CN109246513A - A kind of active noise reduction earphone and its noise-reduction method, device - Google Patents
A kind of active noise reduction earphone and its noise-reduction method, device Download PDFInfo
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- CN109246513A CN109246513A CN201811160112.8A CN201811160112A CN109246513A CN 109246513 A CN109246513 A CN 109246513A CN 201811160112 A CN201811160112 A CN 201811160112A CN 109246513 A CN109246513 A CN 109246513A
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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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- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention discloses a kind of active noise reduction earphone and its noise-reduction method, device, this method includes obtaining the current wearing state of earphone, and the wearing state of earphone includes non-wearing, standard is worn and non-standard wearing；When the current wearing state of earphone is non-standard wearing, output voltage is reduced, to reduce the signal strength of music signal and thermal compensation signal.The application is monitored by the wearing state current to earphone, and when the current wearing state of earphone is non-standard wearing, namely wear when sealing state it is bad when, output voltage can be reduced, to reduce the signal strength of music signal and thermal compensation signal, to further decrease the noise occurred when loudspeaker play music, be conducive to the usage experience for improving user.
Description
Technical field
The present embodiments relate to active noise reduction techniques fields, more particularly to a kind of active noise reduction earphone and its noise reduction side
Method, device.
Background technique
With the continuous improvement of people's living standards, requirement of the people to quality of life is also continuously improved.Currently, in life
There is noises everywhere, and in order to enable people to when enjoying music not by extraneous noise jamming, active noise reduction earphone is big
Amount uses.
Active noise reduction earphone is divided into feed forward type and two kinds of reaction type, wherein the active noise reduction of reaction type active noise reduction earphone
Microphone (ANC MIC) is set in ante-chamber, and ANC MIC picks up the noise in ante-chamber, by the filtering in active noise reduction system
After device filtering, ante-chamber inversion signal is generated so that loudspeaker issue reverse phase voice signal and offset to noise.
Active noise reduction earphone (as shown in Figure 1) in the prior art is during playing music, ANC (i.e. master in Fig. 1
Dynamic noise reduction system) signal for arriving 01 ante-chamber of loudspeaker is picked up, music signal is sent in ANC by master chip, and ANC is before to loudspeaker 01
When the signal of chamber is handled, the low frequency part of music signal can also be eliminated, so can be mended by music in design
Circuit (being designed inside master chip) is repaid to compensate the part offset by ANC, even if also active noise reduction system is exported to loudspeaker 01
Electric signal include treated music signal, inversion signal and thermal compensation signal in ante-chamber.But compensation circuit is based on actively
What noise cancelling headphone designed under normal wearing state, when the wearing of active noise reduction earphone is not tight, in the ante-chamber that ANC MIC is picked up
Noise signal reduce, so that ANC is lower in the noise reduction of low frequency, compensation circuit generate thermal compensation signal it is constant, entire ANC system
The music signal of trumpet end can be amplified, more than the maximum output of ANC chip and the rated power of loudspeaker, loudspeaker be caused to play
Sound in there is noise, influence the usage experience of user.
In consideration of it, how to provide it is a kind of solve above-mentioned technical problem active noise reduction earphone and its noise-reduction method, device at
For the current problem to be solved of those skilled in the art.
Summary of the invention
The purpose of the embodiment of the present invention is that a kind of active noise reduction earphone and its noise-reduction method, device are provided, in use process
In the noise that occurs when loudspeaker play music can be reduced when earphone is in non-standard wearing state, be conducive to improve user's
Usage experience.
In order to solve the above technical problems, the embodiment of the invention provides a kind of noise-reduction methods of active noise reduction earphone, comprising:
Obtain the current wearing state of earphone, the wearing state of the earphone include it is non-wear, standard is worn and non-standard
It wears；
When the current wearing state of the earphone be non-standard wearing when, reduce output voltage, with reduce music signal and
The signal strength of thermal compensation signal.
