CN107396247A - Noise reduction sound arrester, noise reduction sound insulation circuit and noise reduction sound insulation circuit design method - Google Patents
Noise reduction sound arrester, noise reduction sound insulation circuit and noise reduction sound insulation circuit design method Download PDFInfo
- Publication number
- CN107396247A CN107396247A CN201710741160.5A CN201710741160A CN107396247A CN 107396247 A CN107396247 A CN 107396247A CN 201710741160 A CN201710741160 A CN 201710741160A CN 107396247 A CN107396247 A CN 107396247A
- Authority
- CN
- China
- Prior art keywords
- noise reduction
- reduction sound
- noise
- sound insulation
- loudspeaker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000009467 reduction Effects 0.000 title claims abstract description 203
- 238000009413 insulation Methods 0.000 title claims abstract description 111
- 238000000034 method Methods 0.000 title claims abstract description 55
- 238000013461 design Methods 0.000 title claims abstract description 29
- 238000013016 damping Methods 0.000 claims abstract description 25
- 230000005540 biological transmission Effects 0.000 claims description 42
- 238000006243 chemical reaction Methods 0.000 claims description 24
- 238000012545 processing Methods 0.000 claims description 11
- 230000008054 signal transmission Effects 0.000 claims description 3
- 230000003860 sleep quality Effects 0.000 abstract description 7
- 230000017531 blood circulation Effects 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 3
- 230000006870 function Effects 0.000 description 31
- 230000015654 memory Effects 0.000 description 10
- 230000008569 process Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000004891 communication Methods 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052754 neon Inorganic materials 0.000 description 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2430/00—Signal processing covered by H04R, not provided for in its groups
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention provides a kind of noise reduction sound arrester, noise reduction sound insulation circuit and noise reduction sound insulation circuit design method, by with noise reduction sound proofing enclosure, microphone, space where people is divided into spatial noise and noise damping space by the noise reduction sound arrester of loudspeaker and noise reduction sound insulation circuit, and pillow can be placed in noise damping space, the user's head in sleep is set to be located in above-mentioned noise damping space, compared with correlation technique by way of earplug or earmuff carry out noise reduction sound insulation, earplug is filled in without user or is avoided with earmuff can in sleep procedure by external interference, it ensure that sleep quality；And avoid the defects of caused ear's poor blood circulation, people hardly enter deep sleep and Hearing when carrying out noise reduction sound insulation by earplug or earmuff.
Description
Technical field
The present invention relates to sound processing techniques field, in particular to a kind of noise reduction sound arrester, noise reduction sound insulation circuit
And noise reduction sound insulation circuit design method.
Background technology
At present, present people's pressure is increasing, it is necessary to which a comfortable environment could fall asleep, it is accordingly required in particular to a peace
Quiet, dim light environment.And under current conditions, it is usually unable to obtain good sleep environment.Especially present population is more and more,
Vehicle is also more and more, the flicker of evening neon light, causes noise effect people to rest, lamp especially on night, road also one
Straight light yellow, reduce sleep quality.So the bad people of sleep can take the means of noise reduction sound insulation to ensure before sleep
Sleep is not disturbed.
In correlation technique, noise reduction sound insulation means that the people that sleep bad use, typically worn on ear earplug or
Earmuff, to carry out noise reduction sound insulation by earplug or earmuff, ensure the sleep state of oneself.
In process of the present invention is realized, inventor has found that at least there are the following problems in the prior art：
When carrying out noise reduction sound insulation by earplug or earmuff, earplug plug overlong time in ear can cause ear's blood to follow
Ring is not smooth, people is hardly entered deep sleep, and can so cause Hearing for a long time；Having on earmuff sleep can not only make
People feel uncomfortable, and easily people are waken up when side is slept, so as to reduce the sleep quality of people.
The content of the invention
In view of this, the purpose of the embodiment of the present invention be to provide a kind of noise reduction sound arrester, noise reduction sound insulation circuit and
Noise reduction sound insulation circuit design method, to ensure the sleep quality of people.
In a first aspect, the embodiments of the invention provide a kind of noise reduction sound arrester, including：Noise reduction sound proofing enclosure, Duo Gemai
Gram wind, loudspeaker and noise reduction sound insulation circuit；
Each microphone in multiple microphones is separately positioned on the outside of noise reduction sound proofing enclosure, and the loudspeaker is arranged on
On the inside of noise reduction sound proofing enclosure；The noise reduction sound insulation circuit is arranged on inside the noise reduction sound proofing enclosure；
Each microphone is connected with the noise reduction sound insulation circuit respectively, and the noise reduction sound insulation circuit connects with the loudspeaker
Connect；
The noise reduction sound proofing enclosure, for the space on the outside of the noise reduction sound proofing enclosure to be defined as into spatial noise, and will
Space on the inside of the noise reduction sound proofing enclosure is defined as noise damping space；The noise damping space, for placing pillow, make in sleep
User's head is located in the noise damping space；
The microphone, it is sent to for gathering the noise signal of the spatial noise, and by the noise signal collected
Noise reduction sound insulation circuit；
The noise reduction sound insulation circuit, for carrying out noise reduction sound insulation processing to the noise signal, noise cancellation signal is obtained, and will
The obtained noise cancellation signal is sent to the loudspeaker；
The loudspeaker, for playing noise cancellation signal in the noise damping space.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the first of first aspect, wherein：Institute
It is curved to state noise reduction sound proofing enclosure.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of second of first aspect, wherein：Also
Including：It is arranged on the pillow support plate of the noise reduction sound proofing enclosure bottom；
The pillow support plate, for placing pillow.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the third of first aspect, wherein：Root
Ear position after being lain low according to user, it is in place that the loudspeaker is arranged on the ear institute on the inside of the noise reduction sound proofing enclosure
The corresponding position put.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the 4th of first aspect kind, wherein：Respectively
The microphone is arranged on the cross central line on the outside of the noise reduction sound proofing enclosure；The quantity of the microphone is no less than institute
State the quantity of loudspeaker.
Second aspect, the embodiments of the invention provide a kind of noise reduction sound insulation circuit, applies in above-mentioned noise reduction sound arrester
In, including：Analog to digital conversion circuit, filter circuit and the D/A converting circuit being sequentially connected；
Analog-digital conversion circuit as described, also it is connected respectively with each microphone, the noise signal for being gathered to microphone is carried out
Analog-to-digital conversion, and give the noise signal transmission after analog-to-digital conversion to the filter circuit；
The filter circuit, for carrying out noise reduction sound insulation processing to the noise signal after analog-to-digital conversion, noise cancellation signal is obtained,
And the obtained noise cancellation signal is transferred to the D/A converting circuit；
The D/A converting circuit, also it is connected with the loudspeaker, for carrying out digital-to-analogue conversion to the noise cancellation signal, and
Noise cancellation signal after digital-to-analogue conversion is transferred to the loudspeaker.
The third aspect, the embodiments of the invention provide a kind of noise reduction sound insulation circuit design method, for designing above-mentioned drop
Make an uproar sound insulation circuit, including：
Obtain the first noise signal of each microphone collection in noise reduction sound arrester；
Obtain the second noise signal of the de-noising point；Wherein, the de-noising point is located on the inside of the noise reduction sound proofing enclosure
The center position of noise damping space；
According to first noise signal and second noise signal got, the transmission of noise reduction sound insulation circuit is obtained
Function；
According to the transmission function of noise reduction sound insulation circuit and the quantity of loudspeaker, the noise cancellation signal that loudspeaker exports is determined, with
Noise reduction sound insulation circuit is designed by obtained noise cancellation signal.
With reference to the third aspect, the embodiments of the invention provide the possible embodiment of the first of the third aspect, wherein：Root
According to first noise signal and second noise signal got, the transmission function of noise reduction sound insulation circuit is obtained, including：
According to first noise signal and second noise signal got, pass through the side of linear least squares method class
Method establishes each microphone to the first electric transmission function of the de-noising point respectively；
Establish the second electric transmission function of loudspeaker in the noise reduction sound arrester；
According to the described first electric transmission function and the second electric transmission function, the noise reduction sound insulation circuit is obtained
Transmission function.
With reference to the third aspect, the embodiments of the invention provide the possible embodiment of second of the third aspect, wherein：Build
The second electric transmission function of loudspeaker in the noise reduction sound arrester is found, including：
To the loudspeaker transmitting telecommunication number so that the loudspeaker sends out output signal；
Obtain the output signal that the loudspeaker is sent；
According to the electric signal and the output signal, the loudspeaker is established by the method for linear least squares method class
Second electric transmission function.
With reference to the third aspect, the embodiments of the invention provide the possible embodiment of the third of the third aspect, wherein：Drop
Make an uproar the transmission function of sound insulation circuit
Wherein, n represents the quantity of microphone, and G1, G2 ... Gn represent that each microphone electrically transmits letter to the first of de-noising point
Number, S represent the second electric transmission function, and Wt1, Wt2 ... Wtn represent the weight letter of the first electric transmission function of each microphone
Number.
Noise reduction sound arrester, noise reduction sound insulation circuit and noise reduction sound insulation circuit design method provided in an embodiment of the present invention,
Will be empty where people by the noise reduction sound arrester with noise reduction sound proofing enclosure, microphone, loudspeaker and noise reduction sound insulation circuit
Between be divided into spatial noise and noise damping space, and pillow can be placed in noise damping space, make the user's head in sleep positioned at upper
State in noise damping space, compared with correlation technique by way of earplug or earmuff carry out noise reduction sound insulation, filled in without user
Earplug avoids ensure that sleep quality by external interference in sleep procedure with earmuff can；And avoid and pass through ear
Caused ear's poor blood circulation, people hardly enter deep sleep and hearing when plug or earmuff carry out noise reduction sound insulation
The defects of decline.
To enable the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by embodiment it is required use it is attached
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore be not construed as pair
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 shows the knot on the inside of a kind of noise reduction sound proofing enclosure for noise reduction sound arrester that the embodiment of the present invention 1 is provided
Structure schematic diagram；
Fig. 2 shows the knot on the outside of a kind of noise reduction sound proofing enclosure for noise reduction sound arrester that the embodiment of the present invention 1 is provided
Structure schematic diagram；
Fig. 3 shown in a kind of noise reduction sound arrester that the embodiment of the present invention 1 is provided, the specific knot of noise reduction sound insulation circuit
Structure schematic diagram；
Fig. 4 shows the executive agent server for the noise reduction sound insulation circuit design method that the embodiment of the present invention 2 is provided
Structural representation；
Fig. 5 shown in the noise reduction sound insulation circuit design method that the embodiment of the present invention 2 is provided, the survey of noise reduction sound insulation circuit
The schematic diagram of examination hall scape；
Fig. 6 shows the flow chart for the noise reduction sound insulation circuit design method that the embodiment of the present invention 2 is provided.
Icon：100- noise reduction sound proofing enclosures；102- microphones；104- loudspeakers；106- pillow support plates；300- analog-to-digital conversions
Circuit；302- filter circuits；304- D/A converting circuits；200- servers；201- memories；202- processors；203- networks
Module；221- operating systems；222- service modules.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
Middle accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only
It is part of the embodiment of the present invention, rather than whole embodiments.The present invention being generally described and illustrated herein in the accompanying drawings is real
Applying the component of example can be configured to arrange and design with a variety of.Therefore, it is of the invention to what is provided in the accompanying drawings below
The detailed description of embodiment is not intended to limit the scope of claimed invention, but is merely representative of the selected reality of the present invention
Apply example.Based on embodiments of the invention, institute that those skilled in the art are obtained on the premise of creative work is not made
There is other embodiment, belong to the scope of protection of the invention.
At present, the noise reduction sound insulation means that the people for sleeping bad use, typically wear earplug or earmuff on ear, with
Noise reduction sound insulation is carried out by earplug or earmuff, ensures the sleep state of oneself.Noise reduction sound insulation is carried out by earplug or earmuff
When, earplug plug overlong time in ear can cause ear's poor blood circulation, people is hardly entered deep sleep, Er Qiechang
Phase can so cause Hearing；Having on earmuff sleep not only can make people feel uncomfortable, and easily handle when side is slept
People wakes up, so as to reduce the sleep quality of people.Based on this, a kind of noise reduction sound arrester of the application offer, noise reduction sound insulation
Circuit and noise reduction sound insulation circuit design method.
It should be noted that in the description of the invention, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Be easy to the description present invention and simplify description, rather than instruction or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that instruction or hint relative importance.
In addition, in the description of the invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " company
Connect " it should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or it is integrally connected；It can be machine
Tool connects or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, can be two members
Connection inside part.For the ordinary skill in the art, above-mentioned term can be understood in the present invention with concrete condition
Concrete meaning.
Embodiment 1
Referring to the inner side of noise reduction sound proofing enclosure 100 of the noise reduction sound arrester shown in Fig. 1-2 and the structural representation in outside,
The present embodiment proposes a kind of noise reduction sound arrester, including：Noise reduction sound proofing enclosure 100, multiple microphones 102, loudspeaker 104 and
Noise reduction sound insulation circuit (not shown).
Each microphone 102 in multiple above-mentioned microphones 102 is separately positioned on the outside of noise reduction sound proofing enclosure 100, above-mentioned to raise
Sound device 104 is arranged on the inner side of noise reduction sound proofing enclosure 100；Above-mentioned noise reduction sound insulation circuit is arranged in above-mentioned noise reduction sound proofing enclosure 100
Portion.
Each above-mentioned microphone 102 is connected with above-mentioned noise reduction sound insulation circuit respectively, and above-mentioned noise reduction sound insulation circuit is raised one's voice with above-mentioned
Device 104 connects.
Above-mentioned noise reduction sound proofing enclosure 100, for the space in the above-mentioned outside of noise reduction sound proofing enclosure 100 to be defined as into noise sky
Between, and the space of the above-mentioned inner side of noise reduction sound proofing enclosure 100 is defined as noise damping space；Above-mentioned noise damping space, for placing pillow,
The user's head in sleep is set to be located in above-mentioned noise damping space.
