CN205566628U - Eliminate ambient noise's LED lamp and system - Google Patents
Eliminate ambient noise's LED lamp and system Download PDFInfo
- Publication number
- CN205566628U CN205566628U CN201521129443.7U CN201521129443U CN205566628U CN 205566628 U CN205566628 U CN 205566628U CN 201521129443 U CN201521129443 U CN 201521129443U CN 205566628 U CN205566628 U CN 205566628U
- Authority
- CN
- China
- Prior art keywords
- signal
- digital
- ambient noise
- analog
- led
- 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.)
- Expired - Fee Related
Links
Landscapes
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
The utility model provides an eliminate ambient noise's LED lamp and system, through the increase analog signal processing circuit in the intelligent LED lamp of speaker and microphone current, the signal conversion module, digital signal processor, ambient noise in order to gather the microphone enlargies, digital analog conversion, and generate the samely with the ambient noise frequency according to the ambient noise after handling, the range is the same, and the opposite signal of making an uproar that disappears of phase place, and offset the signal of making an uproar and carry out digital analog conversion, it launches to the space in through the speaker enlarge to handle the back. Make an uproar that the signal is the same with the ambient noise frequency, the range is the same and the phase place is opposite owing to disappear, disappear and make an uproar signal and ambient noise and cancel each other in the space to ambient noise has been eliminated through the LED lamp.
Description
Technical field
The utility model relates to noise cancellation technique, particularly relates to a kind of light emitting diode (light eliminating ambient noise
Emitting diode, is called for short LED) lamp and system.
Background technology
Noise, as one of main pollution in city, is present in each corner in city, affects or even jeopardize people
Study, work and live, therefore eliminate noise be always one of technical problem urgently to be resolved hurrily.
The mode generally eliminating noise includes passive de-noising (Passive Noise Control is called for short PNC) and actively disappears
Make an uproar (Active Noise Control is called for short ANC).Passive de-noising uses the methods such as sound absorption, sound insulation, silencer, by noise and
The interaction of acoustical material or structure is with sound energy consumption, but the inherent characteristic of sound causes passive de-noising only to have high-frequency noise
There is preferable noise reduction, and inconspicuous to low-frequency noise effect, the foam of such as earplug, it is impossible to the engine to hundreds of hertz
Noise effectively eliminates.And actively de-noising gathers primary noise source by sensor, use Digital Signal Processing generate with
Primary noise source frequency is identical, amplitude is identical, the secondary sound wave of opposite in phase, and secondary sound wave superposes with primary noise source, to reach
To the purpose reducing noise.Compared to passive noise reduction, active noise reduction has following features: one is initiative, can be according to the spy of noise
Property correspondingly changes the various characteristics of control system, makes to have the elimination of noise specific aim and Objective, and two is low-frequency noise
Control effective, compensate for the deficiency of passive de-noising.
There is a large amount of low-frequency noise, such as engine sound, blower noise, the various mechanical noise in building site in current life
Deng, but the most do not eliminate the Related product of ambient noise.
Utility model content
The utility model provides a kind of LED eliminating ambient noise and system, it is possible to eliminates environment by LED and makes an uproar
Sound.
First aspect of the present utility model provides a kind of LED eliminating ambient noise, including:
Power supply, LED luminescence component, analog signal processing circuit, signal conversion module, digital signal processor, at least one
Individual loudspeaker and at least one microphone, at least one loudspeaker described and at least one microphone described respectively with described simulation
First end of signal processing circuit connects, the second end of described analog signal processing circuit and the first of described signal conversion module
End connects, and the second end of described signal conversion module is connected with described digital signal processor；
Described power supply for for described LED luminescence component, described analog signal processing circuit, described signal conversion module,
Described digital signal processor, at least one loudspeaker described and at least one microphone power described；
Described LED luminescence component is used for illuminating；
At least one microphone described is used for gathering ambient noise, and the described ambient noise collected is sent to described
Analog signal processing circuit, described analog signal processing circuit is sent to described letter after being amplified described ambient noise
Number modular converter, the described signal conversion module described ambient noise after amplifying is sent to described after carrying out analog-to-digital conversion
Digital signal processor, described digital signal processor is made an uproar with described environment for generating according to the ambient noise after analog-to-digital conversion
Acoustic frequency is identical, amplitude is identical and the noise cancellation signal of opposite in phase, and described noise cancellation signal is sent to described signal modulus of conversion
Block, described signal conversion module is sent to described analog signal processing electricity after described noise cancellation signal is carried out digital-to-analogue conversion
Road, the noise cancellation signal after the conversion of described analog signal processing circuit logarithmic mode be sent to after being amplified described at least one raise one's voice
Device, at least one loudspeaker described described noise cancellation signal after amplifying is transmitted in space, makes an uproar eliminating described environment
Sound.