Optionally, the process for reducing output voltage are as follows:
The regulated quantity of output voltage is determined according to the loudspeaker front end electric signal of the earphone and the maximum voltage value of loudspeaker；
Reduction adjusting is carried out to the output voltage according to the regulated quantity.
Optionally, further includes:
When the current wearing state of the earphone is non-wearing, control active noise reduction system is closed.
Optionally, the process for obtaining the current wearing state of earphone are as follows:
Receive the detection signal that each pressure sensor being set to inside the ear muff of the earphone is sent；
The current wearing state of the earphone is determined according to each detection signal and preset pressure value.
Optionally, each pressure sensor is uniformly distributed in inside the ear muff.
Optionally, described to determine the current wearing state of the earphone according to each detection signal and preset pressure value
Process are as follows:
According to each detection signal acquisition and the one-to-one pressure value of each detection signal；
Judge whether each pressure value is respectively less than the preset pressure value, if so, the wearing that the earphone is current
State is no wearing；Otherwise, judge whether each pressure value reaches the preset pressure value, if so, the earphone
Current wearing state is standard wearing, and otherwise, the current wearing state of the earphone is non-standard wearing.
The embodiment of the present invention provides a kind of denoising device of active noise reduction earphone accordingly, comprising:
Module is obtained, for obtaining the current wearing state of earphone, the wearing state of the earphone includes non-wearing, standard
It wears and non-standard wearing；；
Adjustment module, for reducing output voltage when the current wearing state of the earphone is non-standard wearing, with drop
The signal strength of bass music signal and thermal compensation signal.
Optionally, the adjustment module includes:
Computing unit, for the loudspeaker when the current wearing state of the earphone is non-standard wearing, according to the earphone
The maximum voltage value of front end electric signal and the loudspeaker determines the regulated quantity of output voltage；
Unit is adjusted, for carrying out reduction adjusting to the output voltage according to the regulated quantity.
Optionally, further includes:
Closedown module, for when the current wearing state of the earphone is non-wearing, control active noise reduction system to be closed.
The embodiment of the invention provides a kind of active noise reduction earphones, comprising:
Memory, for storing computer program；
Processor realizes the noise-reduction method of active noise reduction earphone as described above when for executing the computer program
Step.
The embodiment of the invention provides a kind of active noise reduction earphone and its noise-reduction methods, device, comprising: it is current to obtain earphone
Wearing state, the wearing state of earphone include it is non-wear, standard wear and non-standard wearing；When the current wearing state of earphone
When for non-standard wearing, output voltage is reduced, to reduce the signal strength of music signal and thermal compensation signal.
As it can be seen that the application is monitored by the wearing state current to earphone, and when the current wearing state of earphone is
When non-standard wearing, namely wear when sealing state it is bad when, output voltage can be reduced, to reduce music signal and compensation
The signal strength of signal is conducive to the usage experience for improving user to further decrease the noise occurred when loudspeaker play music.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to institute in the prior art and embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structural schematic diagram of existing active noise reduction earphone；
Fig. 2 is a kind of flow diagram of the noise-reduction method of active noise reduction earphone provided in an embodiment of the present invention；
Fig. 3 is a kind of structural schematic diagram of active noise reduction earphone provided in an embodiment of the present invention；
Fig. 4 is a kind of structural schematic diagram of the denoising device of active noise reduction earphone provided in an embodiment of the present invention.
Specific embodiment
The embodiment of the invention provides a kind of active noise reduction earphone and its noise-reduction methods, device, in use can
Loudspeaker are reduced when earphone is in non-standard wearing state and play the noise occurred when music, and be conducive to raising user uses body
It tests.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Referring to figure 2., Fig. 2 is a kind of process signal of noise-reduction method of active noise reduction earphone provided in an embodiment of the present invention
Figure.This method, comprising:
S110: obtaining the current wearing state of earphone, the wearing state of earphone include it is non-wear, standard is worn and non-standard
It wears；
It should be noted that one kind is the wearing state of non-wearing there are three types of earphone wearing states in use,
Namely user does not wear earphone, the wearing state namely user worn one is standard have correctly worn earphone, and earphone is worn
Well, the wearing state namely user that another criteria of right and wrong is worn adorn oneself with earphone, but earphone wearing is not tight.The application
It is monitored by the corresponding monitoring device wearing state current to earphone, and then obtains the current wearing state of earphone, and
Corresponding operation is carried out according to current specific wearing state, specifically the process can be executed by the master chip in earphone.
