FR2186787B1 - - Google Patents
Info
- Publication number
- FR2186787B1 FR2186787B1 FR7319893A FR7319893A FR2186787B1 FR 2186787 B1 FR2186787 B1 FR 2186787B1 FR 7319893 A FR7319893 A FR 7319893A FR 7319893 A FR7319893 A FR 7319893A FR 2186787 B1 FR2186787 B1 FR 2186787B1
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
- H04S3/006—Systems employing more than two channels, e.g. quadraphonic in which a plurality of audio signals are transformed in a combination of audio signals and modulated signals, e.g. CD-4 systems
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Algebra (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Mathematical Physics (AREA)
- Pure & Applied Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Multimedia (AREA)
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP47053622A JPS4911102A (ja) | 1972-05-30 | 1972-05-30 | |
JP47057231A JPS5228562B2 (ja) | 1972-06-08 | 1972-06-08 | |
JP5723272A JPS535802B2 (ja) | 1972-06-08 | 1972-06-08 | |
JP47057230A JPS5228561B2 (ja) | 1972-06-08 | 1972-06-08 | |
JP47059844A JPS4921102A (ja) | 1972-06-15 | 1972-06-15 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2186787A1 FR2186787A1 (ja) | 1974-01-11 |
FR2186787B1 true FR2186787B1 (ja) | 1977-01-07 |
Family
ID=27523100
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7319893A Expired FR2186787B1 (ja) | 1972-05-30 | 1973-05-30 |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2186787B1 (ja) |
-
1973
- 1973-05-30 FR FR7319893A patent/FR2186787B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2186787A1 (ja) | 1974-01-11 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |