CN204334926U - The high definition audio treatment system that a kind of frequency filtering is adjustable - Google Patents
The high definition audio treatment system that a kind of frequency filtering is adjustable Download PDFInfo
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- CN204334926U CN204334926U CN201420694380.9U CN201420694380U CN204334926U CN 204334926 U CN204334926 U CN 204334926U CN 201420694380 U CN201420694380 U CN 201420694380U CN 204334926 U CN204334926 U CN 204334926U
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Abstract
The utility model discloses the high definition audio treatment system that a kind of frequency filtering is adjustable, primarily of audio collection module, the frequency selection circuit be connected with audio collection module, the micro-processor interface circuit be connected with frequency selection circuit, and the amplifying circuit to be connected with micro-processor interface circuit forms, and it is characterized in that: be also provided with tunable filter circuit at the output of micro-processor interface circuit; Described tunable filter circuit by operational amplifier T1, operational amplifier T2, triode VT3, the compositions such as the electric capacity C8 that positive pole is connected with micro-processor interface circuit, negative pole is connected with the output of operational amplifier T1 after potentiometer R12 through resistance R11; The utility model is provided with tunable filter circuit, and it can filter out unwanted ripple frequently, avoids audio frequency processing system to be subject to not needing ripple interference frequently, thus improves film play quality.Meanwhile, as long as adjustment potentiometer R12 and potentiometer R14, then can adjust the frequency filtering of audio frequency processing system, thus better can filter out noise.
Description
Technical field
The utility model relates to a kind of electronic system, specifically refers to the high definition audio treatment system that a kind of frequency filtering is adjustable.
Background technology
Along with people pursue more and more higher to quality of life, present home theater enters into every household substantially, brings very large enjoyment to people's life.But, often there will be noise when people watch film, thus have influence on film play quality.
Utility model content
The purpose of this utility model is to overcome the bad defect of current audio treatment system filter effect, provides the high definition audio treatment system that a kind of frequency filtering is adjustable.
The following technical scheme of the purpose of this utility model realizes: the high definition audio treatment system that a kind of frequency filtering is adjustable, primarily of audio collection module, the frequency selection circuit be connected with audio collection module, the micro-processor interface circuit be connected with frequency selection circuit, and the amplifying circuit to be connected with micro-processor interface circuit forms, and is also provided with tunable filter circuit at the output of micro-processor interface circuit, described tunable filter circuit is by operational amplifier T1, operational amplifier T2, triode VT3, positive pole is connected with micro-processor interface circuit, the electric capacity C8 that negative pole is connected with the output of operational amplifier T1 after potentiometer R12 through resistance R11, positive pole is connected with the normal phase input end of operational amplifier T1, the electric capacity C10 that negative pole is connected with the collector electrode of triode VT3, negative pole is connected with the output of operational amplifier T1, the electric capacity C9 that positive pole is connected with the positive pole of electric capacity C8 after resistance R10, positive pole is connected with the emitter of triode VT3, the electric capacity C11 that negative pole enters to be connected with the anti-phase defeated end of amplifier T2, one end is connected with the positive pole of electric capacity C11, the resistance R13 that the other end is then connected with the inverting input of operational amplifier T2 after potentiometer R14 forms, the inverting input of institute operational amplifier T1 is connected with the normal phase input end of operational amplifier T2, and the base stage of triode VT3 is connected with the negative pole of electric capacity C8, its emitter is also connected with the positive pole of electric capacity C9.
Further, described frequency selection circuit is by electric capacity C1, and electric capacity C2, electric capacity C3, electric capacity C4, resistance R1, resistance R2 form; The positive pole of electric capacity C1 is connected with its negative pole in turn after resistance R1, electric capacity C3, electric capacity C4, resistance R2, electric capacity C2, electric capacity C1 is connected with an output of audio collection module with the tie point of resistance R1, electric capacity C2 is connected with another output of audio collection module with the tie point of resistance R2, and tie point and the resistance R2 of resistance R1 and electric capacity C3 are all connected with micro-processor interface circuit with the tie point of electric capacity C4.
Described micro-processor interface circuit is by triode VT1, triode VT2, the resistance R3 that one end is connected with the collector electrode of triode VT2, the other end is connected with the base stage of triode VT1, the electric capacity C5 that positive pole is connected with the base stage of triode VT1, negative pole is connected with the emitter of triode VT1, and the resistance R4 that one end is connected with the base stage of triode VT2, the other end is connected with the collector electrode of triode VT1 forms; The collector electrode of described triode VT2 is connected with the tie point of electric capacity C3 with resistance R1, its emitter is connected with the positive pole of electric capacity C8, the emitter of triode VT1 is connected with amplifying circuit, and the negative pole of electric capacity C5 is connected with the tie point of resistance R2 with electric capacity C4.
