FR2130305A2 - - Google Patents
Info
- Publication number
- FR2130305A2 FR2130305A2 FR7209093A FR7209093A FR2130305A2 FR 2130305 A2 FR2130305 A2 FR 2130305A2 FR 7209093 A FR7209093 A FR 7209093A FR 7209093 A FR7209093 A FR 7209093A FR 2130305 A2 FR2130305 A2 FR 2130305A2
- Authority
- FR
- France
- 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 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 (2)
| Publication Number | Publication Date |
|---|---|
| FR2130305A2 true FR2130305A2 (en) | 1972-11-03 |
| FR2130305B2 FR2130305B2 (en) | 1979-04-27 |
Family
ID=22412987
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7209093A Expired FR2130305B2 (en) | 1971-03-15 | 1972-03-15 | |
| FR7209094A Expired FR2130306B2 (en) | 1971-03-15 | 1972-03-15 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7209094A Expired FR2130306B2 (en) | 1971-03-15 | 1972-03-15 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3821471A (en) |
| JP (2) | JPS5110962B2 (en) |
| BE (2) | BE780711R (en) |
| CA (1) | CA978860A (en) |
| DE (1) | DE2209424C3 (en) |
| FR (2) | FR2130305B2 (en) |
| GB (1) | GB1387874A (en) |
| NL (1) | NL7203169A (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5645358B2 (en) * | 1973-11-29 | 1981-10-26 | ||
| JPS5424841B2 (en) * | 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 (en) * | 1977-11-24 | 1983-06-10 | 株式会社日立製作所 | stationary induction equipment |
| US5046098A (en) * | 1985-03-07 | 1991-09-03 | Dolby Laboratories Licensing Corporation | Variable matrix decoder with three output channels |
| 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 |
| US7251337B2 (en) * | 2003-04-24 | 2007-07-31 | Dolby Laboratories Licensing Corporation | Volume control in movie theaters |
| EP2305240B1 (en) * | 2004-06-28 | 2014-12-03 | Ajinomoto Co., Inc. | Nutrient composition and composition for prevention/mitigation of digestive tract depression |
| JP4835298B2 (en) * | 2006-07-21 | 2011-12-14 | ソニー株式会社 | Audio signal processing apparatus, audio signal processing method and program |
| 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/en 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/en active
- 1972-03-15 BE BE780710A patent/BE780710R/en active
- 1972-03-15 FR FR7209093A patent/FR2130305B2/fr not_active Expired
- 1972-03-15 FR FR7209094A patent/FR2130306B2/fr not_active Expired
-
1975
- 1975-07-21 JP JP8911275A patent/JPS5316281B2/ja not_active Expired
Non-Patent Citations (1)
| Title |
|---|
| NEANT * |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5110962B2 (en) | 1976-04-08 |
| NL7203169A (en) | 1972-09-19 |
| JPS4849401A (en) | 1973-07-12 |
| FR2130306B2 (en) | 1977-12-23 |
| US3821471A (en) | 1974-06-28 |
| DE2209424C3 (en) | 1978-09-28 |
| JPS5136903A (en) | 1976-03-29 |
| FR2130305B2 (en) | 1979-04-27 |
| BE780710R (en) | 1972-09-15 |
| CA978860A (en) | 1975-12-02 |
| GB1387874A (en) | 1975-03-19 |
| DE2209424B2 (en) | 1978-01-26 |
| JPS5316281B2 (en) | 1978-05-31 |
| DE2209424A1 (en) | 1972-09-28 |
| FR2130306A2 (en) | 1972-11-03 |
| BE780711R (en) | 1972-09-15 |