CN107948785A - Earphone and the method adaptively adjusted to earphone execution - Google Patents
Earphone and the method adaptively adjusted to earphone execution Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 39
- 230000005236 sound signal Effects 0.000 claims abstract description 115
- 230000003044 adaptive effect Effects 0.000 claims abstract description 47
- 238000007781 pre-processing Methods 0.000 claims abstract description 31
- 230000004044 response Effects 0.000 claims description 34
- 238000001914 filtration Methods 0.000 claims description 13
- 230000008569 process Effects 0.000 claims description 9
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- 238000005516 engineering process Methods 0.000 description 3
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- 230000004308 accommodation Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
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Classifications
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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
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response
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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
- H04R1/1091—Details not provided for in groups H04R1/1008 - H04R1/1083
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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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- Headphones And Earphones (AREA)
Abstract
Disclose a kind of earphone and the method adaptively adjusted is performed to earphone.The earphone includes：Pre-processing filter, performs pretreatment to export the second audio signal to the first audio signal；Loudspeaker, is the sound wave into user's ear by the broadcasting of the second audio signal；Microphone, the 3rd audio signal is converted into by the sound wave；And adaptive algorithm unit, adaptive algorithm is performed to the first signal component and secondary signal component to update the filter factor for pre-processing filter, wherein, first signal component includes at least a portion of the 3rd audio signal, and secondary signal component includes at least a portion with corresponding second audio signal of described at least a portion of the 3rd audio signal.
Description
Technical field
It is used to perform earphone the present invention relates to the technical field of earphone, and more particularly, to a kind of earphone and one kind
The method adaptively adjusted.
Background technology
Generally, when user hears song via earphone, the bass volume that user perceives depends on earphone machinery
Seal the degree of user's ear.Earphone sealing duct is closer, and the bass volume being perceived is bigger.If in duct and ear
There is leakage between machine, the bass being perceived will be reduced.Because can not possibly all it be carried to all users by a kind of Machine Design
For consistent bass response, how to handle this difference in perception and challenge is provided for earphone developer.
Similar situation can be applied to any other frequency range that may also be varied with each individual.
Earphone can include In-Ear Headphones of headphone, PlayGear Stealth etc..
In the prior art, the response of earphone is calibrated in advance using test signal.However, if user is playing the song phase
Between adjust the wearing of his earphone, this will not work or inconvenient.
In addition, the real time calibration solution of the prior art is exported using the prediction of loudspeaker, this is probably inaccurate
With complexity.In this solution, frequency domain adaptive algorithm is used, this adds complexity to the design of earphone.
Therefore, in the art it is desirable that a kind of new solution for earphone is proposed, to handle the prior art
In at least one problem.
The content of the invention
It is an object of the present invention to provide a kind of new technical solution that adaptability pretreatment is carried out to earphone.
According to the first aspect of the invention, there is provided a kind of earphone, including：Pre-processing filter, receives the first audio letter
Number and pretreatment is performed to export the second audio signal to the first audio signal；Loudspeaker, receives the second audio signal and by the
The broadcasting of two audio signals is the sound wave into user's ear；Microphone, receives the sound wave and the sound wave is converted to the 3rd
Audio signal；And adaptive algorithm unit, receive the first signal component and secondary signal component, and to the first signal component and
Secondary signal component performs adaptive algorithm to update the filter factor for pre-processing filter, wherein, the first signal component
Include at least a portion of the 3rd audio signal, secondary signal component includes at least a portion phase with the 3rd audio signal
At least a portion of corresponding second audio signal.
Alternatively or alternatively, pre-processing filter is preequalization wave filter, and pre-processing filter is to the first audio signal
Perform preequalization.
Alternatively or alternatively, the first audio signal is the contextual audio signal from audio-source.
Alternatively or alternatively, the earphone further includes：First wave filter, wherein, the 3rd audio signal is coupled to first
The input of wave filter and the first wave filter the first signal component of generation；With the second wave filter, wherein, the second audio signal is coupled to
The input of second wave filter and the second wave filter generation secondary signal component.
Alternatively or alternatively, the earphone further includes：Target filter, wherein, the second audio signal is filtered via target
Ripple device is coupled to the input of the second wave filter, and target filter is based on the response of desired target frequency and the second audio signal is held
Row filtering process and to the second audio signal after the second wave filter output filtering.
