CN108377436A - A kind of method, apparatus and active noise reduction earphone adjusting active noise reduction earphone gain - Google Patents
A kind of method, apparatus and active noise reduction earphone adjusting active noise reduction earphone gain Download PDFInfo
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- CN108377436A CN108377436A CN201810068485.6A CN201810068485A CN108377436A CN 108377436 A CN108377436 A CN 108377436A CN 201810068485 A CN201810068485 A CN 201810068485A CN 108377436 A CN108377436 A CN 108377436A
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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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Abstract
The invention discloses a kind of method, apparatus adjusting active noise reduction earphone gain and active noise reduction earphone, this method to include：The active noise reduction amount of left earphone and right earphone based on acquisition, it is compared respectively with default noise reduction threshold value, the gain of left earphone and/or right earphone less than default noise reduction threshold value is adjusted, until the active noise reduction amount of left earphone and right earphone is not less than default noise reduction threshold value；The absolute value for calculating the difference of the active noise reduction amount of left earphone and right earphone, obtains noise reduction difference；The gain of left earphone and right earphone is adjusted if noise reduction difference is more than preset difference value threshold value, until noise reduction difference is not more than preset difference value threshold value.This method makes product meet testing standard, reduces the fraction defective and repair rate of production, improves production efficiency.
Description
Technical field
The present invention relates to earphone field, more particularly to a kind of method, apparatus adjusting active noise reduction earphone gain and active
Noise cancelling headphone.
Background technology
Currently, active noise reduction techniques are increasingly used in various earphones, and have wearing for active noise reduction function
Earphone is very popular.In the actual production process of earphone, the consistency to left and right ear noise reduction is needed to test,
And horn single body and the difference of microphone monomer and accessory, hardware circuit control etc. all can cause the noise reduction of earphone inconsistent
Problem influences user experience.
Invention content
A kind of method, apparatus and active noise reduction earphone adjusting active noise reduction earphone gain provided by the invention, to solve
The inconsistent problem of earphone of appearance or so noise reduction.
According to an aspect of the invention, there is provided a kind of method adjusting active noise reduction earphone gain, the method packet
It includes：
The active noise reduction amount of left earphone and right earphone based on acquisition is compared with default noise reduction threshold value respectively, right
It is adjusted less than the left earphone of default noise reduction threshold value and/or the gain of right earphone, until the active of left earphone and right earphone
Noise reduction is not less than default noise reduction threshold value；
The absolute value for calculating the difference of the active noise reduction amount of left earphone and right earphone, obtains noise reduction difference；
The gain that left earphone and right earphone are adjusted if the noise reduction difference is more than preset difference value threshold value, until the drop
The amount of making an uproar difference is not more than preset difference value threshold value.
Optionally, described pair less than the left earphone of default noise reduction threshold value and/or the gain of right earphone be adjusted including：
The gain for being less than the left earphone of default noise reduction threshold value and/or the noise reduction microphone of right earphone to active noise reduction amount increases the first increasing
Benefit value, wherein first yield value is according to used in the practical noise reduction of left earphone and right earphone and left earphone and right earphone
Noise reduction chip parameter determines.
Optionally, noise reduction core used in practical noise reduction and earphone of wherein described first yield value according to earphone
Piece parameter determines：
Calculate the absolute difference of the active noise reduction amount and the default noise reduction threshold value of the machine of picking up the ears；
Calculate absolute difference yield value corresponding with the noise reduction chip per unit noise reduction used in machine of picking up the ears
Ratio, obtain first yield value.
Optionally, the gain that left earphone and right earphone are adjusted if the noise reduction difference is more than preset difference value threshold value
Including：When the noise reduction difference is more than preset difference value threshold value, the noise reduction microphone of the side earphone high to active noise reduction amount
The second yield value of gain reduction, the gain of the noise reduction microphone of the side earphone low to active noise reduction amount increases the second gain
Value, wherein second yield value is used according to the practical noise reduction difference of left earphone and right earphone with left earphone and right earphone
Noise reduction chip parameter determine.
Wherein described second yield value is according to the practical noise reduction difference of left earphone and right earphone and left earphone and the right side
Noise reduction chip parameter used in earphone determines：
Optionally, the absolute difference of the active noise reduction amount and the preset difference value threshold value of the machine of picking up the ears is calculated；
Calculate absolute difference yield value corresponding with the noise reduction chip per unit noise reduction used in machine of picking up the ears
Ratio；
The ratio is halved, second yield value is obtained.
