JPS5656100A - Stereophonic signal processing circuit - Google Patents
Stereophonic signal processing circuitInfo
- Publication number
- JPS5656100A JPS5656100A JP13187779A JP13187779A JPS5656100A JP S5656100 A JPS5656100 A JP S5656100A JP 13187779 A JP13187779 A JP 13187779A JP 13187779 A JP13187779 A JP 13187779A JP S5656100 A JPS5656100 A JP S5656100A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- output
- subtracter
- adder
- analog
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMSÂ
- H04S1/00—Two-channel systems
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Stereophonic System (AREA)
Abstract
PURPOSE:To eliminate a change in sound volume in normal operation and stereophonic widening operation by applying an (L+R) signal to one-side input terminals of an analog adder and analog subtracter and then by changing a signal applied to other-side input terminals over to an (L-R) signal. CONSTITUTION:Of a TV sound multiplex broadcast signal, the (L+R) signal and (L-R) signal are applied to analog adder 21 and analog subtracter 22. With switch means SW OFF, stereophonic widening opetation is performed and while a (2+ n)L-n.R signal is obtained from the output of adder 21, a (2+n)R-n.L is obtained from the output of subtracter 22. Normal stereophonic sound reproduction is carried out with switch means SW ON and while a 2L signal is obtained from the output of adder 21, a 2R signal is obtained from the output of subtracter 22. Therefore, the whole volume in stereophonic widening mode is (2+n)L-n.R+(2+ n)R-n.L=2(L+R), which is equal to the whole volume 2(L+R) in normal operation, so that a volume change can be eliminated on the whole.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13187779A JPS5656100A (en) | 1979-10-15 | 1979-10-15 | Stereophonic signal processing circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13187779A JPS5656100A (en) | 1979-10-15 | 1979-10-15 | Stereophonic signal processing circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5656100A true JPS5656100A (en) | 1981-05-16 |
JPS6236440B2 JPS6236440B2 (en) | 1987-08-06 |
Family
ID=15068222
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13187779A Granted JPS5656100A (en) | 1979-10-15 | 1979-10-15 | Stereophonic signal processing circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5656100A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6765570B1 (en) | 1998-07-21 | 2004-07-20 | Magic Earth, Inc. | System and method for analyzing and imaging three-dimensional volume data sets using a three-dimensional sampling probe |
-
1979
- 1979-10-15 JP JP13187779A patent/JPS5656100A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6236440B2 (en) | 1987-08-06 |
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