FR2345047A1 - Systemes de reproduction des sons - Google Patents

Systemes de reproduction des sons

Info

Publication number
FR2345047A1
FR2345047A1 FR7707488A FR7707488A FR2345047A1 FR 2345047 A1 FR2345047 A1 FR 2345047A1 FR 7707488 A FR7707488 A FR 7707488A FR 7707488 A FR7707488 A FR 7707488A FR 2345047 A1 FR2345047 A1 FR 2345047A1
Authority
FR
France
Prior art keywords
sound reproduction
reproduction systems
systems
sound
reproduction
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.)
Granted
Application number
FR7707488A
Other languages
English (en)
Other versions
FR2345047B1 (fr
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.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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 GB1019176A external-priority patent/GB1550628A/en
Application filed by National Research Development Corp UK filed Critical National Research Development Corp UK
Publication of FR2345047A1 publication Critical patent/FR2345047A1/fr
Application granted granted Critical
Publication of FR2345047B1 publication Critical patent/FR2345047B1/fr
Granted 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
FR7707488A 1976-03-15 1977-03-14 Systemes de reproduction des sons Granted FR2345047A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1019176A GB1550628A (en) 1976-03-15 1976-03-15 Sound reproduction systems
GB268677 1977-01-22

Publications (2)

Publication Number Publication Date
FR2345047A1 true FR2345047A1 (fr) 1977-10-14
FR2345047B1 FR2345047B1 (fr) 1984-04-27

Family

ID=26237664

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7707488A Granted FR2345047A1 (fr) 1976-03-15 1977-03-14 Systemes de reproduction des sons

Country Status (8)

Country Link
US (1) US4095049A (fr)
JP (1) JPS52134701A (fr)
CA (1) CA1061721A (fr)
CH (1) CH633400A5 (fr)
DE (1) DE2711299A1 (fr)
DK (1) DK109277A (fr)
FR (1) FR2345047A1 (fr)
NL (1) NL7702790A (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2073556B (en) * 1980-02-23 1984-02-22 Nat Res Dev Sound reproduction systems
US4392019A (en) * 1980-12-19 1983-07-05 Independent Broadcasting Authority Surround sound system
US4815132A (en) * 1985-08-30 1989-03-21 Kabushiki Kaisha Toshiba Stereophonic voice signal transmission system
US6118876A (en) * 1995-09-07 2000-09-12 Rep Investment Limited Liability Company Surround sound speaker system for improved spatial effects
US5708719A (en) * 1995-09-07 1998-01-13 Rep Investment Limited Liability Company In-home theater surround sound speaker system
US5930370A (en) * 1995-09-07 1999-07-27 Rep Investment Limited Liability In-home theater surround sound speaker system
PL1735779T3 (pl) * 2004-04-05 2014-01-31 Koninklijke Philips Nv Urządzenie kodujące, dekodujące, sposoby z nimi powiązane oraz powiązany system audio
EP1749420A4 (fr) * 2004-05-25 2008-10-15 Huonlabs Pty Ltd Dispositif et procede audio
CN101518101B (zh) 2006-09-25 2012-04-18 杜比实验室特许公司 用于增加表示声场的音频信号的空间分辨率的方法和设备
KR101755531B1 (ko) 2010-03-26 2017-07-07 돌비 인터네셔널 에이비 오디오 재생을 위한 오디오 사운드필드 표현을 디코딩하는 방법 및 장치
US9338552B2 (en) 2014-05-09 2016-05-10 Trifield Ip, Llc Coinciding low and high frequency localization panning

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2183974A1 (fr) * 1972-05-09 1973-12-21 Rca Corp
DE2305868A1 (de) * 1973-02-07 1974-08-08 Inst Rundfunktechnik Gmbh Verfahren zur uebertragung quadrophoner signale ueber ukw-rundfunk
US3906156A (en) * 1971-10-06 1975-09-16 Duane H Cooper Signal matrixing for directional reproduction of sound
FR2266411A1 (fr) * 1974-03-26 1975-10-24 Gerzon Michael
GB1414166A (en) * 1972-07-28 1975-11-19 British Broadcasting Corp Quadraphonic sound transmission or recording system

Family Cites Families (4)

* 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
US3679832A (en) * 1971-03-23 1972-07-25 Bell Telephone Labor Inc Three-channel fm stereo transmission
US3856992A (en) * 1971-10-06 1974-12-24 D Cooper Multidirectional sound reproduction
US3814858A (en) * 1972-04-27 1974-06-04 Motorola Inc Multiplex system employing multiple quadrature subcarriers

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3906156A (en) * 1971-10-06 1975-09-16 Duane H Cooper Signal matrixing for directional reproduction of sound
FR2183974A1 (fr) * 1972-05-09 1973-12-21 Rca Corp
GB1414166A (en) * 1972-07-28 1975-11-19 British Broadcasting Corp Quadraphonic sound transmission or recording system
DE2305868A1 (de) * 1973-02-07 1974-08-08 Inst Rundfunktechnik Gmbh Verfahren zur uebertragung quadrophoner signale ueber ukw-rundfunk
FR2266411A1 (fr) * 1974-03-26 1975-10-24 Gerzon Michael

Also Published As

Publication number Publication date
DE2711299C2 (fr) 1988-09-15
JPH0520960B2 (fr) 1993-03-22
CH633400A5 (fr) 1982-11-30
CA1061721A (fr) 1979-09-04
DK109277A (da) 1977-09-16
NL7702790A (nl) 1977-09-19
JPS52134701A (en) 1977-11-11
FR2345047B1 (fr) 1984-04-27
DE2711299A1 (de) 1977-09-22
US4095049A (en) 1978-06-13

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse