CN103533490B - Electron tube produces Virtual surround sound amplifier - Google Patents
Electron tube produces Virtual surround sound amplifier Download PDFInfo
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- CN103533490B CN103533490B CN201310491741.XA CN201310491741A CN103533490B CN 103533490 B CN103533490 B CN 103533490B CN 201310491741 A CN201310491741 A CN 201310491741A CN 103533490 B CN103533490 B CN 103533490B
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- 230000010363 phase shift Effects 0.000 claims description 19
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- 238000005516 engineering process Methods 0.000 abstract description 7
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- 230000008878 coupling Effects 0.000 description 6
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- 238000005859 coupling reaction Methods 0.000 description 6
- 230000005236 sound signal Effects 0.000 description 5
- 210000004556 brain Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000005611 electricity Effects 0.000 description 1
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Abstract
Electron tube produces Virtual surround sound amplifier, one of stereophony left channel signals exports termination left and right sound channels signal Hybrid amplifier circuit, and another output of stereophony left channel signals connects left channel signals rc phase shifter circuit, left channel signals variable resistance attenuator circuit and the right side, left channel signals Hybrid amplifier circuit successively; One of stereophony right-channel signals exports the termination right side, left channel signals Hybrid amplifier circuit, and another output of stereophony right-channel signals connects right-channel signals rc phase shifter circuit, right-channel signals variable resistance attenuator circuit and left and right sound channels signal Hybrid amplifier circuit successively; Left and right sound channels signal Hybrid amplifier circuit exports Virtual surround sound left channel signals, and right, left channel signals Hybrid amplifier circuit exports Virtual surround sound right-channel signals.The Virtual surround sound that can generate with the chip of existing digital processing technology compares favourably, but structure and production technology are simply, and production cost is low, is convenient to family and uses popularization.
Description
Technical field
The present invention relates to a kind of electron tube and produce Virtual surround sound devices and methods therefor.
Background technology
So-called surround sound, normally compared with stereophony, means that sound seems a kind of manner of playback that hearer is surrounded.The playback sound field that this mode produces, except the Sounnd source direction sense that maintain original signal, also supervenes the acoustics around sense and expansion sense.When listening surround sound, hearer can distinguish from sound all around, and namely surround sound can make spatial sound source expand to whole horizontal plane and even vertical plane by line.And the whole space of experiencing around oneself, all the spatial sound place that produces by these sound sources surround, thus build a kind of acoustics placing oneself in the midst of singing-hall, cinema.
In the realization of surround sound, typically quadraphony surround-sound system, the sampling of quadraphony sound source is carried out in left front, left back, right front, right back four orientation exactly four microphones being placed on respectively sound source, then, transmitted by the quadraphony, deliver to respectively and be placed on four left front, left back, right front, right back loud speakers of hearer, to reappear surround sound acoustics, Here it is 4.0 sound channel surround-sound systems.After add supper bass sound channel, claim 0.1 sound channel, be 4.1 sound channel surround-sound systems.Release again 5.1 sound channel surround-sound systems later, develop into 7.1 up-to-date sound channel surround-sound systems at present.But these surround-sound systems have a feature, when being exactly playback, need multiple channel amplifier and multiple audio amplifier.
Two channel stereo signal processed, make existing left front acoustic information in its left channel signals have again left back acoustic information, in right-channel signals, existing right front acoustic information has again right back acoustic information.Then utilize original left and right acoustic channels amplifier and the loud speaker playback of left and right, two fronts, people's ear hear after acoustic image in human brain feel it is typical quadraphony surround sound acoustic image sensation.Virtual surround sound technology that Here it is.