Alternatively or alternatively, the first wave filter and the second wave filter have identical frequency response.
Alternatively or alternatively, the first and second wave filters are low-pass filters.
Alternatively or alternatively, the earphone further includes：Correlativity unit, calculates the first signal component and secondary signal point
Correlation between amount, and when definite correlation is less than predetermined threshold value, generation is ceased and desisted order；Wherein, to adaptive algorithm list
Member, which is sent, ceases and desist order to stop performing adaptive algorithm.
Alternatively or alternatively, the adaptive algorithm performed by adaptive algorithm unit is time domain adaptive algorithm.
Alternatively or alternatively, microphone be installed on earphone on, when user wear earphone when, microphone be located at loudspeaker with
Between user's eardrum.
According to the second aspect of the invention, there is provided a kind of to be used to perform the method adaptively adjusted, the side to earphone
Method includes：Receive the first pending audio signal；Pretreatment is performed to the first audio signal to export the second audio signal；Will
The broadcasting of second audio signal is the sound wave into user's ear；Collect the sound wave in user's ear and be converted into the signal of collection
3rd audio signal；Obtain the first signal component from least a portion of the 3rd audio signal, and from the 3rd audio signal
At least a portion of corresponding second audio signal of at least a portion obtains secondary signal component；And to the first signal
Component and secondary signal component perform adaptive algorithm to update the filter factor for pretreatment, to utilize the filtering of renewal
Coefficient performs pretreatment to the first audio signal.
Alternatively or alternatively, the pretreatment is pre-equalization process.
Alternatively or alternatively, the method further includes：The contextual audio signal from audio-source is received as the first sound
Frequency signal.
Alternatively or alternatively, the method further includes：The 3rd audio signal is filtered to obtain the first signal component and mistake
The second audio signal is filtered to obtain secondary signal component, wherein, based on the wave filter with identical frequency response to the 3rd sound
Frequency signal and the second audio signal are filtered.
Alternatively or alternatively, the method further includes：Selected desired target frequency response；Filtering the second audio letter
Number with before obtaining secondary signal component, the method further includes：Responded based on desired target frequency to the second audio signal
Perform filtering process.
Alternatively or alternatively, identical frequency response is low pass frequency response.
Alternatively or alternatively, the method further includes：Calculate the phase between the first signal component and secondary signal component
Guan Xing；When definite correlation is less than predetermined threshold value, generation is ceased and desisted order；And send and cease and desist order to stop performing adaptability
Algorithm.
Alternatively or alternatively, adaptive algorithm is time domain adaptive algorithm.
According to the embodiment of the application, a kind of new solution to earphone pretreatment is proposed.
Pass through the detailed description below with reference to attached drawing to exemplary embodiment according to the present invention, further feature of the invention
And its advantage will be clear.
Brief description of the drawings
It is combined in the description and the attached drawing of a part for constitution instruction shows the embodiment of the present invention, and even
It is used to explain the principle of the present invention together with its explanation.
Fig. 1 is the schematic block diagram of earphone according to an embodiment of the present application.
Fig. 2 is the schematic block diagram according to the earphone of another embodiment of the application.
Fig. 3 is the schematic block diagram according to the earphone of the another embodiment of the application.
Fig. 4 is the schematic flow that the method adaptively adjusted is performed to earphone according to another embodiment of the application
Figure.
Embodiment
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should be noted that：Unless in addition have
Body illustrates that the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The scope of invention.
The description only actually at least one exemplary embodiment is illustrative to be never used as to the present invention below
And its application or any restrictions that use.
It may be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but suitable
In the case of, the technology, method and apparatus should be considered as part for specification.
In shown here and discussion all examples, any occurrence should be construed as merely exemplary, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter represents similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it need not be further discussed in subsequent attached drawing in a attached drawing.
Embodiment and example will be described with reference to the drawings.
Fig. 1 is the schematic block diagram according to the earphone of the embodiment of the application.
As shown in Figure 1, earphone includes：Pre-processing filter 2, loudspeaker 3, microphone 4 and adaptive algorithm unit 6.