Optionally, described LED also includes:
Wireless communication module, is connected with described digital signal processor, for receiving its that eliminate in ambient noise system
The first de-noising feedback signal that his LED sends, described first de-noising feedback signal includes the environment after described LED de-noising
The frequency of noise, amplitude and phase place, described first de-noising feedback signal is that other LED described are after determining described LED de-noising
The ambient noise noise reduction that is unsatisfactory for presetting require that time sends to described LED；
The frequency of ambient noise, amplitude and phase place after described digital signal processor is additionally operable to according to described de-noising adjust
Any one in the frequency of described noise cancellation signal, amplitude and phase place or a combination thereof.
Optionally, described wireless communication module is additionally operable to the ambient noise after receiving other LED de-noisings described；
Described digital signal processor is additionally operable to whether the ambient noise after judging other LED de-noisings described meets described
The noise reduction requirement preset, when the ambient noise after other LED de-noisings described is unsatisfactory for described default noise reduction requirement, then root
Generate the second de-noising feedback signal according to the ambient noise after other LED de-noisings described, described second de-noising feedback signal is wrapped
Include the frequency of ambient noise, amplitude and the phase place after other LED de-noisings described.
Optionally, described analog signal processing circuit includes: at least one first amplification module and at least one second put
Big module, described signal conversion module includes: at least one analog-digital converter and at least one digital to analog converter, wherein, first
The number of amplification module, analog-digital converter number all identical with the number of microphone, the number of the second amplification module, digital-to-analogue turn
The number of parallel operation is all identical with the number of loudspeaker, each first amplification module first end connect a microphone, described often
Second end of individual first amplification module is connected with the first end of an analog-digital converter respectively, the second end of each analog-digital converter
Be connected with the first end of described digital signal processor respectively, the second end of described digital signal processor respectively with each digital-to-analogue
First end of converter connects, and the second end of described each digital to analog converter connects second amplification module, Mei Ge respectively
Two amplification modules connect a loudspeaker respectively；
Described each first amplification module is after the described ambient noise collecting the microphone connected is amplified
Being sent to the analog-digital converter connected, described each analog-digital converter turns for the described ambient noise after amplifying is carried out modulus
Described digital signal processor it is sent to after changing；
Described digital signal processor for described noise cancellation signal being sent respectively described each digital to analog converter, described often
Individual digital to analog converter is sent to the second amplification module connected after described noise cancellation signal is carried out digital-to-analogue conversion, described each
Second amplification module noise cancellation signal after logarithmic mode is changed is sent to the loudspeaker connected after being amplified.
Second aspect of the present utility model provides a kind of system eliminating ambient noise, the system of described elimination ambient noise
The LED provided including at least two first aspect the most of the present utility model.
The LED of the elimination ambient noise that the utility model provides and system, by including loudspeaker and wheat existing
The Intelligent LED lamp of gram wind increases analog signal processing circuit, signal conversion module, digital signal processor, with to microphone
The ambient noise collected is amplified, analog-to-digital conversion process, and generates and ambient noise frequency according to the ambient noise after processing
Rate is identical, amplitude is identical and the noise cancellation signal of opposite in phase, and noise cancellation signal is carried out digital-to-analogue conversion, amplification process after pass through
Loudspeaker is transmitted in space.Owing to noise cancellation signal is identical with ambient noise frequency, amplitude is identical and opposite in phase, de-noising is believed
Number and ambient noise cancel each other in space, thus eliminate ambient noise by LED.
