CN104238668A - Method for eliminating computer boosting and shutdown noise - Google Patents
Method for eliminating computer boosting and shutdown noise Download PDFInfo
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- CN104238668A CN104238668A CN201410432423.0A CN201410432423A CN104238668A CN 104238668 A CN104238668 A CN 104238668A CN 201410432423 A CN201410432423 A CN 201410432423A CN 104238668 A CN104238668 A CN 104238668A
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- audio chip
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Abstract
The invention discloses a method for eliminating computer boosting and shutdown noise, and belongs to the technical field of computer audio. The method provided by the invention aims at solving the problem of eliminating the 'pupu' or 'cici' sound noise generated in the boosting power-on moment or shutdown power-off moment of a computer with audio receiving equipment, and has the technical scheme that a power supply module is introduced for an audio chip, and before the computer mainboard system power-on, the power supply module is used for realizing the advanced power supply on an audio chip simulation part, so the audio chip simulation part is powered on in advance relative to the computer main board system, or during the computer mainboard system power-off, the power supply module carries out partial delay power supply on the audio chip simulation part, so the audio chip simulation part realizes the lagging power-off relative to a computer mainboard system.
Description
Technical field
The present invention relates to a kind of computer audio technical field, specifically a kind of method eliminating computer on/off noise.
Background technology
Audio chip inside is generally divided into two parts, and a part is numerical portion, is mainly connected with the chipset of computer motherboard, and another part is simulation part, by audio reception devices such as audio coupler frames connecting with headphone, audio amplifiers.Chip internal circuits structure divides mutually discrete opening numerical portion and simulation part, to reduce electromagnetic crosstalk and to improve performance.Audio digital signals is issued audio chip by chipset, and digital signal is carried out decoding and is converted to continuous print simulating signal by audio chip.Numerical portion and the simulation energize portions of audio chip generally adopt computer motherboard S0 state supply module, namely when computer booting powers on, audio chip powers on simultaneously, and during the tester in power-down state of pass, audio chip power-off simultaneously, adopts this kind of method of supplying power to can produce switching on and shutting down noise.Make troubles to user.
How solving " puff puff " or " titter titter " sound noise that the computing machine with audio reception device produces at start powered on moment or shutdown shutdown transient, is those skilled in the art's problems in the urgent need to address.
Summary of the invention
Technical assignment of the present invention is for above weak point, provides a kind of a kind of method eliminating computer on/off noise of " puff puff " or " titter titter " sound noise produced at start powered on moment or shutdown shutdown transient for the computing machine solved with audio reception device.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of method eliminating computer on/off noise, supply module is introduced to audio chip, before computer motherboard system electrification, by supply module audio chip simulation part divided and power in advance, audio chip simulation part is divided and powers in advance relative to computer motherboard system; Or when computer motherboard system cut-off, by supply module, section retards is simulated to audio chip and power, audio chip simulation part is divided relative to the delayed power-off of computer motherboard system.
S0 state supply module and S3/S5 state supply module are switched mutually by handover module simulates energize portions to audio chip;
Before computer motherboard system electrification, by S3/S5 state supply module audio chip simulation part divided and power;
After computer motherboard system electrification, audio chip simulation energize portions switches to S0 state supply module by handover module and powers.
S0 state supply module and S3/S5 state supply module are switched mutually by handover module simulates energize portions to audio chip;
When computer motherboard system cut-off, the power supply of audio chip simulation part switches to S3/S5 state supply module by handover module by S0 state supply module and powers, and divides carry out delay power-off to audio chip simulation part.
Compared to the prior art a kind of method eliminating computer on/off noise of the present invention, has the following advantages:
1, avoid the situation that audio chip and computer motherboard system power on simultaneously, eliminate audio chip numerical portion and the simulation part current sound that produces of powered on moment simultaneously, namely eliminate start powered on moment and produce " puff puff " or " titter titter " sound;
When 2, avoiding the supply module power-off of S0 state, the situation of the numerical portion of audio chip and the power-off simultaneously of simulation part, eliminates the current sound that audio chip shutdown transient produces, and namely shutdown shutdown transient produces " puff puff " or " titter titter " sound.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further described.
Accompanying drawing 1 is a kind of signal wiring block diagram eliminating the method for computer on/off noise;
Accompanying drawing 2 is a kind of audio chip pinouts eliminating the method for computer on/off noise.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Embodiment 1:
A kind of method eliminating computer on/off noise of the present invention, supply module is introduced to audio chip, before computer motherboard system electrification, by supply module audio chip simulation part divided and power in advance, audio chip simulation part is divided and powers in advance relative to computer motherboard system; Or when computer motherboard system cut-off, by supply module, section retards is simulated to audio chip and power, audio chip simulation part is divided relative to the delayed power-off of computer motherboard system.
Audio digital signals is issued audio chip by chipset, and digital signal is carried out decoding and is converted to continuous print audio analog signals to audio reception device by audio chip.
Embodiment 2:
A kind of method eliminating computer on/off noise of the present invention, supply module is introduced to audio chip, before computer motherboard system electrification, by supply module audio chip simulation part divided and power in advance, audio chip simulation part is divided and powers in advance relative to computer motherboard system; Or when computer motherboard system cut-off, by supply module, section retards is simulated to audio chip and power, audio chip simulation part is divided relative to the delayed power-off of computer motherboard system.
