CN104639272B - Sound console - Google Patents
Sound console Download PDFInfo
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- CN104639272B CN104639272B CN201310561605.3A CN201310561605A CN104639272B CN 104639272 B CN104639272 B CN 104639272B CN 201310561605 A CN201310561605 A CN 201310561605A CN 104639272 B CN104639272 B CN 104639272B
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- circuit
- transport
- placing device
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- adjustment
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Abstract
The present invention proposes a kind of sound console, including tuning control circuit and equalizing circuit；Further include power amplifier；The equalizing circuit includes L channel equalizing circuit and right channel equalizing circuit；The input terminal of L channel equalizing circuit, the input terminal of right channel equalizing circuit are connect with tuning control circuit；The output terminal of L channel equalizing circuit, the output terminal of right channel equalizing circuit are connect with power amplifier.The sound console of the present invention carries power amplifier, can be used directly, meets the actual needs without external power amplifier；Balanced modulating bandwidth is promoted, the effect of bass is more preferable in attenuation, optimization tuning effect；And with MP3 playing functions, USB flash disk, SD card etc. can be played.
Description
Technical field
The present invention relates to sound consoles.
Background technology
Traditional sound console must connect rear class power amplifier and could use, it is impossible to satisfy the use demand.The traditional sound console having
With equalizing circuit, but balanced tunable band is narrow, and tuning effect is poor.And the slotting USB flash disk of heat can not be met or SD card is played for carrier
The functional requirement of MP3.
Invention content
Insufficient for the above-mentioned prior art, the technical problem to be solved in the invention is to provide a kind of different from existing skill
The sound console of art, can be used alone sound console, improve practical performance.
In order to solve the above technical problems, the technical solution adopted by the present invention is, sound console, including tuning control circuit and
Weigh circuit；Further include power amplifier；The equalizing circuit includes L channel equalizing circuit and right channel equalizing circuit；L channel is equal
The input terminal of weighing apparatus circuit, the input terminal of right channel equalizing circuit are connect with tuning control circuit；L channel equalizing circuit it is defeated
Outlet, right channel equalizing circuit output terminal connect with power amplifier, such structure makes sound console carry power amplifier, can be directly
It uses, it is easy to use without external power amplifier again, meet actual use needs.
Wherein, the L channel equalizing circuit, right channel equalizing circuit are each provided with input circuit, amplifier grade circuit and tune
Whole grade circuit；Wherein, the input terminal of L channel equalizing circuit, right channel equalizing circuit input terminal be respectively respective input circuit
First end, the second end of input circuit is connected to the input terminal of corresponding amplifier grade circuit；The amplifier grade circuit is at least set
There is level-one transport and placing device, adjustment grade circuit is connected to the input terminal of corresponding amplifier grade circuit afterbody transport and placing device, and L channel is equal
Output terminal, the right channel equalizing circuit output terminal of weighing apparatus circuit are respectively the output terminal of corresponding amplifier grade circuit
Wherein, preferred technical solution further includes, and the input circuit is noise reduction input circuit；The noise reduction input circuit
Including noise reduction transport and placing device, noise reduction potentiometer, the first diode, the second diode, the first triode and the second triode；Noise reduction is transported
The positive input terminal ground connection of device is put, the output terminal of noise reduction transport and placing device is connected to the negative of noise reduction transport and placing device by the 4th feedback resistance
Input terminal；The negative input end of noise reduction transport and placing device is also connected to the cathode of an input electrolytic capacitor, the sun of the input electrolytic capacitor
Pole is connected to the first end of a third input resistance, and the second end of the third input resistance is the first of noise reduction input circuit
End；The output terminal of noise reduction transport and placing device is also connected to the anode of the first diode, and the cathode of the first diode is connected to the one or three pole
The base stage of pipe；Cathode of the cathode of first diode also with the second diode is connect, the plus earth of the second diode, and the two or two
The both ends of pole pipe are also parallel with third ground resistance and third ground capacity；The minus earth of first triode, the first triode
Anode connect with the base stage of the second triode；The base stage of second triode is also connected to the cathode of first electrolytic capacitor,
The anode of first electrolytic capacitor is connected to the cathode of the second triode, and the anode of the second triode is connected to the second electrolytic capacitor
Cathode, the anode of the second electrolytic capacitor is connected to the contact of noise reduction potentiometer；The first end of noise reduction potentiometer is connected to second
The cathode of triode and ground connection, the second end of noise reduction potentiometer are connected to input electrolytic capacitor by the 4th input resistance
Anode；The anode of second electrolytic capacitor is the second end of noise reduction input circuit.Such structure can effective noise reduction, preferably optimize
Tuning effect.
