NL174317B - Decodeerschakeling en codeerschakeling voor een geluidsreproduktiestelsel met meerdere kanalen. - Google Patents
Decodeerschakeling en codeerschakeling voor een geluidsreproduktiestelsel met meerdere kanalen.Info
- Publication number
- NL174317B NL174317B NLAANVRAGE7201072,A NL7201072A NL174317B NL 174317 B NL174317 B NL 174317B NL 7201072 A NL7201072 A NL 7201072A NL 174317 B NL174317 B NL 174317B
- Authority
- NL
- Netherlands
- Prior art keywords
- decoding
- sound reproduction
- reproduction system
- coding circuit
- channel sound
- Prior art date
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)
- Circuit For Audible Band Transducer (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB369871A GB1369813A (en) | 1971-02-02 | 1971-02-02 | Reproduction of sound |
GB5200871 | 1971-11-09 |
Publications (3)
Publication Number | Publication Date |
---|---|
NL7201072A NL7201072A (nl) | 1972-08-04 |
NL174317B true NL174317B (nl) | 1983-12-16 |
NL174317C NL174317C (nl) | 1984-05-16 |
Family
ID=26238524
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NLAANVRAGE7201072,A NL174317C (nl) | 1971-02-02 | 1972-01-26 | Decodeerschakeling en codeerschakeling voor een geluidsreproduktiestelsel met meerdere kanalen. |
Country Status (9)
Country | Link |
---|---|
US (1) | US4251685A (nl) |
JP (1) | JPS558880B1 (nl) |
CA (1) | CA977687A (nl) |
CH (1) | CH580376A5 (nl) |
DE (1) | DE2204668C2 (nl) |
FR (1) | FR2125002A5 (nl) |
GB (1) | GB1369813A (nl) |
IT (1) | IT948919B (nl) |
NL (1) | NL174317C (nl) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3906156A (en) | 1971-10-06 | 1975-09-16 | Duane H Cooper | Signal matrixing for directional reproduction of sound |
GB1494751A (en) * | 1974-03-26 | 1977-12-14 | Nat Res Dev | Sound reproduction systems |
GB1512514A (en) * | 1974-07-12 | 1978-06-01 | Nat Res Dev | Microphone assemblies |
GB1550627A (en) * | 1975-11-13 | 1979-08-15 | Nat Res Dev | Sound reproduction systems |
US4095049A (en) * | 1976-03-15 | 1978-06-13 | National Research Development Corporation | Non-rotationally-symmetric surround-sound encoding system |
GB2073556B (en) * | 1980-02-23 | 1984-02-22 | Nat Res Dev | Sound reproduction systems |
GB8402682D0 (en) * | 1984-02-01 | 1984-03-07 | Audim Sa | Stereophonic sound system |
CA1268546A (en) * | 1985-08-30 | 1990-05-01 | Shigenobu Minami | Stereophonic voice signal transmission system |
US5043970A (en) * | 1988-01-06 | 1991-08-27 | Lucasarts Entertainment Company | Sound system with source material and surround timbre response correction, specified front and surround loudspeaker directionality, and multi-loudspeaker surround |
US5222059A (en) * | 1988-01-06 | 1993-06-22 | Lucasfilm Ltd. | Surround-sound system with motion picture soundtrack timbre correction, surround sound channel timbre correction, defined loudspeaker directionality, and reduced comb-filter effects |
US7382888B2 (en) * | 2000-12-12 | 2008-06-03 | Bose Corporation | Phase shifting audio signal combining |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3069505A (en) * | 1961-07-12 | 1962-12-18 | Philco Corp | Multiplex stereophonic transmitting and receiving system |
US3813494A (en) * | 1970-06-08 | 1974-05-28 | Columbia Broadcasting Syst Inc | Quadraphonic reproducing system |
US3856992A (en) * | 1971-10-06 | 1974-12-24 | D Cooper | Multidirectional sound reproduction |
-
1971
- 1971-02-02 GB GB369871A patent/GB1369813A/en not_active Expired
-
1972
- 1972-01-24 IT IT67200/72A patent/IT948919B/it active
- 1972-01-26 NL NLAANVRAGE7201072,A patent/NL174317C/nl not_active IP Right Cessation
- 1972-02-01 DE DE2204668A patent/DE2204668C2/de not_active Expired
- 1972-02-01 CA CA133,650A patent/CA977687A/en not_active Expired
- 1972-02-01 CH CH142772A patent/CH580376A5/xx not_active IP Right Cessation
- 1972-02-01 FR FR7203304A patent/FR2125002A5/fr not_active Expired
- 1972-02-02 JP JP1214172A patent/JPS558880B1/ja active Pending
-
1974
- 1974-01-03 US US05/430,519 patent/US4251685A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
NL174317C (nl) | 1984-05-16 |
JPS558880B1 (nl) | 1980-03-06 |
CA977687A (en) | 1975-11-11 |
IT948919B (it) | 1973-06-11 |
US4251685A (en) | 1981-02-17 |
NL7201072A (nl) | 1972-08-04 |
GB1369813A (en) | 1974-10-09 |
DE2204668A1 (de) | 1972-08-10 |
CH580376A5 (nl) | 1976-09-30 |
FR2125002A5 (nl) | 1972-09-22 |
DE2204668C2 (de) | 1984-03-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
V1 | Lapsed because of non-payment of the annual fee |