Described amplifying circuit is by operational amplifier T3, positive pole is connected with the normal phase input end of operational amplifier T3 after resistance R7, the negative pole then electric capacity C7 of ground connection after resistance R5, the electric capacity C6 that positive pole is connected with the emitter of triode VT1, negative pole is connected with the negative pole of electric capacity C7, the resistance R6 that one end is connected with the positive pole of electric capacity C7, the other end is connected with the inverting input of operational amplifier T3 after resistance R8, and the resistance R9 be serially connected between the inverting input of operational amplifier T3 and output forms; The tie point ground connection of resistance R6 and resistance R8.
The utility model compared with prior art, has the following advantages and beneficial effect:
(1) the utility model is provided with tunable filter circuit, and it can filter out unwanted ripple frequently, avoids audio frequency processing system to be subject to not needing ripple interference frequently, thus improves film play quality.
(2) as long as the utility model adjustment potentiometer R12 and potentiometer R14, then can adjust the frequency filtering of audio frequency processing system, thus better can filter out noise.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Embodiment
Below in conjunction with specific embodiment, the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.
Embodiment
As shown in Figure 1, the high definition audio treatment system that frequency filtering of the present utility model is adjustable, primarily of audio collection module, the frequency selection circuit be connected with audio collection module, the micro-processor interface circuit be connected with frequency selection circuit, and the amplifying circuit be connected with micro-processor interface circuit forms.In order to object of the present invention can be realized, be also provided with tunable filter circuit at the output of micro-processor interface circuit.
This tunable filter circuit can filter out unwanted ripple frequently, avoids audio frequency processing system to be subject to not needing ripple interference frequently, thus improves film play quality.It is by operational amplifier T1, operational amplifier T2, triode VT3, positive pole is connected with micro-processor interface circuit, the electric capacity C8 that negative pole is connected with the output of operational amplifier T1 after potentiometer R12 through resistance R11, positive pole is connected with the normal phase input end of operational amplifier T1, the electric capacity C10 that negative pole is connected with the collector electrode of triode VT3, negative pole is connected with the output of operational amplifier T1, the electric capacity C9 that positive pole is connected with the positive pole of electric capacity C8 after resistance R10, positive pole is connected with the emitter of triode VT3, the electric capacity C11 that negative pole enters to be connected with the anti-phase defeated end of amplifier T2, one end is connected with the positive pole of electric capacity C11, the resistance R13 that the other end is then connected with the inverting input of operational amplifier T2 after potentiometer R14 forms, the inverting input of institute operational amplifier T1 is connected with the normal phase input end of operational amplifier T2, and the base stage of triode VT3 is connected with the negative pole of electric capacity C8, its emitter is also connected with the positive pole of electric capacity C9.As long as people adjust potentiometer R12 and potentiometer R14, then can adjust the frequency filtering of audio frequency processing system, thus better can filter out noise.
Frequency selection circuit can screen signal, picks out useful signal.This frequency selection circuit is by electric capacity C1, and electric capacity C2, electric capacity C3, electric capacity C4, resistance R1, resistance R2 form; The positive pole of electric capacity C1 is connected with its negative pole in turn after resistance R1, electric capacity C3, electric capacity C4, resistance R2, electric capacity C2, electric capacity C1 is connected with an output of audio collection module with the tie point of resistance R1, electric capacity C2 is connected with another output of audio collection module with the tie point of resistance R2, and tie point and the resistance R2 of resistance R1 and electric capacity C3 are all connected with micro-processor interface circuit with the tie point of electric capacity C4.
Described micro-processor interface circuit is by triode VT1, triode VT2, the resistance R3 that one end is connected with the collector electrode of triode VT2, the other end is connected with the base stage of triode VT1, the electric capacity C5 that positive pole is connected with the base stage of triode VT1, negative pole is connected with the emitter of triode VT1, and the resistance R4 that one end is connected with the base stage of triode VT2, the other end is connected with the collector electrode of triode VT1 forms; The collector electrode of described triode VT2 is connected with the tie point of electric capacity C3 with resistance R1, its emitter is connected with the positive pole of electric capacity C8, the emitter of triode VT1 is connected with amplifying circuit, and the negative pole of electric capacity C5 is connected with the tie point of resistance R2 with electric capacity C4.
Finally, signal exports after amplifying circuit amplifies.This amplifying circuit is by operational amplifier T3, positive pole is connected with the normal phase input end of operational amplifier T3 after resistance R7, the negative pole then electric capacity C7 of ground connection after resistance R5, the electric capacity C6 that positive pole is connected with the emitter of triode VT1, negative pole is connected with the negative pole of electric capacity C7, the resistance R6 that one end is connected with the positive pole of electric capacity C7, the other end is connected with the inverting input of operational amplifier T3 after resistance R8, and the resistance R9 be serially connected between the inverting input of operational amplifier T3 and output forms; The tie point ground connection of resistance R6 and resistance R8.
As mentioned above, just well the utility model can be realized.
