CN109282479A - Air conditioner noise reduction device and noise-reduction method - Google Patents
Air conditioner noise reduction device and noise-reduction method Download PDFInfo
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- CN109282479A CN109282479A CN201811083774.XA CN201811083774A CN109282479A CN 109282479 A CN109282479 A CN 109282479A CN 201811083774 A CN201811083774 A CN 201811083774A CN 109282479 A CN109282479 A CN 109282479A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/247—Active noise-suppression
Abstract
The invention discloses a kind of denoising device of air-conditioning and noise-reduction methods, are related to field of signal processing, for reducing the noise of indoor unit.Denoising device includes: at least one first acquisition module, at least one playing module and at least one second acquisition module；First acquisition module, playing module and the second acquisition module are sequentially arranged along the air-out direction of the air hose of the indoor unit of air-conditioning, wherein the first acquisition module is for acquiring the first noise, and the second acquisition module is for acquiring the second noise；Denoising device further includes control unit, is used for: obtaining third noise according to noise reduction algorithm and the first noise, and controls the playing module and play third noise, to offset the first noise.Second acquisition device is arranged in target noise reduction region, acquires the mixed signal of the first noise and third noise as feedback control signal.The embodiment of the present invention is applied to reduce the noise of the indoor unit of air-conditioning.
Description
Technical field
The present invention relates to field of signal processing more particularly to a kind of air conditioner noise reduction devices and noise-reduction method.
Background technique
The promotion required with the development of economy with people for quality of the life, noise pollution increasingly allow people to be difficult to hold
Bear.However, many equipment can all generate noise, especially in the environment around these equipment, this causes to be stranded greatly very much to people
It disturbs.
In daily life, at runtime, air outlet can generate biggish wind and make an uproar air-conditioning.While influencing user experience,
If the work and life in noise circumstance can endanger the physical and mental health of people to user for a long time, therefore how reduce the room of air-conditioning
The noise of interior machine air outlet becomes people's urgent problem to be solved.
Summary of the invention
The embodiment of the present invention provides a kind of air conditioner noise reduction device and noise-reduction method, exports for reducing the indoor unit of air-conditioning
Noise.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that
In a first aspect, the denoising device includes: at least one the embodiment provides a kind of air conditioner noise reduction device
A first acquisition module, at least one playing module and at least one second acquisition module；First acquisition module described is broadcast
Amplification module and second acquisition module are sequentially arranged along the air-out direction of the air hose of the indoor unit of the air-conditioning, and described first
Acquisition module is for acquiring the first noise, and second acquisition module is for acquiring the second noise；
Wherein, the position and quantity of first acquisition module and second acquisition module are to be transmitted according to the first noise
The sound wave coherence of relationship and first noise and second noise determines that the first noise transitive relation is that noise exists
The change generated between first acquisition module and second acquisition module as space length changes, the broadcasting mould
The quantity of block is to be determined according to the mode order number of desired noise reduction, and the first noise transitive relation and the mode order are root
Spectrogram parameter is carried out according to the acoustical cavity of the indoor unit to analyze to obtain；
The denoising device further includes control unit, is used for:
Obtain third noise according to noise reduction algorithm and first noise, wherein the third noise be and described first
Noise amplitude is equal and the noise of opposite in phase；
It controls the playing module and plays the third noise, to offset first noise.
Second aspect, the embodiment provides a kind of air-conditioning noise-reduction methods, are applied to any one of first aspect institute
The air conditioner noise reduction device stated, which comprises
Obtain the second noise according to noise reduction algorithm and the first noise, wherein second noise be and first noise
Amplitude is equal and the noise of opposite in phase；
The playing module for controlling the air conditioner noise reduction device plays second noise, to offset first noise.
The third aspect, provides a kind of computer readable storage medium for storing one or more programs, it is one or
Multiple programs include instruction, and described instruction makes the computer execute the side as described in second aspect when executed by a computer
Method.
Fourth aspect provides a kind of computer program product comprising instruction, when described instruction is run on computers
When, so that the computer executes the air-conditioning noise-reduction method as described in second aspect.
5th aspect, provides a kind of denoising device, comprising: processor and memory, memory are handled for storing program
Device calls the program of memory storage, to execute air-conditioning noise-reduction method described in above-mentioned second aspect.
The embodiment of the present invention provide air conditioner noise reduction device and noise-reduction method, the denoising device include at least one first
Acquisition module, at least one playing module and at least one second acquisition module；First acquisition module, playing module and second are adopted
Collection module is sequentially arranged along the air-out direction of the air hose of indoor unit.The embodiment of the present invention passes through according to sound wave coherence and noise
Transitive relation can determine position and the noise reduction algorithm of acquisition module, and be obtained according to noise reduction algorithm and the first noise to be dealt with
To the second noise equal and opposite in phase with the first noise amplitude, controls playing module and play the second noise, to offset first
Noise, and by being reasonably laid out, make laying more rationally for denoising device, while not influencing the function of indoor unit, leads to
It crosses active noise reduction to be preferably minimized the noise of indoor unit as far as possible, brings better experience to user.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram one for central air-conditioning tubular type indoor unit that the embodiment of the present invention provides；
Fig. 2 is a kind of side structure schematic diagram two for central air-conditioning tubular type indoor unit that the embodiment of the present invention provides；
Fig. 3 is a kind of structural schematic diagram one for denoising device that the embodiment of the present invention provides；
Fig. 4 is a kind of structural schematic diagram two for denoising device that the embodiment of the present invention provides；
Fig. 5 is a kind of structural schematic diagram three for denoising device that the embodiment of the present invention provides；
Fig. 6 is a kind of structural schematic diagram four for denoising device that the embodiment of the present invention provides；
Fig. 7 is a kind of structural schematic diagram five for denoising device that the embodiment of the present invention provides；
Fig. 8 is a kind of flow diagram one for noise-reduction method that the embodiment of the present invention provides；
Fig. 9 is a kind of flow diagram two for noise-reduction method that the embodiment of the present invention provides.
Specific embodiment
Air conditioner noise reduction device and noise-reduction method provided in an embodiment of the present invention are applied to central hollow as shown in Figure 1 and Figure 2
Wind pipe type indoor unit is adjusted, which includes at least one blower 101, heat exchanger 102, framework 103 and air outlet 104.
The denoising device and noise-reduction method of air-conditioning provided in an embodiment of the present invention, obtain according to noise reduction algorithm and the first noise
The second noise equal and opposite in phase with the first noise amplitude, and control playing module and play the second noise, to eliminate first
Noise.
Embodiment 1,
Referring to shown in Fig. 3, which includes: at least one first acquisition module 105, at least one second acquisition mould
Block 106 and at least one playing module 107；First acquisition module 105, playing module 107 and the second acquisition module 106 are along sky
The air-out direction of the air hose of the indoor unit of tune is sequentially arranged, and the first acquisition module 105 is for acquiring the first noise, the second acquisition mould
Block 106 is for acquiring the second noise.
Wherein, the position and quantity of the first acquisition module 105 and the second acquisition module 106 are according to the first noise and second
The sound wave coherence of noise and the first noise transitive relation determine that the first noise transitive relation is noise in the first acquisition module
105 and second change that is generated as space length changes between acquisition module 106, according to the quantity of playing module 107
It is expected that the mode order number of noise reduction determines, the first noise transitive relation and mode order are to be carried out according to the acoustical cavity of indoor unit
Spectrogram parameter is analyzed to obtain.
It should be noted that can determine the first acquisition module 105 and according to the geometry and sound field characteristic of indoor unit
The initial position of two acquisition modules 106, the geometry of indoor unit may include the structure of the framework 103 of indoor unit, blower 101
Position and heat exchanger 102 position, the sound field characteristic of indoor unit may include first area and the second area of indoor unit
Sound field stability.105 He of the first acquisition module can be determined by geometry to indoor unit and sound field characteristic analysis
The initial position of second acquisition module 106；Then according to the sound wave coherence of the first noise and the second noise and with the first noise
Transitive relation determines the first acquisition module 105 and the final position and quantity of the second acquisition module 106.
Optionally, the first acquisition module 105 and the second acquisition module 106 may include that the sound such as sensor or microphone are adopted
Acquisition means, playing module 107 can not limit for sounding devices, the embodiment of the present invention such as acoustical generator or loudspeakers.
