CN108389572A - Adaptive sound masking system - Google Patents
Adaptive sound masking system Download PDFInfo
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- CN108389572A CN108389572A CN201810335043.3A CN201810335043A CN108389572A CN 108389572 A CN108389572 A CN 108389572A CN 201810335043 A CN201810335043 A CN 201810335043A CN 108389572 A CN108389572 A CN 108389572A
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
- A61B5/0077—Devices for viewing the surface of the body, e.g. camera, magnifying lens
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
- A61B5/1116—Determining posture transitions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/48—Other medical applications
- A61B5/4806—Sleep evaluation
- A61B5/4809—Sleep detection, i.e. determining whether a subject is asleep or not
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6887—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient mounted on external non-worn devices, e.g. non-medical devices
- A61B5/6889—Rooms
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1781—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1785—Methods, e.g. algorithms; Devices
- G10K11/17861—Methods, e.g. algorithms; Devices using additional means for damping sound, e.g. using sound absorbing panels
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/108—Communication systems, e.g. where useful sound is kept and noise is cancelled
- G10K2210/1081—Earphones, e.g. for telephones, ear protectors or headsets
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/116—Medical; Dental
Abstract
The present invention relates to a kind of adaptive sound masking systems, including：Sensing equipment is touched, setting is used to detect the number that sleep personnel's movement range within a preset time interval is more than the action of limitation, to be exported as shake-up total degree with sleep personnel；Timing device is arranged near the shake-up sensing equipment, for providing Clocked operation for the shake-up sensing equipment；MMC storage devices are arranged near the shake-up sensing equipment, for storing preset times threshold value；First state identification equipment is connect with the shake-up sensing equipment and the MMC storage devices respectively, for when the shake-ups total degree is more than or equal to the preset times threshold value, sending out first and shallow sleeping identification signal.By means of the invention it is possible to realize the orientation counteracting processing to sound.
Description
Technical field
The present invention relates to medical instruments field more particularly to a kind of adaptive sound masking systems.
Background technology
For the personnel of sound sensitive type, if often there is sound interference in sleep environment, it will be always maintained at
In the state of being difficult sleep, therefore, many sound shielding devices are developed in succession, for helping sound quick under sleep environment
The personnel of sense type rapidly enter sleep, avoid enter into the predicament of wakefulness state.
However, due to various sound interference Source Type differences in reality, the various interference sounds of generation are also entirely different, and
Current sound shielding device design principle is more coarse, and the signal using shielding is fixed, leads to not adapt to various complexity
Sleep environment so that sound shield effectiveness is bad, cannot be satisfied the demand of various types personnel, and therefore, it is necessary to a kind of adaptive
The sound shielding mechanism answered disclosure satisfy that the demand of the personnel of all kinds of sound sensitive types.
Invention content
To solve the above-mentioned problems, the present invention provides a kind of adaptive sound masking systems, can be to the variation at scene
The voice signal that severe degree transfinites is detected, and is formulated corresponding canceling sound pattern and handled, to improve peace and quiet
The stability of sleep environment, wherein it is particularly critical, establish the sleep based on physical detection pattern and image detection pattern
The double mode testing mechanism of personnel's movement range is realized and is accurately identified to sleep personnel's current state, is subsequent sound screen
It covers and relevant reference data is provided.
