NL7200834A - - Google Patents
Info
- Publication number
- NL7200834A NL7200834A NL7200834A NL7200834A NL7200834A NL 7200834 A NL7200834 A NL 7200834A NL 7200834 A NL7200834 A NL 7200834A NL 7200834 A NL7200834 A NL 7200834A NL 7200834 A NL7200834 A NL 7200834A
- 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)
- Fuel Cell (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11216871A | 1971-02-03 | 1971-02-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL7200834A true NL7200834A (de) | 1972-08-07 |
Family
ID=22342450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL7200834A NL7200834A (de) | 1971-02-03 | 1972-01-20 |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US3745252A (de) |
| JP (2) | JPS5110961B1 (de) |
| BE (1) | BE778296A (de) |
| CA (1) | CA974887A (de) |
| DE (1) | DE2204098C3 (de) |
| FR (1) | FR2124264A1 (de) |
| GB (2) | GB1385651A (de) |
| IL (1) | IL38277A (de) |
| IT (1) | IT948353B (de) |
| NL (1) | NL7200834A (de) |
Families Citing this family (12)
| 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 |
| US3787622A (en) * | 1971-02-05 | 1974-01-22 | Sansui Electric Co | Quadrasonic sound system for two channel transmission |
| USRE29171E (en) * | 1971-07-02 | 1977-04-05 | Sansui Electric Co., Ltd. | Multi-directional sound system |
| US3906156A (en) | 1971-10-06 | 1975-09-16 | Duane H Cooper | Signal matrixing for directional reproduction of sound |
| JPS4889702A (de) * | 1972-02-25 | 1973-11-22 | ||
| JPS5210364B2 (de) * | 1972-05-02 | 1977-03-23 | ||
| CA997278A (en) * | 1972-05-30 | 1976-09-21 | Keiichiro Ogura | Discrete 4-channel stereo recording and/or reproducing system |
| JPS5332643B2 (de) * | 1972-06-06 | 1978-09-09 | ||
| JPS5246681B2 (de) * | 1972-12-29 | 1977-11-26 | ||
| JPS5248002B2 (de) * | 1973-09-18 | 1977-12-07 | ||
| EP1715538A1 (de) * | 2005-04-19 | 2006-10-25 | Nicholas M. Abson | Neue Materialien für alkalische Brennstoffzellen |
| EP1724861A1 (de) * | 2005-05-17 | 2006-11-22 | Nicholas M. Abson | Neue Materialien für alkalische Elektrolyseure und alkalische Brennstoffzellen |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3632886A (en) * | 1969-12-29 | 1972-01-04 | Peter Scheiber | Quadrasonic sound system |
-
1971
- 1971-02-03 US US00112168A patent/US3745252A/en not_active Expired - Lifetime
- 1971-12-01 CA CA129,044A patent/CA974887A/en not_active Expired
- 1971-12-01 IL IL38277A patent/IL38277A/xx unknown
-
1972
- 1972-01-20 NL NL7200834A patent/NL7200834A/xx unknown
- 1972-01-20 BE BE778296A patent/BE778296A/xx unknown
- 1972-01-25 FR FR7202454A patent/FR2124264A1/fr not_active Withdrawn
- 1972-01-27 IT IT47989/72A patent/IT948353B/it active
- 1972-01-28 DE DE2204098A patent/DE2204098C3/de not_active Expired
- 1972-02-02 GB GB497472A patent/GB1385651A/en not_active Expired
- 1972-02-03 JP JP47011924A patent/JPS5110961B1/ja active Pending
- 1972-07-11 GB GB497472A patent/GB1379846A/en not_active Expired
-
1975
- 1975-05-01 JP JP50052132A patent/JPS5140442B2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS50152701A (de) | 1975-12-09 |
| DE2204098C3 (de) | 1978-09-21 |
| JPS5140442B2 (de) | 1976-11-04 |
| FR2124264A1 (de) | 1972-09-22 |
| BE778296A (fr) | 1972-07-20 |
| DE2204098B2 (de) | 1978-02-09 |
| DE2204098A1 (de) | 1972-08-17 |
| GB1385651A (en) | 1975-02-26 |
| US3745252A (en) | 1973-07-10 |
| CA974887A (en) | 1975-09-23 |
| GB1379846A (en) | 1975-01-08 |
| JPS5110961B1 (de) | 1976-04-08 |
| IL38277A (en) | 1974-05-16 |
| IL38277A0 (en) | 1972-02-29 |
| IT948353B (it) | 1973-05-30 |