Still further, the adjustment grade circuit includes adjustment transport and placing device and adjustment potentiometer；Adjust the just defeated of transport and placing device
Enter end by first ground resistance earth, the negative input end for adjusting transport and placing device is connect with adjusting the output terminal of transport and placing device；It adjusts
The output terminal of whole transport and placing device is connected to the first end of first feedback resistance；The second end of first feedback resistance passes through one
First feedback capacity is connected to the positive input terminal of adjustment transport and placing device, and the second end of first feedback resistance is also connected to an adjustment
The anode of electrolytic capacitor, the cathode of the adjustment electrolytic capacitor are connected to the contact of adjustment potentiometer, adjust the first end of potentiometer
The negative input end of amplifier grade circuit afterbody transport and placing device is connected to, the second end for adjusting potentiometer is connected to amplifier grade circuit most
The positive input terminal of rear stage transport and placing device.Such structure makes balanced frequency modulation band broaden, and improves audio frequency process quality, optimization tuning effect
Fruit.
Further, L channel equalizing circuit, right channel equalizing circuit are respectively provided with seven sections of adjustment grade circuits；L channel is equal
The first end of the adjustment potentiometer of seven sections of adjustment grade circuits in weighing apparatus circuit is all connected to corresponding amplifier grade circuit afterbody fortune
Put the negative input end of device, the second ends of the adjustment potentiometers of seven sections of adjustment grade circuits be all connected to corresponding amplifier grade circuit last
The positive input terminal of grade transport and placing device；The first end of the adjustment potentiometer of seven sections of adjustment grade circuits in right channel equalizing circuit is all connected with
To the negative input end of corresponding amplifier grade circuit afterbody transport and placing device, the second ends of the adjustment potentiometer of seven sections of adjustment grade circuits are equal
It is connected to the positive input terminal of corresponding amplifier grade circuit afterbody transport and placing device.Such structure further widens balanced frequency modulation band,
Advanced optimize tuning effect.
Preferably, the amplifier grade circuit includes two stage amplifer device；Wherein, the negative input end of first order transport and placing device with it is corresponding
Input circuit connection, the positive input terminal ground connection of first order transport and placing device, the positive input terminal of first order transport and placing device and negative input end it
Between be also connected with there are one the first input resistance；The output terminal of first order transport and placing device is connected to first by second feedback resistance
The negative input end of grade transport and placing device, there are one the second feedback capacities for the both ends also parallel connection of the second feedback resistance；First order transport and placing device
Output terminal is connected to the positive input terminal of second level transport and placing device, the positive input terminal of second level transport and placing device by second input resistance
Also pass through second ground resistance earth；The output terminal of second level transport and placing device is connected to second by a third feedback resistance
The negative input end of grade transport and placing device, there are one third feedback capacities for the both ends also parallel connection of third feedback resistance；Second level transport and placing device is made
Afterbody transport and placing device for amplifier grade is connected with corresponding adjustment grade circuit；The output terminal of second level transport and placing device is electrolysed with output
The anode of capacitance is connected, and the cathode of the output electrolytic capacitor is the output terminal of amplifier grade circuit.
Further, MP3 decoding circuit is further included；The tuning control circuit is equipped with microcontroller and keyboard circuit, keyboard
Circuit is connect with microcontroller；MP3 decoding circuit is connect with microcontroller；The output terminal of MP3 decoding circuit is connected to L channel equilibrium
The input terminal of circuit and the input terminal of right channel equalizing circuit.Such structure enables sound console to be carried by storages such as USB flash disk, SD cards
Body plays MP3.
Still further, further include display chip and LED display；The LED display is connected to by display chip
Microcontroller.Such structure makes sound console have display function, can be with read clock and sequence state.
