CN205829933U - Many miaows head is used to eliminate the device of noise - Google Patents
Many miaows head is used to eliminate the device of noise Download PDFInfo
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- CN205829933U CN205829933U CN201620143403.6U CN201620143403U CN205829933U CN 205829933 U CN205829933 U CN 205829933U CN 201620143403 U CN201620143403 U CN 201620143403U CN 205829933 U CN205829933 U CN 205829933U
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- sound
- miaow head
- noise reduction
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- frequency
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Abstract
A kind of device using many miaows head to eliminate noise, including the first miaow head, the first miaow head is for receiving the first acoustical signal；Second miaow head, the second miaow head is used for receiving second sound signal；Wave volume in first acoustical signal and second sound signal is contrasted by volume contrast module, and the first noise reduction module carries out volume noise reduction process to the first acoustical signal and second sound signal；Memory module is for storing sound frequency when people speaks, sound frequency in the sound frequency of storage and the first acoustical signal and second sound signal is contrasted by frequency contrast module, and the first acoustical signal and second sound signal are carried out frequency noise reduction process by the second noise reduction module.This utility model is owing to have employed the first miaow head and the second miaow head, first noise reduction module and the second noise reduction module carry out volume noise reduction process and frequency noise reduction process to the first acoustical signal and second sound signal respectively, the advantage such as have simple in construction, production cost is low, noise reduction efficacy is high and tonequality will not change.
Description
Technical field
This utility model relates to noise cancellation technique field, especially relates to a kind of dress using many miaows head to eliminate noise
Put.
Background technology
In commercial production and daily life, often there is the environment that noise is excessive, the noise of these environment not only can damage
Victimize audition, but also normal talking and the communication of people can be disturbed.Such as, compare at bar or KTV etc. as people
When saying phone in noisy environment, noise and user voice will together enter in call miaow head, i.e. miaow head can receive simultaneously
To noise and user voice.In order to solve this problem, a kind of denoising device that can converse of people's utility model, this knot
The principle of the denoising device of structure is, when call, is obtained the frequency of noise by noise samples module, then output one with make an uproar
The frequency of sound is identical, act in agreement and the sound wave of opposite in phase, makes the sound wave of noise and output interfere and cancel out each other, this
Sample has just reached to eliminate the purpose of noise.But the denoising device of this structure has, and structure is complicated, production cost is high, noise reduction effect
The problems such as rate is low and tonequality can change.
Utility model content
In order to overcome the problems referred to above, this utility model provides to society that a kind of simple in construction, production cost be low, noise reduction efficacy
What high and tonequality will not change uses the device of many miaows head elimination noise.
A kind of technical scheme of the present utility model is: provide a kind of device using many miaows head to eliminate noise, including:
More than one first miaow head, described first miaow head is for receiving the first acoustical signal from first direction；
More than one second miaow head, described second miaow head is for receiving from the second party different with described first direction
To second sound signal；
Volume contrast module and the first noise reduction module being electrically connected with described volume contrast module, described volume contrast mould
Wave volume in described first acoustical signal and described second sound signal is contrasted by block, and described first noise reduction module will
The acoustical signal that described first acoustical signal is identical with volume in described second sound signal carries out volume noise reduction process；
Memory module, frequency contrast module and the second noise reduction module being electrically connected with successively, described memory module is used for depositing
Storage people sound frequency when speaking, described frequency contrast module for will storage sound frequency and described first acoustical signal and
Sound frequency in described second sound signal contrasts, and described second noise reduction module is by described first acoustical signal and described
Second sound signal medium frequency sound outside the audio frequency range of storage carries out frequency noise reduction process.
In opposite direction as to improvement of the present utility model, described first direction and described second direction.
Mould is contrasted with described volume respectively as to improvement of the present utility model, described first miaow head and described second miaow head
Block is electrically connected with, and described first noise reduction module is electrically connected with described frequency contrast module.
As to improvement of the present utility model, described first miaow head and described second miaow head respectively with described frequency contrast mould
Block is electrically connected with, and described second noise reduction module is electrically connected with described volume contrast module.
As to improvement of the present utility model, also include sound shield shell, described first miaow head and described second miaow head
It is arranged in described sound shield shell.
