CN109870230A - A kind of application of environment denoising method in audio identification - Google Patents
A kind of application of environment denoising method in audio identification Download PDFInfo
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- CN109870230A CN109870230A CN201711270689.XA CN201711270689A CN109870230A CN 109870230 A CN109870230 A CN 109870230A CN 201711270689 A CN201711270689 A CN 201711270689A CN 109870230 A CN109870230 A CN 109870230A
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Abstract
The invention discloses a kind of application of environment denoising method in audio identification, the following steps are included: sound collection means install location more demanding to sound in the environment, when sound collection means are collected into the sound that neighbouring sound source transmits, sound is transported to analyzer by signal wire and carries out data processing conversion, later again will treated data signal transmission to decision processor progress sound level division and judgement, carry out grade classification again when being determined as noise, corresponding behave is made further according to corresponding divided rank later, when decision processor is determined as very noisy, it is corresponding to carry out relevant sound source noise elimination, start the first sound insulationg board and the second acoustic board while handling.The present invention accurately the sound level to city each region can carry out careful division, to make accurate determination processing, can will automatically determine that result is analyzed and make corresponding measure again, carry out noise reduction process.
Description
Technical field
The present invention relates to noise measuring technical field more particularly to a kind of environment denoising method answering in audio identification
With.
Background technique
Noise is also a kind of sound, and sound is the mechanical oscillation by object and generates that the object of vibration becomes sound source, it
It can be solid, gas or liquid, sound can be propagated by medium (empty gas and solid or liquid), formed sound wave, worked as sound
Wave is divided into power, sound excessive i.e. noise when reaching human ear, the method for eliminating or reducing noise has noise elimination, insulates against sound and anti-
Penetrate three kinds.
Through retrieving, Chinese patent grant number is the patent of CN202793579U, discloses a kind of detection of city noise and cuts off,
Including terminal box body, sound transducer and control circuit, sound transducer is mounted in terminal box body, and control circuit is mounted on end
It holds on the intracorporal circuit board of box, control circuit includes signal acquisition module, single-chip microcontroller and mobile wireless network transmitting module；Sound
The output end of sensor is connected with the input terminal of signal acquisition module, the output end of signal acquisition module and the input terminal of single-chip microcontroller
It is connected, the output end of single-chip microcontroller is connected with the input terminal of mobile wireless network transmitting module.The input of sound transducer voltage change
This voltage change is converted to level signal and exported to single-chip microcontroller by signal acquisition module, by calculating, comparing, mobile radio network
Noise region information is passed through network transmission to specified ground by network transmitting module, but this method does not have effective sound collection
Method and corresponding treatment measures.
Summary of the invention
The purpose of the present invention is to solve in the prior art without effective sound collection method and corresponding processing
Measure problem, and a kind of application of the environment denoising method proposed in audio identification.
To achieve the goals above, present invention employs following technical solutions:
A kind of application of environment denoising method in audio identification, comprising the following steps:
S1: sound collection means install location more demanding to sound in the environment.
S2: when sound collection means are collected into the sound that neighbouring sound source transmits, sound is conveyed by signal wire
Data processing conversion is carried out to analyzer.
S3: later again will treated data signal transmission to decision processor progress sound level division and judgement.
S4: carrying out careful division again when being determined as noise, carries out the grade for dividing noise, the grade of noise
It is divided into noisy (60-70 decibels) and very noisy (70-90 decibels).
S5: making corresponding behave further according to corresponding divided rank later, when decision processor is determined as very noisy
It waits, corresponding relevant sound source noise elimination, the first sound insulationg board of starting and the second acoustic board of carrying out is handled simultaneously.
S6: when decision processor determines that sound when (60-70 decibels) are i.e. noisy, passes through controller the second sound insulationg board of starting
With the second acoustic board.
Preferably, it is rotatably connected to driving wheel and driven respectively close to top and low side in the cavity of the hollow wall
Wheel, and the rotation axis of driving wheel is welded with motor, and controller, and controller have been bolted on the inside of the hollow wall
It is connected to the motor by conducting wire, the hollow wall is welded with the first sound insulationg board, and the first sound insulationg board far from the side of controller
It is interior to be equipped with rectangular channel, the second sound insulationg board is slidably connected in the rectangular channel, revive the first sound insulationg board of Sohu and the second sound insulationg board
Outer wall is bonded with the first acoustic board and the second acoustic board respectively, is connected with wirerope in the race of the driving wheel and driven wheel,
And fixed block is connected on wirerope, the fixed block is welded on the side of the second sound insulationg board.