Optionally, the method further includes：Gain-adjusted range is determined according to risk of uttering long and high-pitched sounds, and controls left earphone and right earphone
Gain adjusted within the scope of the gain-adjusted.
According to another aspect of the present invention, a kind of device adjusting active noise reduction earphone gain, described device are provided
Including：First gain adjustment unit, difference computational unit, the second gain adjustment unit,
First gain adjustment unit, for by the active noise reduction amount of left earphone and right earphone respectively with default noise reduction
Threshold value is compared, and the gain of left earphone and/or right earphone less than default noise reduction threshold value is adjusted, until left earphone
It is all higher than default noise reduction threshold value with the active noise reduction amount of right earphone；
The difference computational unit, the absolute value of the difference of the active noise reduction amount for calculating left earphone and right earphone, obtains
To noise reduction difference；
Second gain adjustment unit, for the noise reduction difference to be compared with preset difference value threshold value, if institute
It states noise reduction difference to be more than preset difference value threshold value then while adjusting the gain of left earphone and right earphone, until the noise reduction difference
No more than preset difference value threshold value.
Optionally,
First gain adjustment unit is specifically used for：It is less than the left earphone of default noise reduction threshold value to active noise reduction amount
And/or the gain of the noise reduction microphone of right earphone increases the first yield value, first yield value is according to left earphone and right earphone
Practical noise reduction and left earphone and right earphone used in noise reduction chip parameter determine.
Second gain adjustment unit is specifically used for：When the noise reduction difference is more than preset difference value threshold value, compare
The height of the active noise reduction amount of left earphone and right earphone；The gain of the noise reduction microphone of the side earphone high to active noise reduction amount is dropped
Low second yield value, the gain of the noise reduction microphone of the side earphone low to active noise reduction amount increase the second yield value, and described the
Two yield values are joined according to noise reduction chip used in the practical noise reduction difference of left earphone and right earphone and left earphone and right earphone
Number determines.
Optionally, described device further includes：Gain-adjusted control unit, for determining gain-adjusted model according to risk of uttering long and high-pitched sounds
It encloses, the gain for controlling left earphone and right earphone is adjusted within the scope of the gain-adjusted.
According to a further aspect of the invention, a kind of active noise reduction earphone is provided, the earphone includes memory and place
Device is managed, is communicated and is connected by internal bus between the memory and the processor, the memory is stored with can be by institute
The computer program for stating processor execution, can realize above-mentioned adjusting master when the computer program is executed by the processor
The method and step of dynamic noise cancelling headphone gain.
The advantageous effect of the embodiment of the present invention is：By the left earphone of acquisition and the active noise reduction amount of right earphone, respectively with
Default noise reduction threshold value is compared, and the gain of left earphone and/or right earphone less than default noise reduction threshold value is adjusted,
Until the active noise reduction amount of left earphone and right earphone is not less than default noise reduction threshold value；Calculate the active drop of left earphone and right earphone
The absolute value of the difference for the amount of making an uproar obtains noise reduction difference；If noise reduction difference be more than preset difference value threshold value if adjust left earphone and
The gain of right earphone, until noise reduction difference is not more than preset difference value threshold value.When appearance because monomer difference and accessory difference are made
At left earphone and when inconsistent right earphone noise reduction, left earphone and right earphone are automatically adjusted by above-mentioned gain adjusting method therefore
Noise reduction microphone gain keeps left earphone consistent with the noise reduction of right earphone and meets noise reduction requirement, so that product meets
Noise reduction standard improves user experience.
Description of the drawings
Fig. 1 is a kind of method flow diagram adjusting active noise reduction earphone gain provided in an embodiment of the present invention；
Fig. 2 is another method flow diagram for adjusting active noise reduction earphone gain provided in an embodiment of the present invention；
Fig. 3 is a kind of installation drawing adjusting active noise reduction earphone gain provided in an embodiment of the present invention；
Fig. 4 is a kind of active noise reduction earphone schematic diagram provided in an embodiment of the present invention.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.Embodiment described in following exemplary embodiment does not represent consistent with the application
All embodiments.On the contrary, they are only and some aspects phase one as detailed in the attached claim, the application
The example of the device and method of cause.
