USB335741I5 - - Google Patents

Info

Publication number
USB335741I5
USB335741I5 US33574173A USB335741I5 US B335741 I5 USB335741 I5 US B335741I5 US 33574173 A US33574173 A US 33574173A US B335741 I5 USB335741 I5 US B335741I5
Authority
US
United States
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.)
Pending
Application number
Other languages
English (en)
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 filed Critical
Publication of USB335741I5 publication Critical patent/USB335741I5/en
Application granted granted Critical
Publication of US3925615A publication Critical patent/US3925615A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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)
US335741A 1972-02-25 1973-02-26 Multi-channel sound signal generating and reproducing circuits Expired - Lifetime US3925615A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP47018949A JPS4889702A (enrdf_load_stackoverflow) 1972-02-25 1972-02-25

Publications (2)

Publication Number Publication Date
USB335741I5 true USB335741I5 (enrdf_load_stackoverflow) 1975-01-28
US3925615A US3925615A (en) 1975-12-09

Family

ID=11985886

Family Applications (1)

Application Number Title Priority Date Filing Date
US335741A Expired - Lifetime US3925615A (en) 1972-02-25 1973-02-26 Multi-channel sound signal generating and reproducing circuits

Country Status (3)

Country Link
US (1) US3925615A (enrdf_load_stackoverflow)
JP (1) JPS4889702A (enrdf_load_stackoverflow)
DE (1) DE2309591C3 (enrdf_load_stackoverflow)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4159397A (en) * 1977-05-08 1979-06-26 Victor Company Of Japan, Limited Acoustic translation of quadraphonic signals for two- and four-speaker sound reproduction
US4567607A (en) * 1983-05-03 1986-01-28 Stereo Concepts, Inc. Stereo image recovery
US4748669A (en) * 1986-03-27 1988-05-31 Hughes Aircraft Company Stereo enhancement system
US5661808A (en) 1995-04-27 1997-08-26 Srs Labs, Inc. Stereo enhancement system
US5850453A (en) 1995-07-28 1998-12-15 Srs Labs, Inc. Acoustic correction apparatus
US5970152A (en) * 1996-04-30 1999-10-19 Srs Labs, Inc. Audio enhancement system for use in a surround sound environment
US5912976A (en) * 1996-11-07 1999-06-15 Srs Labs, Inc. Multi-channel audio enhancement system for use in recording and playback and methods for providing same
US6281749B1 (en) 1997-06-17 2001-08-28 Srs Labs, Inc. Sound enhancement system
US7031474B1 (en) 1999-10-04 2006-04-18 Srs Labs, Inc. Acoustic correction apparatus
US7277767B2 (en) 1999-12-10 2007-10-02 Srs Labs, Inc. System and method for enhanced streaming audio
US8050434B1 (en) 2006-12-21 2011-11-01 Srs Labs, Inc. Multi-channel audio enhancement system
EP2661907B8 (en) 2011-01-04 2019-08-14 DTS, Inc. Immersive audio rendering system
US9258664B2 (en) 2013-05-23 2016-02-09 Comhear, Inc. Headphone audio enhancement system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3632886A (en) * 1969-12-29 1972-01-04 Peter Scheiber Quadrasonic sound system
US3745252A (en) * 1971-02-03 1973-07-10 Columbia Broadcasting Syst Inc Matrixes and decoders for quadruphonic records
US3746792A (en) * 1968-01-11 1973-07-17 P Scheiber Multidirectional sound system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1359509A (en) * 1970-06-15 1974-07-10 Scheiber P Decoder apparatus for use in a multidirectional sound system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3746792A (en) * 1968-01-11 1973-07-17 P Scheiber Multidirectional sound system
US3632886A (en) * 1969-12-29 1972-01-04 Peter Scheiber Quadrasonic sound system
US3745252A (en) * 1971-02-03 1973-07-10 Columbia Broadcasting Syst Inc Matrixes and decoders for quadruphonic records

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
Analysing Phase - Amplitude Matrices, by Scheiber, AES Preprint, Oct. 1971. *
Discrete-Matrix Multichannel Stereo, by Cooper & Shiga, Journal AES, June 1972, presented 10/7/71. *
Multichannel Stereo Matrix Systems: An Overview by Eargle Journal AES, July/August 1971. *

Also Published As

Publication number Publication date
DE2309591B2 (de) 1976-11-11
DE2309591A1 (de) 1973-09-13
US3925615A (en) 1975-12-09
JPS4889702A (enrdf_load_stackoverflow) 1973-11-22
DE2309591C3 (de) 1977-06-16

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