According to an aspect of the present invention, a kind of adaptive sound masking system is provided, the system comprises：
Sensing equipment is touched, is arranged with sleep personnel, for detecting sleep personnel action within a preset time interval
Amplitude is more than the number of the action of limitation, to be exported as shake-up total degree；
Timing device is arranged near the shake-up sensing equipment, for providing timing behaviour for the shake-up sensing equipment
Make；
MMC storage devices are arranged near the shake-up sensing equipment, for storing preset times threshold value；
First state identification equipment is connect with the shake-up sensing equipment and the MMC storage devices respectively, in institute
State touch total degree be more than or equal to the preset times threshold value when, send out first it is shallow sleep identification signal, be additionally operable in the shake-up
When total degree is more than the preset times threshold value, sends out first and sleep soundly identification signal,
Indoor collecting device, setting carry out sleep personnel's Image Acquisition in wall top center for facing sleep personnel direction,
To obtain and export multiframe sleep personnel's image；
Data extraction device is connect with the indoor collecting device, for receiving multiframe sleep personnel's image, to each frame
Sleep personnel's image executes following processing：Piecemeal processing is carried out to obtain multiple same sizes to each frame sleep personnel's image
Image block detects drastic change degree of each image block relative to image block around, by drastic change degree be more than limitation one or
Multiple images block is as one or more to be detected piece of outputs；Wherein, the data extraction device is directed to each to be detected piece
Execute following detection operation：The Y-component of each pixel, U components and V component in described to be detected piece are obtained, is determined each
The product of the Y-component of a pixel, U components and V component is using the product characteristic value as each pixel, when some pixel
The product characteristic value mean value that the product characteristic value of point deviates each pixel around it is more than default when deviateing threshold value, determine described in
Pixel is drastic change pixel, exports the quantity of the drastic change pixel in the block to be detected；
Image authentication equipment is connect with the data extraction device, for each frame sleep personnel's image, is added up wherein each
The quantity of a to be detected piece of drastic change pixel is to obtain the drastic change pixel sum of the sleep personnel image, when the sleep
When the drastic change pixel sum of personnel's image is more than or equal to preset quantity threshold value, determine that the sleep personnel image is fault graph
Picture, otherwise, it determines the sleep personnel image is non-faulting image.
Therefore, the present invention at least has following important inventive point：
(1) the pixel testing mechanism for using YUV color spaces, realizes the high-precision fault detect to image to be identified,
To avoid subsequently unnecessary identifying processing is carried out to fault picture, the accuracy of image recognition is further increased；
(2) the double mode detection of sleep personnel's movement range based on physical detection pattern and image detection pattern is established
Mechanism improves the accuracy of detection of sleep personnel's current state；
(3) using the voice signal of waveform opposite with the voice signal that currently variation severe degree transfinites to currently changing play
The voice signal that strong degree transfinites carries out canceling sound processing, ensure that the noise baffle effect under night-environment.
Description of the drawings
Embodiment of the present invention is described below with reference to attached drawing, wherein：
Fig. 1 is to be shown according to the structure of the sound shielding device of the adaptive sound masking system shown in embodiment of the present invention
It is intended to.
Specific implementation mode
The embodiment of the adaptive sound screen method of the present invention is described in detail below with reference to accompanying drawings.
Since current sound shielding device is all customization, adaptive ability is poor, and it is major type of can only to cope with some
Interference sound, and various interference sounds can not be coped with, and the sleep environment of reality will appear various situations, if once sleeping ring
Border is complex, or the interference sound type that current sound shielding device can not overcome occurs, then current sound screen
Covering equipment will be at a loss as to what to do.
In order to overcome above-mentioned deficiency, the present invention to build a kind of adaptive sound masking system, it is capable of providing stable, peace
Quiet sleep environment meets the needs of all kinds of sound sensitive type personnel are to sleep environment.