It is the purpose only merely for description specific embodiment in term used in this application, is not intended to be limiting the application.
It is also intended to including majority in the application and "an" of singulative used in the attached claims, " described " and "the"
Form, unless context clearly shows that other meanings.
Fig. 1 is a kind of method flow diagram adjusting active noise reduction earphone gain provided in an embodiment of the present invention, such as Fig. 1 institutes
Show, this approach includes the following steps：
S11：The active noise reduction amount of left earphone and right earphone based on acquisition is compared with default noise reduction threshold value respectively
Compared with, the gain of left earphone and/or right earphone less than default noise reduction threshold value is adjusted, until left earphone and right earphone
Active noise reduction amount is not less than default noise reduction threshold value；
S12：The absolute value for calculating the difference of the active noise reduction amount of left earphone and right earphone, obtains noise reduction difference；
S13：The gain that left earphone and right earphone are adjusted if noise reduction difference is more than preset difference value threshold value, until noise reduction
Difference is not more than preset difference value threshold value.
Active noise reduction earphone includes feed-forward type active noise reduction earphone and feedback-type active noise reduction earphone.The two reduces noise
Operation principle is different, wherein feedforward system designs commonly used in In-Ear Headphones, in feed forward type system, samples microphone position
Outside earphone, to acquire the noise for entering earphone, loudspeaker are to play inversion signal, to offset noise.This feedforward
Type active noise reduction earphone does not have to consider stability problem, and exploitation is easier to, but because microphone is located at outside earphone, will produce wind
Noise, feedback-type active noise reduction earphone can overcome this disadvantage.In reaction type system, microphone is located inside earphone, adopts
Collect so-called " error signal ", this is to say, the signal that microphone acquires the music signal of normal play and residual noise mixes,
After the music signal of normal play is subtracted, remaining noise is just obtained.By appropriate feedback circuit, error signal can be made
It is small as far as possible with the difference of normal music, that is, reduce noise.
The method of the present invention is primarily adapted for use in the production line test and gain-adjusted of feedback-type active noise reduction earphone, for feedback
Type active noise reduction earphone,
The gain of left earphone and/or right earphone less than default noise reduction threshold value is adjusted specially in above-mentioned S11：
The gain for being less than the left earphone of default noise reduction threshold value and/or the noise reduction microphone of right earphone to active noise reduction amount increases the first increasing
Benefit value, wherein the first yield value is according to noise reduction used in the practical noise reduction of left earphone and right earphone and left earphone and right earphone
Chip parameter determines.
First yield value determine specific method be：Calculate the active noise reduction amount of the machine of picking up the ears and default noise reduction threshold value
Absolute difference；Calculating difference absolute value yield value corresponding with the noise reduction chip per unit noise reduction used in machine of picking up the ears
Ratio obtains the first yield value.
Adjust the increasing of left earphone and right earphone in above-mentioned S13 simultaneously if the noise reduction difference is more than preset difference value threshold value
Benefit is specially：When noise reduction difference is more than preset difference value threshold value, the noise reduction microphone of the side earphone high to active noise reduction amount
The second yield value of gain reduction, the gain of the noise reduction microphone of the side earphone low to active noise reduction amount increases the second gain
Value, wherein the second yield value is dropped according to the practical noise reduction difference of left earphone and right earphone with used in left earphone and right earphone
Chip parameter of making an uproar determines.
Second yield value determine specific method be：Calculate the difference of the active noise reduction amount and preset difference value threshold value of the machine of picking up the ears
It is worth absolute value；The ratio of calculating difference absolute value and the corresponding yield value of noise reduction chip per unit noise reduction used in machine of picking up the ears
Value；Ratio is halved, the second yield value is obtained.
It should be noted that since ear microphone gain is uttered long and high-pitched sounds greatly very much risk, the adjustable gain model of microphone
It encloses and should give control, ensure that earphone will not utter long and high-pitched sounds when being transferred to maximum gain.In a preferred embodiment, the method for the present invention is also
Including：Gain-adjusted range is determined according to risk of uttering long and high-pitched sounds, and the gain for controlling left earphone and right earphone is adjusted within the scope of gain-adjusted
Section, to reduce the risk of uttering long and high-pitched sounds in earphone gain adjustment process.
