NL7203169A - - Google Patents
Info
- Publication number
- NL7203169A NL7203169A NL7203169A NL7203169A NL7203169A NL 7203169 A NL7203169 A NL 7203169A NL 7203169 A NL7203169 A NL 7203169A NL 7203169 A NL7203169 A NL 7203169A NL 7203169 A NL7203169 A NL 7203169A
- 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)
- Mathematical Physics (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Algebra (AREA)
- Pure & Applied Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Stereophonic System (AREA)
- Stereo-Broadcasting Methods (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US00124135A US3821471A (en) | 1971-03-15 | 1971-03-15 | Apparatus for reproducing quadraphonic sound |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL7203169A true NL7203169A (de) | 1972-09-19 |
Family
ID=22412987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL7203169A NL7203169A (de) | 1971-03-15 | 1972-03-09 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3821471A (de) |
| JP (2) | JPS5110962B2 (de) |
| BE (2) | BE780711R (de) |
| CA (1) | CA978860A (de) |
| DE (1) | DE2209424C3 (de) |
| FR (2) | FR2130305B2 (de) |
| GB (1) | GB1387874A (de) |
| NL (1) | NL7203169A (de) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5645358B2 (de) * | 1973-11-29 | 1981-10-26 | ||
| JPS5424841B2 (de) * | 1974-02-26 | 1979-08-24 | ||
| 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 |
| US4018992A (en) * | 1975-09-25 | 1977-04-19 | Clifford H. Moulton | Decoder for quadraphonic playback |
| GB1550627A (en) * | 1975-11-13 | 1979-08-15 | Nat Res Dev | Sound reproduction systems |
| JPS5827645B2 (ja) * | 1977-11-24 | 1983-06-10 | 株式会社日立製作所 | 静止誘導機器 |
| US4941177A (en) * | 1985-03-07 | 1990-07-10 | Dolby Laboratories Licensing Corporation | Variable matrix decoder |
| 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 |
| US7251337B2 (en) * | 2003-04-24 | 2007-07-31 | Dolby Laboratories Licensing Corporation | Volume control in movie theaters |
| JP5092400B2 (ja) * | 2004-06-28 | 2012-12-05 | 味の素株式会社 | 栄養組成物および消化管機能低下予防・改善用組成物 |
| JP4835298B2 (ja) * | 2006-07-21 | 2011-12-14 | ソニー株式会社 | オーディオ信号処理装置、オーディオ信号処理方法およびプログラム |
| US11039263B2 (en) * | 2019-05-29 | 2021-06-15 | Mark Petrouske | Wide effect sound producing method |
-
1971
- 1971-03-15 US US00124135A patent/US3821471A/en not_active Expired - Lifetime
-
1972
- 1972-01-28 CA CA133,379A patent/CA978860A/en not_active Expired
- 1972-02-23 GB GB841272A patent/GB1387874A/en not_active Expired
- 1972-02-28 DE DE2209424A patent/DE2209424C3/de not_active Expired
- 1972-03-09 NL NL7203169A patent/NL7203169A/xx not_active Application Discontinuation
- 1972-03-13 JP JP47024794A patent/JPS5110962B2/ja not_active Expired
- 1972-03-15 BE BE780711A patent/BE780711R/xx active
- 1972-03-15 FR FR7209093A patent/FR2130305B2/fr not_active Expired
- 1972-03-15 BE BE780710A patent/BE780710R/xx active
- 1972-03-15 FR FR7209094A patent/FR2130306B2/fr not_active Expired
-
1975
- 1975-07-21 JP JP8911275A patent/JPS5316281B2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1387874A (en) | 1975-03-19 |
| JPS5316281B2 (de) | 1978-05-31 |
| FR2130305B2 (de) | 1979-04-27 |
| FR2130306B2 (de) | 1977-12-23 |
| DE2209424A1 (de) | 1972-09-28 |
| US3821471A (en) | 1974-06-28 |
| FR2130305A2 (de) | 1972-11-03 |
| BE780711R (fr) | 1972-09-15 |
| BE780710R (fr) | 1972-09-15 |
| DE2209424C3 (de) | 1978-09-28 |
| DE2209424B2 (de) | 1978-01-26 |
| FR2130306A2 (de) | 1972-11-03 |
| JPS5110962B2 (de) | 1976-04-08 |
| CA978860A (en) | 1975-12-02 |
| JPS5136903A (de) | 1976-03-29 |
| JPS4849401A (de) | 1973-07-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| BV | The patent application has lapsed |