CA997277A - Signal matrixing for directional reproduction of sound - Google Patents

Signal matrixing for directional reproduction of sound

Info

Publication number
CA997277A
CA997277A CA153,095A CA153095A CA997277A CA 997277 A CA997277 A CA 997277A CA 153095 A CA153095 A CA 153095A CA 997277 A CA997277 A CA 997277A
Authority
CA
Canada
Prior art keywords
sound
directional reproduction
matrixing
signal matrixing
signal
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
CA153,095A
Other versions
CA153095S (en
Inventor
Duane H. Cooper
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.)
Individual
Original Assignee
Individual
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
Priority claimed from US00187065A external-priority patent/US3856992A/en
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of CA997277A publication Critical patent/CA997277A/en
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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (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)
  • Stereophonic System (AREA)
  • Stereo-Broadcasting Methods (AREA)
CA153,095A 1971-10-06 1972-10-03 Signal matrixing for directional reproduction of sound Expired CA997277A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US00187065A US3856992A (en) 1971-10-06 1971-10-06 Multidirectional sound reproduction
US288873A US3906156A (en) 1971-10-06 1972-09-13 Signal matrixing for directional reproduction of sound

Publications (1)

Publication Number Publication Date
CA997277A true CA997277A (en) 1976-09-21

Family

ID=26882689

Family Applications (1)

Application Number Title Priority Date Filing Date
CA153,095A Expired CA997277A (en) 1971-10-06 1972-10-03 Signal matrixing for directional reproduction of sound

Country Status (5)

Country Link
US (1) US3906156A (en)
CA (1) CA997277A (en)
DE (1) DE2249039C2 (en)
FR (1) FR2156168B1 (en)
GB (1) GB1411994A (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5247884B2 (en) * 1973-05-10 1977-12-06
US4085291A (en) * 1971-10-06 1978-04-18 Cooper Duane H Synthetic supplementary channel matrix decoding systems
JPS5521519B2 (en) * 1973-05-10 1980-06-10
DE2422471C2 (en) * 1973-05-10 1982-11-25 Cooper, Duane H., Dr., Champagne, Ill. Arrangement for the transmission of multi-channel signals
GB1494751A (en) * 1974-03-26 1977-12-14 Nat Res Dev Sound reproduction systems
JPS5230402A (en) * 1975-09-04 1977-03-08 Victor Co Of Japan Ltd Multichannel stereo system
US4095049A (en) * 1976-03-15 1978-06-13 National Research Development Corporation Non-rotationally-symmetric surround-sound encoding system
GB1548674A (en) * 1976-07-01 1979-07-18 Nat Res Dev Sound reproduction systems
US5930370A (en) * 1995-09-07 1999-07-27 Rep Investment Limited Liability In-home theater surround sound speaker system
US5708719A (en) * 1995-09-07 1998-01-13 Rep Investment Limited Liability Company In-home theater surround sound speaker system
US6118876A (en) * 1995-09-07 2000-09-12 Rep Investment Limited Liability Company Surround sound speaker system for improved spatial effects
US6603977B1 (en) * 2000-02-04 2003-08-05 Sbc Properties, Lp Location information system for a wireless communication device and method therefor
US8320584B2 (en) * 2008-12-10 2012-11-27 Sheets Laurence L Method and system for performing audio signal processing
US8259960B2 (en) * 2009-09-11 2012-09-04 BSG Laboratory, LLC Phase layering apparatus and method for a complete audio signal
CN106067996B (en) * 2015-04-24 2019-09-17 松下知识产权经营株式会社 Voice reproduction method, voice dialogue device

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA938560A (en) * 1969-11-28 1973-12-18 Victor Company Of Japan System for recording and/or reproducing four channel signals on a record disc
US3708623A (en) * 1970-04-29 1973-01-02 Quadracast Syst Inc Compatible four channel fm system
GB1359509A (en) 1970-06-15 1974-07-10 Scheiber P Decoder apparatus for use in a multidirectional sound system
JPS5033724B1 (en) * 1970-11-09 1975-11-01
GB1369813A (en) 1971-02-02 1974-10-09 Nat Res Dev Reproduction of sound
US3745252A (en) 1971-02-03 1973-07-10 Columbia Broadcasting Syst Inc Matrixes and decoders for quadruphonic records
US3679832A (en) * 1971-03-23 1972-07-25 Bell Telephone Labor Inc Three-channel fm stereo transmission
US3761628A (en) * 1972-04-13 1973-09-25 Columbia Broadcasting Syst Inc Stereo-quadraphonic matrix system with matrix or discrete sound reproduction capability

Also Published As

Publication number Publication date
GB1411994A (en) 1975-10-29
FR2156168A1 (en) 1973-05-25
DE2249039C2 (en) 1986-07-17
US3906156A (en) 1975-09-16
FR2156168B1 (en) 1980-04-18
DE2249039A1 (en) 1973-04-12

Similar Documents

Publication Publication Date Title
CA958648A (en) Time compression of audio signals
CA1011656A (en) Stereophonic sound reproducing apparatus
CA982057A (en) Stereophonic signal reproducing apparatus
ZA725451B (en) Controlled delay line signal processor for sound reproduction
CA997277A (en) Signal matrixing for directional reproduction of sound
CA973806A (en) Apparatus for reproducing quadraphonic sound
CA977687A (en) Reproduction of sound
CA985180A (en) Sound reproduction system
CA965014A (en) Controlled delay line signal processor for sound reproduction
AU460098B2 (en) Improved decoder for quadruphonic sound
CA1006828A (en) Signal matrixing for directional reproduction of sound
CA1006831A (en) Signal matrixing for directional reproduction of sound
CA1006829A (en) Signal matrixing for directional reproduction of sound
CA1006832A (en) Signal matrixing for directional reproduction of sound
CA1006824A (en) Signal matrixing for directional reproduction of sound
CA1006830A (en) Signal matrixing for directional reproduction of sound
AU438630B2 (en) Audio amplifier
CA972796A (en) Sound reproduction system
CA976485A (en) Apparatus for reproducing quadruphonic sound
CA872374A (en) Stereo sound reproduction system
AU477383B2 (en) Controlled delay line signal processor for sound reproduction
CA975685A (en) Apparatus for reproducing quadraphonic sound
CA982948A (en) Decoder for quadraphonic sound
AU457441B2 (en) Stereophonic reproducing system
CA874561A (en) Sound reproduction system and loudspeaker assembly