FR2345047B1 - - Google Patents
Info
- Publication number
- FR2345047B1 FR2345047B1 FR7707488A FR7707488A FR2345047B1 FR 2345047 B1 FR2345047 B1 FR 2345047B1 FR 7707488 A FR7707488 A FR 7707488A FR 7707488 A FR7707488 A FR 7707488A FR 2345047 B1 FR2345047 B1 FR 2345047B1
- 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.)
- Expired
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)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1019176A GB1550628A (en) | 1976-03-15 | 1976-03-15 | Sound reproduction systems |
| GB268677 | 1977-01-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2345047A1 FR2345047A1 (fr) | 1977-10-14 |
| FR2345047B1 true FR2345047B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1984-04-27 |
Family
ID=26237664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7707488A Granted FR2345047A1 (fr) | 1976-03-15 | 1977-03-14 | Systemes de reproduction des sons |
Country Status (8)
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2073556B (en) * | 1980-02-23 | 1984-02-22 | Nat Res Dev | Sound reproduction systems |
| US4392019A (en) * | 1980-12-19 | 1983-07-05 | Independent Broadcasting Authority | Surround sound system |
| CA1268546C (en) * | 1985-08-30 | 1990-05-01 | STEREO VOICE SIGNAL TRANSMISSION SYSTEM | |
| US5708719A (en) * | 1995-09-07 | 1998-01-13 | Rep Investment Limited Liability Company | In-home theater surround sound speaker system |
| US6118876A (en) * | 1995-09-07 | 2000-09-12 | Rep Investment Limited Liability Company | Surround sound speaker system for improved spatial effects |
| US5930370A (en) * | 1995-09-07 | 1999-07-27 | Rep Investment Limited Liability | In-home theater surround sound speaker system |
| MXPA06011397A (es) * | 2004-04-05 | 2006-12-20 | Koninkl Philips Electronics Nv | Metodo, dispositivo, aparato codificador, aparato decodificador y sistema de audio. |
| WO2005117483A1 (en) * | 2004-05-25 | 2005-12-08 | Huonlabs Pty Ltd | Audio apparatus and method |
| WO2008039339A2 (en) * | 2006-09-25 | 2008-04-03 | Dolby Laboratories Licensing Corporation | Improved spatial resolution of the sound field for multi-channel audio playback systems by deriving signals with high order angular terms |
| KR101890229B1 (ko) * | 2010-03-26 | 2018-08-21 | 돌비 인터네셔널 에이비 | 오디오 재생을 위한 오디오 사운드필드 표현을 디코딩하는 방법 및 장치 |
| US9338552B2 (en) | 2014-05-09 | 2016-05-10 | Trifield Ip, Llc | Coinciding low and high frequency localization panning |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1369813A (en) * | 1971-02-02 | 1974-10-09 | Nat Res Dev | Reproduction of sound |
| US3679832A (en) * | 1971-03-23 | 1972-07-25 | Bell Telephone Labor Inc | Three-channel fm stereo transmission |
| US3906156A (en) * | 1971-10-06 | 1975-09-16 | Duane H Cooper | Signal matrixing for directional reproduction of sound |
| US3856992A (en) * | 1971-10-06 | 1974-12-24 | D Cooper | Multidirectional sound reproduction |
| US3814858A (en) * | 1972-04-27 | 1974-06-04 | Motorola Inc | Multiplex system employing multiple quadrature subcarriers |
| US3824342A (en) * | 1972-05-09 | 1974-07-16 | Rca Corp | Omnidirectional sound field reproducing system |
| GB1414166A (en) * | 1972-07-28 | 1975-11-19 | British Broadcasting Corp | Quadraphonic sound transmission or recording system |
| DE2305868A1 (de) * | 1973-02-07 | 1974-08-08 | Inst Rundfunktechnik Gmbh | Verfahren zur uebertragung quadrophoner signale ueber ukw-rundfunk |
| GB1494751A (en) * | 1974-03-26 | 1977-12-14 | Nat Res Dev | Sound reproduction systems |
-
1977
- 1977-03-11 US US05/776,916 patent/US4095049A/en not_active Expired - Lifetime
- 1977-03-14 FR FR7707488A patent/FR2345047A1/fr active Granted
- 1977-03-14 CH CH313977A patent/CH633400A5/fr not_active IP Right Cessation
- 1977-03-14 DK DK109277A patent/DK109277A/da not_active Application Discontinuation
- 1977-03-15 JP JP2912677A patent/JPS52134701A/ja active Granted
- 1977-03-15 NL NL7702790A patent/NL7702790A/xx not_active Application Discontinuation
- 1977-03-15 DE DE19772711299 patent/DE2711299A1/de active Granted
- 1977-03-15 CA CA274,025A patent/CA1061721A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2711299C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1988-09-15 |
| DE2711299A1 (de) | 1977-09-22 |
| CA1061721A (en) | 1979-09-04 |
| DK109277A (da) | 1977-09-16 |
| FR2345047A1 (fr) | 1977-10-14 |
| US4095049A (en) | 1978-06-13 |
| NL7702790A (nl) | 1977-09-19 |
| JPS52134701A (en) | 1977-11-11 |
| JPH0520960B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1993-03-22 |
| CH633400A5 (fr) | 1982-11-30 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| TP | Transmission of property | ||
| ST | Notification of lapse |