CN104469611A - Audio processing system for widening range - Google Patents
Audio processing system for widening range Download PDFInfo
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- CN104469611A CN104469611A CN201410665145.3A CN201410665145A CN104469611A CN 104469611 A CN104469611 A CN 104469611A CN 201410665145 A CN201410665145 A CN 201410665145A CN 104469611 A CN104469611 A CN 104469611A
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Abstract
The invention discloses an audio processing system for widening a range. The system is mainly composed of an audio collection module, a frequency selecting circuit, a micro-processing circuit, a current source circuit and an amplifying circuit, wherein the micro-processing circuit and the current source circuit are both connected with the frequency selecting circuit, and the amplifying circuit is connected with the micro-processing circuit and the current source circuit at the same time. The system is characterized in that a low-frequency intensifier circuit is arranged between the audio collection module and the frequency selecting circuit and composed of a resistor R1, a potentiometer R2, a resistor R3, a resistor R4, a resistor R5, a potentiometer R6, a capacitor C1, a capacitor C2, a capacitor C3 and a capacitor C4. The low-frequency intensifier circuit is arranged, powerful low sound can be acquired, the range can be widened within the wide scope, and the low sound effect of a home theater is better in the film showing process.
Description
Technical field
The present invention relates to a kind of electronic system, specifically refer to a kind of audio frequency processing system of broadening range.
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 panesthesia sound effect is bad when people watch film, especially poorer in the effect of low frequency, affect the viewing effect of people.
Summary of the invention
The object of the invention is to the defect overcoming current audio treatment system process low frequency signal poor effect, a kind of audio frequency processing system that can strengthen the broadening range of low frequency characteristic is provided.
The following technical scheme of object of the present invention realizes: a kind of audio frequency processing system of broadening range, primarily of audio collection module, frequency selection circuit, the micro-processor interface circuit be all connected with frequency selection circuit and current source circuit, form with the amplifying circuit that micro-processor interface circuit is connected with current source circuit simultaneously, between audio collection module and frequency selection circuit, be also provided with low frequency intensifier circuit; Described low frequency intensifier circuit is by resistance R1, and potentiometer R2, resistance R3, resistance R4, resistance R5, potentiometer R6, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4 form; The positive pole of electric capacity C4 is connected with audio collection module and frequency selection circuit after resistance R5 simultaneously, minus earth, one end of potentiometer R6 is connected with the positive pole of electric capacity C4, other end ground connection, the positive pole of electric capacity C1 is connected with audio collection module and frequency selection circuit after resistance R1 simultaneously, minus earth, one end of potentiometer R2 is connected with the positive pole of electric capacity C1, other end ground connection, positive pole ground connection, negative pole after resistance R3 of electric capacity C2 are connected with frequency selection circuit, and positive pole ground connection, negative pole after resistance R4 of electric capacity C3 are connected with frequency selection circuit.
Further, described frequency selection circuit is by triode VT1, triode VT2, positive pole is connected with the base stage of triode VT1 after resistance R7, negative pole then through the electric capacity C5 that electric capacity C6 is connected with the base stage of triode VT1 after electric capacity C7, and the resistance R8 that one end is connected with the base stage of triode VT2, the other end is then connected with the collector electrode of triode VT1 forms; The collector electrode of described triode VT2 is connected with the positive pole of electric capacity C5, its emitter is then connected with current source circuit, the emitter of triode VT1 is then connected with the tie point of electric capacity C6 and electric capacity C7 and micro-processor interface circuit simultaneously, electric capacity C6 is also connected with resistance R5 with the tie point of electric capacity C7, and the positive pole of electric capacity C5 is connected with resistance R1.
Described current source circuit is by triode VT3, triode VT4, the voltage stabilizing didoe D3 that N pole is connected with the base stage of triode VT3, P pole is connected with the emitter of triode VT3 after resistance R10, one end is connected with the base stage of triode VT3, the resistance R9 of other end ground connection, and the resistance R11 that one end is connected with triode VT4 emitter, the other end is connected with amplifying circuit with micro-processor interface circuit respectively forms; The collector electrode of described triode VT3 is connected with micro-processor interface circuit, the grounded collector of triode VT4, and the P pole of voltage stabilizing didoe D3 is connected with external power source with the emitter of triode VT2 simultaneously.