As to improvement of the present utility model, also include the first sound inlet and the second sound inlet, described first sound inlet pair
Should be arranged on described sound shield shell by described first direction, the corresponding described second direction of described second sound inlet is arranged on institute
State on sound shield shell.
As to improvement of the present utility model, when people speaks, audio frequency range is greater than equal to 65 hertz to being less than or equal to
Between 1100 hertz.
As to improvement of the present utility model, described first miaow head is or/and described second miaow head is carbon grain formula miaow head, electricity
Magnetic-type miaow head, condenser type miaow head, electret capacitor type miaow head, piezo crystal miaow head, piezoelectric ceramic type miaow head are or/and titanium dioxide
Silicon formula miaow head.
This utility model is owing to have employed the first miaow head and the second miaow head, and the first miaow head is used for receiving the first acoustical signal,
Second miaow head is used for receiving second sound signal, and the first noise reduction module and the second noise reduction module are respectively to the first acoustical signal and
Two acoustical signals carry out volume noise reduction process and frequency noise reduction process, after volume noise reduction process and frequency noise reduction process, and base
Just noise can be eliminated in basis, make the user voice after noise reduction will not distortion, sound and becoming apparent from, have structure letter
The advantages such as list, production cost is low, noise reduction efficacy is high and tonequality will not change.
Accompanying drawing explanation
Fig. 1 is the workflow schematic diagram of a kind of embodiment of the present utility model.
Fig. 2 is the workflow schematic diagram of another kind of embodiment of the present utility model.
Fig. 3 is the structural representation of embodiment shown in Fig. 1.
Fig. 4 is the structural representation of embodiment shown in Fig. 2.
Wherein: 1. sound shield shell；11. first sound inlets；12. second sound inlets；21. first miaow heads；22. second miaows
Head；3. volume contrast module；4. the first noise reduction module；5. memory module；6. frequency contrast module；7. the second noise reduction module.
Detailed description of the invention
In description of the present utility model, it is to be understood that " " center ", " on ", D score in term, "front", "rear",
Orientation or the position relationship of the instruction such as "left", "right" are based on orientation shown in the drawings or position relationship, are for only for ease of and retouch
State this utility model and simplifying describe rather than instruction or the hint device of indication or element must have specific orientation, with
Specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.Additionally, term " first ", " second "
It is only used for describing purpose, and it is not intended that indicate or hint relative importance.
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", should be interpreted broadly " connection ", " being connected ", connect for example, it may be fixing, it is also possible to be to dismantle connection, or connect integratedly
Connect；Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be to be indirectly connected to by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Language is at concrete meaning of the present utility model.Additionally, in description of the present utility model, except as otherwise noted, " multiple ", " some "
It is meant that two or more.
This utility model provides a kind of method using many miaows head to eliminate noise, flow chart shown in Figure 1, bag
Include:
Step 101: receive the first acoustical signal from first direction；
Step 102: receive the second sound signal from the second direction different with described first direction；
Step 103: the wave volume in described first acoustical signal and described second sound signal contrasts, by described
The acoustical signal that first acoustical signal is identical with volume in described second sound signal carries out volume noise reduction process；
Step 104: storage people sound frequency when speaking, the sound frequency of storage and described first acoustical signal and described
Sound frequency in second sound signal contrasts, and described first acoustical signal and described second sound signal medium frequency is existed
Sound outside the audio frequency range of storage carries out frequency noise reduction process.
In this method, described first direction and described second direction in opposite direction, user's one's voice in speech is just to described
First direction.Between when people speaks, audio frequency range is greater than arriving less than or equal to 1100 hertz equal to 65 hertz.
In this method, owing to noise is to transmit from afar, described first acoustical signal and the biography of described second sound signal
It is defeated apart from identical, so the noise ration in described first acoustical signal is basic with the noise ration in described second sound signal
Identical.It is to say, when the wave volume base in the wave volume in described first acoustical signal with described second sound signal
When this is identical, then it is believed that this sound is exactly noise.