Preferably, urban environment noise monitoring includes: city regional environment noise monitoring, urban traffic noise monitoring, city
The investigation test etc. for the noise source that disturbs residents in city's ambient noise long term monitoring and urban environment, Basic Measuring Instrument are precision sound level meter
Or calibration should be carried out in accordance with regulations in common sound level meter, instrument before, check cell voltage, require to resume classes after measurement primary, front and back
Sensitivity is not more than 2dB, such as has ready conditions, and recorder, logger etc., city regional environment noise monitoring location: will can be used
The city of generaI investigation measurement is divided into equidistant grid, and measurement point is located at each grid element center, can if the position of central point should not measure
The position that side can measure is moved on to, grid number should not be less than 100.
Preferably, it should generally be selected in no rain when measuring, without (except special circumstances), sound level meter should add fan housing to keep away when avenging
Exempt from wind noise interference, while microphone can also be kept to clean, the above strong wind of level Four should stop measuring, and sound level meter can hold or consolidate
It is scheduled on tripod, microphone is 1.2 meters high from the ground, is placed on car, it is desirable that microphone stretches out the outer certain distance of vehicle, keeps away as far as possible
The influence for exempting from car body reflection, 1.2 meters or so are still kept with ground distance, and being such as fixed on roof will be indicated, and hold sound level
Meter should make human body and 0.5 meter of microphone distance or more, and the amount of measurement is that the A sound level of certain time interval (usually 5 seconds) is instantaneous
Value, dynamic characteristic select slow-response.
Preferably, it selects time of measuring: being divided into daytime (6:00-22:00) and night (22:00-6:00) two parts, daytime
It measures when being generally selected in 8:00-12:00 or when 14:00-18:00, when night is generally selected in 22:00-5:00, with area and season
Difference, above-mentioned time can slightly be changed, measuring point selection: measuring point is selected in the inhabitation of person who suffers influences or the building that works is 1 meter outer, transaudient
Device is above the ground level at the influence of noise sensitivity of 1.2m or more, and microphone is directed at Sounnd source direction, nearby should without other barrier or
Reflector answers back-reflection body when not can avoid, the interference for the crowd of surrounding and watching should be avoided, and measuring point nearby has what stationary sound source or friendship
When logical noise jamming, it should be illustrated.
Preferably, by above-mentioned regulation in each measurement point, 100 data is continuously read and (are answered when noise fluctuation is larger
Take 200 data) noise profile of the point is represented, measurement result is generally indicated with statistical noise grade and equivalent continuous A sound level,
200 data measured by each measuring point are arranged by descending order, the 20th data are L10, and the 100th data are
For L50, the 180th data are L90, and empirical evidence urban traffic noise measured value substantially conforms to normal distribution, therefore, can be straight
Connect and calculate equivalent continuous A sound level and standard deviation value with approximate formula, Leq ≈ L50+d2/60, d=L10-L90L10, L50 and
L90 be measurement 200 data by descending arrangement after, the corresponding sound level of the 20th, the 100th and the 180th number.
Preferably, first sound insulationg board, the second sound insulationg board, the first acoustic board and the second acoustic board are installed in residential area
Cell or office building periphery than comparatively dense, sound source, which is eliminated the noise, is closed the noise of sound source by manually warning or phone warning
Or noise reduction.
Compared with prior art, the application the present invention provides a kind of environment denoising method in audio identification, have with
It is lower the utility model has the advantages that
1, the application of the environment denoising method in audio identification, the noise by the way that latticed collection point is arranged collect and
Analysis processing device accurately the sound level to city each region can carry out careful division, accurately sentence to make
Fixed processing.
2, the application of the environment denoising method in audio identification can be certainly by setting decision processor and controller
It will dynamicly determine that result is analyzed and make corresponding measure again, carry out noise reduction process.
3, the application of the environment denoising method in audio identification can be according to wind by the city acquisition means of setting
The concrete condition of fast time to carry out region instantly the collection of sound, and the data obtained in this way are more accurate.
4, the application of the environment denoising method in audio identification, can be with by the controller and driving wheel driven wheel of setting
The long-range operation realized to two sound insulationg boards improves acoustical ratings to realize that the classification to noise obstructs.