Now commercially release by the chip of two channel stereo signal generating virtual surround sound signal adopt be digital processing technology, first by two channel stereo signal, under control logic circuit controls, digital signal is transformed into through A/D converter, and with serial data form stored in random asccess memory.After depositing a period of time, still under the control of control logic circuit, take out serial data in order, the setting of data resting period is in memory the time of delay of audio signal.Digital audio and video signals after delayed, then through D/A change-over circuit, be reduced into the simulated audio signal after delay, then be superimposed upon original two channel stereo signal, generating virtual surround sound signal.Chip fabrication technique is complicated, and operation and controlling software programming is loaded down with trivial details, causes production cost high, expensive.
Summary of the invention
The technical problem to be solved in the present invention is, with electron tube and adjunct circuit by two channel stereo signal generating virtual surround sound signal, reach Structure and energy simple, production cost is low, is beneficial to and promotes the popularization use.
The present invention realizes above-mentioned purpose by the following technical solutions.
Electron tube produces Virtual surround sound amplifier, comprise stereophony left channel signals and stereophony right-channel signals and A power supply and b power supply, it is characterized in that: an output of stereophony left channel signals connects left and right sound channels signal Hybrid amplifier circuit, another output of stereophony left channel signals connects left channel signals rc phase shifter circuit, left channel signals variable resistance attenuator circuit and the right side, left channel signals Hybrid amplifier circuit successively; One output of stereophony right-channel signals connects right, left channel signals Hybrid amplifier circuit, and another output of stereophony right-channel signals connects right-channel signals rc phase shifter circuit, right-channel signals variable resistance attenuator circuit and left and right sound channels signal Hybrid amplifier circuit successively; The output of left and right sound channels signal Hybrid amplifier circuit exports Virtual surround sound left channel signals, and output that is right, left channel signals Hybrid amplifier circuit exports Virtual surround sound right-channel signals.
Described right-channel signals rc phase shifter circuit is made up of capacitor C2, resistor R2, rheostat W1 and resistor R3.
Described right-channel signals variable resistance attenuator circuit is made up of resistor R2, rheostat W1 and resistor R3.
Described left and right sound channels signal Hybrid amplifier circuit is made up of electron tube heptode G1, resistor R1, resistor R4, resistor R5 and capacitor C1, capacitor C3.
Described left channel signals rc phase shifter circuit is made up of capacitor C5, resistor R7, rheostat W2, resistor R8.
Described left channel signals variable resistance attenuator circuit is made up of resistor R7, rheostat W2 and resistor R8.
The described right side, left channel signals Hybrid amplifier circuit are made up of electron tube heptode G2, resistor R6, resistor R9, resistor R10 and capacitor C4, capacitor C6.
Electron tube produces the method for Virtual surround sound, comprises the following steps:
A, by the right-channel signals SR of two channel stereo signal through rc phase shifter circuit phase shift and variable resistance attenuator circuit decay after, input electron tube heptode G1 the 3rd grid, left channel signals SL inputs same electron tube heptode G1 first grid, utilize electron tube heptode G1 two different grid input Hybrid amplifier, electron tube heptode G1 anode exports Virtual surround sound left channel signals VSSL;
B, by the left channel signals SL of two channel stereo signal through rc phase shifter circuit phase shift and variable resistance attenuator circuit decay after, input electron tube heptode G2 the 3rd grid, right-channel signals SR inputs same electron tube heptode G2 first grid, utilize electron tube heptode G2 two different grid input Hybrid amplifier, electron tube heptode G2 anode exports Virtual surround sound right-channel signals VSSR.
Above-mentioned Virtual surround sound left channel signals and Virtual surround sound right-channel signals, amplify and the loud speaker playback of left and right, two fronts through dual-channel audio amplifier again, people's ear hear after acoustic image in human brain feel it is that typical quadraphony surround sound acoustic image is felt.
The Virtual surround sound that the tonequality of the Virtual surround sound that the present invention's electron tube and adjunct circuit produce can generate with the chip of existing digital processing technology compares favourably, even better, but structure and production technology are simply, and production cost is low, easy to use, be convenient to family and use popularization.