Above-mentioned microphone 102, sent for gathering the noise signal of above-mentioned spatial noise, and by the noise signal collected
To noise reduction sound insulation circuit.Multiple microphones are set in noise reduction sound arrester, can more accurately measurement noise signal, contribute to
The foundation of noise transmission model.
In one embodiment, the signal in the outside of noise reduction sound proofing enclosure 100 of noise reduction sound arrester shown in Figure 2
Figure, each above-mentioned microphone 102 are arranged on the cross central line (dotted line in Fig. 2) in the above-mentioned outside of noise reduction sound proofing enclosure 100；
And the quantity of above-mentioned microphone is no less than the quantity of above-mentioned loudspeaker.
When being provided with 3 microphones 102 in noise reduction sound arrester, the quantity of loudspeaker can only at most have 3.
Above-mentioned noise reduction sound insulation circuit, for carrying out noise reduction sound insulation processing to above-mentioned noise signal, noise cancellation signal is obtained, and will
Obtained above-mentioned noise cancellation signal is sent to above-mentioned loudspeaker 104.
Above-mentioned loudspeaker 104, for playing noise cancellation signal in above-mentioned noise damping space.
In one embodiment, the structure of the inner side of noise reduction sound proofing enclosure 100 of noise reduction sound arrester as shown in Figure 1 is shown
It is intended to, 2 or multiple loudspeakers is placed in the inner side of noise reduction sound proofing enclosure 100 of noise reduction sound arrester, can more comprehensively accurately
Eliminate noise.
In one embodiment, noise reduction sound arrester is provided with 2 loudspeakers 104.
Preferably, can be according to ergonomics, ear position after being lain low according to user, by 2 above-mentioned loudspeakers
104 are arranged on the corresponding position of the above-mentioned ear position in the above-mentioned inner side of noise reduction sound proofing enclosure 100.It ensure that user uses drop
Make an uproar the comfortableness used of sound arrester.
The above-mentioned drop of the above-mentioned inner side of noise reduction sound proofing enclosure 100 can be fully located in order to ensure the head of user in sleep
Make an uproar in space, ensure that noise reduction sound arrester has good sound insulation and noise reduction effect in use, as shown in figure 1, above-mentioned drop
Sound proofing enclosure 100 of making an uproar is curved.
Certainly, noise reduction sound proofing enclosure 100 can also use other to have the shape of good sound insulation and noise reduction effect, here no longer
Repeat one by one.
In order to preferably allow user place pillow in noise reduction sound arrester, the noise reduction sound insulation that the present embodiment proposes fills
Put, in addition to：It is arranged on the pillow support plate 106 of the above-mentioned bottom of noise reduction sound proofing enclosure 100.Above-mentioned pillow support plate 106, for placing
Pillow.
After the structure and composition of noise reduction sound arrester is described by above content, by herein below to drop
Make an uproar the composition of sound arrester and function is described further.
The structural representation of noise reduction sound insulation circuit shown in Figure 3, the present embodiment also propose a kind of noise reduction sound insulation circuit,
Apply in above-mentioned noise reduction sound arrester, the noise reduction sound insulation circuit includes：The analog to digital conversion circuit 300 that is sequentially connected, filtered electrical
Road 302 and D/A converting circuit 304.
Above-mentioned analog to digital conversion circuit 300, is also connected respectively with each microphone, for entering to the noise signal that microphone gathers
Row analog-to-digital conversion, and give the noise signal transmission after analog-to-digital conversion to above-mentioned filter circuit.
Above-mentioned filter circuit 302, for carrying out noise reduction sound insulation processing to the noise signal after analog-to-digital conversion, obtain de-noising letter
Number, and obtained above-mentioned noise cancellation signal is transferred to above-mentioned D/A converting circuit 304.
Above-mentioned D/A converting circuit 304, is also connected with above-mentioned loudspeaker, turns for carrying out digital-to-analogue to above-mentioned noise cancellation signal
Change, and the noise cancellation signal after digital-to-analogue conversion is transferred to above-mentioned loudspeaker.
Analog to digital conversion circuit 300, filter circuit 302 and D/A converting circuit 304 can be respectively adopted existing any
Analog-to-digital conversion, filtering and the chip of digital-to-analogue conversion or integrated circuit can be realized, is no longer repeated one by one here.