Adaptive sound masking system according to embodiments of the present invention includes：
Sensing equipment is touched, is arranged with sleep personnel, for detecting sleep personnel action within a preset time interval
Amplitude is more than the number of the action of limitation, to be exported as shake-up total degree；
Timing device is arranged near the shake-up sensing equipment, for providing timing behaviour for the shake-up sensing equipment
Make；
MMC storage devices are arranged near the shake-up sensing equipment, for storing preset times threshold value；
First state identification equipment is connect with the shake-up sensing equipment and the MMC storage devices respectively, in institute
State touch total degree be more than or equal to the preset times threshold value when, send out first it is shallow sleep identification signal, be additionally operable in the shake-up
When total degree is more than the preset times threshold value, sends out first and sleep soundly identification signal,
Indoor collecting device, setting carry out sleep personnel's Image Acquisition in wall top center for facing sleep personnel direction,
To obtain and export multiframe sleep personnel's image；
Data extraction device is connect with the indoor collecting device, for receiving multiframe sleep personnel's image, to each frame
Sleep personnel's image executes following processing：Piecemeal processing is carried out to obtain multiple same sizes to each frame sleep personnel's image
Image block detects drastic change degree of each image block relative to image block around, by drastic change degree be more than limitation one or
Multiple images block is as one or more to be detected piece of outputs；Wherein, the data extraction device is directed to each to be detected piece
Execute following detection operation：The Y-component of each pixel, U components and V component in described to be detected piece are obtained, is determined each
The product of the Y-component of a pixel, U components and V component is using the product characteristic value as each pixel, when some pixel
The product characteristic value mean value that the product characteristic value of point deviates each pixel around it is more than default when deviateing threshold value, determine described in
Pixel is drastic change pixel, exports the quantity of the drastic change pixel in the block to be detected；
Image authentication equipment is connect with the data extraction device, for each frame sleep personnel's image, is added up wherein each
The quantity of a to be detected piece of drastic change pixel is to obtain the drastic change pixel sum of the sleep personnel image, when the sleep
When the drastic change pixel sum of personnel's image is more than or equal to preset quantity threshold value, determine that the sleep personnel image is fault graph
Picture, otherwise, it determines the sleep personnel image is non-faulting image；
Second state recognition equipment is set with described image authentication equipment, the timing device and the indoor acquisition respectively
Standby connection excludes each fault picture for receiving multiframe sleep personnel's image in sleeping personnel's image from the multiframe
To obtain remaining multiple images frame, and motion amplitude analysis is carried out to sleep personnel based on the remaining multiple images frame, with
In prefixed time interval sleep personnel there are motion amplitude be more than limitation the case where when, send out second it is shallow sleep identification signal, also use
In within a preset time interval sleep personnel there is no motion amplitude be more than limitation the case where when, send out second sleep soundly identification letter
Number；
Starting device is shielded, is connect respectively with the first state identification equipment and the second state recognition equipment, is used
In receive described first it is shallow sleep identification signal and receive described second it is shallow sleep identification signal when, control sound shielding device
Into automatic shield pattern, it is additionally operable to receiving the first sound sleep identification signal or receiving the second sound sleep identification letter
Number when, control sound shielding device exit automatic shield pattern；
Sound shielding device is connect with the shielding starting device, for executing following operation under automatic shield pattern：
It is detected to currently changing the voice signal that severe degree transfinites, is carried out to currently changing the voice signal that severe degree transfinites
Baffle processing；
Wherein, in the sound shielding device, screen is oriented to currently changing the voice signal that severe degree transfinites
Covering processing includes：Using the voice signal of waveform opposite with the voice signal that currently variation severe degree transfinites to currently changing play
The voice signal that strong degree transfinites carries out canceling sound processing.
Then, continue that the concrete structure of the adaptive sound masking system of the present invention is further detailed.
In the adaptive sound masking system：
As shown in Figure 1, the sound shielding device may be disposed at user Er Nei, may include instrument case 5, left and right connection
Line 3 and 4, cock body 1 and cock body control unit 2, cock body 1 and cock body control unit 2 respectively have one group in left and right sides.
The sound shielding device includes sound generator, is believed for generating the sound to transfinite with current variation severe degree
The voice signal of number opposite waveform.
In the adaptive sound masking system：
The sound shielding device includes voice detector, for currently change voice signal that severe degree transfinites into
Row detection.
Can also include in the adaptive sound masking system：
Forms driving equipment is connect with the first state identification equipment and the second state recognition equipment respectively；
Wherein, the forms driving equipment is used to shallow sleep identification signal and receive described second receiving described first
It is shallow when sleeping identification signal, it is automatic that forms is driven to carry out closing window operation.
And in the adaptive sound masking system：
The forms driving equipment is additionally operable to receiving the first sound sleep identification signal or receiving described second deeply
It is automatic that forms is driven to carry out fenestration procedure when sleeping identification signal.