Accompanying drawing explanation
Fig. 1 is circuit design block diagram of the present invention.
Fig. 2 is a kind of implementing circuit figure of the present invention.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated.
Shown in Fig. 1 and Fig. 2, the present invention is made up of electron tube G1 and adjunct circuit generating virtual surround sound left channel signals 9 and electron tube G2 and adjunct circuit generating virtual surround sound right-channel signals 10.G1 is the electron tube heptode producing Virtual surround sound left channel signals, and G2 is the electron tube heptode producing Virtual surround sound right-channel signals.
Electron tube produces Virtual surround sound amplifier, comprise stereophony left channel signals 1 and stereophony right-channel signals 2 and A power supply 11 and b power supply 12, one output of stereophony left channel signals 1 connects left and right sound channels signal Hybrid amplifier circuit 7, and another output of stereophony left channel signals 1 connects left channel signals rc phase shifter circuit 4, left channel signals variable resistance attenuator circuit 6 and the right side, left channel signals Hybrid amplifier circuit 8 successively; One output of stereophony right-channel signals 2 connects right, left channel signals Hybrid amplifier circuit 8, and another output of stereophony right-channel signals 2 connects right-channel signals rc phase shifter circuit 3, right-channel signals variable resistance attenuator circuit 5 and left and right sound channels signal Hybrid amplifier circuit 7 successively; The output of left and right sound channels signal Hybrid amplifier circuit 7 exports Virtual surround sound left channel signals 9, and output that is right, left channel signals Hybrid amplifier circuit 8 exports Virtual surround sound right-channel signals 10.
Right-channel signals rc phase shifter circuit 3 in Fig. 1, is made up of the capacitor C2 in Fig. 2, resistor R2, rheostat W1 and resistor R3.
Right-channel signals variable resistance attenuator circuit 5 in Fig. 1, is made up of the resistor R2 in Fig. 2, rheostat W1 and resistor R3.
Left and right sound channels signal Hybrid amplifier circuit 7 in Fig. 1 is by electron tube heptode G1, capacitor C1, C3, and resistor R1, R4, R5 form.
The right-channel signals rc phase shifter circuit 3 of stereophony right-channel signals SR in Fig. 1 and right-channel signals variable resistance attenuator circuit 5, namely the capacitor C2 in Fig. 2, resistor R2, after the rc phase shifter circuit that rheostat W1 and resistor R3 forms and the phase shift of variable resistance attenuator circuit decay, the 3rd grid being connected to and producing Virtual surround sound left channel signals electron tube heptode G1 is exported by the tie point of rheostat W1 and resistor R3, the resistance changing rheostat W1 can change amount of phase shift and the attenuation of stereophony right-channel signals simultaneously, stereophony left channel signals SL is coupled to the first grid producing Virtual surround sound left channel signals electron tube heptode G1 through capacitor C1, the anode of electron tube G1 is through capacitor C3 coupling output Virtual surround sound left channel signals VSSL.
Left channel signals rc phase shifter circuit 4 in Fig. 1, is made up of the capacitor C5 in Fig. 2, resistor R7, rheostat W2 and resistor R8.
Left channel signals variable resistance attenuator circuit 6 in Fig. 1, is made up of the resistor R7 in Fig. 2, rheostat W2 and resistor R8.
The right side in Fig. 1, left channel signals Hybrid amplifier circuit 8, by electron tube heptode G2, capacitor C4, C6, resistor R6, R9, R10 form.
The left channel signals rc phase shifter circuit 4 of stereophony left channel signals SL in Fig. 1 and left channel signals variable resistance attenuator circuit 6, namely the capacitor C5 in Fig. 2, resistor R7, after the rc phase shifter circuit that rheostat W2 and resistor R8 forms and the phase shift of variable resistance attenuator circuit decay, the 3rd grid being connected to and producing Virtual surround sound right-channel signals electron tube heptode G2 is exported by the tie point of rheostat W2 and resistor R8, the resistance changing rheostat W2 can change amount of phase shift and the attenuation of stereophony left channel signals simultaneously, stereophony right-channel signals SR is coupled to the first grid producing Virtual surround sound right-channel signals electron tube heptode G2 through capacitor C4, the anode of electron tube G2 is through capacitor C6 coupling output Virtual surround sound right-channel signals VSSR.