Accompanying drawing explanation
The structural representation of the LED of the elimination ambient noise that Fig. 1 provides for the utility model embodiment one；
Fig. 2 shows the scene schematic diagram of a kind of LED for eliminating ambient noise；
The structural representation of a kind of LED eliminating ambient noise that Fig. 3 provides for the utility model embodiment two.
Description of reference numerals:
Power supply: 11；LED luminescence component: 12；
Analog signal processing circuit: 13；Signal conversion module: 14；
Digital signal processor: 15；Loudspeaker: 16；
Microphone: 17,18；First amplifying circuit: 131,132；
Second amplifying circuit: 133；Analog-digital converter: 141,142；
Digital to analog converter: 143.
Detailed description of the invention
The structural representation of the LED of the elimination ambient noise that Fig. 1 provides for the utility model embodiment one, such as Fig. 1 institute
Showing, the LED (hereinafter referred to as LED) of this elimination ambient noise may include that power supply 11, LED luminescence component 12, analog signal
Process circuit 13, signal conversion module 14, digital signal processor (digital signal processor, be called for short DSP) 15,
At least one loudspeaker 16 and at least one microphone 17, at least one microphone 17 is omni-directional and medium and low frequency frequency response
The microphone of curve smoothing.
Wherein, at least one loudspeaker 16 and at least one microphone 17 respectively with the first of analog signal processing circuit 13
End connects, and the second end of analog signal processing circuit 13 is connected with the first end of signal conversion module 14, signal conversion module 14
The second end be connected with digital signal processor 15, and power supply 11 the most respectively with LED luminescence component 12, analog signal processing electricity
Road 13, signal conversion module 14, digital signal processor 15, at least one loudspeaker 16 and at least one microphone 17 connect,
For powering other hardware modules in above-mentioned LED, Fig. 1 merely illustrates power supply 11 and LED luminescence component 12 and numeral letter
Number processor 15 connection diagram.It should be noted that analog signal processing circuit 13, signal conversion module 14 and data signal
Processor 15 can use independent element, it is also possible to analog signal processing circuit 13, signal conversion module 14 are integrated in number
On word signal processor 15, such power supply 11 can only connect, by digital signal processor 15 with digital signal processor 15
Power to analog signal processing circuit 13 and signal conversion module 14.
In the present embodiment, power supply 11 is used for as LED luminescence component 12, analog signal processing circuit 13, signal conversion module
14, digital signal processor 15, at least one loudspeaker 16 and at least one microphone 17 are powered, and LED luminescence component is used for shining
Bright, at least one microphone 17 is used for gathering ambient noise, and the ambient noise collected is sent to analog signal processing electricity
Road 13, analog signal processing circuit 13 is sent to signal conversion module 14 after being amplified ambient noise, and signal is changed
The module 14 ambient noise after amplifying is sent to digital signal processor 15, Digital Signal Processing after carrying out analog-to-digital conversion
Device 15 for according to the ambient noise after analog-to-digital conversion generate identical with ambient noise frequency, amplitude is identical and opposite in phase
Noise cancellation signal, and noise cancellation signal is sent to signal conversion module 14, signal conversion module 14 is for by noise cancellation signal number
Being sent to analog signal processing circuit 13 after mould conversion, the noise cancellation signal after the conversion of analog signal processing circuit 13 logarithmic mode is carried out
Being sent at least one loudspeaker 16 after amplification, at least one loudspeaker 16 noise cancellation signal after amplifying is transmitted into space
In, to eliminate ambient noise.
Owing to ambient noise frequency is concentrated mainly on medium and low frequency, for making microphone sample without distortion ambient noise, permissible
Use the microphone that omni-directional, sensitivity are moderate and medium and low frequency frequency response curve is smooth.Analog signal processing circuit 13 is used for
It is amplified analog signal processing, the environment that in the present embodiment, microphone 17 is collected by analog signal processing circuit 13 respectively
Noise and the noise cancellation signal launched by loudspeaker 16 are exaggerated process, but to ambient noise and the amplification of noise cancellation signal
Multiple is different, generally the multiplication factor of ambient noise is less than the multiplication factor to noise cancellation signal.Signal conversion module 14 is used for
Carrying out exporting after analog-to-digital conversion or digital-to-analogue conversion to the signal that receives received, analog-to-digital conversion is to convert analog signals into number
Word signal, digital-to-analogue conversion is to convert digital signals into analog signal, owing to digital signal processor 15 can only be to data signal
Process, therefore, the signal being sent to digital signal processor 15 and the signal sent from digital signal processor 15
It it is all numeral.Preferably, for making loudspeaker 16 export the noise cancellation signal of medium and low frequency without distortions, lowest resonance frequency can be selected
Within 100HZ, sensitivity is moderate, and rated power is moderate, and the loudspeaker of the pressure frequency response curve smoothing of medium and low frequency.Wheat
Gram wind and loudspeaker can use the existing microphone of LED and loudspeaker.