Pre-processing filter 2 receives the first audio signal and performs pretreatment to the first audio signal to export the second audio
Signal.For example, pre-processing filter 2 is preequalization wave filter, pre-processing filter performs preequalization to the first audio signal.
For example, the first audio signal generates in audio-source 1.Herein, the first audio signal is in audio-source 1
Hold audio signal.Audio-source 1 can be the input unit of earphone.In one example, the voice data of such as music data etc
It is stored locally in earphone.In this case, audio-source 1 can include the player of memory, codec etc..
Loudspeaker 3 receives the second audio signal and is the sound wave into user's ear by the broadcasting of the second audio signal.Raise one's voice
Device 3 can include dynamic loudspeaker, electrostatic loudspeaker etc..Optionally, loudspeaker can include MEMS loudspeakers.
Microphone 4 receives sound wave and converts acoustic waves into the 3rd audio signal.Microphone 4 can include dynamic microphones,
Electret Condencer Microphone etc..Optionally, microphone can include MEMS microphone.Those skilled in the art under teachings of the present application
To understand, microphone 4 is installed between loudspeaker and user's eardrum.Microphone 4 can capture the sound wave played in ear.
Adaptive algorithm unit 6 receives the first signal component and secondary signal component, and the first signal component and second are believed
Number component performs adaptive algorithm to generate the filter factor of pre-processing filter 2, and sends filtering system to pre-processing filter 2
Number.
First signal component includes at least a portion of the 3rd audio signal.Secondary signal component includes believing with the 3rd audio
Number corresponding second audio signal of described at least a portion at least a portion.In this respect, the first and second signals point
Amount can have identical frequency range.It is understood to one skilled in the art that term " corresponding " refers to the part in spy
Fixed aspect (such as, frequency range) corresponds to each other, but the other guide of the part can be different.
For example, according to the design needs, the first signal component can include the only a part or whole the of the 3rd audio signal
Three audio signals.Accordingly, secondary signal component can include the only a part of the second audio signal or whole second audio signal.
The input of adaptive algorithm unit 6 can be coupled to second and the 3rd audio signal.It will be understood by the skilled person that " coupling
Close " including connected directly or indirectly, i.e. when A is coupled to B, A is directly or indirectly connected to B.
For example, the adaptive algorithm that adaptive algorithm unit 6 performs is time domain adaptive algorithm.For pre- in the application
The design of processing, time domain adapt to be enough and more much simpler than frequency domain adaptation.
Herein, a kind of new solution of pretreatment is proposed, it can use the output of pre-processing filter and broadcast
The sound wave put is to calculate the coefficient of pre-processing filter.The program can be held during the contextual audio signal of such as song is played
The response of continuous ground accommodation earphone.Moreover, compared with prior art, this solution uses the reality of pre-processing filter
Output, rather than exported using the prediction of loudspeaker, this is much simpler and more efficient in configuration aspects.
Adaptive algorithm unit 6 can directly receive second and the 3rd audio signal, for example, as shown in Figure 1.Replace,
Adaptive algorithm unit can be coupled to second and the 3rd audio signal via intermediate member.
Fig. 2 is the schematic block diagram according to the earphone of another embodiment of the application.Component with same reference numerals
It is identical with the corresponding component in Fig. 1, therefore descriptions thereof will be omitted.
As shown in Fig. 2, earphone further includes the first wave filter 5 and the second wave filter 8.3rd audio signal is coupled to the first filter
The input of ripple device 5 and the first wave filter 5 the first signal component of generation.First signal component is sent to adaptive algorithm unit 6.
Second audio signal is coupled to the input of the second wave filter 8 and the second wave filter 8 generation secondary signal component.Secondary signal component
It is sent to adaptive algorithm unit 6.For example, the first and second wave filters 5,8 have identical frequency response.
By using the first and second wave filters 5,8, can obtain second and the 3rd audio signal expectations section with life
Into the coefficient of pre-processing filter 2.
Herein, as described, bass performance is concerned.So the first and second wave filters are low pass filtereds
Ripple device is to obtain the first and second signal components.