Wherein, the second acquisition module 106 can be set in target noise reduction region, and target noise reduction region includes air outlet 104
Position, it can the second acquisition module 106 is set to 104 position of air outlet, control indoor unit blower 101 run and control
Record and broadcast amplification module 107 is not run, and the first acquisition module 105 of control acquires the first noise, and controls the acquisition of the second acquisition module 106
Second noise.By analyzing the sound wave coherence of the first noise and the second noise, and according to the first acquisition of sound wave coherence adjustment
The relative position of module 105 and the second acquisition module 106 obtains higher coherence coefficient with expectation, when coherence coefficient is got over
Gao Shi, noise reduction effect is better, therefore high coherence can be used as the first acquisition module 105 and the opposite position of the second acquisition module 106
It sets and lays a rational standard.
Spectrogram parameter analysis, the available operatic tunes knot are carried out to the acoustical cavity of indoor unit by test or simulation means
Multiple order mode of structure, it should be noted that the acoustical cavity of indoor unit may include the structure of the framework 103 of indoor unit.Often
Frequency range that a order mode includes is different, and illustratively, the first order model frequency range can be 1000HZ hereinafter, the
Two order model frequency ranges can be 1000HZ-2000HZ.Noise can also be obtained to transmit between each point in indoor machine
Variation, so as to obtain the noise transitive relation between the sound field each point of indoor unit, and then obtains 105 He of the first acquisition module
The first noise transitive relation between second acquisition module 106.The first noise and second acquired by the first acquisition module 105
The high coherence of the sound wave for the second noise that acquisition module 106 acquires, and noise transitive relation comprehensive analysis is combined, it can determine
The final position of first acquisition module 105 and the second acquisition module 106, and can determine that first adopts according to the complexity of sound field
Collect the quantity of module 105 and the second acquisition module 106.A kind of mode for confirming 107 quantity of playing module is according to desired noise reduction
The order number of spectrogram parameter determine the quantity of playing module 107.Illustratively, if the frequency range of the noise of expectation processing is
For 1000HZ hereinafter, the frequency range belongs to the first order of spectrogram parameter, i.e. the mode order number of expectation noise reduction is 1, then broadcasts
The quantity of amplification module 107 can be 1；If it is expected that the frequency range of the noise of processing is 2000HZ hereinafter, the frequency range is
The first two order of acoustical cavity, i.e. the mode order of expectation noise reduction are 2, then the quantity of playing module 107 can be 2,
And so on, as the mode order of desired noise reduction increases, the quantity of playing module 107 can be increased.
After determining position and the quantity of the first acquisition module 105, the second acquisition module 107 and playing module 106, control
Denoising device operates normally, and carries out active noise reduction.
Referring to fig. 3, denoising device can also include control unit 108, be used for:
Third noise is obtained according to noise reduction algorithm and the first noise, wherein third noise is equal with the first noise amplitude
And the noise of opposite in phase；Noise reduction algorithm is according to the first transmitting between the first acquisition module 105 and the second acquisition module 106
The second transmission function, playing module 107 and the first acquisition module between function, playing module 107 and the second acquisition module 106
Third transmission function between 105 obtains；First transmission function, the second transmission function and third transmission function are to make an uproar according to second
Sound transmission relationship obtains, and the second noise transitive relation is to carry out spectrogram parameter according to the acoustical cavity of indoor unit to analyze to obtain, the
Two noise transitive relations are for noise with sky between the first acquisition module 105, playing module 107 and the second acquisition module 106
Between distance change generate change；Control playing module 107 plays the third noise, to offset first noise.
It should be noted that noise can change with the variation of distance, can pass through test when noise is in transmittance process
Or simulation means carry out spectrogram parameter analysis to the indoor unit operatic tunes, available noise is in the change transmitted between each point in indoor machine
Change, so as to obtain the noise transitive relation between the sound field each point of indoor unit, and then obtains the first acquisition module 105, broadcasts
The second noise transitive relation between amplification module 107 and the second acquisition module 106.