Fig. 2 is another method flow diagram for adjusting active noise reduction earphone gain provided in an embodiment of the present invention, such as Fig. 2 institutes
Show, this approach includes the following steps：
Step S21：The active noise reduction amount of left earphone and right earphone is tested respectively；
Step S22：Judge whether the active noise reduction amount of left earphone and right earphone meets the requirements, if it is not, then operating procedure
S23, if so, operating procedure S24；
Step S23：The active noise reduction amount of left earphone and right earphone is compared with default noise reduction threshold value respectively, to low
It is adjusted in the left earphone of default noise reduction threshold value and/or the gain of right earphone；Specially according to left earphone and right earphone
Practical noise reduction and noise reduction chip parameter used in left earphone and right earphone, are less than default noise reduction threshold value to active noise reduction amount
Left earphone and/or the gain of noise reduction microphone of right earphone increase the first yield value, after automatic gain control, return to step
S21 again tests the active noise reduction amount of left earphone and right earphone after gain-adjusted, until making left earphone and right earphone
Active noise reduction amount be not less than default noise reduction threshold value, meet noise reduction requirement；
By taking AMS noise reduction chips as an example, the noise reduction of every 1 numerical value corresponds to 0.375Db gain in AMS noise reduction chips
Value, if default noise reduction threshold value is A, the left earphone of test and the active noise reduction amount of right earphone are respectively B and C, compare A and B, C
Size the gain of left earphone is increased into (A-B)/0.375 if C ＞ A, B ＜ A, then need the gain for adjusting left earphone.
Step S24：The absolute value for calculating the difference of the active noise reduction amount of left earphone and right earphone, obtains noise reduction difference；
Step S25：Judge whether noise reduction difference is more than preset difference value threshold value, if so, operating procedure S26, if it is not, then
Terminate operation.
Step S26：The height for comparing the active noise reduction amount of left earphone and right earphone, according to the reality of left earphone and right earphone
Noise reduction difference and noise reduction chip parameter, the noise reduction of the side earphone high to active noise reduction amount used in left earphone and right earphone
The gain of the second yield value of gain reduction of microphone, the noise reduction microphone of the side earphone low to active noise reduction amount increases second
Yield value, and return to step S21.
By taking AMS noise reduction chips as an example, the noise reduction of every 1 numerical value corresponds to 0.375Db gain in AMS noise reduction chips
Value, if preset difference value threshold value is D, the noise reduction difference of the active noise reduction amount of the left earphone and right earphone that are calculated is E, works as E
It when ＞ D, then needs to carry out gain-adjusted to left and right earphone, it is (E-D)/0.375/2 to adjust numerical value, i.e., high to active noise reduction amount
Side earphone noise reduction microphone gain reduction (E-D)/0.375/2 yield value, low to active noise reduction amount one picks up the ears
The gain of the noise reduction microphone of machine increases (E-D)/0.375/2 yield value
The present invention gain adjusting method therefore, both considered the difference of noise reduction microphone monomer, to unilateral or bilateral earphone into
Row gain-adjusted makes the active noise reduction amount of left earphone and right earphone both sides earphone respectively meet noise reduction requirement, it is contemplated that left
Right accessory difference further judges the difference of the noise reduction of left and right earphone, is carried out at the same time gain-adjusted to bilateral earphone, makes left ear
Machine is consistent with the noise reduction of right earphone.
Fig. 3 is a kind of installation drawing adjusting active noise reduction earphone gain provided in an embodiment of the present invention, as shown in figure 3, should
Device 30 includes：First gain adjustment unit 301, difference computational unit 302, the second gain adjustment unit 303,
First gain adjustment unit 301, for by the active noise reduction amount of left earphone and right earphone respectively with default noise reduction
Threshold value is compared, and the gain of left earphone and/or right earphone less than default noise reduction threshold value is adjusted, until left earphone
It is all higher than default noise reduction threshold value with the active noise reduction amount of right earphone；It is specifically used for：Default noise reduction is less than to active noise reduction amount
The gain of the left earphone of threshold value and/or the noise reduction microphone of right earphone increases the first yield value, and first yield value is according to left ear
The practical noise reduction of machine and right earphone is determined with noise reduction chip parameter used in left earphone and right earphone.