Owing to distance when user speaks is relatively near, i.e. user's one's voice in speech transmits from nearby, and described first
The transmission direction of acoustical signal is different with the transmission direction of described second sound signal, described first acoustical signal and described second
The transmission range of acoustical signal differs, so the user voice volume in described first acoustical signal and described rising tone message
User voice volume in number differs.It is to say, when the wave volume in described first acoustical signal and the described rising tone
When wave volume in tone signal differs, then it is believed that this sound is exactly user voice.
In this method, noise reduction process includes volume noise reduction process and frequency noise reduction process, and frequency noise reduction process is mainly pin
To the noise in frequency not audio frequency range when people speaks, after volume noise reduction process and frequency noise reduction process, base
Just can be eliminated by noise in basis, noise reduction process refers to filter noise processed.
In this method, can first carry out volume decrease and make an uproar process, carry out again at frequency noise reduction after volume noise reduction process completes
Reason.
In this method, it is also possible to advanced line frequency noise reduction process, after frequency noise reduction process completes, carry out volume noise reduction again
Process, shown in Figure 2.
In this method, also include that distance enlarging mechanism, described distance enlarging mechanism increase described first acoustical signal and institute
State the transmission range between second sound signal poor so that the user voice volume in described first acoustical signal and described second
The difference of the user voice volume in acoustical signal increases.
Referring to disclosed in Fig. 3, Fig. 3 is a kind of a kind of embodiment of device using many miaows head to eliminate noise, including:
More than one first miaow head 21, described first miaow head 21 is for receiving the first sound letter from first direction
Number；
More than one second miaow head 22, described second miaow head 22 is for receiving from different with described first direction the
The second sound signal in two directions；
Volume contrast module 3 and the first noise reduction module 4 being electrically connected with described volume contrast module 3, described volume pair
Than module 3, the wave volume in described first acoustical signal and described second sound signal is contrasted, described first noise reduction
The acoustical signal that described first acoustical signal is identical with volume in described second sound signal is carried out at volume noise reduction by module 4
Reason；
Memory module 5, frequency contrast module 6 and the second noise reduction module 7 being electrically connected with successively, described memory module 5 is used
Sound frequency in time storing people and speak, described frequency contrast module 6 is for the sound frequency that will store and described first sound
Sound frequency in signal and described second sound signal contrasts, and described second noise reduction module 7 is by described first sound letter
Number and described second sound signal medium frequency storage audio frequency range outside sound carry out frequency noise reduction process.
In the present embodiment, owing to noise is to transmit from afar, described first acoustical signal and described second sound signal
Transmission range is identical, so the noise ration in described first acoustical signal and the noise ration base in described second sound signal
This is identical.It is to say, when the wave volume in the wave volume in described first acoustical signal with described second sound signal
Time essentially identical, then it is believed that this sound is exactly noise.
Owing to distance when user speaks is relatively near, i.e. user's one's voice in speech transmits from nearby, and described first
The transmission direction of acoustical signal is different with the transmission direction of described second sound signal, described first acoustical signal and described second
The transmission range of acoustical signal differs, so the user voice volume in described first acoustical signal and described rising tone message
User voice volume in number differs.It is to say, when the wave volume in described first acoustical signal and the described rising tone
When wave volume in tone signal differs, then it is believed that this sound is exactly user voice, audio frequency range when people speaks
Between being greater than arriving less than or equal to 1100 hertz equal to 65 hertz.
In the present embodiment, noise reduction process includes volume noise reduction process and frequency noise reduction process, and frequency noise reduction process is mainly
For the noise in frequency not audio frequency range when people speaks, after volume noise reduction process and frequency noise reduction process,
The most just noise can be eliminated.
In the present embodiment, first carry out volume decrease and make an uproar process, after volume noise reduction process completes, carry out frequency noise reduction process again,
The most described first miaow head 21 and described second miaow head 22 are electrically connected with described volume contrast module 3 respectively, described first noise reduction
Module 4 is electrically connected with described frequency contrast module 6.
In the present embodiment, it is also possible to advanced line frequency noise reduction process, after frequency noise reduction process completes, carry out volume decrease again
Make an uproar process (shown in Figure 4), described first miaow head 21 and described second miaow head 22 respectively with described frequency contrast module 6 electricity
Property connect, described second noise reduction module 7 and described volume contrast module 3 and are electrically connected with.
