FR2229183B1 - - Google Patents
Info
- Publication number
- FR2229183B1 FR2229183B1 FR7416250A FR7416250A FR2229183B1 FR 2229183 B1 FR2229183 B1 FR 2229183B1 FR 7416250 A FR7416250 A FR 7416250A FR 7416250 A FR7416250 A FR 7416250A FR 2229183 B1 FR2229183 B1 FR 2229183B1
- 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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00992—Circuits for stereophonic or quadraphonic recording or reproducing
-
- 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)
- Signal Processing (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Stereophonic System (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP48052076A JPS5247884B2 (fr) | 1973-05-10 | 1973-05-10 | |
JP5207573A JPS5521519B2 (fr) | 1973-05-10 | 1973-05-10 | |
JP5207773A JPS5527760B2 (fr) | 1973-05-10 | 1973-05-10 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2229183A1 FR2229183A1 (fr) | 1974-12-06 |
FR2229183B1 true FR2229183B1 (fr) | 1983-08-12 |
Family
ID=27294535
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7416250A Expired FR2229183B1 (fr) | 1973-05-10 | 1974-05-10 |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE2422471C2 (fr) |
FR (1) | FR2229183B1 (fr) |
NL (1) | NL185876C (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4002840A (en) * | 1974-06-25 | 1977-01-11 | Matsushita Electric Industrial Co., Ltd. | Angle-modulated signal transmission system |
Family Cites Families (1)
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 |
-
1974
- 1974-05-09 NL NL7406289A patent/NL185876C/xx not_active IP Right Cessation
- 1974-05-09 DE DE19742422471 patent/DE2422471C2/de not_active Expired
- 1974-05-10 FR FR7416250A patent/FR2229183B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2229183A1 (fr) | 1974-12-06 |
DE2422471C2 (de) | 1982-11-25 |
DE2422471A1 (de) | 1974-11-28 |
NL7406289A (fr) | 1974-11-12 |
NL185876B (nl) | 1990-03-01 |
NL185876C (nl) | 1990-08-01 |