Illustratively, when indoor unit is run, if the first noise of the first acquisition module 105 acquisition is Nr, playing module
107 play noises be Ns, the second acquisition module 106 acquisition the second noise be Ne, wherein Nr, Ns, Ne be variable, and Nr,
Ns, Ne are related with space length with the relative position of the first acquisition module 105, playing module 107 and the second acquisition module 106；
The first transmitting between available first acquisition module 105 of relationship and the second acquisition module 106 by analyzing Nr, Ne, Ns
The second transmission function, playing module 107 and the first acquisition module between function, playing module 107 and the second acquisition module 106
Third transmission function between 105.
If the first transmission function is F1, the second transmission function is F2, third transmission function is F3, then the first noise Nr is transmitted
Become F to the second acquisition module 1061(Nr), noise Ns is transferred to the second acquisition module 106 as F2(Ns), noise Ns is transferred to
First acquisition module 105 becomes F3(Ns), then the second noise Ne=F1(Nr-F3(Ns))+F2(Ns).According to the first transmission function,
The noise that generates when second transmission function and the noise reduction algorithm of third transmission function design are to reduce indoor unit operation as far as possible,
Guarantee the second noise Ne acoustic energy E (| Ne |2) minimum.
Optionally, referring to fig. 4, control unit 108 may include: at least one analog-digital converter 109, digital-to-analogue turn
Parallel operation 110 and controller 111, controller 111 may include digital signal processor (Digital Singnal Processor,
DSP), the microprocessors such as single-chip microcontroller (Microcontroller Unit, MCU), in Fig. 4, A/D indicates Analogue to
Digital, i.e. analog-digital converter, D/A indicate Digital to Analogue, i.e. digital analog converter.
Specifically, after the first acquisition module 105 acquires the first noise, using the first noise as the reference signal of feedforward control
It is transferred to analog-digital converter 109 and carries out analog-to-digital conversion, and by the noise signal transmission after conversion to control unit 108, control is single
Member 108 according to after conversion noise signal and noise reduction algorithm obtain de-noising signal, and de-noising signal is transferred to digital analog converter
110 progress digital-to-analogue conversions obtain third noise, and third noise is equal with the first noise amplitude and opposite in phase, digital analog converter
110 play out third noise transmission to playing module 107, the third noise after broadcasting can with the first noise cancellation, from
And reach the purpose of noise reduction.
It should be noted that since the noise that the first noise is multiband forms, when carrying out noise reduction process, it is impossible to
First noise is completely eliminated, therefore, by the way that the second acquisition module 106 is arranged in target noise reduction region, first can be acquired and made an uproar
Error noise after sound and third noise cancellation, the second acquisition module 106 pass collected error noise after digital-to-analogue conversion
It is defeated by control unit 108 and carries out feedback control, so as to further decrease the noise of indoor unit generation.
Optionally, control unit 108 can be also used for:
Before obtaining third noise according to noise reduction algorithm and the first noise, the 4th removed in first noise makes an uproar
Sound.
Wherein, the 4th noise is the noise at third noise transmission to the first acquisition module 105.
It should be noted that playing module 107, when playing third noise, since sound wave is non-directional, first is adopted
Collection module inherently collects the noise of the sending of playing module 107, which influences whether that controller 108 handles the first noise,
Therefore control unit 108 is before handling the first noise, the Acoustic Wave Propagation that playing module 107 can be issued to the first acquisition module
Noise at 105 does removal processing.
Optionally, referring to shown in Fig. 5, Fig. 6, the first acquisition module 105 is set to when first area and second area
First area when sound field is stablized, the second acquisition module 106 are set to when the sound field of first area and second area is stablized
Second area；
Wherein, sound field is stabilized to there is no second level sound source, and sound field shakiness is set to there are second level sound source, and second level sound source is air-flow
In the noise source that the other positions at blower 101 in addition to generate, first area is the blower 101 of indoor unit and changing for indoor unit
Region between hot device 102, region of the second area between heat exchanger 102 and air outlet of indoor set 104.
It should be noted that when blower 101 is run, the noise that the air-flow of generation can produce at blower, when air-flow stream
When moving to the other positions of indoor unit, due to that may have air-flow vortex, it is thus possible to generate new noise source, i.e. second level sound
Source, when there are second level sound source, the sound field in the region is unstable；When second level sound source is not present, the sound field in the region can reach
To stable state.In the state that sound field is stablized, the difficulty of noise impedance can be reduced, therefore by the first acquisition module
105, the second acquisition module 106 and playing module 107 are set in stable sound field, and the noise reduction effect of denoising device is more preferable.