It is not directed to part in the device to be the same as those in the prior art or can be realized by using the prior art, structure of the invention
Simply, easy to operate, the result of detection more tends to true value.
Detailed description of the invention
Fig. 1 is a kind of flowage structure schematic diagram of application of the environment denoising method proposed by the present invention in audio identification；
Fig. 2 is a kind of schematic cross-sectional view of application of the environment denoising method proposed by the present invention in audio identification.
In figure: 1 hollow wall, 2 controllers, 3 driving wheels, 4 rectangular channels, 5 first sound insulationg boards, 6 first acoustic boards, 7 second
Sound insulationg board, 8 second acoustic boards, 9 driven wheels, 10 fixed blocks.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
In the description of the present invention, it is to be understood that, term " on ", "lower", "front", "rear", "left", "right", "top",
The orientation or positional relationship of the instructions such as "bottom", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, merely to just
In description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with
Specific orientation construction and operation, therefore be not considered as limiting the invention.
Referring to Fig.1-2, application of a kind of environment denoising method in audio identification, comprising the following steps:
S1: sound collection means 1 install location more demanding to sound in the environment.
S2: when sound collection means 1 are collected into the sound that neighbouring sound source transmits, sound is conveyed by signal wire
Data processing conversion is carried out to analyzer 2.
S3: later again will treated data signal transmission to the progress sound level division of decision processor 3 and judgement.
S4: carrying out careful division again when being determined as noise, carries out the grade for dividing noise, the grade of noise
It is divided into noisy (60-70 decibels) and very noisy (70-90 decibels).
S5: making corresponding behave further according to corresponding divided rank later, when decision processor 3 is determined as very noisy
It waits, corresponding relevant sound source noise elimination 4, the first sound insulationg board 5 of starting and the second acoustic board 6 of carrying out is handled simultaneously.
S6: when decision processor 3 determines that sound when (60-70 decibels) are i.e. noisy, passes through second sound insulation of the starting of controller 2
Plate 7 and the second acoustic board 8.
In the present invention, it is rotatably connected to driving wheel 3 and driven wheel respectively close to top and low side in the cavity of hollow wall 1
9, and the rotation axis of driving wheel 9 is welded with motor, the inside of hollow wall 1 has been bolted controller 2, and controller 2
It is connected to the motor by conducting wire, hollow wall 1 is welded with the first sound insulationg board 5, and the first sound insulationg board 5 far from the side of controller 2
It is interior to be equipped with rectangular channel 4, the second sound insulationg board 7 is slidably connected in rectangular channel 4, revive Sohu's the first sound insulationg board 5 and the second sound insulationg board 7
Outer wall is bonded with the first acoustic board 6 and the second acoustic board 8 respectively, is connected with wirerope in the race of driving wheel 3 and driven wheel 9,
And fixed block 10 is connected on wirerope, fixed block is welded on the side of the second sound insulationg board 7, the model DATA- of controller 2
7311, urban environment noise monitoring includes: city regional environment noise monitoring, urban traffic noise monitoring, urban environment noise
The investigation test etc. for the noise source that disturbs residents in long term monitoring and urban environment, Basic Measuring Instrument are precision sound level meter or common sound level
Calibration should be carried out in accordance with regulations in meter, instrument before, check cell voltage, require to resume classes after measurement primary, front and back sensitivity is little
It in 2dB, such as has ready conditions, recorder, logger etc. can be used, measurement city regional environment noise monitoring location: will be generally investigated
City is divided into equidistant grid, and measurement point is located at each grid element center, if the position of central point should not measure, can move on to side
The position that can be measured, grid number should not be less than 100, should generally be selected in when measuring no rain, without snow when special circumstances except,
Sound level meter should add fan housing to avoid wind noise interference, while microphone can also be kept to clean, and the above strong wind of level Four should stop measuring,
Sound level meter can hold or be fixed on tripod, and microphone is 1.2 meters high from the ground, be placed on car, it is desirable that microphone stretches out
The outer certain distance of vehicle, the influence for avoiding car body to reflect as far as possible still keep 1.2 meters or so with ground distance, are such as fixed on roof
It is indicated, hand-held sound level meter should make human body and 0.5 meter of microphone distance or more, and the amount of measurement is that certain time interval are usual
For 5 seconds A sound level instantaneous values, dynamic characteristic selected slow-response, selects time of measuring: being divided into 6:00-22:00 on daytime and night