In the present embodiment, the ambient noise that microphone 17 collects is analog signal, and analog signal processing circuit 13 is to ring
Border noise is sent to signal conversion module 14 after amplifying, and it is right that ambient noise is converted to by signal conversion module 14 by analog-to-digital conversion
The data signal answered, and data signal corresponding for ambient noise is sent to digital signal processor 15, ambient noise is corresponding
Data signal carries the characteristic of ambient noise, and digital signal processor 15 is by dividing the data signal that ambient noise is corresponding
Analysis obtains the frequency of ambient noise, amplitude and phase place, then, generates and environment according to frequency, amplitude and the phase place of ambient noise
Noise frequency is identical, amplitude is identical and the noise cancellation signal of opposite in phase, and the noise cancellation signal that digital signal processor 15 generates is number
Word signal, noise cancellation signal is sent to signal conversion module 14 by digital signal processor 15, and signal conversion module 14 passes through digital-to-analogue
Noise cancellation signal is converted to the analog signal of correspondence by conversion, and analog signal corresponding for noise cancellation signal is sent at analog signal
Reason circuit 13, after analog signal corresponding for noise cancellation signal is amplified to the multiplication factor preset by analog signal processing circuit 13, sends out
Giving loudspeaker 16, the described noise cancellation signal after loudspeaker will amplify is transmitted in space, due to noise cancellation signal and ambient noise
Frequency identical, amplitude is identical and opposite in phase, after two kinds of signal superpositions in space, ambient noise can be offset, thus reach
Purpose to noise reduction.
Fig. 2 shows the scene schematic diagram of a kind of LED for eliminating ambient noise.As in figure 2 it is shown, path 1 is for making an uproar
The ambient noise that sound source produces is led to by the path of air borne to human ear process, the ambient noise that path 2 produces for noise source
Crossing the air borne path to the microphone of LED, path 3 is the signal trend inside LED processed ambient noise, and
The schematic diagram of the trend of the noise cancellation signal generated, noise cancellation signal is radiated in air for loudspeaker and travels to human ear by path 4
Path.So, travel to the noise cancellation signal of human ear by path 4 and to travel to the ambient noise of human ear by path 1 mutual
Offset, form dead zone, it is achieved that the purpose that ambient noise eliminates.In example shown in Fig. 2, by analog signal processing circuit and signal
Modular converter has been integrated in digital signal processor.
Further, LED can also include wireless communication module, and wireless communication module is with digital signal processor 15 even
Connecing, this LED is connected with the foundation of other LED by wireless communication module, then receives its in elimination ambient noise system
The first de-noising feedback signal that his LED sends, the first de-noising feedback signal includes the frequency of the ambient noise after LED de-noising
Rate, amplitude and phase place, the first de-noising feedback signal is that other LED ambient noise after determining LED de-noising is unsatisfactory for presetting
Noise reduction require time to LED send.Accordingly, the ambient noise after digital signal processor 15 is additionally operable to according to de-noising
Frequency, amplitude and phase place adjust any one in the frequency of noise cancellation signal, amplitude and phase place or a combination thereof.LED is in radiation
After noise cancellation signal, other LED also can gather ambient noise, and the ambient noise of the collections such as other LED is through this LED de-noising
After ambient noise, whether the ambient noise after other LED can judge to LED de-noising meets the noise reduction requirement preset, and this is pre-
If noise reduction require the amplitude of the ambient noise after for example, de-noising, when the ambient noise after LED de-noising is unsatisfactory for presetting
When noise reduction requires, other LED can send the first de-noising feedback signal to this LED, and this LED receives the first noise cancellation signal
After, any one parameter in the frequency of noise cancellation signal, amplitude and phase place or a combination thereof can be adjusted.Alternatively, radio communication mold
Block include but not limited to Wireless Fidelity (WIreless-Fidelity, be called for short WiFi) module, bluetooth module, Zigbee module,
2G/3G/4G module etc..