When the sound field of the first area of indoor unit and second area is stablized, by the way that the first acquisition module 105 is set to
Second acquisition module 106 is set to second area, can efficiently use the pipeline form of wind pipe type indoor unit by first area.
Optionally, referring to shown in Fig. 5,6, when the sound field of first area and second area is stablized, playing module 107 can
To be set to first area, also can be set in second area.First acquisition module 105 and playing module 107 are set to
One region, while efficiently using the pipeline form of wind pipe type indoor unit, it is possible to reduce wind field of the denoising device to indoor unit
Influence.The position of playing module 107 can be determined according to the geometry and noise reduction algorithm time delay of indoor unit, if noise reduction is calculated
Method operation efficiency is high, then can be set to playing module 107 does not influence indoor unit work, sound field stabilization and acquire close to first
The position of module 105.
Optionally, referring to fig. 7, the first acquisition module 105 and the second acquisition module 106 are set to and work as first area
Second area when sound field is unstable and the sound field of second area stablizes.
Wherein, first area is the region between the blower 101 of indoor unit and the heat exchanger 102 of indoor unit, second area
For the region between heat exchanger 102 and air outlet of indoor set 104.
When the operation of wind pipe type indoor unit, blower 101 can produce air-flow, and generate larger noise, what blower 101 was blown out
When air-flow enters pipeline, if air-flow is unstable, first area sound field potentially unstable, when air-flow is after heat exchanger 102,
Air-flow can achieve stable state, then second area forms stable sound field, by by the first acquisition module 105, playing module 107
And second acquisition module 106 along 104 direction of air outlet of indoor unit be successively set on second area, optimal drop can be obtained
It makes an uproar effect.
The embodiment of the present invention provide air conditioner noise reduction device, the denoising device include at least one first acquisition module,
At least one playing module and at least one second acquisition module；First acquisition module, playing module and the second acquisition module edge
The air-out direction of the air hose of indoor unit be sequentially arranged.The first noise is acquired by the first acquisition module, and according to the first noise
Equal with the first noise amplitude and opposite in phase noise is obtained with noise reduction algorithm, control playing module plays the noise, to support
Disappear the first noise.The embodiment of the present invention can also include feedback control: acquire the first noise and second by the second acquisition module
Error noise after the counteracting of noise, and error noise is transferred to control unit and carries out noise reduction process.And pass through reasonable cloth
Office makes laying more rationally for denoising device, while not influencing the function of indoor unit, by active noise reduction by indoor unit
Noise is preferably minimized as far as possible, brings better experience to user.
Embodiment 2,
The embodiment of the invention provides a kind of air-conditioning noise-reduction methods, are applied to above-mentioned air conditioner noise reduction device, referring to institute in Fig. 8
Show, which includes:
S101, the second noise is obtained according to noise reduction algorithm and the first noise.
Wherein, the second noise is noise equal and opposite in phase with the first noise amplitude；Noise reduction algorithm is according to first
The first transmission function, playing module 107 and the second acquisition module 106 between acquisition module 105 and the second acquisition module 106 it
Between the second transmission function, the third transmission function between playing module 107 and the first acquisition module 105 obtains；First transmitting
Function, the second transmission function and third transmission function are to be obtained according to the second noise transitive relation, and the second noise transitive relation is
It carries out spectrogram parameter according to the acoustical cavity of the indoor unit of air-conditioning to analyze to obtain, the second noise transitive relation is that noise is filled in noise reduction
As what space length variation generated changes between the first acquisition module 105, playing module 107 and the second acquisition module 106 set
Become.
S102, control playing module play second noise, to offset the first noise.
Optionally, referring to fig. 9, the noise-reduction method further include:
Third noise in S201, the first noise of removal.
Wherein, third noise is the noise at second noise transmission to the first acquisition module 105.