In summary, the noise reduction sound arrester and noise reduction sound insulation circuit that the present embodiment provides, outside with noise reduction sound insulation
Shell, microphone, loudspeaker and noise reduction sound insulation circuit noise reduction sound arrester by space where people be divided into spatial noise and
Noise damping space, and pillow can be placed in noise damping space, makes the user's head in sleep be located in above-mentioned noise damping space, and related
Compared in technology by way of earplug or earmuff carry out noise reduction sound insulation, earplug is filled in or with earmuff can without user
Avoid ensure that sleep quality by external interference in sleep procedure；And avoid by earplug or earmuff carry out noise reduction every
The defects of caused ear's poor blood circulation, people hardly enter deep sleep and Hearing during sound.
Embodiment 2
The present embodiment proposes a kind of noise reduction sound insulation circuit design method, for design the noise reduction of the proposition of above-described embodiment 1 every
Sound circuit, the executive agent of above-mentioned noise reduction sound insulation circuit design method is server.
Fig. 4 shows kind of a structured flowchart for the server that can be applied to above-mentioned noise reduction sound insulation circuit design method.Such as Fig. 4 institutes
Show, server 200 includes：Memory 201, processor 202 and mixed-media network modules mixed-media 203.
Specifically, memory 201 can be used for storage software program and module, such as the noise reduction sound insulation circuit in the present embodiment
Programmed instruction/module corresponding to design method, processor 202 by operation be stored in software program in memory 201 and
Module, so as to perform various function application and data processing, that is, realize the noise reduction sound insulation circuit design side that the present embodiment proposes
Method.Memory 201 may include high speed random access memory, may also include nonvolatile memory, as one or more magnetic is deposited
Storage device, flash memory or other non-volatile solid state memories.Further, above-mentioned software program and module may also include：
Operating system 221 and service module 222.Wherein operating system 221, such as can be LINUX, UNIX, WINDOWS, it can be wrapped
Include the various component softwares for management system task (such as memory management, storage device control, power management etc.) and/or drive
It is dynamic, and can mutually be communicated with various hardware or component software, so as to provide the running environment of other software component.Service module
222 operate on the basis of operating system 221, and are monitored by the network service of operating system 221 come the request of automatic network, root
Corresponding data processing is completed according to request, and returns to result to client.That is, service module 222 is used for visitor
Family end provides network service.
Mixed-media network modules mixed-media 203 is used to receiving and sending network signal.Above-mentioned network signal may include wireless signal or have
Line signal.
It is appreciated that structure shown in Fig. 4 is only to illustrate, server 200 may also include than shown in Fig. 4 more or more
Few component, or there is the configuration different from shown in Fig. 4.Each component shown in Fig. 4 can use hardware, software or its group
Close and realize.In addition, above-mentioned server can also include the child servers of multiple specific difference in functionalitys.
In order that server can determine the design standard of noise reduction sound insulation circuit, it is necessary to be filled according to server and noise reduction sound insulation
Put the test scene for building noise reduction sound insulation circuit.
The schematic diagram of the test scene of noise reduction sound insulation circuit shown in Figure 5, in test scene, in sound arrester of making an uproar
The outside of noise reduction sound proofing enclosure 100 be provided with 3 microphones 102, and at a certain distance from the outside of noise reduction sound proofing enclosure 100
Sound source is set.
Above-mentioned sound source is connected with server, for playing back noise caused by server in test process.
Server is connected with each microphone in sound arrester of making an uproar respectively, and noise reduction is determined by experiment in noise damping space
De-noising point in space, the noise gathering module being connected with server is set at de-noising point, to gather the noise at de-noising point.
Server can also be connected with the loudspeaker in sound arrester of making an uproar (not shown in Fig. 5), so as to by detection,
The transmission function of loudspeaker is determined, moreover, server can be the de-noising letter in test process to being obtained after noise signal processing
Number it is delivered in loudspeaker, so as to play the noise cancellation signal in test process by loudspeaker, to measure de-noising effect.
Above-mentioned noise gathering module, the equipment that microphone or recording pen etc. can be used to be acquired to noise,
Here no longer repeat one by one.
The flow chart of noise reduction sound insulation circuit design method shown in Figure 6, the noise reduction sound insulation circuit that the present embodiment proposes
Design method comprises the following steps：
Step 600, the first noise signal for obtaining each microphone collection in noise reduction sound arrester.
Step 602, the second noise signal for obtaining above-mentioned de-noising point.
Wherein, above-mentioned de-noising point is located at the center position of noise damping space on the inside of above-mentioned noise reduction sound proofing enclosure.
Above-mentioned first noise signal and above-mentioned second noise signal that step 604, basis are got, obtain noise reduction sound insulation electricity
The transmission function on road.