Further, wireless communication module is additionally operable to the ambient noise after receiving other LED de-noisings, Digital Signal Processing
Device 15 is additionally operable to whether the ambient noise after judging other LED de-noisings meets the noise reduction requirement preset, when other LED disappear
Ambient noise after making an uproar is unsatisfactory for the noise reduction requirement preset, then generate second according to the ambient noise after other LED de-noisings and disappear
Making an uproar feedback signal, the second de-noising feedback signal includes the frequency of ambient noise, amplitude and the phase place after other LED de-noisings,
So that other LED adjust the noise cancellation signal of oneself according to the second de-noising feedback signal.
The utility model embodiment two provides a kind of LED eliminating ambient noise, the LED of the present embodiment, is implementing
On the basis of LED shown in example one, analog signal processing circuit 13 includes: at least one first amplification module and at least one the
Two amplification modules, signal conversion module 14 includes: at least one analog-digital converter (analog to digital converter,
It is called for short ADC) and at least one digital to analog converter (digital to analog converter is called for short DAC), wherein, first puts
The big number of module, analog-digital converter number all identical with the number of microphone, the number of the second amplification module, digital-to-analogue conversion
The number of device is all identical with the number of loudspeaker, first end one microphone of connection of each first amplification module, and each first
Second end of amplification module is connected with the first end of an analog-digital converter respectively, the second end of each analog-digital converter respectively with
First end of digital signal processor connects, the second end of digital signal processor respectively with the first end of each digital to analog converter
Connecting, the second end of each digital to analog converter connects second amplification module respectively, and each second amplification module connects respectively
One loudspeaker.
Wherein, each first amplification module sends after the ambient noise collecting the microphone connected is amplified
Giving the analog-digital converter connected, each analog-digital converter is sent to number after the ambient noise after amplifying is carried out analog-to-digital conversion
Word signal processor 15, digital signal processor 15 for sending each digital to analog converter, each digital-to-analogue respectively by noise cancellation signal
Converter is sent to the second amplification module connected after noise cancellation signal is carried out digital-to-analogue conversion, and each second amplification module is used
Noise cancellation signal after logarithmic mode is changed is sent to the loudspeaker connected after being amplified.
The structural representation of a kind of LED eliminating ambient noise that Fig. 3 provides for the utility model embodiment two, such as figure
Shown in 3, this LED includes: power supply 11, LED luminescence component 12, analog signal processing circuit 13, signal conversion module 14, numeral
15, loudspeaker 16 of signal processor and two microphones 17,18, wherein, analog signal processing circuit 13 includes two
One amplifying circuit 131,132, and second amplifying circuit 133, signal conversion module 14 includes: two analog-digital converters
141,142 and a digital to analog converter 143, wherein, the first end of the first amplifying circuit 131 connects microphone 17, and first amplifies
First end of the second end connection mode number converter 141 of circuit 131, the second end of analog-digital converter 141 connects at data signal
First end of reason device 15, the first end of the first amplifying circuit 132 connects microphone 18, and the second end of the first amplifying circuit 132 is even
Connecing the first end of analog-digital converter 142, the second end of analog-digital converter 142 connects the first end of digital signal processor 15, number
First end of weighted-voltage D/A converter 143 connects the first end of digital signal processor 15, and the second end of digital to analog converter 143 connects second
First end of amplifying circuit 133, the second end of the second amplifying circuit 133 connects loudspeaker 16.
In order to improve de-noising effect further, in the environment several LED can be set more and set up one for eliminating
The system of ambient noise, the system of this elimination ambient noise at least includes two LED, and wherein, each LED can use
The LED that above-described embodiment is introduced.Assume that system includes two LED: the first LED and the second LED, two LED
Between can feed back mutually de-noising result by wireless module.
