FR2143223B1 - - Google Patents

Info

Publication number
FR2143223B1
FR2143223B1 FR7222416A FR7222416A FR2143223B1 FR 2143223 B1 FR2143223 B1 FR 2143223B1 FR 7222416 A FR7222416 A FR 7222416A FR 7222416 A FR7222416 A FR 7222416A FR 2143223 B1 FR2143223 B1 FR 2143223B1
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
Application number
FR7222416A
Other languages
French (fr)
Other versions
FR2143223A1 (enrdf_load_stackoverflow
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Publication of FR2143223A1 publication Critical patent/FR2143223A1/fr
Application granted granted Critical
Publication of FR2143223B1 publication Critical patent/FR2143223B1/fr
Expired legal-status Critical Current

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)
  • Stereo-Broadcasting Methods (AREA)
FR7222416A 1971-06-21 1972-06-21 Expired FR2143223B1 (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP46044622A JPS5147321B1 (enrdf_load_stackoverflow) 1971-06-21 1971-06-21

Publications (2)

Publication Number Publication Date
FR2143223A1 FR2143223A1 (enrdf_load_stackoverflow) 1973-02-02
FR2143223B1 true FR2143223B1 (enrdf_load_stackoverflow) 1977-12-23

Family

ID=12696520

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7222416A Expired FR2143223B1 (enrdf_load_stackoverflow) 1971-06-21 1972-06-21

Country Status (8)

Country Link
US (1) US3821474A (enrdf_load_stackoverflow)
JP (1) JPS5147321B1 (enrdf_load_stackoverflow)
CA (1) CA976485A (enrdf_load_stackoverflow)
DE (1) DE2230162A1 (enrdf_load_stackoverflow)
FR (1) FR2143223B1 (enrdf_load_stackoverflow)
GB (1) GB1384610A (enrdf_load_stackoverflow)
IT (1) IT956758B (enrdf_load_stackoverflow)
NL (1) NL7208328A (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
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
EP2856645A2 (en) 2012-05-31 2015-04-08 Dolby Laboratories Licensing Corporation Low latency and low complexity phase shift network

Also Published As

Publication number Publication date
GB1384610A (en) 1975-02-19
US3821474A (en) 1974-06-28
IT956758B (it) 1973-10-10
CA976485A (en) 1975-10-21
FR2143223A1 (enrdf_load_stackoverflow) 1973-02-02
DE2230162A1 (de) 1973-04-26
JPS5147321B1 (enrdf_load_stackoverflow) 1976-12-14
NL7208328A (enrdf_load_stackoverflow) 1972-12-27

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Legal Events

Date Code Title Description
ST Notification of lapse