22:00-6:00 two parts, daytime measure when being generally selected in 8:00-12:00 or when 14:00-18:00, and night is generally selected in 22:
When 00-5:00, different with season with area, the above-mentioned time can slightly be changed, and measuring point selection: measuring point is selected in the inhabitation of person who suffers influences
Or work building is 1 meter outer, microphone is above the ground level at the influence of noise sensitivity of 1.2m or more, and microphone is directed at Sounnd source direction,
Nearby back-reflection body should be answered when not can avoid, the interference for the crowd of surrounding and watching, measuring point should be avoided without other barrier or reflector
What when nearby thering is stationary sound source or traffic noise to interfere, should be illustrated, by above-mentioned regulation in each measurement point, continuous reading
The noise profile for taking 100 data that 200 data should be taken to represent the point when noise fluctuation is larger, measurement result is generally with statistics
Noise level and equivalent continuous A sound level indicate, 200 data measured by each measuring point are arranged by descending order, the
20 data are L10, and the 100th data are L50, and the 180th data are L90, and empirical evidence urban traffic noise is surveyed
Magnitude substantially conforms to normal distribution, therefore, directly can calculate equivalent continuous A sound level and standard deviation value, Leq ≈ with approximate formula
L50+d2/60, d=L10-L90, L10, L50 and L90 be measurement 200 data by descending arrangement after, the 20th, the 100th
The corresponding sound level with the 180th number, the first sound insulationg board 5, the second sound insulationg board 7, the first acoustic board 6 and the second acoustic board 8 are pacified
Cell or office building periphery mounted in residential area than comparatively dense, sound source noise elimination 4 are warned by manually warning or phone by sound source
Noise carries out closing or noise reduction.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (7)
1. a kind of application of environment denoising method in audio identification, comprising the following steps:
S1: sound collection means install location more demanding to sound in the environment.
S2: when sound collection means are collected into the sound that neighbouring sound source transmits, sound is transported to point by signal wire
Parser carries out data processing conversion.
S3: later again will treated data signal transmission to decision processor progress sound level division and judgement.
S4: carrying out careful division again when being determined as noise, carries out the grade for dividing noise, and the grade of noise is divided into
It is noisy (60-70 decibels) and very noisy (70-90 decibels).
S5: making corresponding behave further according to corresponding divided rank later, right when decision processor is determined as very noisy
The relevant sound source noise elimination of the carry out answered starts the first sound insulationg board (5) and the second acoustic board (6) while handling.
S6: when decision processor determines that sound when (60-70 decibels) are i.e. noisy, passes through the second sound insulationg board of controller (2) starting
(7) and the second acoustic board (8).
2. a kind of application of the environment denoising method according to claim 1 in audio identification, including hollow wall (1),
It is characterized in that, being rotatably connected to driving wheel (3) and driven respectively close to top and low side in the cavity of the hollow wall (1)
It takes turns (9), and the rotation axis of driving wheel (9) is welded with motor, has been bolted controller on the inside of the hollow wall (1)
(2), and controller (2) is connected to the motor by conducting wire, and the hollow wall (1) is welded with the far from the side of controller (2)
One sound insulationg board (5), and rectangular channel (4) are equipped in the first sound insulationg board (5), the second sound insulation is slidably connected in the rectangular channel (4)
The outer wall of plate (7), first sound insulationg board (5) and the second sound insulationg board (7) is bonded with the first acoustic board (6) and the second sound absorption respectively
It is connected with wirerope in the race of plate (8), the driving wheel (3) and driven wheel (9), and is connected with fixed block on wirerope
(10), the fixed block (10) is welded on the side of the second sound insulationg board (7).
3. a kind of application of the environment denoising method according to claim 1 in audio identification, which is characterized in that city ring
Border noise monitoring includes: city regional environment noise monitoring, urban traffic noise monitoring, urban environment noise long term monitoring and city
The investigation test etc. for the noise source that disturbs residents in city's environment, Basic Measuring Instrument are precision sound level meter or common sound level meter, and instrument uses
Before should be carried out in accordance with regulations calibration, check cell voltage, require to resume classes after measurement primary, front and back sensitivity is not more than 2dB, if any item
Recorder, logger etc. can be used in part, and city regional environment noise monitoring location: the city that will generally investigate measurement is divided into equidistantly
Off-network lattice, measurement point are located at each grid element center, if the position of central point should not measure, can move on to the position that side can measure
It sets, grid number should not be less than 100.