Claims (4)
1. the high definition audio treatment system that a frequency filtering is adjustable, primarily of audio collection module, the frequency selection circuit be connected with audio collection module, the micro-processor interface circuit be connected with frequency selection circuit, and the amplifying circuit to be connected with micro-processor interface circuit forms, and it is characterized in that: be also provided with tunable filter circuit at the output of micro-processor interface circuit, described tunable filter circuit is by operational amplifier T1, operational amplifier T2, triode VT3, positive pole is connected with micro-processor interface circuit, the electric capacity C8 that negative pole is connected with the output of operational amplifier T1 after potentiometer R12 through resistance R11, positive pole is connected with the normal phase input end of operational amplifier T1, the electric capacity C10 that negative pole is connected with the collector electrode of triode VT3, negative pole is connected with the output of operational amplifier T1, the electric capacity C9 that positive pole is connected with the positive pole of electric capacity C8 after resistance R10, positive pole is connected with the emitter of triode VT3, the electric capacity C11 that negative pole enters to be connected with the anti-phase defeated end of amplifier T2, one end is connected with the positive pole of electric capacity C11, the resistance R13 that the other end is then connected with the inverting input of operational amplifier T2 after potentiometer R14 forms, the inverting input of institute operational amplifier T1 is connected with the normal phase input end of operational amplifier T2, and the base stage of triode VT3 is connected with the negative pole of electric capacity C8, its emitter is also connected with the positive pole of electric capacity C9.
2. the high definition audio treatment system that a kind of frequency filtering according to claim 1 is adjustable, is characterized in that: described frequency selection circuit is by electric capacity C1, and electric capacity C2, electric capacity C3, electric capacity C4, resistance R1, resistance R2 form; The positive pole of electric capacity C1 is connected with its negative pole in turn after resistance R1, electric capacity C3, electric capacity C4, resistance R2, electric capacity C2, electric capacity C1 is connected with an output of audio collection module with the tie point of resistance R1, electric capacity C2 is connected with another output of audio collection module with the tie point of resistance R2, and tie point and the resistance R2 of resistance R1 and electric capacity C3 are all connected with micro-processor interface circuit with the tie point of electric capacity C4.
3. the high definition audio treatment system that a kind of frequency filtering according to claim 2 is adjustable, it is characterized in that: described micro-processor interface circuit is by triode VT1, triode VT2, the resistance R3 that one end is connected with the collector electrode of triode VT2, the other end is connected with the base stage of triode VT1, the electric capacity C5 that positive pole is connected with the base stage of triode VT1, negative pole is connected with the emitter of triode VT1, and the resistance R4 that one end is connected with the base stage of triode VT2, the other end is connected with the collector electrode of triode VT1 forms; The collector electrode of described triode VT2 is connected with the tie point of electric capacity C3 with resistance R1, its emitter is connected with the positive pole of electric capacity C8, the emitter of triode VT1 is connected with amplifying circuit, and the negative pole of electric capacity C5 is connected with the tie point of resistance R2 with electric capacity C4.
4. the high definition audio treatment system that a kind of frequency filtering according to claim 3 is adjustable, it is characterized in that: described amplifying circuit is by operational amplifier T3, positive pole is connected with the normal phase input end of operational amplifier T3 after resistance R7, negative pole is the electric capacity C7 of ground connection after resistance R5 then, positive pole is connected with the emitter of triode VT1, the electric capacity C6 that negative pole is connected with the negative pole of electric capacity C7, one end is connected with the positive pole of electric capacity C7, the resistance R6 that the other end is connected with the inverting input of operational amplifier T3 after resistance R8, and the resistance R9 be serially connected between the inverting input of operational amplifier T3 and output forms, the tie point ground connection of resistance R6 and resistance R8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420694380.9U CN204334926U (en) | 2014-11-18 | 2014-11-18 | The high definition audio treatment system that a kind of frequency filtering is adjustable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420694380.9U CN204334926U (en) | 2014-11-18 | 2014-11-18 | The high definition audio treatment system that a kind of frequency filtering is adjustable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204334926U true CN204334926U (en) | 2015-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420694380.9U Active CN204334926U (en) | 2014-11-18 | 2014-11-18 | The high definition audio treatment system that a kind of frequency filtering is adjustable |
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| Country | Link |
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| CN (1) | CN204334926U (en) |
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2014
- 2014-11-18 CN CN201420694380.9U patent/CN204334926U/en active Active
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151029 Address after: 518000 Guangdong city of Shenzhen province Nanshan District Nantou street Nantou road two pass forward hot electrons strategic emerging industrial park building 2 floor 25 Patentee after: The Shenzhen times Acoustic Technology Co. Ltd. Address before: 610000, 8 South Street, Chengdu hi tech Zone, Sichuan Patentee before: Chengdu Cuopu Technology Co., Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210824 Address after: 518000 No.3 Factory, Qiaotou Fuqiao Industrial Zone, Fuyong Town, Bao'an District, Shenzhen City, Guangdong Province Patentee after: SHENZHEN EVERWIN PRECISION TECHNOLOGY Co.,Ltd. Address before: 518000 floor 2, building 25, Zhiheng strategic emerging industrial park, Nantou Guankou Second Road, Nantou street, Nanshan District, Shenzhen, Guangdong Patentee before: SHENZHEN BELLSING ACOUSTIC TECHNOLOGY Co.,Ltd. |