CH617303A5 - - Google Patents

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Publication number
CH617303A5
CH617303A5 CH383175A CH383175A CH617303A5 CH 617303 A5 CH617303 A5 CH 617303A5 CH 383175 A CH383175 A CH 383175A CH 383175 A CH383175 A CH 383175A CH 617303 A5 CH617303 A5 CH 617303A5
Authority
CH
Switzerland
Prior art keywords
signal
signals
difference
input
pair
Prior art date
Application number
CH383175A
Other languages
English (en)
French (fr)
Inventor
Michael Anthony Gerzon
Original Assignee
Nat Res Dev
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 Nat Res Dev filed Critical Nat Res Dev
Publication of CH617303A5 publication Critical patent/CH617303A5/fr

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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
    • H04S2420/11—Application of ambisonics in stereophonic audio systems

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)
  • Circuit For Audible Band Transducer (AREA)
  • Stereo-Broadcasting Methods (AREA)
CH383175A 1974-03-26 1975-03-25 CH617303A5 (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB13292/74A GB1494751A (en) 1974-03-26 1974-03-26 Sound reproduction systems

Publications (1)

Publication Number Publication Date
CH617303A5 true CH617303A5 (it) 1980-05-14

Family

ID=10020311

Family Applications (2)

Application Number Title Priority Date Filing Date
CH383175A CH617303A5 (it) 1974-03-26 1975-03-25
CH589977A CH625660A5 (it) 1974-03-26 1977-05-11

Family Applications After (1)

Application Number Title Priority Date Filing Date
CH589977A CH625660A5 (it) 1974-03-26 1977-05-11

Country Status (10)

Country Link
US (1) US3997725A (it)
JP (2) JPS5943880B2 (it)
CA (1) CA1020095A (it)
CH (2) CH617303A5 (it)
DE (1) DE2512287A1 (it)
DK (1) DK120075A (it)
FR (1) FR2266411B1 (it)
GB (1) GB1494751A (it)
IT (1) IT1034536B (it)
NL (1) NL181068C (it)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4085291A (en) * 1971-10-06 1978-04-18 Cooper Duane H Synthetic supplementary channel matrix decoding systems
US4086433A (en) * 1974-03-26 1978-04-25 National Research Development Corporation Sound reproduction system with non-square loudspeaker lay-out
GB1512514A (en) * 1974-07-12 1978-06-01 Nat Res Dev Microphone assemblies
GB1550627A (en) * 1975-11-13 1979-08-15 Nat Res Dev Sound reproduction systems
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
GB2073556B (en) * 1980-02-23 1984-02-22 Nat Res Dev Sound reproduction systems
DE3734084A1 (de) * 1987-10-08 1989-04-27 Inst Rundfunktechnik Gmbh Verfahren zum wiedergeben mehrkanaliger tonsignale
JPH05191899A (ja) * 1992-01-16 1993-07-30 Pioneer Electron Corp ステレオサラウンド装置
US5757927A (en) * 1992-03-02 1998-05-26 Trifield Productions Ltd. Surround sound apparatus
US5754663A (en) * 1995-03-30 1998-05-19 Bsg Laboratories Four dimensional acoustical audio system for a homogeneous sound field
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
US5677957A (en) * 1995-11-13 1997-10-14 Hulsebus; Alan Audio circuit producing enhanced ambience
US6072878A (en) * 1997-09-24 2000-06-06 Sonic Solutions Multi-channel surround sound mastering and reproduction techniques that preserve spatial harmonics
AU2004320207A1 (en) * 2004-05-25 2005-12-08 Huonlabs Pty Ltd Audio apparatus and method
US20060215859A1 (en) * 2005-03-28 2006-09-28 Morrow Charles G Sonic method and apparatus
US9197978B2 (en) * 2009-03-31 2015-11-24 Panasonic Intellectual Property Management Co., Ltd. Sound reproduction apparatus and sound reproduction method
US9020152B2 (en) * 2010-03-05 2015-04-28 Stmicroelectronics Asia Pacific Pte. Ltd. Enabling 3D sound reproduction using a 2D speaker arrangement
US8593219B1 (en) * 2012-08-31 2013-11-26 Motorola Solutions, Inc. Method and apparatus for amplifying a radio frequency signal
US9338552B2 (en) 2014-05-09 2016-05-10 Trifield Ip, Llc Coinciding low and high frequency localization panning
US10251012B2 (en) 2016-06-07 2019-04-02 Philip Raymond Schaefer System and method for realistic rotation of stereo or binaural audio
CN109618275B (zh) * 2018-12-29 2020-11-17 武汉轻工大学 多声道的非中心点声场重建方法、设备、存储介质及装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1369813A (en) * 1971-02-02 1974-10-09 Nat Res Dev Reproduction of sound
US3784746A (en) * 1971-07-06 1974-01-08 R Hess Single actuator for effecting multiple controls
US3830978A (en) * 1971-07-08 1974-08-20 Matsushita Electric Ind Co Ltd Circuit for mixing four audio input signals to produce four audio output signals
US3856992A (en) * 1971-10-06 1974-12-24 D Cooper Multidirectional sound reproduction
US3906156A (en) * 1971-10-06 1975-09-16 Duane H Cooper Signal matrixing for directional reproduction of sound
JPS5313962B2 (it) * 1971-12-21 1978-05-13
JPS5210364B2 (it) * 1972-05-02 1977-03-23
US3824342A (en) * 1972-05-09 1974-07-16 Rca Corp Omnidirectional sound field reproducing system
US3883692A (en) * 1972-06-16 1975-05-13 Sony Corp Decoder apparatus with logic circuit for use with a four channel stereo
JPS5236681B2 (it) * 1972-11-30 1977-09-17

Also Published As

Publication number Publication date
FR2266411A1 (it) 1975-10-24
NL181068C (nl) 1987-06-01
CA1020095A (en) 1977-11-01
JPH0137080B2 (it) 1989-08-03
DE2512287C2 (it) 1988-04-07
IT1034536B (it) 1979-10-10
JPS5943880B2 (ja) 1984-10-25
NL7503576A (nl) 1975-09-30
JPS50131501A (it) 1975-10-17
CH625660A5 (it) 1981-09-30
DE2512287A1 (de) 1975-10-09
GB1494751A (en) 1977-12-14
US3997725A (en) 1976-12-14
JPS6022898A (ja) 1985-02-05
FR2266411B1 (it) 1983-07-08
DK120075A (it) 1975-09-27

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Legal Events

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Owner name: BRITISH TECHNOLOGY GROUP LTD

PL Patent ceased