JPS5240561B1 - - Google Patents
Info
- Publication number
- JPS5240561B1 JPS5240561B1 JP47006291A JP629172A JPS5240561B1 JP S5240561 B1 JPS5240561 B1 JP S5240561B1 JP 47006291 A JP47006291 A JP 47006291A JP 629172 A JP629172 A JP 629172A JP S5240561 B1 JPS5240561 B1 JP S5240561B1
- Authority
- JP
- Japan
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00992—Circuits for stereophonic or quadraphonic recording or reproducing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
- H04S3/02—Systems employing more than two channels, e.g. quadraphonic of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Mathematical Physics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- General Physics & Mathematics (AREA)
- Pure & Applied Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Acoustics & Sound (AREA)
- Algebra (AREA)
- Stereophonic System (AREA)
- Circuit For Audible Band Transducer (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11827171A | 1971-02-24 | 1971-02-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5240561B1 true JPS5240561B1 (de) | 1977-10-13 |
Family
ID=22377557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP47006291A Pending JPS5240561B1 (de) | 1971-02-24 | 1972-01-17 |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US3784744A (de) |
| JP (1) | JPS5240561B1 (de) |
| AU (1) | AU460098B2 (de) |
| BE (1) | BE777215A (de) |
| CA (1) | CA981589A (de) |
| DE (1) | DE2208099C3 (de) |
| FR (1) | FR2126176B1 (de) |
| GB (2) | GB1387873A (de) |
| IL (1) | IL38130A (de) |
| IT (1) | IT948394B (de) |
| NL (1) | NL7115538A (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3911222A (en) * | 1970-12-09 | 1975-10-07 | Kenwood Corp | Method and a device for producing a 4-channel stereophonic sound field |
| US3883692A (en) * | 1972-06-16 | 1975-05-13 | Sony Corp | Decoder apparatus with logic circuit for use with a four channel stereo |
| JPS5645358B2 (de) * | 1973-11-29 | 1981-10-26 | ||
| US5046098A (en) * | 1985-03-07 | 1991-09-03 | Dolby Laboratories Licensing Corporation | Variable matrix decoder with three output channels |
| US4799260A (en) * | 1985-03-07 | 1989-01-17 | Dolby Laboratories Licensing Corporation | Variable matrix decoder |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3632886A (en) * | 1969-12-29 | 1972-01-04 | Peter Scheiber | Quadrasonic sound system |
| US3708631A (en) * | 1970-06-08 | 1973-01-02 | Columbia Broadcasting Syst Inc | Quadraphonic reproducing system with gain control |
-
1971
- 1971-02-24 US US00118271A patent/US3784744A/en not_active Expired - Lifetime
- 1971-11-08 CA CA127,101A patent/CA981589A/en not_active Expired
- 1971-11-11 IL IL38130A patent/IL38130A/xx unknown
- 1971-11-11 NL NL7115538A patent/NL7115538A/xx not_active Application Discontinuation
- 1971-12-20 AU AU37107/71A patent/AU460098B2/en not_active Expired
- 1971-12-23 FR FR7146313A patent/FR2126176B1/fr not_active Expired
- 1971-12-23 BE BE777215A patent/BE777215A/xx unknown
-
1972
- 1972-01-17 JP JP47006291A patent/JPS5240561B1/ja active Pending
- 1972-02-01 IT IT48082/72A patent/IT948394B/it active
- 1972-02-11 GB GB658072A patent/GB1387873A/en not_active Expired
- 1972-02-11 GB GB658172A patent/GB1379771A/en not_active Expired
- 1972-02-21 DE DE722208099A patent/DE2208099C3/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| IL38130A (en) | 1974-09-10 |
| NL7115538A (de) | 1972-08-28 |
| DE2208099A1 (de) | 1972-09-07 |
| FR2126176B1 (de) | 1976-04-30 |
| AU3710771A (en) | 1973-06-28 |
| GB1387873A (en) | 1975-03-19 |
| DE2208099B2 (de) | 1978-07-06 |
| US3784744A (en) | 1974-01-08 |
| FR2126176A1 (de) | 1972-10-06 |
| AU460098B2 (en) | 1975-04-17 |
| CA981589A (en) | 1976-01-13 |
| IT948394B (it) | 1973-05-30 |
| IL38130A0 (en) | 1972-01-27 |
| GB1379771A (en) | 1975-01-08 |
| DE2208099C3 (de) | 1979-03-01 |
| BE777215A (fr) | 1972-06-23 |