Wherein, the process of the current wearing state of above-mentioned acquisition earphone can be with are as follows: reception is set to inside the ear muff of earphone
The detection signal that sends of each pressure sensor, and determine the current pendant of earphone according to each detection signal and preset pressure value
Wear state.
Specifically, can be by being set to each pressure sensor inside the ear muff of earphone come the wearing current to earphone
State is monitored, since each pressure sensor is set to inside ear muff, so ear muff is by crowded when user wears earphone
Pressure, pressure sensor is under pressure, and obtains detecting signal accordingly, and each pressure sensor believes the detection respectively detected
Number it is sent to master chip, master chip can be according to each detection signal acquisition and the one-to-one pressure value of each detection signal；
Judge whether each pressure value is respectively less than preset pressure value, if so, the current wearing state of earphone is no wearing；Otherwise, sentence
Whether each pressure value of breaking reaches preset pressure value, if so, the current wearing state of earphone is that standard is worn, otherwise, ear
The current wearing state of machine is non-standard wearing.
That is, illustrating that earphone is in non-pendant when each pressure sensor corresponding pressure value is respectively less than preset pressure value
State is worn, when each sensor corresponding pressure value reaches and (be more than or equal to) preset pressure value, illustrates that earphone is in standard
Wearing state (namely normal wearing state), when a part of sensor corresponding pressure value reaches preset pressure value, another part
When pressure sensor corresponding pressure value is lower than preset pressure value, illustrate that earphone is in non-standard wearing state, namely do not have at this time
There is wearing tight.
The pressure value as detected by pressure sensor can accurately react the stress condition of ear muff corresponding position,
Therefore by the pressure value of multiple sensors can accurate detection go out the wearing state of earphone, and pressure sensor volume it is small,
It is at low cost, therefore the wearing state of earphone is detected using pressure sensor in the application, it can be ensured that accuracy in detection, and
Be conducive to save the cost.
In addition, in order to accurately get the current wearing state of earphone, each pressure sensing for being set to inside ear muff
Device can be uniformly distributed, such as shown in Fig. 3, wherein 31 in Fig. 3 indicate ear muff, and 32 indicate pressure sensor.Certainly, this Shen
Please in be not limited only to be monitored the wearing state of earphone using pressure sensor, can also be realized using other devices,
The application is specifically without limitation.
S120: when the current wearing state of earphone be non-standard wearing when, reduce output voltage, with reduce music signal and
The signal strength of thermal compensation signal.
It should be noted that not having when the current wearing state of earphone is non-standard wearing namely when user wears earphone
It wears, causes earphone to wear not tight, the sound signal intensity for the earphone ante-chamber that ANC MIC is picked up at this time reduces, actively
Low frequency noise reduction when noise reduction system handles the voice signal is lower, so when reduce master chip output voltage (
That is the maximum output of master chip) it can reduce master chip and export signal to the music signal of active noise reduction system and thermal compensation signal
Intensity exports active noise reduction system to the maximum voltage reduction of the electric signal of loudspeaker, so as to alleviate or even earphone is avoided to wear
When wearing good, there is the case where noise in the music that loudspeaker play.
Wherein, the process of above-mentioned reduction output voltage is specifically as follows:
The regulated quantity of output voltage is determined according to the loudspeaker front end electric signal of earphone and the maximum voltage value of loudspeaker；Foundation
Regulated quantity carries out reduction adjusting to output voltage.
