CN109889300A - A kind of anti-eavesdrop steals recording device and a kind of interference control method - Google Patents
A kind of anti-eavesdrop steals recording device and a kind of interference control method Download PDFInfo
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- CN109889300A CN109889300A CN201910098796.1A CN201910098796A CN109889300A CN 109889300 A CN109889300 A CN 109889300A CN 201910098796 A CN201910098796 A CN 201910098796A CN 109889300 A CN109889300 A CN 109889300A
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Abstract
The embodiment of the present application discloses a kind of anti-eavesdrop and steals recording device, has outer housing, and high pitch interference loudspeaker are provided in outer housing；The external ultrasonic transmitter of multiple direction of the launch is additionally provided in outer housing, the direction of the launch of each ultrasonic transmitter is different；It is additionally provided with controller, controller connects high pitch interference loudspeaker and each ultrasonic transmitter.Anti-eavesdrop disclosed in the embodiment of the present application steals recording device, solves existing anti-eavesdrop and steals the ultrasonic transmitter recorded and mainly use fixed frequency, is easy the technical issues of inversely cracking.The embodiment of the present application also discloses a kind of interference control method.
Description
Technical field
This application involves field of information security technology more particularly to a kind of anti-eavesdrop to steal recording device and a kind of interference controlling party
Method.
Background technique
It eavesdrops or steals record to refer to using certain technological means, under hidden mode, obtain talk or other sound etc.
The means of effective audio-frequency information.In certain specific places, such as cannot disclosed momentous conference, cannot disclosed commercial negotiation,
Individual privacy place etc., it is especially desirable to which the behavior of record is stolen in prevention eavesdropping.
In the prior art, it is mainly to utilize ultrasonic transmitter transmitting beyond human hearing range that anti-eavesdrop, which steals the means recorded,
Sound wave to interfere recording electronic equipment.However, the audible frequency of ultrasonic transmitter is fixed, energy concentrates on fixed frequency
Point is easy inversely to crack, and anti-eavesdrop, which is stolen, records effect, and experience comfort level difference etc. is unsatisfactory.
Summary of the invention
The embodiment of the present application provides a kind of anti-eavesdrop and steals recording device, solves existing anti-eavesdrop and steals and records mainly using fixing
The ultrasonic transmitter of frequency is easy the technical issues of inversely cracking.The embodiment of the present application also provides a kind of interference controlling parties
Method.
In view of this, the application first aspect, which provides a kind of anti-eavesdrop, steals recording device, there is outer housing, the outer housing
Inside it is provided with high pitch interference loudspeaker；
The external ultrasonic transmitter of multiple direction of the launch, each ultrasonic wave transmitting are additionally provided in the outer housing
The direction of the launch of device is different；
It is additionally provided with controller, the controller connects the high pitch interference loudspeaker and each ultrasonic transmitter.
Preferably, each ultrasonic transmitter is circumferentially evenly arranged, the two neighboring ultrasonic transmitter
Angle between the direction of the launch is identical.
It preferably, further include quantity sound pick-up identical with the ultrasonic transmitter；
The corresponding ultrasonic transmitter of one sound pick-up, is arranged in the corresponding ultrasonic transmitter
In the direction of the launch.
Preferably, the outer housing is specially voice box casing.
Preferably, the ultrasonic transmitter has pinhole filter shell.
The application second aspect provides a kind of interference control method, for controlling any anti-of above-mentioned first aspect offer
Recording device is stolen in eavesdropping, comprising steps of
S1, jamming equipment start sounding interference after, in real time calculate the interference stage interference time；
If S2, the interference time reach the first default duration, stop the sounding interference of the jamming equipment, and counts in real time
Calculate having a rest the time for stage of having a rest；
If S3, the time of having a rest reach the second default duration, start the sounding interference of the jamming equipment, return step
S1；
Wherein, the jamming equipment includes high pitch interference loudspeaker and multiple ultrasonic transmitters.
Preferably, further includes:
It has a rest described in the entrance after the stage, according to the collected sound signal of each sound pick-up, judges each sound pick-up
In corresponding orientation whether someone；
Terminate in the stage of having a rest, into after the interference stage, according to the updated azimuth information, stops pair
The sounding interference of the corresponding ultrasonic transmitter of the sound pick-up of someone in the orientation answered.
Preferably, further includes:
It has a rest described in the entrance after the stage, according to the collected sound signal of each sound pick-up, determines the hair of current speaker
Say volume；
Terminate in the stage of having a rest, into the hair after the interference stage, determined according to the stage of having a rest
It says volume, adjusts the output power of the jamming equipment.
Preferably, further includes:
It has a rest described in the entrance after the stage, according to the collected sound signal of each sound pick-up, determines the sound of current speaker
Audio spectrum signature；
Terminate in the stage of having a rest, into after the interference stage, according to the sound spectrum feature determined, adjusts
Make the audible frequency of the high pitch interference loudspeaker.
Preferably, the sound spectrum feature that the basis is determined modulates the sounding frequency of the high pitch interference loudspeaker
Rate specifically includes:
Human hair acoustic frequency is extracted from the sound spectrum feature determined；
The audible frequency of the high pitch interference loudspeaker is modulated to the order harmonic frequencies of the human hair acoustic frequency extracted.
As can be seen from the above technical solutions, the embodiment of the present application has the advantage that
It in the embodiment of the present application, provides a kind of anti-eavesdrop and steals recording device, outer housing is built-in with high pitch interference loudspeaker and more
A ultrasonic transmitter.Wherein, the audible frequency of high pitch interference loudspeaker is not fixed, and audible frequency can pass through controller
It is controlled, is interfered to generate change frequency, and the setting of ultrasonic transmitter is so that interference has very strong finger
Tropism, the two combine the anti-eavesdrop for making device entirety to steal record effect and greatly enhance.When anti-eavesdrop provided by the embodiments of the present application is stolen
When recording device works, the sound signal of frequency variation will be collected in the electronic equipment for surreptitiously being recorded eavesdropping, this kind of sound signal is opposite
It wants difficulty to crack much in the fixed sound signal of frequency, to prevent the leakage of information, reaches good anti-eavesdrop and steal record effect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that a kind of anti-eavesdrop provided by the embodiments of the present application steals recording device；
Fig. 2 provides a kind of flow chart of the first implementation of interference control method for the embodiment of the present application；
Appended drawing reference: outer housing 1, high pitch interfere loudspeaker 2, ultrasonic transmitter 3, sound pick-up 4.
Specific embodiment
It is clearly and completely described below in conjunction with technical solution of the attached drawing to the embodiment of the present application, it is clear that described
Embodiment be the embodiment of the present application a part of the embodiment, instead of all the embodiments.Based on the reality in the embodiment of the present application
Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts all belongs to
In the range of the embodiment of the present application protection.
In the description of the embodiment of the present application, it should be noted that term " center ", "upper", "lower", "left", "right",
The orientation or positional relationship of the instructions such as "vertical", "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings,
It is merely for convenience of description the embodiment of the present application and simplifies description, rather than the device or element of indication or suggestion meaning must have
There is specific orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limitation to the embodiment of the present application.In addition,
Term " first ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the embodiment of the present application, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, on can understanding as the case may be
State the concrete meaning of term in the embodiment of the present application.
Below referring to Figure 1, Fig. 1 is the structural schematic diagram that a kind of anti-eavesdrop provided by the embodiments of the present application steals recording device.
Firstly, the device has outer housing 1, cylindrical shell body 1 as shown in drawings is can be set into outer housing 1, certainly,
Also other shapes can be set into.It is reserved with enough spaces in outer housing 1, surpasses for high pitch interference loudspeaker 2 to be arranged with multiple
Both jamming equipments of pinger 3 are additionally provided with for controlling these jamming equipments, with these jamming equipments electricity certainly
The controller of connection.
Wherein, the bandwidth of high pitch interference loudspeaker 2 should cover 18k to 25kHz, which is usually to be difficult to listen
It arrives, can be used for that eavesdropping is interfered to steal and record.Meanwhile high pitch interference loudspeaker 2 also can have the ability for playing common music, such as
This, can steal recording device for entire anti-eavesdrop and disguise oneself as common speaker by playing music in some scenarios.Certainly,
To keep camouflage more complete, it can also be pretended on the outer housing 1 of device, outer housing 1 is arranged to voice box casing.
The directive property of ultrasonic transmitter 3 is excellent, therefore, to guarantee that anti-eavesdrop steals the effect recorded, also sets in outer housing 1
It is equipped with the external ultrasonic transmitter 3 of multiple direction of the launch, also, the direction of the launch of each ultrasonic transmitter 3 is different.Such as
This, high pitch interference loudspeaker 2 can apply certain interference in gamut, and ultrasonic transmitter 3 then can be in its direction of the launch
Corresponding region applies the interference being further superimposed, thus, user can according to need, and it is " special to steal record suspect's progress to eavesdropping
Not Zhao Gu ", make the direction of the launch of ultrasonic transmitter 3 against suspicious place.
But more preferably mode is circumferentially to be evenly arranged multiple ultrasonic transmitters 3, sends out two neighboring ultrasonic wave
Angle between the direction of the launch of emitter 3 is identical.For ease of understanding, it can be assumed that 360 degree of circle around the device, then
The direction of the launch of ultrasonic transmitter 3 after being evenly arranged can divide the circle equally, scatter out outward from the center of circle.As shown in Figure 1,
Eight ultrasonic transmitters 3 are evenly distributed in cylindrical shell body 1, and the direction of the launch is just by round eight equal parts.
In the present embodiment, sound pick-up 4 can also be further increased on the basis of above-mentioned.Sound pick-up 4 is primarily to match
Hop controller, to improve the comfort level of user under disturbed condition, specific interference control method will carry out in subsequent embodiment
Explanation.
Sound pick-up 4 quantitatively can be identical as ultrasonic transmitter 3, the corresponding ultrasonic wave transmitting of a sound pick-up 4
Device 3, corresponding sound pick-up 4 are arranged in the direction of the launch of corresponding ultrasonic transmitter 3.As shown in figure 1, in ultrasonic transmitter
Eight sound pick-ups 4 are configured in 3 eight orientation.Sound pick-up 4 can select silicon wheat or capacitor wheat etc. more in specific choice
Kind can acquire the device of heard sound.
Though 3 fixed frequency of ultrasonic transmitter, its audible frequency is also and non-fully constant, but has around a frequency
A degree of fluctuation.For example, the fixed frequency of ultrasonic transmitter 3 is 21kHz, but its practical audible frequency surrounds 21kHz
Fluctuation, once within the scope of fluctuation to heard sound, then it can cause the uncomfortable reaction such as human body dizziness, lather.For this purpose, can use
Pinhole filter shell is arranged for ultrasonic transmitter 3 in sound insulation and filtering material, thus audible caused by filtering out due to fluctuation
Sound reduces the discomfort of human body.
The above are the detailed description that a kind of anti-eavesdrop provided by the embodiments of the present application steals recording device, in the embodiment of the present application,
It provides a kind of anti-eavesdrop and steals recording device, outer housing is built-in with high pitch interference loudspeaker and multiple ultrasonic transmitters.Wherein, high pitch
Interference loudspeaker audible frequency be not it is fixed, audible frequency can be controlled by controller, thus generate variation frequency
Rate is interfered, and the setting of ultrasonic transmitter is so that interference has very strong directive property, and the two, which combines, keeps device whole
Anti-eavesdrop steal record effect greatly enhance.When anti-eavesdrop provided by the embodiments of the present application steals recording device work, surreptitiously recorded
The electronic equipment of eavesdropping will collect the sound signal of frequency variation, this kind of sound signal sound signal fixed relative to frequency wants difficult broken
There are many solution, to prevent the leakage of information, reach good anti-eavesdrop and steal record effect.
Refer to Fig. 2 below, Fig. 2 provides a kind of the first implementation of interference control method for the embodiment of the present application
Flow chart, the anti-eavesdrop that this method is used to control under any implementation provided by the embodiments of the present application steal recording device, the party
Method includes:
Step 201, jamming equipment start sounding interference after, in real time calculate the interference stage interference time.
It should be noted that jamming equipment includes high pitch interference loudspeaker and two kinds of multiple ultrasonic transmitters, in the step
Described " after jamming equipment starts sounding interference ", it should be understood that any jamming equipment start sounding interference think into
Enter the interference stage, calculate interference time in real time, does not need the equal sounding interference of all jamming equipments.
If step 202, interference time reach the first default duration, stop the sounding interference of jamming equipment, and calculates in real time
It has a rest the having a rest the time of stage.
Opposite with the explanation of step 201, only all jamming equipments stop sounding interference, just think to enter and have a rest
Stage.
If step 203, time of having a rest reach the second default duration, start the sounding interference of jamming equipment, return step
201。
In the interference control method of the first implementation provided by the embodiments of the present application, it is provided in interfering process dry
It disturbs the stage and has a rest the stage, realize intermittent jamming pattern.In this way, total interference time can be reduced, reduces anti-eavesdrop and steal
Recording device is to human body bring sense of discomfort.
The first above-mentioned implementation promotes the comfort level of user from the angle of reduction interference time, in the following, the application
Embodiment provides a kind of second of implementation of interference control method, can be changed on the first above-mentioned implementation
Into further comprising following methods.
Reducing disturbance range can be such that the personnel for being disturbed influence reduce, and also improve device to a certain extent to human body
Friendliness.Specific method is as follows:
Step A1, after entering the stage of having a rest, according to the collected sound signal of each sound pick-up, judge each sound pick-up pair
In the orientation answered whether someone.
Step B1, terminate in the stage of having a rest, is corresponding into the sound pick-up for after the interference stage, stopping in corresponding orientation nobody
Ultrasonic transmitter sounding interference.
Referring again to Fig. 1, in Fig. 1, sound signal is collected by sound pick-up, it can be determined that go out sound pick-up pair orientation
Whether someone.Determine present orientation whether someone there are also other methods, such as can be in corresponding orientation setting inductor etc., herein
It is not listed one by one.
After confirming which orientation someone, then sounding interference, other nobody ground can be carried out just for the place of someone
Side can stop sounding interference, to reduce disturbance range.As shown in figure 1, in currently interference stage, the sound acquired by sound pick-up
Signal, can determine east orientation, west to and south orientation be someone (i.e. tri- people of A, B, C), therefore, these orientation are corresponding to pick up
One or several corresponding ultrasonic transmitters of sound device should keep sounding to interfere, and prevent the people in these orientation from stealing
Record, and north orientation is determined as nobody at present, therefore, can stop the sounding interference of the corresponding ultrasonic transmitter in the orientation.
It interferes to further decrease to discomfort caused by human body, following control method can also be set, this method comprises:
Step A2, after entering the stage of having a rest, according to the collected sound signal of each sound pick-up, determine current speaker's
Speech volume.
Step B2, terminate in the stage of having a rest, into after the interference stage, the speech volume determined according to the stage of having a rest is adjusted
The output power of whole jamming equipment.
The speaker of current speaker can be determined according to the collected sound signal of sound pick-up, further according to volume to jamming equipment
Output power be adjusted, current speaker's gives great volume, then increases the output power of jamming equipment, the sound of current speaker
It measures small, then can reduce the output power of jamming equipment.When specific implementation, the ratio between volume and output power can also be set
Example relationship, is adjusted correspondingly under a proportional relationship.In this way, the change of the being adapted to property of interference of jamming equipment, certain
Reduce the discomfort of human body in degree.
On the other hand, the precision of interference can also be further increased by the following method, promoted anti-eavesdrop and stolen the effect recorded
Fruit.
Step A3, after entering the stage of having a rest, according to the collected sound signal of each sound pick-up, determine current speaker's
Sound spectrum feature.
Step B3, terminate in the stage of having a rest, into after the interference stage, according to the sound spectrum feature determined, modulation is high
The audible frequency of sound interference loudspeaker.
It is analyzed by one section of sound signal to current speaker, can determine or extract reflection current speaker
Sound spectrum feature numerical value, which can be the lumped values of audible frequency, can also extract the average value of audible frequency.
For example, can determine that the audible frequency of current speaker A concentrates on 768Hz after extracted, then it can be by interfering loudspeaker to high pitch
Audible frequency is adjusted, and is targetedly precisely interfered the audible frequency of 768Hz.Specific practice can do high pitch
The audible frequency for disturbing loudspeaker is modulated into the higher hamonic wave value of human hair acoustic frequency, for example can choose 25 subfrequencies of 768Hz,
That is 19200Hz, naturally it is also possible to choose 3 times, 5 times, 7 times ... and wait other order harmonic frequencies, realize to human hair acoustic frequency
Accurate interference.
The above are second that the embodiment of the present application provides the improved interference control method under the first above-mentioned implementation
Kind implementation.In this implementation, the intermittent jamming pattern based on the first implementation utilizes of short duration rank of having a rest
Duan Jinhang adopts sound, controls according to the sound of adopting in stage of having a rest the next interference stage, from shortening interference time, reduces
Start on disturbance range, substantially reduce the influence to human body, improves the usage experience of user.In addition, also by acquisition
Sound signal is analyzed, and is precisely interfered for human hair acoustic frequency, and it is more prominent that anti-eavesdrop steals the effect recorded.
The description of the present application and term " first " in above-mentioned attached drawing, " second ", " third ", " the 4th " etc. are (if deposited
) it is to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that use in this way
Data are interchangeable under appropriate circumstances, so that embodiments herein described herein for example can be in addition to illustrating herein
Or the sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that
Cover it is non-exclusive include, for example, containing the process, method, system, product or equipment of a series of steps or units need not limit
In step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, produce
The other step or units of product or equipment inherently.
It should be appreciated that in this application, " at least one (item) " refers to one or more, and " multiple " refer to two or two
More than a."and/or" indicates may exist three kinds of relationships, for example, " A and/or B " for describing the incidence relation of affiliated partner
It can indicate: only exist A, only exist B and exist simultaneously tri- kinds of situations of A and B, wherein A, B can be odd number or plural number.Word
Symbol "/" typicallys represent the relationship that forward-backward correlation object is a kind of "or"." at least one of following (a) " or its similar expression, refers to
Any combination in these, any combination including individual event (a) or complex item (a).At least one of for example, in a, b or c
(a) can indicate: a, b, c, " a and b ", " a and c ", " b and c ", or " a and b and c ", and wherein a, b, c can be individually, can also
To be multiple.
The above, above embodiments are only to illustrate the technical solution of the application, rather than its limitations；Although referring to before
Embodiment is stated the application is described in detail, those skilled in the art should understand that: it still can be to preceding
Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
It modifies or replaces, the spirit and scope of each embodiment technical solution of the application that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of anti-eavesdrop steals recording device, which is characterized in that there is outer housing, high pitch interference loudspeaker is provided in the outer housing
?；
The external ultrasonic transmitter of multiple direction of the launch is additionally provided in the outer housing, each ultrasonic transmitter
The direction of the launch is different；
It is additionally provided with controller, the controller connects the high pitch interference loudspeaker and each ultrasonic transmitter.