The sound console of the present invention carries power amplifier, can be used directly without external power amplifier, meets actual use
Demand；Balanced modulating bandwidth is promoted, the effect of bass is more preferable in attenuation, optimization tuning effect；And MP3 playing functions are carried,
USB flash disk, SD card etc. can be played.
Description of the drawings
Fig. 1 is the structure diagram of sound console of the present invention.
Fig. 2 is the structure diagram of the right channel equalizing circuit of sound console of the present invention.
Fig. 3 is the structure diagram of the noise reduction input circuit of the right channel equalizing circuit of sound console of the present invention.
Fig. 4 is the structure diagram of the amplifier grade circuit of the right channel equalizing circuit of sound console of the present invention.
Fig. 5 is the structure diagram of the adjustment grade circuit of the right channel equalizing circuit of sound console of the present invention.
Specific embodiment
The present invention is described in further detail in the following with reference to the drawings and specific embodiments.
As shown in Figure 1, the sound console of the present invention, including tuning control circuit 1 and equalizing circuit 2；Further include power amplifier
3；The equalizing circuit 2 includes L channel equalizing circuit 21 and right channel equalizing circuit 22；The input of L channel equalizing circuit 21
It holds, the input terminal R-IN of right channel equalizing circuit 22 is connect with tuning control circuit 1；The output of L channel equalizing circuit 21
It holds, the output terminal R-OUT of right channel equalizing circuit 22 is connect with power amplifier 3.Further include MP3 decoding circuit 41, display core
Piece 42 and LED display 43；The tuning control circuit 1 is equipped with microcontroller 11 and keyboard circuit 12, keyboard circuit 12 and monolithic
Machine 11 connects；MP3 decoding circuit 41 is connect with microcontroller 11；The output terminal of MP3 decoding circuit 41 is connected to the balanced electricity of L channel
The input terminal on road 21 and the input terminal R-IN of right channel equalizing circuit 22, the LED display 43 are connected by display chip 42
To microcontroller 11.
Specifically, as shown in Fig. 2, the L channel equalizing circuit 21, that right channel equalizing circuit 22 is each provided with noise reduction is defeated
Enter circuit 23, amplifier grade circuit 24 and adjustment grade circuit 25.In Fig. 2-Fig. 5 by taking right channel equalizing circuit 22 as an example, L channel is equal
Particular circuit configurations, device connection mode and the right channel equalizing circuit 22 of weighing apparatus circuit 21 are consistent.Right channel equalizing circuit 22
Input terminal R-IN is the first end of noise reduction input circuit 23, and the second end of noise reduction input circuit 23 is connected to amplifier grade circuit 24
Input terminal, the output terminal of amplifier grade are the output terminal R-OUT of right channel equalizing circuit 22；Adjustment grade circuit 25 is connected to amplifier grade
Circuit 24.
More specifically, as shown in figure 3, the noise reduction input circuit 23 includes noise reduction transport and placing device U1, noise reduction potentiometer W1, the
One diode D1, the second diode D2, the first triode Q1 and the second triode Q2.In the present embodiment, the first triode Q1 and
Second triode Q2 selects NPN triode.The positive input terminal ground connection of noise reduction transport and placing device U1, the output terminal of noise reduction transport and placing device U1 lead to
Cross the negative input end that a 4th feedback resistance R41 is connected to noise reduction transport and placing device U1；The negative input end of noise reduction transport and placing device U1 also connects
The cathode of an input electrolytic capacitor C12 is connected to, the anode of input electrolytic capacitor C12 is connected to a third input resistance
The first end of R32, the second end of third input resistance R32 are the first end of noise reduction input circuit 23, i.e. the balanced electricity of right channel
(by taking right channel equalizing circuit 22 as an example, similarly, the noise reduction in L channel equalizing circuit 21 inputs the input terminal R-IN on road 22