In another example, earphone further includes target filter 7.Second audio signal is coupled to via target filter 7
The input of second wave filter 8.Target filter 7 is based on desired target frequency and responds to the second audio signal execution filtering process
And to the second audio signal after 8 output filtering of the second wave filter.
By target filter 7, designer can select and/or control desired ideal response.For example, ideal response by
Designer selectes, and can objectively be defined based on literature research, or subjectively for example by means of golden ear (GoldenEars)
Definition.Optionally, headset user can select ideal response during content is played.Such as, there is provided the control of target filter 7
Unit (not shown), during the contextual audio signal of such as song is played, user can adjust target by the control unit
Wave filter 7.
Pretreatment solution in the application has the ability that such as bass response is adaptively adjusted to ideal response.
The pretreatment solution will provide similar target tonequality to any user, regardless of his ear shape and size.
Self-adjusting is that persistently aim curve is adaptively adjusted based on content of song etc. that earphone plays.Even if ear
Machine leakproofness changes (such as, when the user for wearing earphone is running) with the time, also can be in no user interaction
In the case of realize it is adaptive.This ensures that, regardless of mechanical seal during user movement, tonequality is all consistent.
In this embodiment, wave filter 5,7,8 is relative to the separated module of adaptive algorithm unit 6.Also should manage
Solve, in other embodiments, at least a portion of the function of wave filter 5,7,8 can be combined with adaptive algorithm unit 6.
Fig. 3 is the schematic block diagram according to the earphone of another embodiment of the application.
Component with same reference numerals is identical with the corresponding component in Fig. 1 or 2, therefore will omit descriptions thereof.
In the fig. 3 embodiment, earphone further includes correlativity unit 10.
Correlativity unit 10 calculates the correlation between the first signal component and secondary signal component, and when definite correlation
Generation is ceased and desisted order during less than predetermined threshold value.
In one example, cease and desist order and be also delivered to adaptive algorithm unit 6 to stop performing adaptive algorithm.
In this embodiment, the adaptive algorithm for pretreatment is controlled by determining correlation.By this way,
Energy expenditure can be saved in the case where no content signal inputs.Particularly, correlativity unit is used for whenever definite by wheat
The signal of gram wind capture is just stopped by when playing into ear and being polluted by other sound in addition to the music of ear reflection
Adapt to, other sound can be any other noise in white noise and/or environment, such as nearby other people talk or ear
The talk of the user of plug earphone, cough etc..If ceasing and desisting order from correlativity unit is not used, whenever user starts to talk
When words and/or cough or if there is external noise, this will cause to lose bass content suddenly in many cases.Utilize correlation
Property unit so that the response of loudspeaker remains consistent during these noises.
It will be understood by the skilled person that when correlation is higher than predetermined threshold value, the normal of adaptive algorithm can be performed
Rule are handled.
It will be understood by the skilled person that except some mechanical parts of loudspeaker, microphone etc., software are equivalent
In hardware.Just in this respect, under teachings of the present application, those skilled in the art are it is contemplated that what is shown in except Fig. 1 and 2 raises
Module outside sound device 3 and microphone 4 can be performed by hardware mode, software mode and/or both combinations.For example, mould
At least one in block 1,2,5,6,7,8,9 and 10 can be performed by discrete device, and such as PLD, DSP, FPGA's is programmable
Device.Replace, at least one in module 1,2,5,6,7,8,9 and 10 can be with the calculating of such as CPU or MPU and memory
Device, which combines, to be implemented, wherein, instruction storage during earphone is run in memory and for controlling computing device to perform pair
The operation answered.Just in this respect, the application is by the embodiment of unlimited molding block.Those skilled in the art can be in the religion of the application
Lead down in view of selected embodiments such as cost, market availabilities.
Fig. 4 is the schematic flow that the method adaptively adjusted is performed to earphone according to another embodiment of the application
Figure.Earphone can include pre-processing filter, loudspeaker, microphone and the adaptive algorithm unit as shown in Fig. 1,2 or 3.
As shown in step S1100, the first pending audio signal is received.
As shown in step S1200, pretreatment is performed to the first audio signal to export the second audio signal.For example, pre- place
Reason is preequalization.
It is the sound wave into user's ear by the broadcasting of the second audio signal as shown in step S1300.For example, the second audio
Signal is played by microphone 4, and microphone is installed on earphone, and when user wears earphone, microphone is located at loudspeaker and user
Between eardrum.