Specifically, above-mentioned steps 604 comprise the following steps (1) to step (3)：
(1) according to above-mentioned first noise signal and above-mentioned second noise signal got, linear least squares method class is passed through
Method establish each microphone respectively to the first electric transmission function of above-mentioned de-noising point；
(2) the second electric transmission function of loudspeaker in above-mentioned noise reduction sound arrester is established；
(3) according to the above-mentioned first electric transmission function and above-mentioned second electric transmission function, above-mentioned noise reduction sound insulation electricity is obtained
The transmission function on road.
Wherein, above-mentioned steps (2) specifically include following steps (21) to step (23)：
(21) to above-mentioned loudspeaker transmitting telecommunication number so that above-mentioned loudspeaker sends out output signal.
(22) the above-mentioned output signal that above-mentioned loudspeaker is sent is obtained.
(23) according to above-said current signal and above-mentioned output signal, above-mentioned raise one's voice is established by the method for linear least squares method class
Second electric transmission function of device.
The transmission function of above-mentioned noise reduction sound insulation circuit
Wherein, n represents the quantity of microphone, and G1, G2 ... Gn represent that each microphone electrically transmits letter to the first of de-noising point
Number, S represent the second electric transmission function, and Wt1, Wt2 ... Wtn represent the weight letter of the first electric transmission function of each microphone
Number.
Step 606, according to the transmission function of noise reduction sound insulation circuit and the quantity of loudspeaker, determine the de-noising of loudspeaker output
Signal, to be designed by obtained noise cancellation signal to noise reduction sound insulation circuit.
Specifically, the noise cancellation signal of loudspeaker input is：H/m.Wherein, m represents the quantity of loudspeaker.
In summary, the noise reduction sound insulation circuit design method that the present embodiment provides, it is each in noise reduction sound arrester by obtaining
First noise signal of microphone collection and the second noise signal of de-noising point obtain the transmission function of noise reduction sound insulation circuit,
And according to the transmission function of noise reduction sound insulation circuit and the quantity of loudspeaker, the noise cancellation signal that loudspeaker exports is determined, with by obtaining
To noise cancellation signal noise reduction sound insulation circuit is designed, so as to by shirtsleeve operation be assured that noise reduction sound insulation circuit
Design specification, and the noise reduction sound insulation circuit for making to design has good noise reduction soundproof effect.
The computer program product for the progress noise reduction sound insulation circuit design method that the embodiment of the present invention is provided, including storage
The computer-readable recording medium of program code, the instruction that described program code includes can be used for performing previous methods embodiments
Described in method, specific implementation can be found in embodiment of the method, will not be repeated here.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, the corresponding process in preceding method embodiment is may be referred to, will not be repeated here.
In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, can be with
Realize by another way.Device embodiment described above is only schematical, for example, the division of the unit,
Only a kind of division of logic function, can there is other dividing mode when actually realizing, in another example, multiple units or component can
To combine or be desirably integrated into another system, or some features can be ignored, or not perform.It is another, it is shown or beg for
The mutual coupling of opinion or direct-coupling or communication connection can be by some communication interfaces, device or unit it is indirect
Coupling or communication connection, can be electrical, mechanical or other forms.
The unit illustrated as separating component can be or may not be physically separate, show as unit
The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can also
That unit is individually physically present, can also two or more units it is integrated in a unit.
If the function is realized in the form of SFU software functional unit and is used as independent production marketing or in use, can be with
It is stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially in other words
The part to be contributed to prior art or the part of the technical scheme can be embodied in the form of software product, the meter
Calculation machine software product is stored in a storage medium, including some instructions are causing a computer equipment (can be
People's computer, server, or network equipment etc.) perform all or part of step of each embodiment methods described of the present invention.
And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-OnlyMemory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with the medium of store program codes.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (10)
- A kind of 1. noise reduction sound arrester, it is characterised in that including：Noise reduction sound proofing enclosure, multiple microphones, loudspeaker and noise reduction Sound insulation circuit；Each microphone in multiple microphones is separately positioned on the outside of noise reduction sound proofing enclosure, and the loudspeaker is arranged on noise reduction On the inside of sound proofing enclosure；The noise reduction sound insulation circuit is arranged on inside the noise reduction sound proofing enclosure；Each microphone is connected with the noise reduction sound insulation circuit respectively, and the noise reduction sound insulation circuit is connected with the loudspeaker；The noise reduction sound proofing enclosure, for the space on the outside of the noise reduction sound proofing enclosure to be defined as into spatial noise, and by described in Space on the inside of noise reduction sound proofing enclosure is defined as noise damping space；The noise damping space, for placing pillow, make the user in sleep Head is located in the noise damping space；The microphone, noise reduction is sent to for gathering the noise signal of the spatial noise, and by the noise signal collected Sound insulation circuit；The noise reduction sound insulation circuit, for carrying out noise reduction sound insulation processing to the noise signal, noise cancellation signal is obtained, and will obtain The noise cancellation signal be sent to the loudspeaker；The loudspeaker, for playing noise cancellation signal in the noise damping space.
