FR2130306A2 - - Google Patents
Info
- Publication number
- FR2130306A2 FR2130306A2 FR7209094A FR7209094A FR2130306A2 FR 2130306 A2 FR2130306 A2 FR 2130306A2 FR 7209094 A FR7209094 A FR 7209094A FR 7209094 A FR7209094 A FR 7209094A FR 2130306 A2 FR2130306 A2 FR 2130306A2
- 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)
- 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)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Magnetic Bearings And Hydrostatic Bearings (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 |
|---|---|
| FR2130306A2 true FR2130306A2 (de) | 1972-11-03 |
| FR2130306B2 FR2130306B2 (de) | 1977-12-23 |
Family
ID=22412987
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7209093A Expired FR2130305B2 (de) | 1971-03-15 | 1972-03-15 | |
| FR7209094A Expired FR2130306B2 (de) | 1971-03-15 | 1972-03-15 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7209093A Expired FR2130305B2 (de) | 1971-03-15 | 1972-03-15 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3821471A (de) |
| JP (2) | JPS5110962B2 (de) |
| BE (2) | BE780710R (de) |
| CA (1) | CA978860A (de) |
| DE (1) | DE2209424C3 (de) |
| FR (2) | FR2130305B2 (de) |
| GB (1) | GB1387874A (de) |
| NL (1) | NL7203169A (de) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2578707A1 (fr) * | 1985-03-07 | 1986-09-12 | Dolby Lab Licensing Corp | Decodeur matriciel variable |
| US4941177A (en) * | 1985-03-07 | 1990-07-10 | 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 |
Families Citing this family (11)
| 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 |
| US7251337B2 (en) * | 2003-04-24 | 2007-07-31 | Dolby Laboratories Licensing Corporation | Volume control in movie theaters |
| KR101133944B1 (ko) * | 2004-06-28 | 2012-04-13 | 아지노모토 가부시키가이샤 | 영양 조성물 및 소화관 기능 저하 예방?개선용 조성물 |
| 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 FR FR7209093A patent/FR2130305B2/fr not_active Expired
- 1972-03-15 BE BE780710A patent/BE780710R/xx active
- 1972-03-15 BE BE780711A patent/BE780711R/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
Non-Patent Citations (5)
| Title |
|---|
| (REVUE DT"FUNKSCHAU",VOLUME 43,NO 21,1 NOVEMBRE 1971,PAGES 693-695 * |
| ARTICLE"QUADROFONIE VON DER * |
| ARTICLE"QUADROFONIE VON DER SCHALLPLATTE"DE HARDT.) * |
| REVUE DT"FUNKSCHAU",VOLUME 43,NO 21,1 NOVEMBRE 1971,PAGES 693-695 * |
| SCHALLPLATTE"DE HARDT.) * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2578707A1 (fr) * | 1985-03-07 | 1986-09-12 | Dolby Lab Licensing Corp | Decodeur matriciel variable |
| US4941177A (en) * | 1985-03-07 | 1990-07-10 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| GB1387874A (en) | 1975-03-19 |
| FR2130306B2 (de) | 1977-12-23 |
| BE780710R (fr) | 1972-09-15 |
| NL7203169A (de) | 1972-09-19 |
| JPS5136903A (de) | 1976-03-29 |
| JPS5110962B2 (de) | 1976-04-08 |
| DE2209424B2 (de) | 1978-01-26 |
| DE2209424C3 (de) | 1978-09-28 |
| JPS4849401A (de) | 1973-07-12 |
| US3821471A (en) | 1974-06-28 |
| FR2130305B2 (de) | 1979-04-27 |
| DE2209424A1 (de) | 1972-09-28 |
| JPS5316281B2 (de) | 1978-05-31 |
| FR2130305A2 (de) | 1972-11-03 |
| BE780711R (fr) | 1972-09-15 |
| CA978860A (en) | 1975-12-02 |