As shown in step S1400, the signal collected the sound wave in user's ear and collected is converted into the 3rd audio signal.
As shown in step S1500, the first signal component is obtained from least a portion of the 3rd audio signal, and from the 3rd
At least a portion of corresponding second audio signal of described at least a portion of audio signal obtains secondary signal component.
As shown in step S1600, adaptive algorithm is performed to the first signal component and secondary signal component and is used for updating
The filter factor of pretreatment, to perform pretreatment to the first audio signal using the filter factor of renewal.For example, adaptability is calculated
Method is time domain adaptive algorithm.
For example, the first audio signal is the contextual audio signal received from audio-source.
In one example, the method can further include：The 3rd audio signal is filtered to obtain the first signal component and mistake
The second audio signal is filtered to obtain secondary signal component, based on the wave filter with identical frequency response to the 3rd audio signal
Filtered with the second audio signal.
Moreover, this embodiment allows headset user to select ideal response during content is played.For example, the method can
To further include：Selected desired target frequency response；And the second audio signal is being filtered with before obtaining secondary signal component, institute
The method of stating further includes：Filtering process is performed to the second audio signal based on the response of desired target frequency.
For example, identical frequency response can be low pass frequency response.
In another example, the method can further include：Calculate between the first signal component and secondary signal component
Correlation；Generate and cease and desist order when definite correlation is less than predetermined threshold value；And send and cease and desist order to stop performing adaptability
Algorithm.
<Example>
The example of earphone will be described.The earphone can be the earphone shown in Fig. 1,2 or 3.For example, earphone is ear type
Earphone.
In this illustration, pre-processing filter preequalization music will be believed before music signal is played into user's ear
Number low frequency component.Initially, pre-processing filter can start into straight-through wave filter, so that music signal does not change.User
Sound wave in duct is by microphones capture signal in response.Microphone is built in the front cavity of earphone.Adaptive algorithm is used
In the coefficient that pre-processing filter is continuously updated based on the deviation between this response signal and previously determined echo signal.Example
Such as, by the way that music signal is delivered to target filter, echo signal can be obtained, which can have by designing
The ideal response that person defines.
Particularly, music signal is sent in pre-processing filter.Pre-processing filter is based on current filter coefficient mistake
Filter music signal.Initially, pre-processing filter is set to straight-through wave filter, so that music signal does not change.
The output of pre-processing filter is sent to loudspeaker, then plays and enters user's ear.
Sound wave in user's duct is by the signal in response of the microphones capture in the front cavity of earphone.
Response signal is used as the first signal component by the first filters filter, and the first signal component only includes to be adapted to
Frequency range.First wave filter can be the bandpass filter or low-pass filter of the frequency range based on concern.
Meanwhile the output of pre-processing filter is also through the target filter responded based on desired target frequency.Target
Wave filter exports echo signal.Echo signal passes through the second filters filter.Second wave filter and the first wave filter have identical
Frequency response.
Then, adaptive algorithm unit updates the filter factor of pre-processing filter and sends back to the filter factor
Pre-processing filter.
Repeated the above process during music signal is played.
Although elaborating some specific embodiments of the present invention by example, those skilled in the art will manage
Solve above-mentioned example and be only intended to be the scope being schematically not intended to limit the present invention.
Claims (18)
1. a kind of earphone, including：
Pre-processing filter, receives the first audio signal and performs pretreatment to the first audio signal to export the second audio letter
Number；
Loudspeaker, receive the second audio signal and by the second audio signal play be into user's ear sound wave；
Microphone, receives the sound wave and the sound wave is converted to the 3rd audio signal；And
Adaptive algorithm unit, receives the first signal component and secondary signal component, and to the first signal component and secondary signal
Component performs adaptive algorithm to update the filter factor for pre-processing filter, wherein, the first signal component includes the 3rd
At least a portion of audio signal, secondary signal component include and described at least a portion of the 3rd audio signal corresponding the
At least a portion of two audio signals.
2. earphone according to claim 1, wherein, pre-processing filter is preequalization wave filter, pre-processing filter pair
First audio signal performs preequalization.
