CN102547528A - Booting moment mute circuit - Google Patents
Booting moment mute circuit Download PDFInfo
- Publication number
- CN102547528A CN102547528A CN201210001514XA CN201210001514A CN102547528A CN 102547528 A CN102547528 A CN 102547528A CN 201210001514X A CN201210001514X A CN 201210001514XA CN 201210001514 A CN201210001514 A CN 201210001514A CN 102547528 A CN102547528 A CN 102547528A
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- circuit
- signal line
- mute
- control circuit
- moment
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Abstract
The invention provides a booting moment mute circuit, relating to the technical field of audio processing. The booting moment mute circuit comprises an audio output circuit, a player main control circuit and a first signal line; one end of the first signal line is connected with the signal output port of the audio output circuit; the other end of the first signal line is connected with the signal input port of the player main control circuit; the improvements are as follows: a mute control circuit and a second signal line are further arranged; one end of the second signal line is connected with the mute control circuit; and the other end of the second signal line is connected with the first signal line. According to the booting moment mute circuit with the structure, the mute control circuit filters out pulses generated by the audio output circuit on the booting moment, so that the booting moment sound cannot generate momentary noise, therefore the playing quality is improved, and playing equipment is also protected by the prevention from noise damage simultaneously.
Description
[technical field]
The present invention relates to the audio signal processing technique field, relate in particular to a kind of start moment noise treatment circuit.
[background technology]
At present, in the electronics playback equipment, the moment of start; The audio output port of audio output circuit has pulse output in the moment of audio frequency output; Through getting into sound equipment after the audio amplifier circuit amplification, get into sound equipment and can produce the moment harsh noise afterwards, possibly cause sound equipment to damage.
[summary of the invention]
The objective of the invention is to overcome in the prior art electronics playback equipment and produce a kind of start moment mute circuit that the deficiency of moment noise provides because momentary pulse is arranged in start moment.
The present invention realizes through following technical scheme: a kind of start moment mute circuit; It comprises audio output circuit, player governor circuit and first holding wire; One end of said first holding wire is connected in the signal output port of said audio output circuit, and the other end of said first holding wire is connected in the signal input port of said player governor circuit; Its improvements are, also comprise muting control circuit and secondary signal line; One end of said secondary signal line is connected in said muting control circuit, and the other end of said secondary signal line is connected in said first holding wire.
Beneficial effect of the present invention is: the circuit of this structure; In the moment of start; Muting control circuit leaches the audio output circuit pulse that moment produces of starting shooting; Thereby make start moment sound equipment can not produce the noise of moment, both improved play quality, also protected playback equipment can not protected playback equipment simultaneously by noise destruction.
[description of drawings]
Fig. 1 is a circuit frame principle figure of the present invention.
Reference numeral: 1, audio output circuit; 2, player governor circuit; 3, muting control circuit.
[embodiment]
Below in conjunction with accompanying drawing and embodiment the present invention is done and to further describe:
With reference to shown in Figure 1; This start moment mute circuit; It comprises audio output circuit 1, player governor circuit 2 and first holding wire; One end of said first holding wire is connected in the signal output port of said audio output circuit 1, and the other end of said first holding wire is connected in the signal input port of said player governor circuit 2; This start moment mute circuit also comprises muting control circuit 3 and secondary signal line; One end of said secondary signal line is connected in said muting control circuit 3, and the other end of said secondary signal line is connected in said first holding wire.
The circuit of this structure; In the moment of start; Muting control circuit 3 leaches the pulse of audio output circuit 1 start moment generation; Thereby make start moment sound equipment can not produce the noise of moment, both improved play quality, also protected playback equipment can not protected playback equipment simultaneously by noise destruction.
According to the announcement and the instruction of above-mentioned specification, those skilled in the art in the invention can also carry out suitable change and modification to above-mentioned execution mode.Therefore, the embodiment that discloses and describe above the present invention is not limited to also should fall in the protection range of claim of the present invention modifications more of the present invention and change.In addition, although used some specific terms in this specification, these terms are explanation for ease just, the present invention is not constituted any restriction.
Claims (1)
- One kind the start moment mute circuit; It comprises audio output circuit, player governor circuit and first holding wire; One end of said first holding wire is connected in the signal output port of said audio output circuit, and the other end of said first holding wire is connected in the signal input port of said player governor circuit; It is characterized in that: also comprise muting control circuit and secondary signal line; One end of said secondary signal line is connected in said muting control circuit, and the other end of said secondary signal line is connected in said first holding wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210001514XA CN102547528A (en) | 2012-01-04 | 2012-01-04 | Booting moment mute circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210001514XA CN102547528A (en) | 2012-01-04 | 2012-01-04 | Booting moment mute circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102547528A true CN102547528A (en) | 2012-07-04 |
Family
ID=46353261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210001514XA Pending CN102547528A (en) | 2012-01-04 | 2012-01-04 | Booting moment mute circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102547528A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111601217A (en) * | 2020-06-12 | 2020-08-28 | 歌尔科技有限公司 | Noise processing method for audio player, audio player and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1767375A (en) * | 2004-10-25 | 2006-05-03 | 南京Lg同创彩色显示系统有限责任公司 | Device for eliminating digital audio apparatus noise |
| TW200640275A (en) * | 2005-05-02 | 2006-11-16 | Asustek Comp Inc | Anti-pop circuit |
| CN101350593A (en) * | 2008-08-26 | 2009-01-21 | 四川登巅微电子有限公司 | Circuit for suppressing POP noise |
| CN102065352A (en) * | 2010-11-08 | 2011-05-18 | 中兴通讯股份有限公司 | Device and method for eliminating POP noise of CAPLESS audio power amplifier |
| CN202475744U (en) * | 2012-01-04 | 2012-10-03 | 深圳市宽宏科技有限公司 | Power on instant mute circuit |
-
2012
- 2012-01-04 CN CN201210001514XA patent/CN102547528A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1767375A (en) * | 2004-10-25 | 2006-05-03 | 南京Lg同创彩色显示系统有限责任公司 | Device for eliminating digital audio apparatus noise |
| TW200640275A (en) * | 2005-05-02 | 2006-11-16 | Asustek Comp Inc | Anti-pop circuit |
| CN101350593A (en) * | 2008-08-26 | 2009-01-21 | 四川登巅微电子有限公司 | Circuit for suppressing POP noise |
| CN102065352A (en) * | 2010-11-08 | 2011-05-18 | 中兴通讯股份有限公司 | Device and method for eliminating POP noise of CAPLESS audio power amplifier |
| CN202475744U (en) * | 2012-01-04 | 2012-10-03 | 深圳市宽宏科技有限公司 | Power on instant mute circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111601217A (en) * | 2020-06-12 | 2020-08-28 | 歌尔科技有限公司 | Noise processing method for audio player, audio player and storage medium |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120704 |