CN1049788C - Two-accustic channel three-dimension stereo processor - Google Patents
Two-accustic channel three-dimension stereo processor Download PDFInfo
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- CN1049788C CN1049788C CN97105179A CN97105179A CN1049788C CN 1049788 C CN1049788 C CN 1049788C CN 97105179 A CN97105179 A CN 97105179A CN 97105179 A CN97105179 A CN 97105179A CN 1049788 C CN1049788 C CN 1049788C
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Abstract
The present invention relates to a two-sound channel three-dimensional stereophony processor, which is composed of subtractors. The signal of the left sound channel is processed into (m plus n) L minus n R by two subtractors with completely same structures, and the signal of the right sound channel is processed onto (m plus n) R minus n L, so the comprehensive effects similar to the SRS two-sound channel three-dimensional stereophony and the digital delay surrounding sound can be realized. The m is an odd number, and the middle sound is stronger when the odd number is bigger. The n is a natural number, and the space sense is stronger when the natural number is bigger.
Description
The present invention relates to a kind of high-fidelity music center processor, particularly relate to a kind of two-accustic channel three-dimension stereo processor.
It is reported that two-accustic channel three-dimension stereo processor begins for U.S. SRS.SRS two-accustic channel three-dimension stereo audition in a sizable border circular areas all has stronger third dimension, " emperor " position when having eliminated the normal stereo audition.This is the remarkable advantage of SRS.According to " electronics newspaper " (address: the article introduction of No. 75, Chengdu Jin Hejie) 1997 phase on May 25, the 21st the 13 edition " talking the new IC-M62430 of SRS and SRS again ", the signal processing of SRS circuit is very loaded down with trivial details, with wherein left channel signals L and right-channel signals R of input carried out repeatedly adding, subtracted, paraphase, frequency compensation and amplification, signal is sustained a loss and produce distortion, also make circuit too complicated, not only increase cost but also reduce reliability.Phase in " electronics newspaper " 25 days the 21st May in 1997 the 13 edition article of introducing that upward also has one piece of name to be called " SRS5250S high-fidelity 3D is around the upgrading plate ", the SRS5250S that is introduced upgrading plate is also quite complicated, and price is very expensive, sells 168 yuan for every.The cost of this explanation SRS5250S is not low yet.
Purpose of the present invention is to provide a kind of fidelity height and the foolproof two-accustic channel three-dimension stereo processor of circuit.This processor also has the depth feelings effect of digital delay type space surround sound except that can realizing similar SRS two-accustic channel three-dimension stereo effect, that is the space sound field of building is bigger, and has higher fidelity.Because simple the getting of circuit can not be simple again, both reduced cost, improved reliability again.
The present invention is achieved in that two identical in structure subtracters of design, the in-phase end that makes a subtracter with meet the input signal L of L channel and the input signal R of R channel respectively after the end of oppisite phase of another subtracter links to each other, and make the output signal of one of them subtracter be (m+n) L-nR, the output signal of another subtracter is (m+n) R-nL, respectively as the 3 D stereo acoustic output signal of left and right sound channels.M gets odd number, and in order to regulate intermediate sound and spatial impression, value is big more, and intermediate sound and spatial impression are strong more; N gets natural number, and in order to regulate spatial impression, value is big more, and spatial impression is strong more.
The subtracter that the present invention uses is connected and composed by resistance and amplifier.The output of amplifier is connected with its end of oppisite phase by resistance, the in-phase end of amplifier is connected with the subtracter in-phase end by resistance, the end of oppisite phase of amplifier is connected with the subtracter end of oppisite phase by resistance, the output of amplifier is connected with the output of subtracter, and the in-phase end of amplifier and end of oppisite phase also connect a resistance respectively to ground.The m+n of the resistance of the resistance that is connected between the resistance of the resistance that is connected between the output of amplifier and the end of oppisite phase, the in-phase end that is respectively amplifier and subtracter in-phase end doubly and n times of the resistance of the resistance that is connected between the end of oppisite phase of amplifier and the subtracter end of oppisite phase.The value of the in-phase end of amplifier and end of oppisite phase resistance to earth must make the whole resistance values in parallel of amplifier in-phase end equal whole resistance parallel connection values of amplifier end of oppisite phase.
Accompanying drawing 1 is a schematic diagram of the present invention, and accompanying drawing 2 is structure charts of the used subtracter of the present invention.Now be described further in conjunction with the accompanying drawings.
As Fig. 1, the present invention is connected and composed by the 1st subtracter 13 and the 2nd subtracter 13, the in-phase end 9 of the 1st subtracter 13 and the input L that connects L channel after the end of oppisite phase 10 of the 2nd subtracter 13 is connected
IN, the end of oppisite phase 10 of the 1st subtracter 13 is connected the input R that R channel is pressed in the back with the in-phase end 9 of the 2nd subtracter 13
IN, the output 12 of the 1st subtracter 13 meets the output L of L channel
OUT, the output 12 of the 2nd subtracter 13 meets the output R of R channel
OUT, earth terminal 11 ground connection of the 1st subtracter 13, the earth terminal 11 of the 2nd subtracter 13 is ground connection also, L channel output L
OUTOutput 3 D stereo acoustical signal (m+n) L-nR, R channel output R
OUTOutput 3 D stereo acoustical signal (m+n) R-nL.