C1, C3, C4, C6 are audio coupling capacitors, and C2, C5 are that capacitance-resistance phase shift is held concurrently audio coupling capacitor, and C7 is the filtering capacitor of b power supply.
R1 is electron tube G1 first grid grid resistor, R3 is that electron tube G1 the 3rd grid grid resistor is held concurrently capacitance-resistance phase shift and variable resistance attenuating resistor, R6 is electron tube G2 first grid grid resistor, R8 is that electron tube G2 the 3rd grid grid resistor is held concurrently capacitance-resistance phase shift and variable resistance attenuating resistor, R2, R7 is capacitance-resistance phase shift and variable resistance attenuating resistor, W1, W2 is capacitance-resistance phase shift and variable resistance decay rheostat, R4 is electron tube G1 second, four grid dropping resistors, R9 is electron tube G2 second, four grid dropping resistors, R5 is electron tube G1 anode step-down loading resistor, R10 is electron tube G2 anode step-down loading resistor.
After the A power supply 11 of Fig. 1 and the b power supply 12 i.e. first electricity of Fig. 2 and second electrically connect, stereophony left channel signals SL is coupled to the first grid of electron tube heptode G1 through capacitor C1, right-channel signals SR is through capacitor C2, resistor R2, export by the tie point of rheostat W1 and resistor R3 the 3rd grid sending into electron tube heptode G1 after the capacitance-resistance phase shift that rheostat W1 and resistor R3 forms and variable resistance attenuator circuit phase shift decay, the resistance changing rheostat W1 can change amount of phase shift and the attenuation of stereophony right-channel signals simultaneously, the anode of electron tube heptode G1 is through capacitor C3 coupling output Virtual surround sound left channel signals VSSL.
Stereophony right-channel signals SR is coupled to the first grid of electron tube heptode G2 through capacitor C4, left channel signals SL is through capacitor C5, resistor R7, export by the tie point of rheostat W2 and resistor R8 the 3rd grid sending into electron tube heptode G2 after the capacitance-resistance phase shift that rheostat W2 and resistor R8 forms and variable resistance attenuator circuit phase shift decay, the resistance changing rheostat W2 can change amount of phase shift and the attenuation of stereophony left channel signals simultaneously, the anode of electron tube heptode G2 is through capacitor C6 coupling output Virtual surround sound right-channel signals VSSR.
Claims (8)
1. electron tube produces Virtual surround sound amplifier, comprise stereophony left channel signals (1) and stereophony right-channel signals (2) and A power supply (11) and b power supply (12), it is characterized in that: by electron tube heptode (G1) and adjunct circuit generating virtual surround sound left channel signals (9), be made up of electron tube heptode (G2) and adjunct circuit generating virtual surround sound right-channel signals (10), one output of stereophony left channel signals (1) connects left, R channel Hybrid amplifier circuit (7), another output of stereophony left channel signals (1) connects left channel signals rc phase shifter circuit (4) successively, left channel signals variable resistance attenuator circuit (6) and the right side, left channel signals Hybrid amplifier circuit (8), one output of stereophony right-channel signals (2) connects right, left channel signals Hybrid amplifier circuit (8), and another output of stereophony right-channel signals (2) connects right-channel signals rc phase shifter circuit (3), right-channel signals variable resistance attenuator circuit (5) and left and right sound channels signal Hybrid amplifier circuit (7) successively, the output of left and right sound channels signal Hybrid amplifier circuit (7) exports Virtual surround sound left channel signals (9), and output that is right, left channel signals Hybrid amplifier circuit (8) exports Virtual surround sound right-channel signals (10).