4. a kind of application of the environment denoising method according to claim 1 in audio identification, which is characterized in that work as measurement
When should generally be selected in no rain, without snow when (except special circumstances), sound level meter should add fan housing to avoid wind noise interference, while can also
Keep microphone cleaning, the above strong wind of level Four should stop measuring, and sound level meter can hold or be fixed on tripod, microphone from
Ground is 1.2 meters high, is placed on car, it is desirable that microphone stretches out the outer certain distance of vehicle, the influence for avoiding car body to reflect as far as possible, with ground
Identity distance is from still keeping 1.2 meters or so, and being such as fixed on roof will be indicated, and hand-held sound level meter should make human body and microphone distance
0.5 meter or more, the amount of measurement is the A sound level instantaneous value of certain time interval (usually 5 seconds), and dynamic characteristic selects slow-response.
5. a kind of application of the environment denoising method according to claim 1 in audio identification, which is characterized in that selection is surveyed
The amount time: it is divided into daytime (6:00-22:00) and night (22:00-6:00) two parts, daytime, measurement was generally selected in 8:00-12:
When 00 or when 14:00-18:00, when night is generally selected in 22:00-5:00, different with season with area, the above-mentioned time can be slightly
Change, measuring point selection: measuring point be selected in person who suffers influences inhabitation or outer 1 meter of work building, microphone is above the ground level 1.2m or more
Influence of noise sensitivity at, microphone is directed at Sounnd source direction, should be nearby answered when not can avoid without other barrier or reflector
Back-reflection body, the interference for the crowd of surrounding and watching should be avoided should be subject to when measuring point nearby has what stationary sound source or traffic noise to interfere
Explanation.
6. a kind of application of the environment denoising method according to claim 1 in audio identification, which is characterized in that by above-mentioned
Regulation continuously reads 100 data (should take 200 data when noise fluctuation is larger) and represents the point in each measurement point
Noise profile, measurement result generally indicate with statistical noise grade and equivalent continuous A sound level, will be 200 measured by each measuring point
A data are arranged by descending order, and the 20th data are L10, and the 100th data are L50, and the 180th data are
L90, empirical evidence urban traffic noise measured value substantially conform to normal distribution, therefore, can directly be calculated with approximate formula equivalent
Continuous A sound level and standard deviation value, Leq ≈ L50+d2/60, d=L10-L90, L10, L50 and L90 are 200 data of measurement
After descending arrangement, the corresponding sound level of the 20th, the 100th and the 180th number.
7. a kind of application of the environment denoising method according to claim 1 in audio identification, which is characterized in that described
One sound insulationg board (5), the second sound insulationg board (7), the first acoustic board (6) and the second acoustic board (8) are installed in residential area and compare comparatively dense
Cell or office building periphery, sound source eliminate the noise to warn by manually warning or phone and the noise of sound source closed or dropped
It makes an uproar.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112197857A (en) * | 2020-09-30 | 2021-01-08 | 广州新静界声学科技股份有限公司 | Noise transmission channel analysis method for machine room provided with multiple devices |
| CN113494959A (en) * | 2020-04-08 | 2021-10-12 | 苏州文泽可智能科技有限公司 | Method for judging noise of plant |
| CN113639854A (en) * | 2021-07-16 | 2021-11-12 | 福建九五检测技术服务有限公司 | Noise detection equipment for noise detection and use method thereof |
| CN115264033A (en) * | 2022-09-22 | 2022-11-01 | 江苏南江减速机有限公司 | Noise reduction protective cover of speed reducer |
-
2017
- 2017-12-05 CN CN201711270689.XA patent/CN109870230A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113494959A (en) * | 2020-04-08 | 2021-10-12 | 苏州文泽可智能科技有限公司 | Method for judging noise of plant |
| CN112197857A (en) * | 2020-09-30 | 2021-01-08 | 广州新静界声学科技股份有限公司 | Noise transmission channel analysis method for machine room provided with multiple devices |
| CN112197857B (en) * | 2020-09-30 | 2022-12-20 | 广州新静界声学科技股份有限公司 | Noise transmission channel analysis method for machine room provided with multiple devices |
| CN113639854A (en) * | 2021-07-16 | 2021-11-12 | 福建九五检测技术服务有限公司 | Noise detection equipment for noise detection and use method thereof |
| CN115264033A (en) * | 2022-09-22 | 2022-11-01 | 江苏南江减速机有限公司 | Noise reduction protective cover of speed reducer |
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