IT956758B - Apparecchiatura per la riprodu zione di suono quadrifonic - Google Patents
Apparecchiatura per la riprodu zione di suono quadrifonicInfo
- Publication number
- IT956758B IT956758B IT26003/72A IT2600372A IT956758B IT 956758 B IT956758 B IT 956758B IT 26003/72 A IT26003/72 A IT 26003/72A IT 2600372 A IT2600372 A IT 2600372A IT 956758 B IT956758 B IT 956758B
- Authority
- IT
- Italy
- Prior art keywords
- quadrifonic
- sound reproduction
- reproduction equipment
- equipment
- sound
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMSÂ
- 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
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP46044622A JPS5147321B1 (it) | 1971-06-21 | 1971-06-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
IT956758B true IT956758B (it) | 1973-10-10 |
Family
ID=12696520
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT26003/72A IT956758B (it) | 1971-06-21 | 1972-06-21 | Apparecchiatura per la riprodu zione di suono quadrifonic |
Country Status (8)
Country | Link |
---|---|
US (1) | US3821474A (it) |
JP (1) | JPS5147321B1 (it) |
CA (1) | CA976485A (it) |
DE (1) | DE2230162A1 (it) |
FR (1) | FR2143223B1 (it) |
GB (1) | GB1384610A (it) |
IT (1) | IT956758B (it) |
NL (1) | NL7208328A (it) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3967063A (en) * | 1971-06-23 | 1976-06-29 | Cbs Inc. | Logic for matrix systems for reproducing quadraphonic sound |
DE2445123C3 (de) * | 1973-09-26 | 1980-03-06 | Hitachi, Ltd. | Analogsignal-Verarbeitungsschaltung |
DK152478C (da) * | 1985-12-06 | 1988-07-25 | Ole Sparkjaer | Fremgangsmaade og kredsloeb til dekodning af fire kanalsignaler, som er matrixkodet og foreligger i form af et to-kanal signal |
WO2013180945A2 (en) | 2012-05-31 | 2013-12-05 | Dolby Laboratories Licensing Corporation | Low latency and low complexity phase shift network |
-
1971
- 1971-06-21 JP JP46044622A patent/JPS5147321B1/ja active Pending
-
1972
- 1972-06-15 GB GB2811172A patent/GB1384610A/en not_active Expired
- 1972-06-19 CA CA145,057A patent/CA976485A/en not_active Expired
- 1972-06-19 NL NL7208328A patent/NL7208328A/xx not_active Application Discontinuation
- 1972-06-19 US US00264030A patent/US3821474A/en not_active Expired - Lifetime
- 1972-06-21 DE DE2230162A patent/DE2230162A1/de active Pending
- 1972-06-21 IT IT26003/72A patent/IT956758B/it active
- 1972-06-21 FR FR7222416A patent/FR2143223B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5147321B1 (it) | 1976-12-14 |
NL7208328A (it) | 1972-12-27 |
FR2143223A1 (it) | 1973-02-02 |
GB1384610A (en) | 1975-02-19 |
US3821474A (en) | 1974-06-28 |
CA976485A (en) | 1975-10-21 |
FR2143223B1 (it) | 1977-12-23 |
DE2230162A1 (de) | 1973-04-26 |
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