Difference computational unit 302, the absolute value of the difference of the active noise reduction amount for calculating left earphone and right earphone, obtains
Noise reduction difference；
Second gain adjustment unit 303, for noise reduction difference to be compared with preset difference value threshold value, if noise reduction is poor
Value is more than the gain that preset difference value threshold value then adjusts left earphone and right earphone simultaneously, until noise reduction difference is not more than preset difference value
Threshold value is specifically used for：When noise reduction difference is more than preset difference value threshold value, the active noise reduction amount of more left earphone and right earphone
Just；The second yield value of gain reduction of the noise reduction microphone of the side earphone high to active noise reduction amount is low to active noise reduction amount
The gain of noise reduction microphone of side earphone increase the second yield value, second yield value is according to the reality of left earphone and right earphone
Border noise reduction difference is determined with noise reduction chip parameter used in left earphone and right earphone.
Fig. 3 shown devices further include noise reduction test cell, the active noise reduction for testing left earphone and right earphone respectively
Amount.
Fig. 3 shown devices further include gain-adjusted control unit, for determining gain-adjusted range according to risk of uttering long and high-pitched sounds, are controlled
The gain for making left earphone and right earphone is adjusted within the scope of the gain-adjusted.
Fig. 4 is a kind of active noise reduction earphone schematic diagram provided in an embodiment of the present invention, as shown in figure 4, the device 40 includes
Memory 401 and processor 402 are communicated by internal bus 403 between memory 401 and processor 402 and are connected, memory
401 are stored with the computer program that can be executed by processor 402, and computer program can be realized when being executed by processor 402
The method and step of above-mentioned adjusting active noise reduction earphone gain.
In various embodiments, memory 401 can be memory or nonvolatile memory.It is wherein non-volatile to deposit
Reservoir can be：Memory driver (such as hard disk drive), solid state disk, any kind of storage dish (such as CD, DVD),
Either similar storage medium or combination thereof.Memory can be：RAM (Radom Access Memory, arbitrary access
Memory), volatile memory, nonvolatile memory, flash memory.Further, nonvolatile memory and memory can as machine
Storage medium is read, the computer program executed by processor 402 can be stored thereon, realizes that adjusting active noise reduction earphone above-mentioned increases
The method of benefit, this method have been elaborated in the embodiment that Fig. 1 or Fig. 2 are provided, and details are not described herein.
For device embodiments, since it corresponds essentially to embodiment of the method, so related place is referring to method reality
Apply the part explanation of example.The apparatus embodiments described above are merely exemplary, can select according to the actual needs
Some or all of module therein is selected to achieve the purpose of the solution of this embodiment.Those of ordinary skill in the art are not paying wound
In the case that the property made is worked, you can to understand and implement.
In conclusion the active noise reduction amount by testing left earphone and right earphone respectively, by the master of left earphone and right earphone
Dynamic noise reduction is compared with default noise reduction threshold value respectively, to the left earphone and/or right earphone less than default noise reduction threshold value
Gain retest after corresponding gain increase the active noise reduction amount of left earphone and right earphone, until left earphone and auris dextra
After the active noise reduction amount of machine is all higher than default noise reduction threshold value, the exhausted of the difference of the active noise reduction amount of left earphone and right earphone is calculated
To value, noise reduction difference is obtained, noise reduction difference is compared with preset difference value threshold value, if noise reduction difference is poor more than default
It is worth threshold value, then the corresponding yield value of gain reduction of the noise reduction microphone of the side earphone high to active noise reduction amount, active is dropped
The gain of the noise reduction microphone of the low side earphone of the amount of making an uproar increases corresponding yield value, retests the master of left earphone and right earphone
Dynamic noise reduction simultaneously adjusts the active noise reduction amount of left earphone and right earphone to meeting the requirements, until noise reduction difference is poor no more than default
It is worth threshold value, to complete, to the automatic gain control of active noise reduction earphone, earphone to be made to meet production requirement.When appearance is because of monomer
When left earphone caused by difference and accessory difference and inconsistent right earphone noise reduction, automatically adjusted by above-mentioned test adjusting method
The noise reduction microphone gain of left earphone and right earphone is participated in without artificial, keeps left earphone consistent with the noise reduction of right earphone and full
Sufficient noise reduction requirement ensures product quality so that product meets testing standard, improves user experience.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent replacement, improvement and so within the spirit and principles in the present invention, are all contained in protection scope of the present invention
It is interior.
