NL7208607A - - Google Patents
Info
- Publication number
- NL7208607A NL7208607A NL7208607A NL7208607A NL7208607A NL 7208607 A NL7208607 A NL 7208607A NL 7208607 A NL7208607 A NL 7208607A NL 7208607 A NL7208607 A NL 7208607A NL 7208607 A NL7208607 A NL 7208607A
- Authority
- NL
- Netherlands
Links
Classifications
-
- 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
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Algebra (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Mathematical Physics (AREA)
- Pure & Applied Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Stereophonic System (AREA)
- Stereo-Broadcasting Methods (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15597671A | 1971-06-23 | 1971-06-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL7208607A true NL7208607A (en) | 1972-12-28 |
Family
ID=22557545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL7208607A NL7208607A (en) | 1971-06-23 | 1972-06-22 |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US3798373A (en) |
| JP (1) | JPS5110963B1 (en) |
| AU (1) | AU464001B2 (en) |
| BE (1) | BE785279A (en) |
| CA (1) | CA973806A (en) |
| DE (1) | DE2230842C3 (en) |
| FR (1) | FR2143325B1 (en) |
| GB (1) | GB1396352A (en) |
| IT (1) | IT958512B (en) |
| NL (1) | NL7208607A (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1398786A (en) * | 1971-08-06 | 1975-06-25 | Sony Corp | Multisignal transmission apparatus |
| DE2252132C3 (en) | 1972-10-24 | 1982-08-26 | Sansui Electric Co., Ltd., Tokyo | Decoder for a 4-2-4 matrix system |
| JPS5527517B2 (en) * | 1972-12-01 | 1980-07-21 | ||
| JPS5320343B2 (en) * | 1973-03-29 | 1978-06-26 | ||
| GB1514162A (en) * | 1974-03-25 | 1978-06-14 | Ruggles W | Directional enhancement system for quadraphonic decoders |
| US3937885A (en) * | 1974-09-06 | 1976-02-10 | Motorola, Inc. | Control circuit for a matrixed four channel audio reproducing system |
| JPS5453831U (en) * | 1977-09-22 | 1979-04-13 | ||
| JPS54137248U (en) * | 1978-03-17 | 1979-09-22 | ||
| US4799260A (en) * | 1985-03-07 | 1989-01-17 | Dolby Laboratories Licensing Corporation | Variable matrix decoder |
| US5046098A (en) * | 1985-03-07 | 1991-09-03 | Dolby Laboratories Licensing Corporation | Variable matrix decoder with three output channels |
| US4862502A (en) * | 1988-01-06 | 1989-08-29 | Lexicon, Inc. | Sound reproduction |
| US5136650A (en) * | 1991-01-09 | 1992-08-04 | Lexicon, Inc. | Sound reproduction |
| US5796844A (en) * | 1996-07-19 | 1998-08-18 | Lexicon | Multichannel active matrix sound reproduction with maximum lateral separation |
| US5870480A (en) * | 1996-07-19 | 1999-02-09 | Lexicon | Multichannel active matrix encoder and decoder with maximum lateral separation |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3632886A (en) * | 1969-12-29 | 1972-01-04 | Peter Scheiber | Quadrasonic sound system |
| US3646574A (en) * | 1970-05-25 | 1972-02-29 | Howard S Holzer | Compatible stereo generator |
| US3684835A (en) * | 1970-07-29 | 1972-08-15 | Parasound Inc | Four channel stereo synthesizer |
-
1971
- 1971-06-23 US US00155976A patent/US3798373A/en not_active Expired - Lifetime
-
1972
- 1972-06-13 CA CA144,532A patent/CA973806A/en not_active Expired
- 1972-06-22 AU AU43775/72A patent/AU464001B2/en not_active Expired
- 1972-06-22 FR FR7222631A patent/FR2143325B1/fr not_active Expired
- 1972-06-22 NL NL7208607A patent/NL7208607A/xx not_active Application Discontinuation
- 1972-06-22 BE BE785279A patent/BE785279A/en unknown
- 1972-06-23 DE DE2230842A patent/DE2230842C3/en not_active Expired
- 1972-06-23 IT IT51115/72A patent/IT958512B/en active
- 1972-06-23 GB GB2958472A patent/GB1396352A/en not_active Expired
- 1972-06-23 JP JP47063100A patent/JPS5110963B1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE2230842C3 (en) | 1980-10-16 |
| IT958512B (en) | 1973-10-30 |
| AU4377572A (en) | 1974-01-03 |
| FR2143325B1 (en) | 1979-04-06 |
| BE785279A (en) | 1972-10-16 |
| US3798373A (en) | 1974-03-19 |
| AU464001B2 (en) | 1975-08-14 |
| DE2230842B2 (en) | 1980-02-21 |
| CA973806A (en) | 1975-09-02 |
| FR2143325A1 (en) | 1973-02-02 |
| DE2230842A1 (en) | 1972-12-28 |
| JPS5110963B1 (en) | 1976-04-08 |
| GB1396352A (en) | 1975-06-04 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| BC | A request for examination has been filed | ||
| BV | The patent application has lapsed |