GB1422832A - Encoding system for forming 2-channel signals from a plurality of sound signals - Google Patents

Encoding system for forming 2-channel signals from a plurality of sound signals

Info

Publication number
GB1422832A
GB1422832A GB5164073A GB5164073A GB1422832A GB 1422832 A GB1422832 A GB 1422832A GB 5164073 A GB5164073 A GB 5164073A GB 5164073 A GB5164073 A GB 5164073A GB 1422832 A GB1422832 A GB 1422832A
Authority
GB
United Kingdom
Prior art keywords
signals
phase
proportions
channels
quadrature
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
Application number
GB5164073A
Other languages
English (en)
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.)
Sansui Electric Co Ltd
Original Assignee
Sansui Electric Co Ltd
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 Sansui Electric Co Ltd filed Critical Sansui Electric Co Ltd
Publication of GB1422832A publication Critical patent/GB1422832A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/86—Arrangements characterised by the broadcast information itself
    • H04H20/88—Stereophonic broadcast systems
    • H04H20/89—Stereophonic broadcast systems using three or more audio channels, e.g. triphonic or quadraphonic
    • 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

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Mathematical Physics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • General Physics & Mathematics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Algebra (AREA)
  • Multimedia (AREA)
  • Stereophonic System (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
GB5164073A 1972-12-29 1973-11-07 Encoding system for forming 2-channel signals from a plurality of sound signals Expired GB1422832A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP732774A JPS5246681B2 (enrdf_load_stackoverflow) 1972-12-29 1972-12-29

Publications (1)

Publication Number Publication Date
GB1422832A true GB1422832A (en) 1976-01-28

Family

ID=11538671

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5164073A Expired GB1422832A (en) 1972-12-29 1973-11-07 Encoding system for forming 2-channel signals from a plurality of sound signals

Country Status (4)

Country Link
US (1) US3845245A (enrdf_load_stackoverflow)
JP (1) JPS5246681B2 (enrdf_load_stackoverflow)
DE (1) DE2355888C3 (enrdf_load_stackoverflow)
GB (1) GB1422832A (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56143131U (enrdf_load_stackoverflow) * 1980-03-28 1981-10-28
US4577305A (en) * 1983-03-14 1986-03-18 Dolby Laboratories Licensing Corporation Stereophonic motion picture photographic sound-tracks compatible with different sound projection formats and record and playback apparatus therefore
JP2580117B2 (ja) * 1985-12-18 1997-02-12 ソニー株式会社 再生装置における音場拡大装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3745252A (en) * 1971-02-03 1973-07-10 Columbia Broadcasting Syst Inc Matrixes and decoders for quadruphonic records
US3787622A (en) * 1971-02-05 1974-01-22 Sansui Electric Co Quadrasonic sound system for two channel transmission
JPS4944884B1 (enrdf_load_stackoverflow) * 1971-07-02 1974-11-30

Also Published As

Publication number Publication date
US3845245A (en) 1974-10-29
DE2355888C3 (de) 1975-10-23
DE2355888A1 (de) 1974-07-11
JPS4991401A (enrdf_load_stackoverflow) 1974-08-31
JPS5246681B2 (enrdf_load_stackoverflow) 1977-11-26
DE2355888B2 (de) 1975-03-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee