CN101398696A - Sound deadening system - Google Patents
Sound deadening system Download PDFInfo
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- CN101398696A CN101398696A CNA2007100305796A CN200710030579A CN101398696A CN 101398696 A CN101398696 A CN 101398696A CN A2007100305796 A CNA2007100305796 A CN A2007100305796A CN 200710030579 A CN200710030579 A CN 200710030579A CN 101398696 A CN101398696 A CN 101398696A
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- electric signal
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a silencing system which essentially comprises a sensing component which is used for sensing a noise signal and converting the noise signal into a first electrical signal, a microprocessor which is connected with the sensing component to receive the first electrical signal and convert the first electrical signal into a same second electrical signal which has opposite phase position with the first electrical signal and a signal generating component which is used for receiving the second electrical signal, converting the second electrical signal into a sound signal and sending the sound signal. The silencing system uses the same sound signal which has opposite phase position with the noise signal of a noise source to effectively reduce the noise by the sound signal destructive interference theory.
Description
Technical field
The present invention relates to a kind of silene system, relate in particular to the silene system that a kind of destructive interference principle of utilizing voice signal is come noise-decreasing.
Background technology
Along with the continuous development of counter, people not only more and more pay close attention to the ever-increasing function of counter, and the problems such as noise of counter are also more and more paid attention to.Because the raising of the efficient of CPU on the mainboard, its heat that distributes also increases thereupon.This distributes unnecessary heat with regard to the bigger fan of required power in cabinet, in order to avoid too high temperature burns out CPU.In general, the fan that power is big more, its noise that sends is also big more, and therefore, the noise problem of eliminating fan is more and more severeer.
The noise of fan mostly is to utilize isolated mode to handle in the previous calculation machine, and this kind mode not only cost increases, and for the system that can't seal, soundproof effect is not good.
Summary of the invention
In view of the above problems, the invention provides the silene system that a kind of destructive interference principle of utilizing voice signal is come noise-decreasing.
In order to achieve the above object, the present invention has adopted following technical scheme: a kind of silene system, and it mainly comprises a sensing component, in order to sensing one noise signal, and converts this noise signal to one first electric signal; One microprocessor is connected with above-mentioned sensing component, receiving above-mentioned first electric signal, and this first electrical signal conversion is become one second electric signal, and this second electric signal and the first electric signal equal and opposite in direction, phase place are opposite; One signal generation component, to receive above-mentioned second electric signal, this second electrical signal conversion is become a voice signal, this voice signal and above-mentioned noise signal equal and opposite in direction, phase place are opposite, and this voice signal transmitted to the noise signal direction, since the destructive interference principle of sound, thus make this voice signal and above-mentioned noise signal cancel out each other, effectively reduced noise.
Preferable, the invention provides a kind of silene system, wherein, described sensing component can be an inductor or a velocity gauge, and described signal generation component and above-mentioned microprocessor electrically connect, and described signal generation component is a loudspeaker; Described sensing component sensed noise signal is by recording the rotating speed of a fan, produce a tach signal, and converts this tach signal to noise signal.
Preferable, the invention provides a kind of silene system, wherein, described microprocessor mainly comprises a receiving element and a processing unit.Described receiving element is in order to receive first electric signal; Described processing unit in order to first electrical signal conversion that will receive become one with the first electric signal equal and opposite in direction, second electric signal that phase place is opposite.
Compared to prior art, silene system of the present invention, by produce one with noise signal equal and opposite in direction, voice signal that phase place is opposite, utilize the destructive interference principle of voice signal, effectively lowered noise.
Description of drawings
Fig. 1 is a block diagram of the present invention
Embodiment
Please refer to shown in Figure 1ly, be block diagram of the present invention.Silene system 10 of the present invention is mainly used in the fan noise of eliminating in the computer cabinet, and it comprises a sensing component 101, a microprocessor 102 and a signal generation component 103.
Wherein, described sensing component 101 can be an inductor or a velocity gauge, in present embodiment, this sensing component 101 is an inductor, this inductor is installed in the computer cabinet, and it produces a tach signal by the rotating speed of a fan, convert this tach signal to noise signal, and convert this noise signal to first electric signal corresponding with this noise signal.
In addition, described microprocessor 102 electrically connects with above-mentioned sensing component 101, this microprocessor 102 mainly comprises a receiving element 1021 and a processing unit 1022, described receiving element 1021 is to receive above-mentioned first electric signal, after this microprocessor 102 receives this first electric signal, 1022 pairs of these first electric signal of its processing unit are handled, this first electric signal is changed into second electric signal, and this second electric signal and the above-mentioned first electric signal equal and opposite in direction, phase place are opposite, and send this second electric signal.
Moreover, described signal generation component 103 is connected with above-mentioned microprocessor 102, this signal generation component 103 is an example with a loudspeaker, this loudspeaker is one electric signal can be transformed into the energy transducer of voice signal, therefore, this loudspeaker can receive second electric signal that above-mentioned microprocessor 102 sends out, and this second electrical signal conversion is become a voice signal, and voice signal and above-mentioned noise signal equal and opposite in direction by the loudspeaker conversion, phase place is opposite, so, this loudspeaker can be write out a prescription this voice signal to transmission to the fan of cabinet, because the destructive interference principle of sound, thereby make this voice signal and above-mentioned noise signal cancel out each other, effectively reduced the fan noise in the cabinet.
Claims (7)
1. a silene system is characterized in that, this silene system mainly comprises:
One sensing component in order to sensing one noise signal, and converts this noise signal to one first electric signal;
One microprocessor, it is connected with this sensing component, and receiving above-mentioned first electric signal and to produce one second electric signal, and this second electric signal and the first electric signal equal and opposite in direction, phase place are opposite;
One signal generation component in order to receive second electric signal, changes into voice signal with this second electric signal.
2. silene system according to claim 1 is characterized in that, described signal generation component and microprocessor electrically connect.
3. silene system according to claim 1 is characterized in that, described sensing component is an inductor.
4. silene system according to claim 1 is characterized in that, described sensing component is a velocity gauge.
5. silene system according to claim 1 is characterized in that, described signal generation component is a loudspeaker.
6. silene system according to claim 1 is characterized in that, described microprocessor mainly comprises a receiving element and a processing unit.
7. silene system according to claim 1 is characterized in that, described sensing component sensed noise signal is by recording the rotating speed of a fan, produce a tach signal, and converts this tach signal to noise signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100305796A CN101398696A (en) | 2007-09-28 | 2007-09-28 | Sound deadening system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100305796A CN101398696A (en) | 2007-09-28 | 2007-09-28 | Sound deadening system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101398696A true CN101398696A (en) | 2009-04-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100305796A Pending CN101398696A (en) | 2007-09-28 | 2007-09-28 | Sound deadening system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101398696A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705268A (en) * | 2012-05-29 | 2012-10-03 | 张秀英 | Noise reduction fan |
| CN102784433A (en) * | 2012-01-10 | 2012-11-21 | 王培人 | Integral sleep improvement device based on multi-sensor information |
| CN102947685B (en) * | 2010-06-17 | 2014-09-17 | 杜比实验室特许公司 | Method and apparatus for reducing the effect of environmental noise on listeners |
| CN104899000A (en) * | 2014-03-03 | 2015-09-09 | 联想(北京)有限公司 | Information processing method and electronic device |
| CN106522116A (en) * | 2016-11-17 | 2017-03-22 | 中国电子科技集团公司第四十研究所 | Sound insulation system and method used for highway and railway |
| CN107484076A (en) * | 2017-09-25 | 2017-12-15 | 联想(北京)有限公司 | A kind of noise reduction control method and electronic equipment |
-
2007
- 2007-09-28 CN CNA2007100305796A patent/CN101398696A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102947685B (en) * | 2010-06-17 | 2014-09-17 | 杜比实验室特许公司 | Method and apparatus for reducing the effect of environmental noise on listeners |
| CN102784433A (en) * | 2012-01-10 | 2012-11-21 | 王培人 | Integral sleep improvement device based on multi-sensor information |
| CN102705268A (en) * | 2012-05-29 | 2012-10-03 | 张秀英 | Noise reduction fan |
| CN104899000A (en) * | 2014-03-03 | 2015-09-09 | 联想(北京)有限公司 | Information processing method and electronic device |
| CN104899000B (en) * | 2014-03-03 | 2019-04-26 | 联想(北京)有限公司 | A kind of information processing method and electronic equipment |
| CN106522116A (en) * | 2016-11-17 | 2017-03-22 | 中国电子科技集团公司第四十研究所 | Sound insulation system and method used for highway and railway |
| CN107484076A (en) * | 2017-09-25 | 2017-12-15 | 联想(北京)有限公司 | A kind of noise reduction control method and electronic equipment |
| CN107484076B (en) * | 2017-09-25 | 2021-04-13 | 联想(北京)有限公司 | Noise reduction control method and electronic equipment |
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Open date: 20090401 |