Adaptive sound screen method according to embodiments of the present invention includes：
Using sensing equipment is touched, it is arranged with sleep personnel, for detecting the personnel that sleep within a preset time interval
Movement range is more than the number of the action of limitation, to be exported as shake-up total degree；
Using timing device, it is arranged near the shake-up sensing equipment, based on being provided for the shake-up sensing equipment
When operate；
Using MMC storage devices, it is arranged near the shake-up sensing equipment, for storing preset times threshold value；
Using first state identification equipment, it connect, is used for the shake-up sensing equipment and the MMC storage devices respectively
The shake-up total degree be more than or equal to the preset times threshold value when, send out first it is shallow sleep identification signal, be additionally operable to described
When touching total degree and being more than the preset times threshold value, sends out first and sleep soundly identification signal,
Using indoor collecting device, setting carries out sleep personnel's image in wall top center for facing sleep personnel direction
Acquisition, to obtain and export multiframe sleep personnel's image；
It using data extraction device, is connect with the indoor collecting device, for receiving multiframe sleep personnel's image, to every
One frame is slept, and the execution of personnel's image is following to be handled：It is multiple identical big to obtain to carry out piecemeal processing to each frame sleep personnel's image
Small image block detects drastic change degree of each image block relative to image block around, is more than the one of limitation by drastic change degree
A or multiple images block is as one or more to be detected piece of outputs；Wherein, the data extraction device is to be checked for each
It surveys block and executes following detection operation：The Y-component of each pixel, U components and V component in described to be detected piece are obtained, is determined
The product of the Y-component of each pixel, U components and V component is using the product characteristic value as each pixel, when some
When the product characteristic value mean value that the product characteristic value of pixel deviates each pixel around it is more than default deviation threshold value, determine
The pixel is drastic change pixel, exports the quantity of the drastic change pixel in the block to be detected；
It using image authentication equipment, is connect with the data extraction device, for each frame sleep personnel's image, adds up it
In each to be detected piece drastic change pixel quantity to obtain the drastic change pixel sum of the sleep personnel image, when described
When the drastic change pixel sum of sleep personnel's image is more than or equal to preset quantity threshold value, determine that the sleep personnel image is failure
Image, otherwise, it determines the sleep personnel image is non-faulting image；
Using the second state recognition equipment, adopted respectively with described image authentication equipment, the timing device and the interior
Collect equipment connection, for receiving multiframe sleep personnel's image, each failure is excluded in sleeping personnel's image from the multiframe
Image carries out motion amplitude analysis based on the remaining multiple images frame to obtain remaining multiple images frame to sleep personnel,
With sleep within a preset time interval personnel there are motion amplitude be more than limitation the case where when, send out second it is shallow sleep identification signal,
When the case where personnel that are additionally operable to sleep within a preset time interval there is no motion amplitude are more than limitation, send out second and sleep soundly identification
Signal；
Using shielding starting device, connect respectively with the first state identification equipment and the second state recognition equipment
Connect, for receive described first it is shallow sleep identification signal and receive described second it is shallow sleep identification signal when, control sound screen
It covers equipment and enters automatic shield pattern, be additionally operable to receiving the first sound sleep identification signal or receiving second sound sleep
When identification signal, control sound shielding device exits automatic shield pattern；
Using sound shielding device, it is connect with the shielding starting device, it is following for being executed under automatic shield pattern
Operation：It is detected to currently changing the voice signal that severe degree transfinites, believes currently changing the sound that severe degree transfinites
Number it is oriented shielding processing；
Wherein, in the sound shielding device, screen is oriented to currently changing the voice signal that severe degree transfinites
Covering processing includes：Using the voice signal of waveform opposite with the voice signal that currently variation severe degree transfinites to currently changing play
The voice signal that strong degree transfinites carries out canceling sound processing.
Then, continue that the specific steps of the adaptive sound screen method of the present invention are further detailed.
In the adaptive sound screen method：
The sound shielding device may be disposed at user Er Nei, and the sound shielding device includes sound generator, use
In the voice signal of generation waveform opposite with the voice signal that current variation severe degree transfinites.
In the adaptive sound screen method：
The sound shielding device includes voice detector, for currently change voice signal that severe degree transfinites into
Row detection.