Claims (10)
1. a kind of method adjusting active noise reduction earphone gain, which is characterized in that the method includes：
The active noise reduction amount of left earphone and right earphone based on acquisition is compared respectively with default noise reduction threshold value, to being less than
The left earphone of default noise reduction threshold value and/or the gain of right earphone are adjusted, until the active noise reduction of left earphone and right earphone
Amount is not less than default noise reduction threshold value；
The absolute value for calculating the difference of the active noise reduction amount of left earphone and right earphone, obtains noise reduction difference；
The gain that left earphone and right earphone are adjusted if the noise reduction difference is more than preset difference value threshold value, until the noise reduction
Difference is not more than preset difference value threshold value.
2. the method as described in claim 1, which is characterized in that described pair less than default noise reduction threshold value left earphone and/or
The gain of right earphone be adjusted including：
The gain for being less than the left earphone of default noise reduction threshold value and/or the noise reduction microphone of right earphone to active noise reduction amount increases the
One yield value, wherein first yield value is made according to the practical noise reduction of left earphone and right earphone and left earphone and right earphone
Noise reduction chip parameter determines.
3. method as claimed in claim 2, which is characterized in that wherein described first yield value is according to the practical drop of earphone
Noise reduction chip parameter used in the amount of making an uproar and earphone determines：
Calculate the absolute difference of the active noise reduction amount and the default noise reduction threshold value of the machine of picking up the ears；
Calculate the ratio of the absolute difference and the corresponding yield value of noise reduction chip per unit noise reduction used in machine of picking up the ears
Value obtains first yield value.
4. the method as described in claim 1, which is characterized in that described if the noise reduction difference is more than preset difference value threshold value
The gain for adjusting left earphone and right earphone includes：
When the noise reduction difference is more than preset difference value threshold value, the noise reduction microphone of the side earphone high to active noise reduction amount
The gain of the second yield value of gain reduction, the noise reduction microphone of the side earphone low to active noise reduction amount increases the second yield value,
Wherein described second yield value is according to used in the practical noise reduction difference of left earphone and right earphone and left earphone and right earphone
Noise reduction chip parameter determines.
5. method as claimed in claim 4, which is characterized in that wherein described second yield value is according to left earphone and auris dextra
The practical noise reduction difference of machine is determined with noise reduction chip parameter used in left earphone and right earphone：
Calculate the absolute difference of the active noise reduction amount and the preset difference value threshold value of the machine of picking up the ears；
Calculate the ratio of the absolute difference and the corresponding yield value of noise reduction chip per unit noise reduction used in machine of picking up the ears
Value；
The ratio is halved, second yield value is obtained.
6. method as described in any one of claims 1-3, which is characterized in that the method further includes：
Gain-adjusted range is determined according to risk of uttering long and high-pitched sounds, and controls the gain of left earphone and right earphone within the scope of the gain-adjusted
It adjusts.
7. a kind of device adjusting active noise reduction earphone gain, which is characterized in that described device includes：First gain-adjusted list
Member, difference computational unit, the second gain adjustment unit,
First gain adjustment unit, for by the active noise reduction amount of left earphone and right earphone respectively with default noise reduction threshold value
It is compared, the gain of left earphone and/or right earphone less than default noise reduction threshold value is adjusted, until left earphone and the right side
The active noise reduction amount of earphone is all higher than default noise reduction threshold value；
The difference computational unit, the absolute value of the difference of the active noise reduction amount for calculating left earphone and right earphone, is dropped
The amount of making an uproar difference；
Second gain adjustment unit, for the noise reduction difference to be compared with preset difference value threshold value, if the drop
The amount of making an uproar difference is more than the gain that preset difference value threshold value then adjusts left earphone and right earphone, until the noise reduction difference is no more than pre-
If difference threshold.