Described micro-processor interface circuit comprises electric capacity C8, electric capacity C9, resistance R12, and field effect transistor Q1; The positive pole of electric capacity C8 is connected with the emitter of triode VT1, its negative pole is connected with the grid of field effect transistor Q1, one end of resistance R12 is connected with the grid of field effect transistor Q1, other end ground connection, the negative pole of electric capacity C9 is connected with the drain electrode of field effect transistor Q1, positive pole is then connected with amplifying circuit with resistance R11 simultaneously, and the source electrode of described field effect transistor is connected with the collector electrode of triode VT3.
Described amplifying circuit comprises amplification chip P, resistance R13, resistance R14, resistance R15, resistance R16; The positive input of amplification chip P is connected with its reverse input end, between the reverse input end that resistance R16 is then serially connected in amplification chip P and output through resistance R14 after resistance R13 and resistance R15; Resistance R13 is connected with the positive pole of electric capacity C9 with the tie point of resistance R14.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) the present invention is provided with low frequency intensifier circuit, and it can obtain powerful bass and broadening range in wider scope, makes home theater bass effect when film playback better.
(2) structure of the present invention is simple, and can energy efficient.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
As shown in Figure 1, the audio frequency processing system of broadening range of the present invention, primarily of audio collection module, frequency selection circuit, the micro-processor interface circuit be all connected with frequency selection circuit and current source circuit, form with the amplifying circuit that micro-processor interface circuit is connected with current source circuit simultaneously.In order to make the bass effect after process better, between audio collection module and frequency selection circuit, be also provided with low frequency intensifier circuit.
Wherein, low frequency intensifier circuit is by resistance R1, and potentiometer R2, resistance R3, resistance R4, resistance R5, potentiometer R6, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4 form.During connection, the positive pole of electric capacity C4 is connected with audio collection module and frequency selection circuit after resistance R5 simultaneously, minus earth, one end of potentiometer R6 is connected with the positive pole of electric capacity C4, other end ground connection, the positive pole of electric capacity C1 is connected with audio collection module and frequency selection circuit after resistance R1 simultaneously, minus earth, one end of potentiometer R2 is connected with the positive pole of electric capacity C1, other end ground connection, positive pole ground connection, negative pole after resistance R3 of electric capacity C2 are connected with frequency selection circuit, and positive pole ground connection, negative pole after resistance R4 of electric capacity C3 are connected with frequency selection circuit.By the effect of low frequency intensifier circuit, the audio signal after process can obtain powerful bass and broadening range in wider scope, makes home theater bass effect when film playback better.
Meanwhile, in order to screen audio signal, in system, frequency selection circuit is provided with.It is by triode VT1, triode VT2, positive pole is connected with the base stage of triode VT1 after resistance R7, negative pole then through the electric capacity C5 that electric capacity C6 is connected with the base stage of triode VT1 after electric capacity C7, and the resistance R8 that one end is connected with the base stage of triode VT2, the other end is then connected with the collector electrode of triode VT1 forms.The collector electrode of described triode VT2 is connected with the positive pole of electric capacity C5, its emitter is then connected with current source circuit, the emitter of triode VT1 is then connected with the tie point of electric capacity C6 and electric capacity C7 and micro-processor interface circuit simultaneously, electric capacity C6 is also connected with resistance R5 with the tie point of electric capacity C7, and the positive pole of electric capacity C5 is connected with resistance R1.