In the present embodiment, also include that sound shield shell 1, described first miaow head 21 and described second miaow head 22 are arranged on institute
Stating in sound shield shell 1, the inwall of described sound shield shell 1 uses what sound-absorbing material was made.Also include that first enters
Sound hole 11 and the second sound inlet 12, the described first corresponding described first direction of sound inlet 11 is arranged on described sound shield shell 1
On, the described second corresponding described second direction of sound inlet 12 is arranged on described sound shield shell 1.
In the present embodiment, also including a demarcation strip (picture), described demarcation strip is by the inner chamber of described sound shield shell 1
Being divided into the first sub-inner chamber and the second sub-inner chamber, described first miaow head 21 is arranged in described first sub-inner chamber, described second miaow head
22 are arranged in described second sub-inner chamber, and so benefit of design is, described in order to prevent described first miaow head 21 from can receive
Second sound signal, prevents described second miaow head 22 from can receive described first acoustical signal.
In the present embodiment, described first miaow head 21 is or/and described second miaow head 22 is carbon grain formula miaow head, electromagnetic type miaow
Head, condenser type miaow head, electret capacitor type miaow head, piezo crystal miaow head, piezoelectric ceramic type miaow head are or/and silicon dioxide formula miaow
Head.
In the present embodiment, described first direction and described second direction in opposite direction, user's one's voice in speech is just to institute
Stating first direction, described first miaow head 21 and described second spaced a certain distance of miaow head 22, the so benefit of design is,
The user voice volume that the user voice volume making described first miaow head 21 receive receives more than described second miaow head 22.
In the present embodiment, also include that distance enlarging mechanism (picture), described distance enlarging mechanism increase described first sound
Transmission range between tone signal and described second sound signal is poor so that the user voice volume in described first acoustical signal
Increase with the difference of the user voice volume in described second sound signal.
Described distance enlarging mechanism includes screw mandrel, the manual toggle part that is arranged on described screw mandrel and being arranged on screw mandrel
Two nuts, described first miaow head 21 and described second miaow head 22 are separately positioned on two described nuts, described manual toggle
Part is synchronized with the movement with described screw mandrel.When stirring described manual toggle part with hands, the most described screw mandrel rotates, and two described nuts are to that
This near or away from each other direction motion, the distance between described first miaow head 21 and described second miaow head 22 reduce or
Increase.Described manual toggle part can replace with motor, say, that described motor drives described screw mandrel to rotate, and so has only to
Described motor just can regulate the distance between described first miaow head 21 and described second miaow head 22, also includes controlling switch, institute
State and control the work of motor described in on-off control.
In the present embodiment, also include micro wind turbine generator (picture), storage battery (picture) and with described storage
Battery be electrically connected with LED (picture), described micro wind turbine generator is arranged in described sound shield shell 1, when with
When described first sound inlet 11 is just spoken by family, the air-flow of generation will make the wheel rotation of described micro wind turbine generator, this
Micro wind turbine generator described in sample will generate electricity, and is stored by the electric current of generation in described storage battery, described LED
Will be luminous, the luminescence of described LED can be used to remind user, its direction spoken just to described first sound inlet 11, this
Sample can ensure that noise reduction.Described storage battery, described control switch and described motor are electrically connected with successively, described storage electricity
Pond be described control switch, described motor, described first miaow head 21, described second miaow head 22, described volume contrast module 3, institute
State the first noise reduction module 4, described memory module 5, described frequency contrast module 6 and described second noise reduction module 7 and electric energy is provided.
This utility model is owing to have employed described first miaow head 21 and described second miaow head 22, and described first miaow head 21 is used for
Receiving described first acoustical signal, described second miaow head 22 is used for receiving described second sound signal, described first noise reduction module 4
Respectively described first acoustical signal and described second sound signal are carried out with described second noise reduction module 7 volume noise reduction process and
Frequency noise reduction process, after volume noise reduction process and frequency noise reduction process, the most just can eliminate noise, make noise reduction
After user voice will not distortion, sound and becoming apparent from there is simple in construction, production cost is low, noise reduction efficacy is high and tonequality
The advantage such as will not change.