3. earphone according to claim 1 or 2, wherein, the first audio signal is the contextual audio signal from audio-source.
4. earphone according to claim 1 or 2, further includes：
First wave filter, wherein, the 3rd audio signal is coupled to the input of the first wave filter and the first letter of the first wave filter generation
Number component；With
Second wave filter, wherein, the second audio signal is coupled to the input of the second wave filter and the second letter of the second wave filter generation
Number component.
5. earphone according to claim 4, further includes：
Target filter, wherein, the second audio signal is coupled to the input of the second wave filter via target filter, and target is filtered
Ripple device is based on desired target frequency and responds to perform the second audio signal filtering process and to after the second wave filter output filtering
The second audio signal.
6. earphone according to claim 4, wherein, the first wave filter and the second wave filter have identical frequency response.
7. earphone according to claim 6, wherein, the first and second wave filters are low-pass filters.
8. earphone according to claim 4, further includes：
Correlativity unit, calculates the correlation between the first signal component and secondary signal component, and when definite correlation is less than
During predetermined threshold value, generation is ceased and desisted order；
Wherein, send and ceased and desisted order to stop performing adaptive algorithm to adaptive algorithm unit.
9. earphone according to claim 1 or 2, wherein, the adaptive algorithm performed by adaptive algorithm unit is time domain
Adaptive algorithm.
10. earphone according to claim 1 or 2, wherein, microphone is installed on earphone, when user wears earphone, wheat
Gram wind is between loudspeaker and user's eardrum.
11. a kind of be used to perform the method adaptively adjusted to earphone, the described method includes：
Receive the first pending audio signal；
Pretreatment is performed to the first audio signal to export the second audio signal；
It is the sound wave into user's ear by the broadcasting of the second audio signal；
Collect the sound wave in user's ear and the signal of collection is converted into the 3rd audio signal；
The first signal component is obtained from least a portion of the 3rd audio signal, and from described in the 3rd audio signal at least one
At least a portion of corresponding second audio signal in part obtains secondary signal component；And
Adaptive algorithm is performed to update the filter factor for pretreatment to the first signal component and secondary signal component, so as to
Pretreatment is performed to the first audio signal using the filter factor of renewal.
12. according to the method for claim 12, wherein, the pretreatment is pre-equalization process.
13. the method according to claim 11 or 12, further includes：Receive the contextual audio signal from audio-source and be used as the
One audio signal.
14. according to any methods of claim 11-12, further include：
The 3rd audio signal is filtered to obtain the first signal component and the second audio signal of filtering to obtain secondary signal component, its
In, the 3rd audio signal and the second audio signal are filtered based on the wave filter with identical frequency response.
15. according to the method for claim 14, further include：
Selected desired target frequency response；
The second audio signal is being filtered so that before obtaining secondary signal component, the method further includes：
Filtering process is performed to the second audio signal based on the response of desired target frequency.
16. according to the method for claim 14, wherein, identical frequency response is low pass frequency response.
17. according to the method for claim 14, further include：
Calculate the correlation between the first signal component and secondary signal component；
When definite correlation is less than predetermined threshold value, generation is ceased and desisted order；And
Transmission is ceased and desisted order to stop performing adaptive algorithm.
18. according to any methods of claim 11-12, wherein, adaptive algorithm is time domain adaptive algorithm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNPCT/CN2017/107362 | 2017-10-23 | ||
| PCT/CN2017/107362 WO2019079948A1 (en) | 2017-10-23 | 2017-10-23 | Earphone and method for performing an adaptively self-tuning for an earphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107948785A true CN107948785A (en) | 2018-04-20 |
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|---|---|---|---|
| CN201711173656.3A Pending CN107948785A (en) | 2017-10-23 | 2017-11-22 | Earphone and the method adaptively adjusted to earphone execution |
| CN201721577341.0U Active CN207652638U (en) | 2017-10-23 | 2017-11-22 | Earphone |
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| CN201721577341.0U Active CN207652638U (en) | 2017-10-23 | 2017-11-22 | Earphone |
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| WO (1) | WO2019079948A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN207652638U (en) | 2018-07-24 |
| WO2019079948A1 (en) | 2019-05-02 |
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