In order to make sound more clear, Operation system setting has current source circuit.It is by triode VT3, triode VT4, the voltage stabilizing didoe D3 that N pole is connected with the base stage of triode VT3, P pole is connected with the emitter of triode VT3 after resistance R10, one end is connected with the base stage of triode VT3, the resistance R9 of other end ground connection, and the resistance R11 that one end is connected with triode VT4 emitter, the other end is connected with amplifying circuit with micro-processor interface circuit respectively forms; The collector electrode of described triode VT3 is connected with micro-processor interface circuit, the grounded collector of triode VT4, and the P pole of voltage stabilizing didoe D3 is connected with external power source with the emitter of triode VT2 simultaneously.
Described micro-processor interface circuit comprises electric capacity C8, electric capacity C9, resistance R12, and field effect transistor Q1; The positive pole of electric capacity C8 is connected with the emitter of triode VT1, its negative pole is connected with the grid of field effect transistor Q1, one end of resistance R12 is connected with the grid of field effect transistor Q1, other end ground connection, the negative pole of electric capacity C9 is connected with the drain electrode of field effect transistor Q1, positive pole is then connected with amplifying circuit with resistance R11 simultaneously, and the source electrode of described field effect transistor is connected with the collector electrode of triode VT3.
Amplifying circuit can amplify audio signal, and it comprises amplification chip P, resistance R13, resistance R14, resistance R15, resistance R16; The positive input of amplification chip P is connected with its reverse input end, between the reverse input end that resistance R16 is then serially connected in amplification chip P and output through resistance R14 after resistance R13 and resistance R15; Resistance R13 is connected with the positive pole of electric capacity C9 with the tie point of resistance R14.
As mentioned above, just well the present invention can be realized.
Claims (5)
1. the audio frequency processing system of a broadening range, primarily of audio collection module, frequency selection circuit, the micro-processor interface circuit be all connected with frequency selection circuit and current source circuit, form with the amplifying circuit that micro-processor interface circuit is connected with current source circuit simultaneously, it is characterized in that: between audio collection module and frequency selection circuit, be also provided with low frequency intensifier circuit; Described low frequency intensifier circuit is by resistance R1, and potentiometer R2, resistance R3, resistance R4, resistance R5, potentiometer R6, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4 form; The positive pole of electric capacity C4 is connected with audio collection module and frequency selection circuit after resistance R5 simultaneously, minus earth, one end of potentiometer R6 is connected with the positive pole of electric capacity C4, other end ground connection, the positive pole of electric capacity C1 is connected with audio collection module and frequency selection circuit after resistance R1 simultaneously, minus earth, one end of potentiometer R2 is connected with the positive pole of electric capacity C1, other end ground connection, positive pole ground connection, negative pole after resistance R3 of electric capacity C2 are connected with frequency selection circuit, and positive pole ground connection, negative pole after resistance R4 of electric capacity C3 are connected with frequency selection circuit.
2. the audio frequency processing system of a kind of broadening range according to claim 1, it is characterized in that: described frequency selection circuit is by triode VT1, triode VT2, positive pole is connected with the base stage of triode VT1 after resistance R7, negative pole then through the electric capacity C5 that electric capacity C6 is connected with the base stage of triode VT1 after electric capacity C7, and the resistance R8 that one end is connected with the base stage of triode VT2, the other end is then connected with the collector electrode of triode VT1 forms; The collector electrode of described triode VT2 is connected with the positive pole of electric capacity C5, its emitter is then connected with current source circuit, the emitter of triode VT1 is then connected with the tie point of electric capacity C6 and electric capacity C7 and micro-processor interface circuit simultaneously, electric capacity C6 is also connected with resistance R5 with the tie point of electric capacity C7, and the positive pole of electric capacity C5 is connected with resistance R1.
3. the audio frequency processing system of a kind of broadening range according to claim 2, it is characterized in that: described current source circuit is by triode VT3, triode VT4, the voltage stabilizing didoe D3 that N pole is connected with the base stage of triode VT3, P pole is connected with the emitter of triode VT3 after resistance R10, one end is connected with the base stage of triode VT3, the resistance R9 of other end ground connection, and the resistance R11 that one end is connected with triode VT4 emitter, the other end is connected with amplifying circuit with micro-processor interface circuit respectively forms; The collector electrode of described triode VT3 is connected with micro-processor interface circuit, the grounded collector of triode VT4, and the P pole of voltage stabilizing didoe D3 is connected with external power source with the emitter of triode VT2 simultaneously.
