GB1397900A - Encoding method for converting multichannel sound signals into 2-channel composite signals - Google Patents

Encoding method for converting multichannel sound signals into 2-channel composite signals

Info

Publication number
GB1397900A
GB1397900A GB5986873A GB5986873A GB1397900A GB 1397900 A GB1397900 A GB 1397900A GB 5986873 A GB5986873 A GB 5986873A GB 5986873 A GB5986873 A GB 5986873A GB 1397900 A GB1397900 A GB 1397900A
Authority
GB
United Kingdom
Prior art keywords
signals
phase
components
separation
degrees
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
GB5986873A
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 GB1397900A publication Critical patent/GB1397900A/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 Analysis (AREA)
  • Algebra (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Stereophonic System (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
GB5986873A 1973-09-18 1973-12-27 Encoding method for converting multichannel sound signals into 2-channel composite signals Expired GB1397900A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP48105172A JPS5248002B2 (enrdf_load_stackoverflow) 1973-09-18 1973-09-18

Publications (1)

Publication Number Publication Date
GB1397900A true GB1397900A (en) 1975-06-18

Family

ID=14400249

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5986873A Expired GB1397900A (en) 1973-09-18 1973-12-27 Encoding method for converting multichannel sound signals into 2-channel composite signals

Country Status (4)

Country Link
US (1) US3872249A (enrdf_load_stackoverflow)
JP (1) JPS5248002B2 (enrdf_load_stackoverflow)
DE (1) DE2364997C3 (enrdf_load_stackoverflow)
GB (1) GB1397900A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6236730B1 (en) * 1997-05-19 2001-05-22 Qsound Labs, Inc. Full sound enhancement using multi-input sound signals

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
GB1402320A (en) * 1971-10-25 1975-08-06 Sansui Electric Co Decoder for use in 4-2-4 matrix playback system

Also Published As

Publication number Publication date
JPS5057201A (enrdf_load_stackoverflow) 1975-05-19
JPS5248002B2 (enrdf_load_stackoverflow) 1977-12-07
DE2364997B2 (de) 1980-07-03
US3872249A (en) 1975-03-18
DE2364997A1 (de) 1975-04-10
DE2364997C3 (de) 1981-05-27

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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