As shown in Figure 1, S0 state supply module and S3/S5 state supply module are switched mutually by handover module and simulate energize portions to audio chip;
Before computer motherboard system electrification, by S3/S5 state supply module audio chip simulation part divided and power;
After computer motherboard system electrification, audio chip simulation energize portions switches to S0 state supply module by handover module and powers.
Avoid the situation that audio chip and computer motherboard system power on simultaneously, eliminate audio chip numerical portion and the simulation part current sound that produces of powered on moment simultaneously, namely eliminate start powered on moment and produce " puff puff " or " titter titter " sound.
S0 state supply module and S3/S5 state supply module are switched mutually by handover module simulates energize portions to audio chip;
When computer motherboard system cut-off, the power supply of audio chip simulation part switches to S3/S5 state supply module by handover module by S0 state supply module and powers, and divides carry out delay power-off to audio chip simulation part.
When avoiding the supply module power-off of S0 state, the situation of the numerical portion of audio chip and the power-off simultaneously of simulation part, eliminates the current sound that audio chip shutdown transient produces, and namely shutdown shutdown transient produces " puff puff " or " titter titter " sound.
As shown in Figure 2, being audio chip simulation part above the cut-off rule in figure, is audio chip numerical portion below cut-off rule.Numerical portion energization pins is DVDD1, DVDD-IO; Simulation part energization pins is AVDD1, AVDD2.
Above-mentioned embodiment is only concrete case of the present invention; scope of patent protection of the present invention includes but not limited to above-mentioned embodiment; any according to the invention a kind of eliminate claims of the method for computer on/off noise and any person of an ordinary skill in the technical field to its suitable change done or replacement, all should fall into scope of patent protection of the present invention.
Claims (3)
1. eliminate the method for computer on/off noise for one kind, it is characterized in that introducing supply module to audio chip, before computer motherboard system electrification, by supply module audio chip simulation part divided and power in advance, audio chip simulation part is divided and powers in advance relative to computer motherboard system; Or when computer motherboard system cut-off, by supply module, section retards is simulated to audio chip and power, audio chip simulation part is divided relative to the delayed power-off of computer motherboard system.
2. a kind of method eliminating computer on/off noise according to claim 1, is characterized in that S0 state supply module and S3/S5 state supply module are switched mutually by handover module and simulates energize portions to audio chip;
Before computer motherboard system electrification, by S3/S5 state supply module audio chip simulation part divided and power;
After computer motherboard system electrification, audio chip simulation energize portions switches to S0 state supply module by handover module and powers.
3. a kind of method eliminating computer on/off noise according to claim 1, is characterized in that S0 state supply module and S3/S5 state supply module are switched mutually by handover module and simulates energize portions to audio chip;
When computer motherboard system cut-off, the power supply of audio chip simulation part switches to S3/S5 state supply module by handover module by S0 state supply module and powers, and divides carry out delay power-off to audio chip simulation part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410432423.0A CN104238668A (en) | 2014-08-29 | 2014-08-29 | Method for eliminating computer boosting and shutdown noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410432423.0A CN104238668A (en) | 2014-08-29 | 2014-08-29 | Method for eliminating computer boosting and shutdown noise |
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| Publication Number | Publication Date |
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| CN104238668A true CN104238668A (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410432423.0A Pending CN104238668A (en) | 2014-08-29 | 2014-08-29 | Method for eliminating computer boosting and shutdown noise |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101087130A (en) * | 2006-06-07 | 2007-12-12 | 英业达股份有限公司 | Audio device protection system |
| US20080204133A1 (en) * | 2007-02-23 | 2008-08-28 | Fontaine Paul A | Circuits and apparatus to reduce transient output noise in an audio amplifier |
| CN201153249Y (en) * | 2008-01-21 | 2008-11-19 | 青岛海信电器股份有限公司 | Silencing circuit for start-up and close-down, audio and video apparatus having the circuit |
| CN101695449A (en) * | 2009-10-30 | 2010-04-21 | 程如中 | Fatigue driving early-warning device and startup module |
| CN202334802U (en) * | 2011-12-01 | 2012-07-11 | 无锡市电子仪表工业有限公司 | STB (Set Top Box) switching-on and switching-off noise elimination circuit |
| US20130003988A1 (en) * | 2011-07-01 | 2013-01-03 | IP Goal Microelectronics (SiChuan) Co., Ltd. | POP noise suppressing circuit and its method |
-
2014
- 2014-08-29 CN CN201410432423.0A patent/CN104238668A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101087130A (en) * | 2006-06-07 | 2007-12-12 | 英业达股份有限公司 | Audio device protection system |
| US20080204133A1 (en) * | 2007-02-23 | 2008-08-28 | Fontaine Paul A | Circuits and apparatus to reduce transient output noise in an audio amplifier |
| CN201153249Y (en) * | 2008-01-21 | 2008-11-19 | 青岛海信电器股份有限公司 | Silencing circuit for start-up and close-down, audio and video apparatus having the circuit |
| CN101695449A (en) * | 2009-10-30 | 2010-04-21 | 程如中 | Fatigue driving early-warning device and startup module |
| US20130003988A1 (en) * | 2011-07-01 | 2013-01-03 | IP Goal Microelectronics (SiChuan) Co., Ltd. | POP noise suppressing circuit and its method |
| CN202334802U (en) * | 2011-12-01 | 2012-07-11 | 无锡市电子仪表工业有限公司 | STB (Set Top Box) switching-on and switching-off noise elimination circuit |
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Application publication date: 20141224 |