquisition is obtained by feedback active noise control system
The counteracting noise of the output of noise elimination microphone described in moment is generated estimation noise input signal, is believed based on the estimation noise inputs
The weight coefficient of second group of noise control number is calculated；
The weight coefficient of weight coefficient and second group of noise control based on first group of noise control is chosen to noise
The coefficient being affected is recombinated, and best initial weights vector is obtained, and final output signal is calculated with this；
It repeats the above steps and carries out loop iteration processing.
The present invention also proposes a kind of computer readable storage medium, and calculating is stored on the computer readable storage medium
The step of machine program, the computer program realizes method as described above when being run by processor.
Compared with prior art, the present invention has the following advantages:
The present invention makes full use of a kind of Technique of Active Noise Control of new mixed structure, can be realized good active make an uproar
Acoustic control effect, while earphone can also effectively cope with different noise scenarios, realize noise intensity identification and classification, use
Each scene characteristic amount of storage carries out intelligent decision, most suitable noise reduction system coefficient is selected, finally by novel mixing
Structure, which generates, offsets sound wave, realizes good noise reduction effect.Novel mixed structure active noise reduction earphone proposed by the invention, is adopted
With Robustness Design, noise signal is subjected to loop iteration processing by the system, most suitable noise reduction system can be selected
Coefficient more rapidly and accurately tracks the variation of noise signal, to significantly promote noise reduction effect.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all utilizations
Equivalent structure made by description of the invention and accompanying drawing content or process transformation, are applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of mixed structure active noise reduction earphone characterized by comprising active noise control system, with reference to microphone with
And noise elimination microphone, it is described to be connect with the active noise control system with reference to microphone and noise elimination microphone；Wherein:
It is described to refer to microphone, for acquiring earphone outside noise, and the outside noise of acquisition is sent to the active noise
Control system；
The active noise control system, for handling the outside noise with reference to microphone pick, output offset
Noise is to the noise elimination microphone；
The noise elimination microphone offsets actual noise for externally exporting the counteracting noise received.
2. mixed structure active noise reduction earphone according to claim 1, which is characterized in that the mixed structure active noise reduction
Earphone further include: error microphone, the error microphone are connect with the active noise control system；
The error microphone is transferred to the active noise control system for being acquired to extraneous residual noise；
The active noise control system is also used to the extraneous residual noise acquired according to the error microphone, described in adjusting
The noise reduction system coefficient of active noise control system.
3. mixed structure active noise reduction earphone according to claim 2, which is characterized in that the active noise control system
It include: feedforward active noise control system, feedback active noise control system and processing module, in which:
The feedforward active noise control system, for receiving the outside noise with reference to microphone pick, to the reference
The outside noise of microphone pick is handled, and the weight coefficient of first group of noise control is generated；
The feedback active noise control system, for obtaining the extraneous residual noise of the error microphone acquisition, Yi Jishang
The counteracting noise of the output of noise elimination microphone described in one moment generates estimation noise input signal, is based on the estimation noise inputs
The weight coefficient of second group of noise control is calculated in signal；
The processing module, the weight system for weight coefficient and second group of noise control based on first group of noise control
Number, selection are recombinated the biggish coefficient of influence of noise, obtain best initial weights vector, final output signal is calculated with this.
4. a kind of mixed structure active noise reduction earphone noise-reduction method, which is characterized in that the method is applied to mixed structure actively
Noise cancelling headphone, the mixed structure active noise reduction earphone include: active noise control system, with reference to microphone and eliminate the noise it is transaudient
Device the described method comprises the following steps:
It is described to refer to microphone pick earphone outside noise, and the outside noise of acquisition is sent to the Active noise control system
System；
The active noise control system handles the outside noise with reference to microphone pick, and output offset noise is extremely
The noise elimination microphone；
The noise elimination microphone externally exports the counteracting noise received, offsets to actual noise.
5. mixed structure active noise reduction earphone noise-reduction method according to claim 4, which is characterized in that the mixed structure
Active noise reduction earphone further include: error microphone, the method also includes:
The error microphone is acquired extraneous residual noise, is transferred to the active noise control system；
The extraneous residual noise that the active noise control system is acquired according to the error microphone, adjusts the active noise
The noise reduction system coefficient of control system.
6. mixed structure active noise reduction earphone noise-reduction method according to claim 5, which is characterized in that the active noise
The extraneous residual noise that control system is acquired according to the error microphone adjusts the noise reduction system of the active noise control system
Unite coefficient the step of include:
By feedforward active noise control system according to the outside noise with reference to microphone pick, microphone is referred to described
The outside noise of acquisition is handled, and the weight coefficient of first group of noise control is generated；
Extraneous residual noise and the last moment of the error microphone acquisition are obtained by feedback active noise control system
The counteracting noise of the noise elimination microphone output, generates estimation noise input signal, based on the estimation noise input signal
Calculation obtains the weight coefficient of second group of noise control；
The weight coefficient of weight coefficient and second group of noise control based on first group of noise control is chosen to influence of noise
Biggish coefficient is recombinated, and best initial weights vector is obtained, and final output signal is calculated with this；
It repeats the above steps and carries out loop iteration processing.
7. a kind of mixed structure active noise reduction earphone characterized by comprising memory, processor and be stored in described deposit
Computer program on reservoir realizes following operation when the computer program is run by the processor:
Active noise control system is sent to by reference to microphone pick earphone outside noise, and by the outside noise of acquisition；
The outside noise with reference to microphone pick is handled by the active noise control system, output offset is made an uproar
Sound is to microphone of eliminating the noise；
The counteracting noise received is externally exported by the noise elimination microphone, actual noise is offset.
8. mixed structure active noise reduction earphone according to claim 7, which is characterized in that the computer program is described
Following operation is also realized when processor is run:
Extraneous residual noise is acquired by error microphone, is transferred to the active noise control system；
The extraneous residual noise acquired by the active noise control system according to the error microphone is adjusted described active
The noise reduction system coefficient of noise control system.
9. mixed structure active noise reduction earphone according to claim 8, which is characterized in that the computer program is described
Following operation is also realized when processor is run:
By feedforward active noise control system according to the outside noise with reference to microphone pick, microphone is referred to described
The outside noise of acquisition is handled, and the weight coefficient of first group of noise control is generated；
Extraneous residual noise and the last moment of the error microphone acquisition are obtained by feedback active noise control system
The counteracting noise of the noise elimination microphone output, generates estimation noise input signal, based on the estimation noise input signal
Calculation obtains the weight coefficient of second group of noise control；
The weight coefficient of weight coefficient and second group of noise control based on first group of noise control is chosen to influence of noise
Biggish coefficient is recombinated, and best initial weights vector is obtained, and final output signal is calculated with this；
It repeats the above steps and carries out loop iteration processing.
10. a kind of computer readable storage medium, which is characterized in that be stored with computer on the computer readable storage medium
Program, the step of method as described in any one of claim 4-6 is realized when the computer program is run by processor.
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