The utility model can utilize existing microphone and loudspeaker in current Intelligent LED lamp, the number then increased
Word signal processor, analog signal processing circuit and signal conversion module, it is achieved that active noise reduction function, meet people to day
Life often eliminates the demand of ambient noise.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit or essential attributes of the present utility model, it is possible to realize this practicality in other specific forms new
Type.Therefore, no matter from the point of view of which point, all should regard embodiment as exemplary, and be nonrestrictive, this practicality is new
The scope of type is limited by appended claims rather than described above, it is intended that by the equivalency at claims that falls
Implication and scope in all changes be included in the utility model.Furthermore, it is to be understood that " an including " word is not excluded for other unit
Or step, odd number is not excluded for plural number.In system claims book multiple unit of statement or device can also by a unit or
Device is realized by software or hardware.The first, the second word such as grade is used for representing title, and is not offered as any the most suitable
Sequence.
Last it is noted that various embodiments above is only in order to illustrate the technical solution of the utility model, rather than it is limited
System；Although being described in detail the utility model with reference to foregoing embodiments, those of ordinary skill in the art should
Understand: the technical scheme described in foregoing embodiments still can be modified by it, or to the most some or all of
Technical characteristic carries out equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution depart from this practicality new
The scope of type each embodiment technical scheme.
Claims (5)
1. the LED eliminating ambient noise, it is characterised in that including:
Power supply, LED luminescence component, analog signal processing circuit, signal conversion module, digital signal processor,
At least one loudspeaker and at least one microphone, at least one loudspeaker described and at least one microphone described respectively with institute
The first end stating analog signal processing circuit connects, the second end of described analog signal processing circuit and described signal conversion module
First end connect, the second end of described signal conversion module is connected with described digital signal processor, at least one wheat described
Gram wind is omni-directional and the smooth microphone of medium and low frequency frequency response curve；
Described power supply is for for described LED luminescence component, described analog signal processing circuit, described signal conversion module, described
Digital signal processor, at least one loudspeaker described and at least one microphone power described；
Described LED luminescence component is used for illuminating；
At least one microphone described is used for gathering ambient noise, and the described ambient noise collected is sent to described simulation
Signal processing circuit, described analog signal processing circuit is sent to described signal after being amplified described ambient noise and turns
Die change block, the described signal conversion module described ambient noise after amplifying is sent to described numeral after carrying out analog-to-digital conversion
Signal processor, described digital signal processor is for generating and described ambient noise frequency according to the ambient noise after analog-to-digital conversion
Rate is identical, amplitude is identical and the noise cancellation signal of opposite in phase, and described noise cancellation signal is sent to described signal conversion module,
Described signal conversion module is sent to described analog signal processing circuit, institute after described noise cancellation signal is carried out digital-to-analogue conversion
State after the noise cancellation signal after the conversion of analog signal processing circuit logarithmic mode is amplified and be sent at least one loudspeaker described, institute
State at least one loudspeaker described noise cancellation signal after amplifying to be transmitted in space, to eliminate described ambient noise.
LED the most according to claim 1, it is characterised in that also include:
Wireless communication module, is connected with described digital signal processor, for receiving other LED eliminated in ambient noise system
The first de-noising feedback signal that lamp sends, described first de-noising feedback signal includes the ambient noise after described LED de-noising
Frequency, amplitude and phase place, described first de-noising feedback signal is other LED described rings after determining described LED de-noising
Send to described LED when the noise reduction that border noise is unsatisfactory for presetting requires；
The frequency of ambient noise, amplitude and phase place after described digital signal processor is additionally operable to according to described de-noising adjust described
Any one in the frequency of noise cancellation signal, amplitude and phase place or a combination thereof.
LED the most according to claim 2, it is characterised in that described wireless communication module be additionally operable to receive described other
Ambient noise after LED de-noising；
Described digital signal processor is additionally operable to whether the ambient noise after judging other LED de-noisings described meets described presetting
Noise reduction requirement, when the ambient noise after other LED de-noisings described is unsatisfactory for described default noise reduction requirement, then according to described
Ambient noise after other LED de-noisings generates the second de-noising feedback signal, and described second de-noising feedback signal includes described
The frequency of ambient noise, amplitude and phase place after other LED de-noisings.