4. the audio frequency processing system of a kind of broadening range according to claim 3, is characterized in that: described micro-processor interface circuit comprises electric capacity C8, electric capacity C9, resistance R12, and field effect transistor Q1; The positive pole of electric capacity C8 is connected with the emitter of triode VT1, its negative pole is connected with the grid of field effect transistor Q1, one end of resistance R12 is connected with the grid of field effect transistor Q1, other end ground connection, the negative pole of electric capacity C9 is connected with the drain electrode of field effect transistor Q1, positive pole is then connected with amplifying circuit with resistance R11 simultaneously, and the source electrode of described field effect transistor is connected with the collector electrode of triode VT3.
5. the audio frequency processing system of a kind of broadening range according to claim 4, is characterized in that: described amplifying circuit comprises amplification chip P, resistance R13, resistance R14, resistance R15, resistance R16; The positive input of amplification chip P is connected with its reverse input end, between the reverse input end that resistance R16 is then serially connected in amplification chip P and output through resistance R14 after resistance R13 and resistance R15; Resistance R13 is connected with the positive pole of electric capacity C9 with the tie point of resistance R14.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410665145.3A CN104469611A (en) | 2014-11-19 | 2014-11-19 | Audio processing system for widening range |
| CN201510282709.XA CN104936095A (en) | 2014-11-19 | 2015-05-28 | Audio processing system based on triode common-emitter symmetric amplification circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410665145.3A CN104469611A (en) | 2014-11-19 | 2014-11-19 | Audio processing system for widening range |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104469611A true CN104469611A (en) | 2015-03-25 |
Family
ID=52914845
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410665145.3A Pending CN104469611A (en) | 2014-11-19 | 2014-11-19 | Audio processing system for widening range |
| CN201510282709.XA Withdrawn CN104936095A (en) | 2014-11-19 | 2015-05-28 | Audio processing system based on triode common-emitter symmetric amplification circuit |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510282709.XA Withdrawn CN104936095A (en) | 2014-11-19 | 2015-05-28 | Audio processing system based on triode common-emitter symmetric amplification circuit |
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| Country | Link |
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| CN (2) | CN104469611A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104936095A (en) * | 2014-11-19 | 2015-09-23 | 成都冠深科技有限公司 | Audio processing system based on triode common-emitter symmetric amplification circuit |
| CN107396242A (en) * | 2017-08-08 | 2017-11-24 | 广东长虹电子有限公司 | A kind of audio gain circuit |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2214715Y (en) * | 1994-11-12 | 1995-12-06 | 梁强 | Electron tube positive grid voltage audiofrequency power amplifier |
| CN2257105Y (en) * | 1995-12-18 | 1997-06-25 | 江智新 | Voice frequency power amplifier without capacitor |
| CN2817213Y (en) * | 2005-08-12 | 2006-09-13 | 陈剑荣 | Audio frequency power amplifier |
| CN104469611A (en) * | 2014-11-19 | 2015-03-25 | 成都创图科技有限公司 | Audio processing system for widening range |
-
2014
- 2014-11-19 CN CN201410665145.3A patent/CN104469611A/en active Pending
-
2015
- 2015-05-28 CN CN201510282709.XA patent/CN104936095A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104936095A (en) * | 2014-11-19 | 2015-09-23 | 成都冠深科技有限公司 | Audio processing system based on triode common-emitter symmetric amplification circuit |
| CN107396242A (en) * | 2017-08-08 | 2017-11-24 | 广东长虹电子有限公司 | A kind of audio gain circuit |
| CN107396242B (en) * | 2017-08-08 | 2024-02-06 | 广东长虹电子有限公司 | Audio gain circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104936095A (en) | 2015-09-23 |
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Application publication date: 20150325 |