CA974457A - Quadruphonic reproducing system - Google Patents
Quadruphonic reproducing systemInfo
- Publication number
- CA974457A CA974457A CA119,392A CA119392A CA974457A CA 974457 A CA974457 A CA 974457A CA 119392 A CA119392 A CA 119392A CA 974457 A CA974457 A CA 974457A
- Authority
- CA
- Canada
- Prior art keywords
- quadruphonic
- reproducing system
- reproducing
- quadruphonic reproducing
- Prior art date
- 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 (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US8185870A | 1970-10-19 | 1970-10-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA974457A true CA974457A (en) | 1975-09-16 |
Family
ID=22166858
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA119,392A Expired CA974457A (en) | 1970-10-19 | 1971-07-29 | Quadruphonic reproducing system |
Country Status (6)
Country | Link |
---|---|
BE (1) | BE772298A (fr) |
CA (1) | CA974457A (fr) |
FR (1) | FR2109754A5 (fr) |
GB (1) | GB1360411A (fr) |
IL (1) | IL37872A (fr) |
NL (1) | NL7108370A (fr) |
-
1971
- 1971-06-17 NL NL7108370A patent/NL7108370A/xx unknown
- 1971-07-29 CA CA119,392A patent/CA974457A/en not_active Expired
- 1971-09-06 GB GB4151271A patent/GB1360411A/en not_active Expired
- 1971-09-07 BE BE772298A patent/BE772298A/fr unknown
- 1971-09-08 FR FR7132479A patent/FR2109754A5/fr not_active Expired
- 1971-10-07 IL IL37872A patent/IL37872A/en unknown
Also Published As
Publication number | Publication date |
---|---|
DE2139098B2 (de) | 1976-11-25 |
GB1360411A (en) | 1974-07-17 |
FR2109754A5 (fr) | 1972-05-26 |
BE772298A (fr) | 1972-03-17 |
AU3214771A (en) | 1973-02-15 |
NL7108370A (fr) | 1972-04-21 |
DE2139098A1 (de) | 1972-04-20 |
IL37872A (en) | 1973-11-28 |
IL37872A0 (en) | 1971-12-29 |
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