Wherein, loudspeaker front end electric signal is electric signal received by loudspeaker, and is made a sound according to the electric signal, namely
The loudspeaker front end electric signal is converted to voice signal by loudspeaker.For example, the maximum voltage value of loudspeaker front end electric signal is 0dBV, loudspeaker
Maximum voltage value (namely loudspeaker can bear maximum voltage value) is -2dBV, then can be by the output voltage of master chip
2dB is reduced on the basis of current output voltage, it certainly, can be by the defeated of master chip in order to further avoid the appearance of noise
Voltage reduces by 3~5dB on the basis of current output voltage out namely the regulated quantity of output voltage can also be in the model of a~b dB
In enclosing, wherein a is the difference of the maximum voltage value of loudspeaker front end electric signal and the maximum voltage value of loudspeaker, the adjusting of output voltage
The specific value of amount can be determined according to the actual situation, and the application does not do particular determination.
Further, this method further includes:
When the current wearing state of earphone is non-wearing, control active noise reduction system is closed.That is, user does not have at this time
Earphone is worn, active noise reduction system (ANC) closing can be automatically controlled, to save electric energy.Certainly, if the current wearing shape of earphone
State is standard wearing, then needs to maintain ANC in the open state, to realize active noise reduction, provide the music of high tone quality for user.
The embodiment of the invention provides a kind of noise-reduction methods of active noise reduction earphone, including obtaining the current wearing shape of earphone
State, the wearing state of earphone includes non-wearing, standard is worn and non-standard wearing；When the current wearing state of earphone is non-standard
When wearing, output voltage is reduced, to reduce the signal strength of music signal and thermal compensation signal.As it can be seen that the application passes through to earphone
Current wearing state is monitored, and when the current wearing state of earphone is non-standard wearing, namely seal shape when wearing
When state is bad, output voltage can be reduced, so that the signal strength of music signal and thermal compensation signal is reduced, to further decrease loudspeaker
The noise occurred when broadcasting music, is conducive to the usage experience for improving user.
On the basis of the above embodiments, the embodiment of the present invention provides a kind of noise reduction dress of active noise reduction earphone accordingly
It sets, specifically referring to figure 4..The device includes:
Module 41 is obtained, for obtaining the current wearing state of earphone, the wearing state of earphone includes non-wearing, standard pendant
It wears and non-standard wearing；
Adjustment module 42, for reducing output voltage when the current wearing state of earphone is non-standard wearing, to reduce
The signal strength of music signal and thermal compensation signal.
Further, adjustment module 42 includes:
Computing unit, for the loudspeaker front end electricity when the current wearing state of earphone is non-standard wearing, according to earphone
The maximum voltage value of signal and loudspeaker determines the regulated quantity of output voltage；
Unit is adjusted, for carrying out reduction adjusting to output voltage according to regulated quantity.
Further, the device further include:
Closedown module, for when the current wearing state of earphone is non-wearing, control active noise reduction system to be closed.
It should be noted that the denoising device of active noise reduction earphone provided in the embodiment of the present invention has and above-mentioned reality
The identical beneficial effect of noise-reduction method for applying active noise reduction earphone provided in example, to master involved in this present embodiment
The specific introduction of the noise-reduction method of dynamic noise cancelling headphone please refers to above method embodiment, and details are not described herein by the application.
On the basis of the above embodiments, the embodiment of the invention provides a kind of active noise reduction earphones, comprising:
Memory, for storing computer program；
Processor, when for executing computer program the step of the realization such as noise-reduction method of above-mentioned active noise reduction earphone.
For example, the processor in the present embodiment is for realizing the current wearing state of earphone is obtained, wearing state includes non-
It wears, standard is worn and non-standard wearing；When wearing state is non-standard wearing, output voltage is reduced, to reduce music letter
Number and thermal compensation signal signal strength.
