CN201323647Y - Audio player protector - Google Patents
Audio player protector Download PDFInfo
- Publication number
- CN201323647Y CN201323647Y CNU2008202235001U CN200820223500U CN201323647Y CN 201323647 Y CN201323647 Y CN 201323647Y CN U2008202235001 U CNU2008202235001 U CN U2008202235001U CN 200820223500 U CN200820223500 U CN 200820223500U CN 201323647 Y CN201323647 Y CN 201323647Y
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- CN
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- Prior art keywords
- sound equipment
- audio
- signal
- protector
- filter
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
The utility model discloses an audio player protector which comprises an audio signal identification module which is connected with an audio output end and a noise signal generation module which is connected with an audio input end. When the audio player does not play music for all reasons, the audio protector is self started, to generate an interference signal and send the signal into the audio player, so that an audio speaker works in the noise state that people cannot hear and the audio signal outside cannot enter the audio player, thereby playing the role of protection and preventing secrete revealing.
Description
Technical field
The utility model relates to a kind of sound equipment protective device, relates in particular to a kind of sound equipment protector that prevents that information from being divulged a secret by sound equipment.
Background technology
Along with people's material and cultural life improves day by day.Radical change has also taken place in people's work, life style, in the time of usually with amusement and recreation, carries out a few thing and exchanges and commercial activity.As places such as hotel, hotel, restaurant, teahouse be that people select to get together, the place to go of business negotiation, leisure, amusement.Nature, bound beautiful music is accompanied by the carrying out of these activities.The loud speaker of sound equipment is not when having audio signal output, it is exactly a pick-up, can convert all sound signals in the place to the signal of telecommunication propagates at transmission line, and generation electromagnetic radiation, away from 10 meters in the place, receiver only need be done simple processing and amplifying, just the clear conversation content of hearing of energy; Loud speaker has become fearful tapping device! Generally speaking, to the not special control of the sound equipment of playing back music, at this moment, carry out activities such as various business negotiations, secret negotiations, conclave as people, the content that people talked is just propagated by other people eavesdropping the result who causes tremendous loss and be difficult to expect easily by sound equipment.So, sound equipment is caused the protection of divulging a secret, we can not be ignored.Because acoustic product just is being widely applied in our work, life, and corresponding security product is almost 0 at present.Therefore, prevent in these place secret leakings, very urgent.
The utility model content
The purpose of this utility model is to overcome the problems referred to above that sound equipment of the prior art in use exists, and a kind of sound equipment protector is provided.In the utility model; when sound equipment because a variety of causes not during playing back music; start the utility model voluntarily; produce interference signal and send into sound equipment; make the sound equipment speaker operation at the unheard noise state of people; make extraneous sound signal can not import sound equipment into, thereby played protective effect, prevented to divulge a secret.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of sound equipment protector is characterized in that: comprise audio signal identification module that is connected with the sound equipment output and the noise signal generation module that is connected with the sound equipment input.
Described audio signal identification module comprises singlechip controller, the filter that is connected with singlechip controller, the differential amplifier that is connected with filter, the wave detector that is connected with differential amplifier, the voltage comparator that is connected with wave detector, sensitivity degree adjuster that is connected with voltage comparator and the delay circuit that is connected with sensitivity degree adjuster.
Described noise signal generation module comprises that noise signal produces generator, the filter that is connected with noise signal generation generator, signal amplifier and the audio frequency amplifier that is connected with signal amplifier, the volume adjuster that is connected with filter.
Adopt advantage of the present utility model to be:
In the utility model, the audio signal identification module with the source of sound power amplifier of stereo set take out audio signal carry out filtering, amplification, detection, voltage ratio, time-delay, thereby controlled signal, simultaneously with audio signal output to loud speaker, allow speaker operation.When music or speech, the sound equipment protector does not add noise; When no music; the noise signal of noise signal generation module adds the interference signal that sound equipment produces 300HZ-20KHZ by output; under the control of audio signal; with this interference signal input sound equipment; make the sound equipment speaker operation at the unheard noise state of people; make extraneous sound signal can not import sound equipment into, thereby played protective effect, prevented to divulge a secret.
Description of drawings
Fig. 1 is the utility model theory structure schematic diagram
Embodiment
A kind of sound equipment protector comprises audio signal identification module that is connected with the sound equipment output and the noise signal generation module that is connected with the sound equipment input.Wherein, the audio signal identification module comprises singlechip controller, the filter that is connected with singlechip controller, the differential amplifier that is connected with filter, the wave detector that is connected with differential amplifier, the voltage comparator that is connected with wave detector, sensitivity degree adjuster that is connected with voltage comparator and the delay circuit that is connected with sensitivity degree adjuster.The noise signal generation module comprises that noise signal produces generator, the filter that is connected with noise signal generation generator, signal amplifier and the audio frequency amplifier that is connected with signal amplifier, the volume adjuster that is connected with filter.
Operation principle of the present utility model is as follows:
In the utility model, the audio signal identification module with the source of sound power amplifier of stereo set take out audio signal carry out filtering, amplification, detection, voltage ratio, time-delay, thereby controlled signal, simultaneously with audio signal output to loud speaker, allow speaker operation.When music or speech, the sound equipment protector does not add noise; When no music; the noise signal of noise signal generation module adds the interference signal that sound equipment produces 300HZ-20KHZ by output; under the control of audio signal; with this interference signal input sound equipment; make the sound equipment speaker operation at the unheard noise state of people; make extraneous sound signal can not import sound equipment into, thereby played protective effect, prevented to divulge a secret.
Obviously; those of ordinary skill in the art is according to technological know-how of being grasped and customary means; according to above said content, can also make the various ways that does not break away from the utility model basic fundamental thought, these pro forma conversion are all within protection range of the present utility model.
Claims (3)
1, a kind of sound equipment protector is characterized in that: comprise audio signal identification module that is connected with the sound equipment output and the noise signal generation module that is connected with the sound equipment input.
2, sound equipment protector according to claim 1 is characterized in that: described audio signal identification module comprises singlechip controller, the filter that is connected with singlechip controller, the differential amplifier that is connected with filter, the wave detector that is connected with differential amplifier, the voltage comparator that is connected with wave detector, sensitivity degree adjuster that is connected with voltage comparator and the delay circuit that is connected with sensitivity degree adjuster.
3, sound equipment protector according to claim 1 is characterized in that: described noise signal generation module comprises that noise signal produces generator, the filter that is connected with noise signal generation generator, signal amplifier and the audio frequency amplifier that is connected with signal amplifier, the volume adjuster that is connected with filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202235001U CN201323647Y (en) | 2008-12-18 | 2008-12-18 | Audio player protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202235001U CN201323647Y (en) | 2008-12-18 | 2008-12-18 | Audio player protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201323647Y true CN201323647Y (en) | 2009-10-07 |
Family
ID=41161018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202235001U Expired - Lifetime CN201323647Y (en) | 2008-12-18 | 2008-12-18 | Audio player protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201323647Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102685640A (en) * | 2012-05-21 | 2012-09-19 | 成都立鑫新技术科技有限公司 | Anti-secret leakage device for passive sound box |
-
2008
- 2008-12-18 CN CNU2008202235001U patent/CN201323647Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102685640A (en) * | 2012-05-21 | 2012-09-19 | 成都立鑫新技术科技有限公司 | Anti-secret leakage device for passive sound box |
| CN102685640B (en) * | 2012-05-21 | 2015-08-19 | 成都立鑫新技术科技有限公司 | Anti-secret leakage device for passive sound box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091007 |