Claims (8)
1. one kind uses the device that many miaows head eliminates noise, it is characterised in that including:
More than one first miaow head, described first miaow head is for receiving the first acoustical signal from first direction；
More than one second miaow head, described second miaow head is for receiving from the second direction different with described first direction
Second sound signal；
Volume contrast module and the first noise reduction module being electrically connected with described volume contrast module, described volume contrast module pair
Wave volume in described first acoustical signal and described second sound signal contrasts, and described first noise reduction module is by described
The acoustical signal that first acoustical signal is identical with volume in described second sound signal carries out volume noise reduction process；
Memory module, frequency contrast module and the second noise reduction module being electrically connected with successively, described memory module is used for storing people
Sound frequency when speaking, described frequency contrast module is for will sound frequency and described first acoustical signal of storage and described
Sound frequency in second sound signal contrasts, and described second noise reduction module is by described first acoustical signal and described second
Acoustical signal medium frequency sound outside the audio frequency range of storage carries out frequency noise reduction process.
Employing many miaows head the most according to claim 1 eliminates the device of noise, it is characterised in that: described first direction and institute
State the in opposite direction of second direction.
Employing many miaows head the most according to claim 1 and 2 eliminates the device of noise, it is characterised in that: described first miaow head
It is electrically connected with described volume contrast module respectively with described second miaow head, described first noise reduction module and described frequency contrast mould
Block is electrically connected with.
Employing many miaows head the most according to claim 1 and 2 eliminates the device of noise, it is characterised in that: described first miaow head
Being electrically connected with described frequency contrast module respectively with described second miaow head, described second noise reduction module contrasts mould with described volume
Block is electrically connected with.
Employing many miaows head the most according to claim 1 and 2 eliminates the device of noise, it is characterised in that: also include sound screen
Cover housing, described first miaow head and described second miaow head to be arranged in described sound shield shell.
Employing many miaows head the most according to claim 5 eliminates the device of noise, it is characterised in that: also include the first sound inlet
With the second sound inlet, the corresponding described first direction of described first sound inlet is arranged on described sound shield shell, and described second
The corresponding described second direction of sound inlet is arranged on described sound shield shell.
Employing many miaows head the most according to claim 1 and 2 eliminates the device of noise, it is characterised in that: sound when people speaks
Between frequency range is greater than arriving less than or equal to 1100 hertz equal to 65 hertz.
Employing many miaows head the most according to claim 1 and 2 eliminates the device of noise, it is characterised in that: described first miaow head
Or/and described second miaow head is carbon grain formula miaow head, electromagnetic type miaow head, condenser type miaow head, electret capacitor type miaow head, piezo crystals
Body formula miaow head, piezoelectric ceramic type miaow head are or/and silicon dioxide formula miaow head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620143403.6U CN205829933U (en) | 2016-02-26 | 2016-02-26 | Many miaows head is used to eliminate the device of noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620143403.6U CN205829933U (en) | 2016-02-26 | 2016-02-26 | Many miaows head is used to eliminate the device of noise |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205829933U true CN205829933U (en) | 2016-12-21 |
Family
ID=58147544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620143403.6U Expired - Fee Related CN205829933U (en) | 2016-02-26 | 2016-02-26 | Many miaows head is used to eliminate the device of noise |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205829933U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105635866A (en) * | 2016-02-26 | 2016-06-01 | 深圳市优科威科技有限公司 | Method and device for removing noise by adopting multiple microphones |
| CN107659881A (en) * | 2017-09-30 | 2018-02-02 | 夏敬懿 | One kind orientation sound collector and orientation collection sound translator |
-
2016
- 2016-02-26 CN CN201620143403.6U patent/CN205829933U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105635866A (en) * | 2016-02-26 | 2016-06-01 | 深圳市优科威科技有限公司 | Method and device for removing noise by adopting multiple microphones |
| CN107659881A (en) * | 2017-09-30 | 2018-02-02 | 夏敬懿 | One kind orientation sound collector and orientation collection sound translator |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161221 Termination date: 20180226 |
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| CF01 | Termination of patent right due to non-payment of annual fee |