- 2. noise reduction sound arrester according to claim 1, it is characterised in that the noise reduction sound proofing enclosure is curved.
- 3. noise reduction sound arrester according to claim 1, it is characterised in that also include：It is arranged on outside the noise reduction sound insulation The pillow support plate of shell bottom；The pillow support plate, for placing pillow.
- 4. noise reduction sound arrester according to claim 1, it is characterised in that ear position after being lain low according to user, The loudspeaker is arranged on to the corresponding position of the ear position on the inside of the noise reduction sound proofing enclosure.
- 5. noise reduction sound arrester according to claim 1, it is characterised in that each microphone is arranged at the noise reduction On cross central line on the outside of sound proofing enclosure；The quantity of the microphone is no less than the quantity of the loudspeaker.
- 6. a kind of noise reduction sound insulation circuit, apply in the noise reduction sound arrester described in the claims any one of 1-5, its feature It is, including：Analog to digital conversion circuit, filter circuit and the D/A converting circuit being sequentially connected；Analog-digital conversion circuit as described, also it is connected respectively with each microphone, the noise signal for being gathered to microphone carries out modulus Conversion, and give the noise signal transmission after analog-to-digital conversion to the filter circuit；The filter circuit, for carrying out noise reduction sound insulation processing to the noise signal after analog-to-digital conversion, noise cancellation signal is obtained, and will The obtained noise cancellation signal is transferred to the D/A converting circuit；The D/A converting circuit, also it is connected with the loudspeaker, for carrying out digital-to-analogue conversion to the noise cancellation signal, and number Noise cancellation signal after mould conversion is transferred to the loudspeaker.
- A kind of 7. noise reduction sound insulation circuit design method, for designing the noise reduction sound insulation circuit described in the claims 6, its feature It is, including：Obtain the first noise signal of each microphone collection in noise reduction sound arrester；Obtain the second noise signal of de-noising point；Wherein, the de-noising point is located on the inside of noise reduction sound proofing enclosure in noise damping space Heart opening position；According to first noise signal and second noise signal got, the transmission letter of noise reduction sound insulation circuit is obtained Number；According to the transmission function of noise reduction sound insulation circuit and the quantity of loudspeaker, the noise cancellation signal that loudspeaker exports is determined, to pass through Obtained noise cancellation signal is designed to noise reduction sound insulation circuit.
- 8. noise reduction sound insulation circuit design method according to claim 7, it is characterised in that according to described first got Noise signal and second noise signal, obtain the transmission function of noise reduction sound insulation circuit, including：According to first noise signal and second noise signal got, pass through the method point of linear least squares method class Each microphone is not established to the first electric transmission function of the de-noising point；Establish the second electric transmission function of loudspeaker in the noise reduction sound arrester；According to the described first electric transmission function and the second electric transmission function, the transmission of the noise reduction sound insulation circuit is obtained Function.
- 9. noise reduction sound insulation circuit design method according to claim 8, it is characterised in that establish the noise reduction sound arrester Second electric transmission function of middle loudspeaker, including：To the loudspeaker transmitting telecommunication number so that the loudspeaker sends out output signal；Obtain the output signal that the loudspeaker is sent；According to the electric signal and the output signal, the second of the loudspeaker is established by the method for linear least squares method class Electric transmission function.