LED the most according to claim 1, it is characterised in that described analog signal processing circuit includes: at least one is years old
One amplification module and at least one second amplification module, described signal conversion module includes: at least one analog-digital converter and extremely
A few digital to analog converter, wherein, the number of the first amplification module, analog-digital converter number all with the number phase of microphone
Number with, the number of the second amplification module, digital to analog converter is all identical with the number of loudspeaker, each first amplification module
First end connects a microphone, the second end of described each first amplification module respectively with the first end of an analog-digital converter
Connecting, the second end of each analog-digital converter is connected with the first end of described digital signal processor respectively, described data signal
Second end of processor is connected with the first end of each digital to analog converter respectively, and the second end of described each digital to analog converter is respectively
Connecting second amplification module, each second amplification module connects a loudspeaker respectively；
Described each first amplification module sends after the described ambient noise collecting the microphone connected is amplified
Giving the analog-digital converter connected, described each analog-digital converter is after carrying out analog-to-digital conversion to the described ambient noise after amplifying
It is sent to described digital signal processor；
Described digital signal processor for sending described each digital to analog converter, described every number respectively by described noise cancellation signal
Weighted-voltage D/A converter is sent to the second amplification module connected after described noise cancellation signal is carried out digital-to-analogue conversion, and described each second
Amplification module noise cancellation signal after logarithmic mode is changed is sent to the loudspeaker connected after being amplified.
5. the system eliminating ambient noise, it is characterised in that include that at least two is as described in any one of claim 1-4
LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521129443.7U CN205566628U (en) | 2015-12-29 | 2015-12-29 | Eliminate ambient noise's LED lamp and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521129443.7U CN205566628U (en) | 2015-12-29 | 2015-12-29 | Eliminate ambient noise's LED lamp and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205566628U true CN205566628U (en) | 2016-09-07 |
Family
ID=56823623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521129443.7U Expired - Fee Related CN205566628U (en) | 2015-12-29 | 2015-12-29 | Eliminate ambient noise's LED lamp and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205566628U (en) |
-
2015
- 2015-12-29 CN CN201521129443.7U patent/CN205566628U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105681975B (en) | Eliminate the LED light and system of ambient noise | |
| CN205881451U (en) | Device of making an uproar is removed to intelligence house | |
| US10129657B2 (en) | Unidirectional loudspeaker enclosure | |
| CN107645694B (en) | A kind of orientation acoustic emission apparatus and method for bird repellent | |
| CN205793252U (en) | A kind of active noise reduction audio amplifier | |
| CN101790118A (en) | Audio-frequency directional loudspeaker system and signal processing method thereof | |
| CN204836544U (en) | Directional vocal audio amplifier circuit structure | |
| CN101583064A (en) | Micro audio directional loudspeaker with three dimension soundeffect | |
| CN206117997U (en) | Novel acoustic frequency directional loudspeaker | |
| CN104835487A (en) | Household active noise reduction system and noise reduction control method thereof | |
| CN205566628U (en) | Eliminate ambient noise's LED lamp and system | |
| CN107343235A (en) | It is a kind of can plug earphone cord active noise reduction earphone | |
| CN204859514U (en) | Audio amplifier of direction propagation sound | |
| CN203813932U (en) | Group chat device for multi-party voice communication | |
| CN207150781U (en) | A kind of active noise reduction earphone of pluggable earphone line | |
| US9171537B2 (en) | Apparatus and method for cancelling, reducing and modulating noise signal and for signal enhancing and signal proofing | |
| CN107420848A (en) | The method that music lighting lamp and music lighting lamp orientation play music | |
| CN203181214U (en) | Cantilever beam type mounting structure of piezoelectric ceramic bone conduction receiver | |
| CN109511068A (en) | A kind of carbon nanotube loudspeaker based on optoacoustic effect | |
| CN204463812U (en) | A kind of noise circumstance regulator | |
| CN209184781U (en) | A kind of Baffle Box of Bluetooth for eliminating echo | |
| CN208798146U (en) | A kind of multi-mode radio microphone apparatus | |
| CN105228049A (en) | A kind of earphone of reproducible sound effect parameters and using method thereof and mobile terminal | |
| CN220915400U (en) | Active noise reduction earphone based on multistage amplifying circuit | |
| CN202661162U (en) | Noise remote monitoring system of digitalization hybrid operation room |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160907 Termination date: 20191229 |