GB1439174A - Surround sound systems - Google Patents

Surround sound systems

Info

Publication number
GB1439174A
GB1439174A GB2174873A GB2174873A GB1439174A GB 1439174 A GB1439174 A GB 1439174A GB 2174873 A GB2174873 A GB 2174873A GB 2174873 A GB2174873 A GB 2174873A GB 1439174 A GB1439174 A GB 1439174A
Authority
GB
United Kingdom
Prior art keywords
surround sound
sound systems
systems
surround
sound
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
GB2174873A
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.)
RCA Corp
Original Assignee
RCA Corp
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 RCA Corp filed Critical RCA Corp
Publication of GB1439174A publication Critical patent/GB1439174A/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 Physics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • General Physics & Mathematics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Algebra (AREA)
  • Multimedia (AREA)
  • Stereophonic System (AREA)
  • Stereo-Broadcasting Methods (AREA)
GB2174873A 1972-05-09 1973-05-08 Surround sound systems Expired GB1439174A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/251,836 US4316058A (en) 1972-05-09 1972-05-09 Sound field transmission system surrounding a listener

Publications (1)

Publication Number Publication Date
GB1439174A true GB1439174A (en) 1976-06-09

Family

ID=22953617

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2174873A Expired GB1439174A (en) 1972-05-09 1973-05-08 Surround sound systems

Country Status (15)

Country Link
US (1) US4316058A (US20080293856A1-20081127-C00127.png)
JP (1) JPS4956504A (US20080293856A1-20081127-C00127.png)
AT (1) AT348270B (US20080293856A1-20081127-C00127.png)
BR (1) BR7303333D0 (US20080293856A1-20081127-C00127.png)
CA (1) CA984301A (US20080293856A1-20081127-C00127.png)
CH (1) CH595726A5 (US20080293856A1-20081127-C00127.png)
DD (1) DD104674A5 (US20080293856A1-20081127-C00127.png)
DE (1) DE2317123A1 (US20080293856A1-20081127-C00127.png)
DK (1) DK143629C (US20080293856A1-20081127-C00127.png)
ES (1) ES414569A1 (US20080293856A1-20081127-C00127.png)
FR (1) FR2183976B1 (US20080293856A1-20081127-C00127.png)
GB (1) GB1439174A (US20080293856A1-20081127-C00127.png)
IT (1) IT984180B (US20080293856A1-20081127-C00127.png)
NL (1) NL7306406A (US20080293856A1-20081127-C00127.png)
SE (1) SE385426B (US20080293856A1-20081127-C00127.png)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4464745A (en) * 1981-11-27 1984-08-07 Sanders Associates, Inc. High dynamic range multiplexing system
CA1236607A (en) * 1985-09-23 1988-05-10 Northern Telecom Limited Microphone arrangement
US4748669A (en) * 1986-03-27 1988-05-31 Hughes Aircraft Company Stereo enhancement system
US5625696A (en) * 1990-06-08 1997-04-29 Harman International Industries, Inc. Six-axis surround sound processor with improved matrix and cancellation control
FR2682249B1 (fr) * 1991-10-08 1993-12-03 Thomson Csf Procede de demodulation numerique d'un signal composite.
US5602923A (en) * 1994-03-07 1997-02-11 Sony Corporation Theater sound system with upper surround channels
US5661808A (en) 1995-04-27 1997-08-26 Srs Labs, Inc. Stereo 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
WO2014190140A1 (en) 2013-05-23 2014-11-27 Alan Kraemer Headphone audio enhancement system
DE102021203639A1 (de) * 2021-04-13 2022-10-13 Kaetel Systems Gmbh Lautsprechersystem, Verfahren zum Herstellen des Lautsprechersystems, Beschallungsanlage für einen Vorführbereich und Vorführbereich

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3257511A (en) * 1960-04-18 1966-06-21 Zenith Radio Corp Stereo em transmission system
US3375329A (en) * 1967-05-02 1968-03-26 Francis E Ryan Monaxial quadraphonic recording system
US3708623A (en) * 1970-04-29 1973-01-02 Quadracast Syst Inc Compatible four channel fm system
US3679832A (en) * 1971-03-23 1972-07-25 Bell Telephone Labor Inc Three-channel fm stereo transmission
DE2264591A1 (de) * 1971-04-15 1974-06-12 Matsushita Electric Ind Co Ltd Vierkanal-fm-empfaenger
DE2327834C3 (de) * 1973-06-01 1979-09-13 Kloeckner-Humboldt-Deutz Ag, 5000 Koeln Vorrichtung zum Trennen von Mischungen wenigstens teilweise schmelzflüssiger Metalle, Metallverbindungen und/oder metallhaltiger Schlacke in mindestens zwei Phasen unterschiedlicher Dichte

Also Published As

Publication number Publication date
DK143629C (da) 1982-02-08
DK143629B (da) 1981-09-14
NL7306406A (US20080293856A1-20081127-C00127.png) 1973-11-13
AU5511573A (en) 1974-11-07
BR7303333D0 (pt) 1974-07-11
ES414569A1 (es) 1976-02-01
FR2183976A1 (US20080293856A1-20081127-C00127.png) 1973-12-21
ATA410373A (de) 1978-06-15
US4316058A (en) 1982-02-16
CH595726A5 (US20080293856A1-20081127-C00127.png) 1978-02-28
AT348270B (de) 1979-02-12
DE2317123A1 (de) 1973-11-22
CA984301A (en) 1976-02-24
IT984180B (it) 1974-11-20
DD104674A5 (US20080293856A1-20081127-C00127.png) 1974-03-12
JPS4956504A (US20080293856A1-20081127-C00127.png) 1974-06-01
FR2183976B1 (US20080293856A1-20081127-C00127.png) 1977-12-30
SE385426B (sv) 1976-06-28

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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