The first end of circuit 23 is the input terminal of L channel equalizing circuit 21).The output terminal of noise reduction transport and placing device U1 is also connected to the one or two
The anode of pole pipe D1, the cathode of the first diode D1 are connected to the base stage of the first triode Q1；The cathode of first diode D1 is also
It is connect with the cathode of the second diode D2, the plus earth of the second diode D2, the both ends of the second diode D2 are also parallel with
Three ground resistance R33 and third ground capacity C33；The emitter ground connection of first triode Q1, the collector of the first triode Q1
It is connect with the base stage of the second triode Q2；The base stage of second triode Q2 is also connected to the cathode of a first electrolytic capacitor C1,
The anode of first electrolytic capacitor C1 is connected to the emitter of the second triode Q2, and the collector of the second triode Q2 is connected to
The cathode of two electrolytic capacitor C2, the anode of the second electrolytic capacitor C2 are connected to the contact of noise reduction potentiometer W1.Noise reduction potentiometer W1
First end be connected to emitter and the ground connection of the second triode Q2, the second end of noise reduction potentiometer W1 passes through one the 4th input
Resistance R42 is connected to the anode of input electrolytic capacitor C12；The anode of second electrolytic capacitor C2 is the second of noise reduction input circuit 23
End, the i.e. output terminal of noise reduction input circuit 23, for being connected with corresponding amplifier grade circuit 24.In the present embodiment, the second electrolysis
The anode of capacitance C2 also first passes through the series arm of electrolytic capacitor C3 and the 5th input resistance R52, then is connect with power amplifier grade circuit,
Wherein the anode of the second electrolytic capacitor C2 is connect with the anode of third electrolytic capacitor C3.This noise reduction can not be used in actual implementation
Input circuit 23, and directly using other appearance resistance input circuits, but processing quality can be not so good as the present embodiment.
As shown in figure 4, the amplifier grade circuit 24 includes two stage amplifer device, i.e. first order transport and placing device U21 is transported with the second level
Put device U22.The negative input end of first order transport and placing device U21 is connect with noise reduction input circuit 23 (to be inputted i.e. in the present embodiment with the 5th
Resistance R52 connections), the positive input terminal ground connection of first order transport and placing device U21, the positive input terminal and negative input of first order transport and placing device U21
First input resistance R12 there are one being also connected between end；The output terminal of first order transport and placing device U21 passes through second feedback resistance
R21 is connected to the negative input end of first order transport and placing device U21, and there are one the second feedbacks for the both ends also parallel connection of the second feedback resistance R21
Capacitance C21.The output terminal of first order transport and placing device U21 is connected to second level transport and placing device U22's by a second input resistance R22
Positive input terminal, the positive input terminal of second level transport and placing device U22 are also grounded by a second ground resistance R23.Second level transport and placing device
The output terminal of U22 is connected to the negative input end of second level transport and placing device U22, third feedback electricity by a third feedback resistance R31
The both ends of resistance R31 are also in parallel, and there are one third feedback capacity C31；Positive input terminal, negative input end and the tune of second level transport and placing device U22
Whole grade circuit 25 connects；The anode of the output terminal of second level transport and placing device U22 and output electrolytic capacitor C4, output electrolytic capacitor C4
Cathode for amplifier grade circuit 24 output terminal, i.e. right channel equalizing circuit 22 output terminal R-OUT.Amplifier grade circuit 24 can be with
Using single-stage amplifier or the pattern of multilevel amplifiers, afterbody transport and placing device is only needed to be connect with adjustment grade circuit 25.