As Fig. 2, the used subtracter 13 of the present invention is by the 1st resistance 1, the 2nd resistance 2, the 3rd resistance 3, the 4th resistance 4, the 5th resistance 5 and amplifier 6 connect and compose, the output of subtracter 13 is the output 12 of amplifier 6 connects amplifier 6 by the 5th resistance 5 a end of oppisite phase 8, the in-phase end 7 of amplifier 6 connects the in-phase end 9 of subtracter 13 by the 1st resistance 1, the end of oppisite phase 8 of amplifier 6 connects the end of oppisite phase 10 of subtracter 13 by the 3rd resistance 3, the in-phase end 7 of amplifier 6 and end of oppisite phase 8 are connected the earth terminal 11 of subtracter 13 respectively with the 4th resistance 4 by the 2nd resistance 2, the resistance of the 5th resistance 5 be the 1st resistance 1 resistance m+n doubly and the n of the resistance of the 3rd resistance 3 doubly, the value of the 2nd resistance 2 and the 4th resistance 4 must make the whole resistance values in parallel of amplifier 6 in-phase ends 7 equal whole resistance parallel connection values of amplifier 6 end of oppisite phase 8.
Claims (4)
1, a kind of two-accustic channel three-dimension stereo processor, connect and compose in-phase end (9) that it is characterized in that the 1st subtracter (13) and the input (L that connects L channel after the end of oppisite phase (10) of the 2nd subtracter (13) is connected by identical in structure the 1st subtracter (13) and the 2nd subtracter (13)
IN), the end of oppisite phase (10) of the 1st subtracter (13) and the input (R that connects R channel after the in-phase end (9) of the 2nd subtracter (13) is connected
IN), the output (12) of the 1st subtracter (13) is as the output (L of L channel
OUT), the output (12) of the 2nd subtracter (13) is as the output (R of R channel
OUT), earth terminal (11) ground connection of the 1st subtracter (13), the earth terminal (11) of the 2nd subtracter (13) is ground connection also, after the treated device of the input signal L of L channel and the input signal R of R channel is handled, from L channel output (L
OUT) output (m+n) L-nR 3 D stereo acoustical signal, from R channel output (R
OUT) output (m+n) R-nL 3 D stereo acoustical signal, the m in the 3 D stereo acoustical signal gets odd number, and in order to regulate intermediate sound and spatial impression, n gets natural number, in order to regulate spatial impression.
2, processor according to claim 1, the subtracter (13) that it is characterized in that forming it is connected and composed by the 1st resistance (1), the 2nd resistance (2), the 3rd resistance (3), the 4th resistance (4), the 5th resistance (5) and amplifier (6).
3, processor according to claim 2, the resistance of the 5th resistance (5) that is connected between the output (12) that it is characterized in that subtracter (13) and amplifier (6) end of oppisite phase (8), be respectively the 1st resistance (1) that is connected between in-phase end (9) and amplifier (6) in-phase end (7) of subtracter (13) resistance m+n doubly and n times of the resistance of the 3rd resistance (3) that is connected between the end of oppisite phase (10) of subtracter (13) and fortune effect (6) end of oppisite phase (8).
4, processor according to claim 2 is characterized in that the 2nd resistance (2) that is connected between the earth terminal (11) of amplifier (6) in-phase end (7) and end of oppisite phase (8) and subtracter (13) and the value of the 4th resistance (4) must make whole resistance values in parallel of amplifier (6) in-phase end (7) equal whole resistance parallel connection values of amplifier (6) end of oppisite phase (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97105179A CN1049788C (en) | 1997-07-20 | 1997-07-20 | Two-accustic channel three-dimension stereo processor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97105179A CN1049788C (en) | 1997-07-20 | 1997-07-20 | Two-accustic channel three-dimension stereo processor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1190861A CN1190861A (en) | 1998-08-19 |
| CN1049788C true CN1049788C (en) | 2000-02-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97105179A Expired - Fee Related CN1049788C (en) | 1997-07-20 | 1997-07-20 | Two-accustic channel three-dimension stereo processor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1049788C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100636252B1 (en) * | 2005-10-25 | 2006-10-19 | 삼성전자주식회사 | Method and apparatus for generating spatial stereo sound |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2160170Y (en) * | 1993-05-07 | 1994-03-30 | 王天资 | Transistor Constant Current Power Amplifier |
| EP0773720A1 (en) * | 1994-07-22 | 1997-05-21 | Rhone-Poulenc Agrochimie | Fungicidal composition including a 2-imidazoline-5-one |
-
1997
- 1997-07-20 CN CN97105179A patent/CN1049788C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2160170Y (en) * | 1993-05-07 | 1994-03-30 | 王天资 | Transistor Constant Current Power Amplifier |
| EP0773720A1 (en) * | 1994-07-22 | 1997-05-21 | Rhone-Poulenc Agrochimie | Fungicidal composition including a 2-imidazoline-5-one |
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| Publication number | Publication date |
|---|---|
| CN1190861A (en) | 1998-08-19 |
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