The adaptive sound screen method can also include：
Using forms driving equipment, connect respectively with the first state identification equipment and the second state recognition equipment
It connects；
Wherein, the forms driving equipment is used to shallow sleep identification signal and receive described second receiving described first
It is shallow when sleeping identification signal, it is automatic that forms is driven to carry out closing window operation.
In the adaptive sound screen method：
The forms driving equipment is additionally operable to receiving the first sound sleep identification signal or receiving described second deeply
It is automatic that forms is driven to carry out fenestration procedure when sleeping identification signal.
In addition, in the adaptive sound screen method, the shake-up sensing equipment includes analog-digital converter, for that will connect
The analog quantity of the movement range of the sleep personnel received is converted to digital quantity, and the analog-digital converter is 16 bit pads.
Analog-digital converter, that is, A/D converter or abbreviation ADC, it is digital signal to typically refer to one by analog-signal transitions
Electronic component.Common analog-digital converter is the digital signal that an input voltage signal is converted to an output.Due to
Digital signal itself does not have practical significance, is merely representative of a relative size.Therefore any one analog-digital converter is required for one
A standard with reference to analog quantity as conversion, relatively common reference standard are maximum convertible signal magnitude.And export
Digital quantity then indicates size of the input signal relative to reference signal.
The resolution ratio of analog-digital converter refers to that, for the analog signal in allowable range, it can export discrete digital
The number of signal value.These signal values are usually stored with binary number, therefore resolution ratio warp commonly uses bit as unit, and this
The number of a little centrifugal pumps is 2 power exponent.For example, an analog-digital converter with 8 bit resolutions can believe simulation
256 different centrifugal pumps (because 2^8=256) number are encoded into, from 0 to 255 (i.e. signless integer) or from -128 to 127
(i.e. signed integer), it is any as using, then depend on specific application.
Adaptive sound masking system using the present invention is difficult to keep stable skill for sleep environment in the prior art
Art problem using the pixel testing mechanism of YUV color spaces, realizes the high-precision fault detect to image to be identified first,
To avoid subsequently unnecessary identifying processing is carried out to fault picture, the accuracy of image recognition is further increased, secondly, is established
The double mode testing mechanism of sleep personnel's movement range based on physical detection pattern and image detection pattern, improves sleep
The accuracy of detection of personnel's current state uses opposite with the voice signal that currently variation severe degree transfinites on this basis
The voice signal of waveform carries out canceling sound processing to currently changing the voice signal that severe degree transfinites, and ensure that night-environment
Under noise baffle effect, to efficiently solve above-mentioned technical problem.
It is understood that although the present invention has been disclosed in the preferred embodiments as above, above-described embodiment not to
Limit the present invention.For any person skilled in the art, without departing from the scope of the technical proposal of the invention,
Many possible changes and modifications all are made to technical solution of the present invention using the technology contents of the disclosure above, or are revised as
With the equivalent embodiment of variation.Therefore, every content without departing from technical solution of the present invention is right according to the technical essence of the invention
Any simple modifications, equivalents, and modifications made for any of the above embodiments still fall within the range of technical solution of the present invention protection
It is interior.