As shown in figure 5, the adjustment grade circuit 25 includes adjustment transport and placing device U3 and adjustment potentiometer W3；Adjust transport and placing device U3
Positive input terminal be grounded by a first ground resistance R13, the negative input end of adjustment transport and placing device U3 is with adjustment transport and placing device U3's
Output terminal connects；The output terminal of adjustment transport and placing device U3 is connected to the first end of a first feedback resistance R11；The first feedback electricity
The second end for hindering R11 is connected to the positive input terminal of adjustment transport and placing device U3 by a first feedback capacity C11, the first feedback electricity
The second end of resistance R11 is also connected to the anode of an adjustment electrolytic capacitor C5, and the cathode of adjustment electrolytic capacitor C5 is connected to tune
The contact of whole potentiometer W3, the first end of adjustment potentiometer W3 are connected to 24 afterbody transport and placing device (this implementation of amplifier grade circuit
Be second level transport and placing device U22 described above in example) negative input end, the second end of adjustment potentiometer W3 is connected to amplifier grade electricity
The positive input terminal of 24 afterbody transport and placing device of road.In the present embodiment, L channel equalizing circuit 21 and right channel equalizing circuit 22 are equal
Seven sections of adjustment grade circuits 25 are each provided with, still by taking right channel equalizing circuit 22 as an example, as shown in Figure 2 and Figure 5, each section of adjustment grade
The first end of adjustment potentiometer W3 in circuit 25 is all connected to together, and the second end of adjustment potentiometer W3 is also connected to together,
It is connected to the corresponding position of amplifier grade circuit 24, i.e., the positive input terminal and negative input of the above second level transport and placing device U22
End.In actual implementation, the adjustment grade circuit 25 of different number according to cost budgeting can be set, but reduce adjustment grade circuit 25
Quantity can reduce treatment effect；And when adjusting 25 quantity of grade circuit more than seven sections, cost improves, and the promotion for the treatment of effect is simultaneously
Not particularly significant, cost performance reduces, and needs the situation of the treatment effect of eight sections of adjustment grade circuits 25 few in actual use,
Thus seven sections are most preferably.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (6)
1. sound console, including tuning control circuit and equalizing circuit；It is characterized in that：Further include power amplifier；The balanced electricity
Road includes L channel equalizing circuit and right channel equalizing circuit；The input terminal of L channel equalizing circuit, right channel equalizing circuit
Input terminal is connect with tuning control circuit；The output terminal of L channel equalizing circuit, the output terminal of right channel equalizing circuit with
Power amplifier connects, wherein
The L channel equalizing circuit, right channel equalizing circuit are each provided with input circuit, amplifier grade circuit and adjustment grade circuit；
Wherein, the input terminal of L channel equalizing circuit, right channel equalizing circuit input terminal be respectively the first end of respective input circuit,
The second end of input circuit is connected to the input terminal of corresponding amplifier grade circuit；The amplifier grade circuit is at least provided with level-one amplifier
Device, adjustment grade circuit are connected to the input terminal of corresponding amplifier grade circuit afterbody transport and placing device, L channel equalizing circuit it is defeated
Outlet, right channel equalizing circuit output terminal are respectively the output terminal of corresponding amplifier grade circuit, wherein
The input circuit is noise reduction input circuit；The noise reduction input circuit includes noise reduction transport and placing device, noise reduction potentiometer, first
Diode, the second diode, the first triode and the second triode；The positive input terminal ground connection of noise reduction transport and placing device, noise reduction transport and placing device
Output terminal the negative input end of noise reduction transport and placing device is connected to by the 4th feedback resistance；The negative input end of noise reduction transport and placing device is also
The cathode of an input electrolytic capacitor is connected to, the anode of the input electrolytic capacitor is connected to the first of a third input resistance
End, the second end of the third input resistance are the first end of noise reduction input circuit；The output terminal of noise reduction transport and placing device is also connected to
The anode of one diode, the cathode of the first diode are connected to the base stage of the first triode；The cathode of first diode is also with
The cathode connection of two diodes, the plus earth of the second diode, the both ends of the second diode are also parallel with third ground resistance
With third ground capacity；The minus earth of first triode, the anode of the first triode are connect with the base stage of the second triode；The
The base stage of two triodes is also connected to the cathode of first electrolytic capacitor, and the anode of first electrolytic capacitor is connected to the two or three
The cathode of pole pipe, the anode of the second triode are connected to the cathode of the second electrolytic capacitor, and the anode of the second electrolytic capacitor is connected to
The contact of noise reduction potentiometer；The first end of noise reduction potentiometer is connected to the cathode of the second triode and ground connection, noise reduction potentiometer
Second end is connected to the anode of input electrolytic capacitor by the 4th input resistance；The anode of second electrolytic capacitor is defeated for noise reduction
Enter the second end of circuit.