Optionally, noise-reduction method further include: the first acquisition module 105 is set to the sound when first area and second area
First area when stablizing, the second acquisition module 106 are set to the when the sound field of first area and second area is stablized
Two regions；
Wherein, sound field is stabilized to there is no second level sound source, and sound field shakiness is set to there are second level sound source, and second level sound source is air-flow
In the noise source that the other positions at blower 101 in addition to generate, first area is the blower 101 of indoor unit and changing for indoor unit
Region between hot device 102, region of the second area between heat exchanger 102 and air outlet of indoor set 104.
Optionally, noise-reduction method further include: the first acquisition module 105 and the second acquisition module 106 are set to when first
The second area when sound field in region is unstable and the sound field of second area stablizes.
Wherein, sound field is stabilized to there is no second level sound source, and sound field shakiness is set to there are second level sound source, and second level sound source is air-flow
In the noise source that the other positions at blower 101 in addition to generate, first area is the blower 101 of indoor unit and changing for indoor unit
Region between hot device 102, region of the second area between heat exchanger 102 and air outlet of indoor set 104.
The embodiment of the present invention provides a kind of computer readable storage medium for storing one or more programs, one
Or multiple programs include instruction, described instruction makes computer execute the drop as described in Fig. 8 and Fig. 9 when executed by a computer
Method for de-noising.
The embodiment of the present invention provides a kind of computer program product comprising instruction, when instruction is run on computers
When, so that computer executes noise-reduction method described in Fig. 8 and Fig. 9.
The embodiment of the present invention provides a kind of air conditioner noise reduction device, comprising: processor and memory, memory is for storing
Program, processor calls the program of memory storage, to execute the noise-reduction method as described in Fig. 8 and Fig. 9.
It can be with by noise-reduction method, computer readable storage medium, computer program product in an embodiment of the present invention
Applied to above-mentioned sole duty, therefore, technical effect can be obtained see also above-mentioned apparatus embodiment, the embodiment of the present invention exists
This is repeated no more.
It should be noted that above-mentioned each unit can be the processor individually set up, also can integrate controller certain
It is realized in one processor, in addition it is also possible to be stored in the form of program code in the memory of controller, by controller
Some processor calls and executes the function of the above each unit.Processor described here can be a central processing unit
(Central Processing Unit, CPU) or specific integrated circuit (Application Specific
Integrated Circuit, ASIC), or be arranged to implement one or more integrated circuits of the embodiment of the present invention.
It should be understood that in various embodiments of the present invention, magnitude of the sequence numbers of the above procedures are not meant to execute suitable
Sequence it is successive, the execution of each process sequence should be determined by its function and internal logic, the implementation without coping with the embodiment of the present invention
Process constitutes any restriction.
Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is implemented in hardware or software, the specific application and design constraint depending on technical solution.Professional technician
Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed
The scope of the present invention.
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, can be with reference to the corresponding process in aforementioned device embodiment, and details are not described herein.
In several embodiments provided by the present invention, it should be understood that disclosed system, apparatus and method, it can be with
It realizes by another way.For example, apparatus embodiments described above are merely indicative, for example, the unit
It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components
It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, the indirect coupling of equipment or unit
It closes or communicates to connect, can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.
Claims (11)
1. a kind of air conditioner noise reduction device, which is characterized in that the denoising device includes: at least one first acquisition module, at least
One playing module and at least one second acquisition module；First acquisition module, the playing module and described second are adopted
Collection module is sequentially arranged along the air-out direction of the air hose of the indoor unit of the air-conditioning, and first acquisition module is for acquiring the
One noise, second acquisition module is for acquiring the second noise；
Wherein, the position and quantity of first acquisition module and second acquisition module is according to first noise and institutes
The sound wave coherence and the first noise transitive relation for stating the second noise determine that the first noise transitive relation is noise described
The change generated between first acquisition module and second acquisition module as space length changes, the playing module
Quantity is to determine that the first noise transitive relation and the mode order is according to institutes according to the mode order number of desired noise reduction
The acoustical cavity for stating indoor unit carries out spectrogram parameter and analyzes to obtain；
The denoising device further includes control unit, is used for:
Obtain third noise according to noise reduction algorithm and first noise, wherein the third noise be and first noise
Amplitude is equal and the noise of opposite in phase；
It controls the playing module and plays the third noise, to offset first noise.