2. the apparatus according to claim 1, which is characterized in that each ultrasonic transmitter is circumferentially evenly arranged,
Angle between the direction of the launch of the two neighboring ultrasonic transmitter is identical.
3. the apparatus of claim 2, which is characterized in that further including that quantity is identical with the ultrasonic transmitter picks up
Sound device；
The corresponding ultrasonic transmitter of one sound pick-up, is arranged in the transmitting of the corresponding ultrasonic transmitter
On direction.
4. the apparatus according to claim 1, which is characterized in that the outer housing is specially voice box casing.
5. the apparatus according to claim 1, which is characterized in that the ultrasonic transmitter has pinhole filter shell.
6. a kind of interference control method, which is characterized in that steal record for controlling described in any one of claim 1 to 55 described in any item anti-eavesdrops
Device, comprising steps of
S1, jamming equipment start sounding interference after, in real time calculate the interference stage interference time；
If S2, the interference time reach the first default duration, stop the sounding interference of the jamming equipment, and calculates have a rest in real time
The breath stage has a rest the time；
If S3, the time of having a rest reach the second default duration, start the sounding interference of the jamming equipment, return step S1；
Wherein, the jamming equipment includes high pitch interference loudspeaker and multiple ultrasonic transmitters.
7. according to the method described in claim 6, it is characterized by further comprising:
It has a rest described in the entrance after the stage, according to the collected sound signal of each sound pick-up, judges that each sound pick-up is corresponding
Orientation on whether someone；
Terminate in the stage of having a rest, into after the interference stage, stopping in corresponding orientation nobody sound pick-up pair
The sounding for the ultrasonic transmitter answered interferes.
8. according to the method described in claim 6, it is characterized by further comprising:
It has a rest described in the entrance after the stage, according to the collected sound signal of each sound pick-up, determines the speech sound of current speaker
Amount；
Terminate in the stage of having a rest, into the speech sound after the interference stage, determined according to the stage of having a rest
Amount, adjusts the output power of the jamming equipment.
9. according to the method described in claim 6, it is characterized by further comprising:
It has a rest described in the entrance after the stage, according to the collected sound signal of each sound pick-up, determines the sound audio of current speaker
Spectrum signature；
Terminate in the stage of having a rest, into after the interference stage, according to the sound spectrum feature determined, modulates institute
State the audible frequency of high pitch interference loudspeaker.
10. according to the method described in claim 9, it is characterized in that, the sound spectrum feature that the basis is determined, is adjusted
The audible frequency for making the high pitch interference loudspeaker specifically includes:
Human hair acoustic frequency is extracted from the sound spectrum feature determined；
The audible frequency of the high pitch interference loudspeaker is modulated to the order harmonic frequencies of the human hair acoustic frequency extracted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910098796.1A CN109889300B (en) | 2019-01-31 | 2019-01-31 | Anti-eavesdropping and anti-stealing recording device and interference control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910098796.1A CN109889300B (en) | 2019-01-31 | 2019-01-31 | Anti-eavesdropping and anti-stealing recording device and interference control method |
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| CN109889300A true CN109889300A (en) | 2019-06-14 |
| CN109889300B CN109889300B (en) | 2022-03-22 |
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| CN115426865A (en) * | 2022-08-22 | 2022-12-02 | 广州国保科技有限公司 | Mobile phone shielding cabinet |
| CN116320815A (en) * | 2023-03-22 | 2023-06-23 | 北京目炎盾信息安全技术有限公司 | Recording interference equipment |
| WO2023123452A1 (en) * | 2021-12-31 | 2023-07-06 | 深圳市安卫普科技有限公司 | Interference device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109889300B (en) | 2022-03-22 |
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