8. device as claimed in claim 7, which is characterized in that first gain adjustment unit is specifically used for：
The gain for being less than the left earphone of default noise reduction threshold value and/or the noise reduction microphone of right earphone to active noise reduction amount increases the
One yield value, first yield value is according to used in the practical noise reduction of left earphone and right earphone and left earphone and right earphone
Noise reduction chip parameter determines.
Second gain adjustment unit is specifically used for：
When the noise reduction difference is more than preset difference value threshold value, the height of the active noise reduction amount of more left earphone and right earphone；
The second yield value of gain reduction of the noise reduction microphone of the side earphone high to active noise reduction amount, the side low to active noise reduction amount
The gain of the noise reduction microphone of earphone increases the second yield value, and second yield value is according to the practical drop of left earphone and right earphone
The amount of making an uproar difference is determined with noise reduction chip parameter used in left earphone and right earphone.
9. such as claim 7-8 any one of them devices, which is characterized in that described device further includes：
Gain-adjusted control unit controls the increasing of left earphone and right earphone for determining gain-adjusted range according to risk of uttering long and high-pitched sounds
Benefit is adjusted within the scope of the gain-adjusted.
10. a kind of active noise reduction earphone, which is characterized in that including memory and processor, the memory is stored with can be by
The computer program that the processor executes, can realize claim 1- when the computer program is executed by the processor
The method and step of adjusting active noise reduction earphone gain described in 6 any one.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109672970A (en) * | 2018-11-01 | 2019-04-23 | 恒玄科技（上海）有限公司 | A kind of more microphone/ear-headphone echo cancellation filter coefficient calibration methods |
| CN110278506A (en) * | 2019-06-19 | 2019-09-24 | 惠州联韵声学科技有限公司 | TWS bluetooth headset active noise reduction ears debug pair system and method automatically |
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| CN109672970A (en) * | 2018-11-01 | 2019-04-23 | 恒玄科技（上海）有限公司 | A kind of more microphone/ear-headphone echo cancellation filter coefficient calibration methods |
| CN110278506A (en) * | 2019-06-19 | 2019-09-24 | 惠州联韵声学科技有限公司 | TWS bluetooth headset active noise reduction ears debug pair system and method automatically |
| CN111800723A (en) * | 2019-06-19 | 2020-10-20 | 深圳市豪恩声学股份有限公司 | Active noise reduction earphone testing method and device, terminal equipment and storage medium |
| CN111800723B (en) * | 2019-06-19 | 2021-07-23 | 深圳市豪恩声学股份有限公司 | Active noise reduction earphone testing method and device, terminal equipment and storage medium |
| CN110278506B (en) * | 2019-06-19 | 2024-06-07 | 惠州联韵声学科技有限公司 | TWS Bluetooth headset active noise reduction double-ear automatic debugging pairing system and method |
| CN110784804A (en) * | 2019-10-31 | 2020-02-11 | 歌尔科技有限公司 | Wireless earphone noise reduction calibration method and device, earphone box and storage medium |
| CN110784804B (en) * | 2019-10-31 | 2021-02-02 | 歌尔科技有限公司 | Wireless earphone noise reduction calibration method and device, earphone box and storage medium |
| CN111464930A (en) * | 2020-05-12 | 2020-07-28 | 歌尔智能科技有限公司 | Howling detection method and device for earphone and storage medium |
| CN111800704B (en) * | 2020-08-07 | 2022-10-25 | 深圳市科奈信科技有限公司 | Method and system for balanced adjustment of sound effect of double earphones |
| CN111800704A (en) * | 2020-08-07 | 2020-10-20 | 深圳市科奈信科技有限公司 | Double-earphone sound effect equalization adjusting method and system |
| CN114125635A (en) * | 2021-11-26 | 2022-03-01 | 深圳市逸音科技有限公司 | Active noise reduction earphone pairing connection method |
| CN114040300A (en) * | 2021-11-29 | 2022-02-11 | 歌尔科技有限公司 | Earphone active noise reduction method and device, earphone and computer readable storage medium |
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| CN114071309B (en) * | 2021-12-20 | 2023-08-25 | 歌尔科技有限公司 | Earphone noise reduction method, device, equipment and computer readable storage medium |
| CN114071309A (en) * | 2021-12-20 | 2022-02-18 | 歌尔科技有限公司 | Earphone noise reduction method, device, equipment and computer readable storage medium |
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Application publication date: 20180807 |