2. air conditioner noise reduction device according to claim 1, which is characterized in that described control unit is also used to:
It is described the third noise is obtained according to the noise reduction algorithm and first noise before, remove first noise
In the 4th noise, wherein the 4th noise be the third noise transmission to first acquisition module at noise.
3. air conditioner noise reduction device according to claim 1, which is characterized in that first acquisition module is set to when first
The first area when sound field of region and second area is stablized, second acquisition module are set to when the first area
And the second area sound field stablize when the second area；
Wherein, the sound field is stabilized to there is no second level sound source, and the sound field shakiness is set to there are the second level sound source, and described two
Grade sound source is the noise source that air-flow is generated in the other positions at the blower in addition to, and the first area is the indoor unit
Blower and the indoor unit heat exchanger between region, the second area is the heat exchanger and the indoor unit outlet air
Region between mouthful.
4. air conditioner noise reduction device according to claim 1, which is characterized in that first acquisition module and described second adopt
Collection module is set to the second area when the sound field of first area is unstable and the sound field of second area stablizes；
Wherein, the sound field is stabilized to there is no second level sound source, and the sound field shakiness is set to there are the second level sound source, and described two
Grade sound source is the noise source that air-flow is generated in the other positions at the blower in addition to, and the first area is the indoor unit
Blower and the indoor unit heat exchanger between region, the second area is the heat exchanger and the indoor unit outlet air
Region between mouthful.
5. a kind of air-conditioning noise-reduction method, which is characterized in that be applied to the power described in any item air conditioner noise reduction devices of 1-4, the sky
Downgrading method for de-noising includes:
Obtain the second noise according to noise reduction algorithm and the first noise, wherein second noise be and first noise amplitude
Equal and opposite in phase noise；
The playing module for controlling the air conditioner noise reduction device plays second noise, to offset first noise.
6. air-conditioning noise-reduction method according to claim 5, which is characterized in that the air-conditioning noise-reduction method further include:
It is described second noise is obtained according to the noise reduction algorithm and first noise before, remove first noise
In third noise, wherein the third noise be second noise transmission to the air conditioner noise reduction device first acquisition
Noise at module.
7. air-conditioning noise-reduction method according to claim 5, which is characterized in that the first acquisition mould of the air conditioner noise reduction device
Block be set to when the sound field of first area and second area stablize when the first area, the second of the air conditioner noise reduction device
Acquisition module is set to the second area when the sound field of the first area and the second area is stablized；
Wherein, the sound field is stabilized to there is no second level sound source, and the sound field shakiness is set to there are the second level sound source, and described two
Grade sound source is the noise source that air-flow is generated in the other positions at the blower of the indoor unit of the air-conditioning in addition to, firstth area
Domain be the indoor unit blower and the indoor unit heat exchanger between region, the second area be the heat exchanger with
Region between the air outlet of indoor set.
8. air-conditioning noise-reduction method according to claim 5, which is characterized in that the first acquisition mould of the air conditioner noise reduction device
Second acquisition module of block and the air conditioner noise reduction device is set to when the sound field of first area is unstable and the sound of second area
Second area when field is stablized；
Wherein, the sound field is stabilized to there is no second level sound source, and the sound field shakiness is set to there are the second level sound source, and described two
Grade sound source is the noise source that air-flow is generated in the other positions at the blower of the indoor unit of the air-conditioning in addition to, firstth area
Domain be the indoor unit blower and the indoor unit heat exchanger between region, the second area be the heat exchanger with
Region between the air outlet of indoor set.
9. a kind of computer readable storage medium for storing one or more programs, which is characterized in that one or more of journeys
Sequence includes instruction, and described instruction executes the computer as claim 5-8 is described in any item
Air-conditioning noise-reduction method.
10. a kind of computer program product comprising instruction, which is characterized in that when described instruction is run on computers, make
It obtains the computer and executes such as the described in any item air-conditioning noise-reduction methods of claim 5-8.
11. a kind of air conditioner noise reduction device characterized by comprising processor and memory, memory are located for storing program
The program that device calls memory storage is managed, to execute such as the described in any item air-conditioning noise-reduction methods of claim 5-8.
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