Claims (5)
1. a kind of adaptive sound masking system, which is characterized in that the system comprises：
Sensing equipment is touched, is arranged with sleep personnel, for detecting personnel's movement range of sleeping within a preset time interval
More than the number of the action of limitation, to be exported as shake-up total degree；
Timing device is arranged near the shake-up sensing equipment, for providing Clocked operation for the shake-up sensing equipment；
MMC storage devices are arranged near the shake-up sensing equipment, for storing preset times threshold value；
First state identification equipment is connect with the shake-up sensing equipment and the MMC storage devices respectively, for being touched described
When dynamic total degree is more than or equal to the preset times threshold value, send out first it is shallow sleep identification signal, be additionally operable to touch total time described
When number is more than the preset times threshold value, sends out first and sleep soundly identification signal,
Indoor collecting device, setting carry out sleep personnel's Image Acquisition, to obtain in wall top center for facing sleep personnel direction
It obtains and exports multiframe sleep personnel's image；
Data extraction device is connect with the indoor collecting device, for receiving multiframe sleep personnel's image, is slept to each frame
Personnel's image executes following processing：Piecemeal processing is carried out to obtain the image of multiple same sizes to each frame sleep personnel's image
Block detects drastic change degree of each image block relative to image block around, is more than the one or more of limitation by drastic change degree
Image block is as one or more to be detected piece of outputs；Wherein, the data extraction device is for each to be detected piece execution
Detection operation below：The Y-component of each pixel, U components and V component in described to be detected piece are obtained, determines each picture
The product of the Y-component of vegetarian refreshments, U components and V component is using the product characteristic value as each pixel, when some pixel
When the product characteristic value mean value that product characteristic value deviates each pixel around it is more than default deviation threshold value, the pixel is determined
Point is drastic change pixel, exports the quantity of the drastic change pixel in the block to be detected；
Image authentication equipment is connect with the data extraction device, for each frame sleep personnel's image, adds up wherein each wait for
The quantity of the drastic change pixel of detection block is to obtain the drastic change pixel sum of the sleep personnel image, as the sleep personnel
When the drastic change pixel sum of image is more than or equal to preset quantity threshold value, determine that the sleep personnel image is fault picture, it is no
Then, determine that the sleep personnel image is non-faulting image；
Second state recognition equipment connects with described image authentication equipment, the timing device and the indoor collecting device respectively
It connects, for receiving multiframe sleep personnel's image, each fault picture is excluded to obtain in sleeping personnel's image from the multiframe
Remaining multiple images frame is obtained, and motion amplitude analysis is carried out to sleep personnel based on the remaining multiple images frame, to preset
In time interval sleep personnel there are motion amplitude be more than limitation the case where when, send out second it is shallow sleep identification signal, be additionally operable to
When the case where sleep personnel there is no motion amplitude are more than limitation in prefixed time interval, send out second and sleep soundly identification signal；
Starting device is shielded, is connect respectively with the first state identification equipment and the second state recognition equipment, is used for
Receive described first it is shallow sleep identification signal and receive described second shallow when sleeping identification signal, control sound shielding device enters
Automatic shield pattern is additionally operable to receiving the first sound sleep identification signal or receiving the second sound sleep identification signal
When, control sound shielding device exits automatic shield pattern；
Sound shielding device is connect with the shielding starting device, for executing following operation under automatic shield pattern：To working as
The voice signal that preceding variation severe degree transfinites is detected, and is oriented to currently changing the voice signal that severe degree transfinites
Shielding processing；
Wherein, it in the sound shielding device, is oriented at shielding to currently changing the voice signal that severe degree transfinites
Reason includes：Using the voice signal of waveform opposite with the voice signal that currently variation severe degree transfinites to currently changing violent journey
The voice signal that spending transfinites carries out canceling sound processing.
2. adaptive sound masking system as described in claim 1, it is characterised in that：
The sound shielding device includes sound generator, for generating the voice signal phase to transfinite with current variation severe degree
The voice signal of anti-waveform.
3. adaptive sound masking system as claimed in claim 2, it is characterised in that：
The sound shielding device includes voice detector, for being examined to currently changing the voice signal that severe degree transfinites
It surveys.
4. adaptive sound masking system as claimed in claim 3, which is characterized in that further include：
Forms driving equipment is connect with the first state identification equipment and the second state recognition equipment respectively；
Wherein, the forms driving equipment be used for receive described first it is shallow sleep identification signal and receive described second shallow sleep
It is automatic that forms is driven to carry out closing window operation when identification signal.
5. the adaptive sound masking system as described in claim 1-4 is any, it is characterised in that：
The forms driving equipment is additionally operable to receiving the first sound sleep identification signal or receiving the second sound sleep knowledge
It is automatic that forms is driven to carry out fenestration procedure when level signal.
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| CN201810335043.3A CN108389572A (en) | 2018-04-15 | 2018-04-15 | Adaptive sound masking system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108685640A (en) * | 2018-04-15 | 2018-10-23 | 周群 | Adaptive sound screen method |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108685640A (en) * | 2018-04-15 | 2018-10-23 | 周群 | Adaptive sound screen method |
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