2. electron tube according to claim 1 produces Virtual surround sound amplifier, it is characterized in that described right-channel signals rc phase shifter circuit (3) is made up of capacitor C2, resistor R2, rheostat W1 and resistor R3.
3. electron tube according to claim 1 produces Virtual surround sound amplifier, it is characterized in that described right-channel signals variable resistance attenuator circuit (5) is made up of resistor R2, rheostat W1 and resistor R3.
4. electron tube according to claim 1 produces Virtual surround sound amplifier, it is characterized in that described left and right sound channels signal Hybrid amplifier circuit (7) is made up of electron tube heptode G1, resistor R1, resistor R4, resistor R5 and capacitor C1, capacitor C3.
5. electron tube according to claim 1 produces Virtual surround sound amplifier, it is characterized in that described left channel signals rc phase shifter circuit (4) is made up of capacitor C5, resistor R7, rheostat W2, resistor R8.
6. electron tube according to claim 1 produces Virtual surround sound amplifier, it is characterized in that described left channel signals variable resistance attenuator circuit (6) is made up of resistor R7, rheostat W2 and resistor R8.
7. electron tube according to claim 1 produces Virtual surround sound amplifier, it is characterized in that the described right side, left channel signals Hybrid amplifier circuit (8) is made up of electron tube heptode G2, resistor R6, resistor R9, resistor R10 and capacitor C4, capacitor C6.
8. electron tube produces the method for Virtual surround sound, and its feature comprises the following steps:
A, by the right-channel signals SR of two channel stereo signal through rc phase shifter circuit phase shift and variable resistance attenuator circuit decay after, input electron tube heptode G1 the 3rd grid, left channel signals SL inputs same electron tube heptode G1 first grid, utilize electron tube heptode G1 two different grid input Hybrid amplifier, electron tube heptode G1 anode exports Virtual surround sound left channel signals VSSL;
B, by the left channel signals SL of two channel stereo signal through rc phase shifter circuit phase shift and variable resistance attenuator circuit decay after, input electron tube heptode G2 the 3rd grid, right-channel signals SR inputs same electron tube heptode G2 first grid, utilize electron tube heptode G2 two different grid input Hybrid amplifier, electron tube heptode G2 anode exports Virtual surround sound right-channel signals VSSR.
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| CN201310491741.XA CN103533490B (en) | 2013-10-21 | 2013-10-21 | Electron tube produces Virtual surround sound amplifier |
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| CN201310491741.XA CN103533490B (en) | 2013-10-21 | 2013-10-21 | Electron tube produces Virtual surround sound amplifier |
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| CN103533490B true CN103533490B (en) | 2016-01-13 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1714599A (en) * | 2002-11-22 | 2005-12-28 | 诺基亚有限公司 | Output Equalization in Stereo Expansion Networks |
| CN1953618A (en) * | 2005-10-20 | 2007-04-25 | 雅马哈株式会社 | Speaker driving apparatus |
| CN102438199A (en) * | 2011-09-06 | 2012-05-02 | 深圳东原电子有限公司 | Method for enlarging listening zone of virtual surround sound |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201039448Y (en) * | 2007-04-16 | 2008-03-19 | 深圳市胆艺高音响器材有限公司 | A novel MP5 electronic tube power amplifier |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1714599A (en) * | 2002-11-22 | 2005-12-28 | 诺基亚有限公司 | Output Equalization in Stereo Expansion Networks |
| CN1953618A (en) * | 2005-10-20 | 2007-04-25 | 雅马哈株式会社 | Speaker driving apparatus |
| CN102438199A (en) * | 2011-09-06 | 2012-05-02 | 深圳东原电子有限公司 | Method for enlarging listening zone of virtual surround sound |
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| CN103533490A (en) | 2014-01-22 |
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