On the basis of the above embodiments, the embodiment of the invention provides a kind of computer readable storage medium, computers
It is stored with computer program on readable storage medium storing program for executing, such as above-mentioned active noise reduction earphone is realized when computer program is executed by processor
Noise-reduction method the step of.
The computer readable storage medium may include: USB flash disk, mobile hard disk, read-only memory (Read-Only
Memory, ROM), random access memory (Random Access Memory, RAM), magnetic or disk etc. is various to deposit
Store up the medium of program code.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For device disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part
It is bright.
It should also be noted that, in the present specification, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes that
A little elements, but also including other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of noise-reduction method of active noise reduction earphone characterized by comprising
The current wearing state of earphone is obtained, the wearing state of the earphone includes non-wearing, standard is worn and non-standard wearing；
When the current wearing state of the earphone is non-standard wearing, output voltage is reduced, to reduce music signal and compensation
The signal strength of signal.
2. the noise-reduction method of active noise reduction earphone according to claim 1, which is characterized in that the reduction output voltage
Process are as follows:
The regulated quantity of output voltage is determined according to the loudspeaker front end electric signal of the earphone and the maximum voltage value of loudspeaker；
Reduction adjusting is carried out to the output voltage according to the regulated quantity.
3. the noise-reduction method of active noise reduction earphone according to claim 1, which is characterized in that further include:
When the current wearing state of the earphone is non-wearing, control active noise reduction system is closed.
4. the noise-reduction method of active noise reduction earphone according to claim 1 to 3, which is characterized in that the acquisition
The process of the current wearing state of earphone are as follows:
Receive the detection signal that each pressure sensor being set to inside the ear muff of the earphone is sent；
The current wearing state of the earphone is determined according to each detection signal and preset pressure value.
5. the noise-reduction method of active noise reduction earphone according to claim 4, which is characterized in that each pressure sensor
It is uniformly distributed in inside the ear muff.
6. the noise-reduction method of active noise reduction earphone according to claim 4, which is characterized in that described according to each inspection
It surveys signal and preset pressure value determines the process of the current wearing state of the earphone are as follows:
According to each detection signal acquisition and the one-to-one pressure value of each detection signal；
Judge whether each pressure value is respectively less than the preset pressure value, if so, the wearing state that the earphone is current
For no wearing；Otherwise, judge whether each pressure value reaches the preset pressure value, if so, the earphone is current
Wearing state be standard wear, otherwise, the current wearing state of the earphone be non-standard wearing.
7. a kind of denoising device of active noise reduction earphone characterized by comprising
Module is obtained, for obtaining the current wearing state of earphone, the wearing state of the earphone includes non-wearing, standard wearing
With non-standard wearing；；
Adjustment module, for output voltage being reduced, to reduce sound when the current wearing state of the earphone is non-standard wearing
The signal strength of music signal and thermal compensation signal.
8. the denoising device of active noise reduction earphone according to claim 7, which is characterized in that the adjustment module includes:
Computing unit, for when the current wearing state of the earphone is non-standard wearing, before the loudspeaker according to the earphone
The maximum voltage value of end electric signal and the loudspeaker determines the regulated quantity of output voltage；
Unit is adjusted, for carrying out reduction adjusting to the output voltage according to the regulated quantity.
9. the denoising device of active noise reduction earphone according to claim 7, which is characterized in that further include:
Closedown module, for when the current wearing state of the earphone is non-wearing, control active noise reduction system to be closed.
10. a kind of active noise reduction earphone characterized by comprising
Memory, for storing computer program；
Processor realizes the active noise reduction earphone as described in claim 1 to 6 any one when for executing the computer program
Noise-reduction method the step of.
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| WO2023070920A1 (en) * | 2021-10-28 | 2023-05-04 | 歌尔科技有限公司 | Earphone frequency response calibration method and apparatus, and earphone device and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023070920A1 (en) * | 2021-10-28 | 2023-05-04 | 歌尔科技有限公司 | Earphone frequency response calibration method and apparatus, and earphone device and storage medium |
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