- 10. the noise reduction sound insulation circuit design method according to claim 7 or 8, it is characterised in that noise reduction sound insulation circuit Transmission functionWherein, n represents the quantity of microphone, and G1, G2 ... Gn represent each microphone to the first electric transmission function of de-noising point, S The second electric transmission function is represented, Wt1, Wt2 ... Wtn represent the weighting function of the first electric transmission function of each microphone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710741160.5A CN107396247A (en) | 2017-08-25 | 2017-08-25 | Noise reduction sound arrester, noise reduction sound insulation circuit and noise reduction sound insulation circuit design method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710741160.5A CN107396247A (en) | 2017-08-25 | 2017-08-25 | Noise reduction sound arrester, noise reduction sound insulation circuit and noise reduction sound insulation circuit design method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107396247A true CN107396247A (en) | 2017-11-24 |
Family
ID=60345207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710741160.5A Pending CN107396247A (en) | 2017-08-25 | 2017-08-25 | Noise reduction sound arrester, noise reduction sound insulation circuit and noise reduction sound insulation circuit design method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107396247A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108810719A (en) * | 2018-08-29 | 2018-11-13 | 歌尔科技有限公司 | A kind of noise-reduction method, neckstrap formula earphone and storage medium |
| CN109360548A (en) * | 2018-12-07 | 2019-02-19 | 中船第九设计研究院工程有限公司 | A kind of ship's space active noise reduction system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10171466A (en) * | 1996-12-12 | 1998-06-26 | Sumitomo Electric Ind Ltd | Active noise controller |
| JP2010083267A (en) * | 2008-09-30 | 2010-04-15 | Panasonic Corp | Noise reduction device |
| JP2013065039A (en) * | 2012-12-07 | 2013-04-11 | Sony Corp | Headphone, headphone noise reduction method and program for noise reduction processing |
| CN104581604A (en) * | 2013-10-17 | 2015-04-29 | 奥迪康有限公司 | Method for reproducing acoustical sound field |
| CN106210962A (en) * | 2016-09-22 | 2016-12-07 | 会听声学科技（北京）有限公司 | A kind of ear stricture of vagina acoustic characteristic ONLINE RECOGNITION method and system being applicable to noise cancelling headphone design |
| CN106575499A (en) * | 2014-08-01 | 2017-04-19 | 伯斯有限公司 | System and method of microphone placement for noise attenuation |
-
2017
- 2017-08-25 CN CN201710741160.5A patent/CN107396247A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10171466A (en) * | 1996-12-12 | 1998-06-26 | Sumitomo Electric Ind Ltd | Active noise controller |
| JP2010083267A (en) * | 2008-09-30 | 2010-04-15 | Panasonic Corp | Noise reduction device |
| JP2013065039A (en) * | 2012-12-07 | 2013-04-11 | Sony Corp | Headphone, headphone noise reduction method and program for noise reduction processing |
| CN104581604A (en) * | 2013-10-17 | 2015-04-29 | 奥迪康有限公司 | Method for reproducing acoustical sound field |
| CN106575499A (en) * | 2014-08-01 | 2017-04-19 | 伯斯有限公司 | System and method of microphone placement for noise attenuation |
| CN106210962A (en) * | 2016-09-22 | 2016-12-07 | 会听声学科技（北京）有限公司 | A kind of ear stricture of vagina acoustic characteristic ONLINE RECOGNITION method and system being applicable to noise cancelling headphone design |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108810719A (en) * | 2018-08-29 | 2018-11-13 | 歌尔科技有限公司 | A kind of noise-reduction method, neckstrap formula earphone and storage medium |
| CN109360548A (en) * | 2018-12-07 | 2019-02-19 | 中船第九设计研究院工程有限公司 | A kind of ship's space active noise reduction system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107808657B (en) | Design system and method of active noise reduction earphone | |
| US10085091B2 (en) | Ambient volume modification through environmental microphone feedback loop system and method | |
| EP3456259A1 (en) | Method, apparatus, and computer program for adjusting a hearing aid device | |
| CN102342834A (en) | Portable hearing testing and hearing-aid testing and matching integrated system | |
| CN107396247A (en) | Noise reduction sound arrester, noise reduction sound insulation circuit and noise reduction sound insulation circuit design method | |
| CN107548563A (en) | System and method for adjusting auditory prosthesis setting | |
| CN202342040U (en) | Portable integrated system for hearing tests and hearing aid fitting | |
| CN112637724B (en) | Earphone noise reduction method, system and storage medium | |
| CN110051347A (en) | A kind of user's sleep detection method and system | |
| CN106941637A (en) | A kind of method, system and the earphone of self adaptation active noise reduction | |
| US8996120B1 (en) | Methods and systems of adjusting one or more perceived attributes of an audio signal | |
| CN105323682B (en) | A kind of digital-analog hybrid microphone and earphone | |
| CN106790400A (en) | Auscultation method and its system | |
| DK2688637T3 (en) | Wireless audio signal monitor output for the hearing implant system | |
| CN110972018A (en) | Method and system for carrying out transparent transmission on earphone and earphone | |
| CN104800029A (en) | Funeral interaction experience coffin and novel queuing system applied to experience coffin | |
| CN107333226A (en) | Indoor moving cognitive method, device, computer-readable medium and electronic equipment | |
| CN114584908B (en) | Acoustic testing method, device and equipment for hearing aid | |
| CN115527517A (en) | Indoor noise reduction system, method, device, equipment and readable storage medium | |
| CN210227657U (en) | Feedback type noise reduction pillow | |
| CN207251895U (en) | A kind of noise reduction sound arrester and noise reduction sound insulation system | |
| CN110992922B (en) | Noise reduction communication method and device for wireless earphone in aircraft service test environment | |
| CN115278429A (en) | Earphone system, earphone box, earphone and control method thereof | |
| CN107948834A (en) | A kind of distribution sound equipment | |
| DE102016219511A1 (en) | Head-worn unit with a connector to a neural interface |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171124 |
|
| WD01 | Invention patent application deemed withdrawn after publication |