2. sound console according to claim 1, it is characterised in that：The adjustment grade circuit includes adjustment transport and placing device and adjustment
Potentiometer；The positive input terminal of transport and placing device is adjusted by first ground resistance earth, adjusts the negative input end and tune of transport and placing device
The output terminal connection of whole transport and placing device；The output terminal of adjustment transport and placing device is connected to the first end of first feedback resistance；This first
The second end of feedback resistance is connected to the positive input terminal of adjustment transport and placing device, first feedback resistance by first feedback capacity
Second end be also connected to the anode of an adjustment electrolytic capacitor, the cathode of the adjustment electrolytic capacitor is connected to adjustment potentiometer
Contact, the first end for adjusting potentiometer are connected to the negative input end of amplifier grade circuit afterbody transport and placing device, adjust potentiometer
Second end is connected to the positive input terminal of amplifier grade circuit afterbody transport and placing device.
3. sound console according to claim 2, it is characterised in that：L channel equalizing circuit, right channel equalizing circuit are respectively set
There are seven sections of adjustment grade circuits；The first end of the adjustment potentiometer of seven sections of adjustment grade circuits in L channel equalizing circuit is all connected to
The negative input end of corresponding amplifier grade circuit afterbody transport and placing device, the second end of the adjustment potentiometer of seven sections of adjustment grade circuits connect
It is connected to the positive input terminal of corresponding amplifier grade circuit afterbody transport and placing device；Seven sections in right channel equalizing circuit adjust grade circuits
The first end of adjustment potentiometer is all connected to the negative input end of corresponding amplifier grade circuit afterbody transport and placing device, seven sections of adjustment grade electricity
The second end of the adjustment potentiometer on road is all connected to the positive input terminal of corresponding amplifier grade circuit afterbody transport and placing device.
4. sound console according to claim 3, it is characterised in that：The amplifier grade circuit includes two stage amplifer device；Wherein,
The negative input end of first order transport and placing device is connected with corresponding input circuit, the positive input terminal ground connection of first order transport and placing device, the first order
First input resistance there are one being also connected between the positive input terminal and negative input end of transport and placing device；The output terminal of first order transport and placing device leads to
The negative input end that second feedback resistance is connected to first order transport and placing device is crossed, there are one the both ends also parallel connections of the second feedback resistance
Second feedback capacity；The output terminal of first order transport and placing device is connected to the just defeated of second level transport and placing device by second input resistance
Enter end, the positive input terminal of second level transport and placing device also passes through second ground resistance earth；The output terminal of second level transport and placing device leads to
The negative input end that a third feedback resistance is connected to second level transport and placing device is crossed, there are one the both ends also parallel connections of third feedback resistance
Third feedback capacity；Second level transport and placing device is connected as the afterbody transport and placing device of amplifier grade with corresponding adjustment grade circuit；The
The output terminal of two level transport and placing device is connected with exporting the anode of electrolytic capacitor, and the cathode of the output electrolytic capacitor is amplifier grade circuit
Output terminal.
5. sound console according to claim 1, it is characterised in that：Further include MP3 decoding circuit；The tuning control circuit
Equipped with microcontroller and keyboard circuit, keyboard circuit is connect with microcontroller；MP3 decoding circuit is connect with microcontroller；MP3 decoding circuit
Output terminal be connected to the input terminal of L channel equalizing circuit and the input terminal of right channel equalizing circuit.
6. sound console according to claim 5, it is characterised in that：Further include display chip and LED display；The LED
Display screen is connected to microcontroller by display chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310561605.3A CN104639272B (en) | 2013-11-12 | 2013-11-12 | Sound console |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310561605.3A CN104639272B (en) | 2013-11-12 | 2013-11-12 | Sound console |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104639272A CN104639272A (en) | 2015-05-20 |
| CN104639272B true CN104639272B (en) | 2018-06-08 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310561605.3A Expired - Fee Related CN104639272B (en) | 2013-11-12 | 2013-11-12 | Sound console |
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| Country | Link |
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| CN (1) | CN104639272B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105376676A (en) * | 2015-11-24 | 2016-03-02 | 宁波柏人艾电子有限公司 | A loudspeaker box echo processing circuit |
| CN105485568A (en) * | 2015-11-25 | 2016-04-13 | 宁波市柯玛士太阳能科技有限公司 | Submarine light capable of being controlled and adjusted through audio frequency |
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