CA976090A - Sound reproducing system - Google Patents

Sound reproducing system

Info

Publication number
CA976090A
CA976090A CA169,399A CA169399A CA976090A CA 976090 A CA976090 A CA 976090A CA 169399 A CA169399 A CA 169399A CA 976090 A CA976090 A CA 976090A
Authority
CA
Canada
Prior art keywords
reproducing system
sound reproducing
sound
reproducing
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
CA169,399A
Other versions
CA169399S (en
Inventor
James J. Gibson
Roy M. Christensen
Allen L. Limberg
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
Application granted granted Critical
Publication of CA976090A publication Critical patent/CA976090A/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
CA169,399A 1972-05-09 1973-04-24 Sound reproducing system Expired CA976090A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00251742A US3824342A (en) 1972-05-09 1972-05-09 Omnidirectional sound field reproducing system

Publications (1)

Publication Number Publication Date
CA976090A true CA976090A (en) 1975-10-14

Family

ID=22953214

Family Applications (1)

Application Number Title Priority Date Filing Date
CA169,399A Expired CA976090A (en) 1972-05-09 1973-04-24 Sound reproducing system

Country Status (15)

Country Link
US (1) US3824342A (en)
JP (1) JPS5215201B2 (en)
AT (1) AT350294B (en)
BR (1) BR7303322D0 (en)
CA (1) CA976090A (en)
CH (1) CH565494A5 (en)
DD (1) DD104673A5 (en)
DE (1) DE2317124A1 (en)
DK (1) DK137110B (en)
ES (1) ES414567A1 (en)
FR (1) FR2183974B1 (en)
GB (1) GB1432153A (en)
IT (1) IT984179B (en)
NL (1) NL7306404A (en)
SE (1) SE378969B (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3970788A (en) * 1971-10-06 1976-07-20 Cooper Duane H Monaural and stereo compatible multidirectional sound matrixing
GB1494751A (en) * 1974-03-26 1977-12-14 Nat Res Dev Sound reproduction systems
US3940559A (en) * 1974-04-18 1976-02-24 Cbs Inc. Compatible four channel recording and reproducing system
GB1512514A (en) * 1974-07-12 1978-06-01 Nat Res Dev Microphone assemblies
JPS5187002A (en) * 1975-01-29 1976-07-30 Nippon Telegraph & Telephone 4 chanerusutereohoshiki
JPS5230402A (en) * 1975-09-04 1977-03-08 Victor Co Of Japan Ltd Multichannel stereo system
US4074084A (en) * 1975-11-05 1978-02-14 Berg Johannes C M Van Den Method and apparatus for receiving sound intended for stereophonic reproduction
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
US4236039A (en) * 1976-07-19 1980-11-25 National Research Development Corporation Signal matrixing for directional reproduction of sound
US4392019A (en) * 1980-12-19 1983-07-05 Independent Broadcasting Authority Surround sound system
HU190912B (en) * 1983-09-07 1986-12-28 Polyak,Gabor,Hu Method and apparatus for making stereoscopic sound effects
US6041127A (en) * 1997-04-03 2000-03-21 Lucent Technologies Inc. Steerable and variable first-order differential microphone array
ITMI20020566A1 (en) * 2002-03-18 2003-09-18 Daniele Ramenzoni DEVICE TO CAPTURE EVEN SMALL MOVEMENTS IN THE AIR AND IN FLUIDS SUITABLE FOR CYBERNETIC AND LABORATORY APPLICATIONS AS TRANSDUCER
US8130977B2 (en) * 2005-12-27 2012-03-06 Polycom, Inc. Cluster of first-order microphones and method of operation for stereo input of videoconferencing system
TWI498014B (en) * 2012-07-11 2015-08-21 Univ Nat Cheng Kung Method for generating optimal sound field using speakers
US10631085B2 (en) 2018-05-07 2020-04-21 Crestron Electronics, Inc. Microphone array system with Ethernet connection

Family Cites Families (2)

* 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
GB1359509A (en) * 1970-06-15 1974-07-10 Scheiber P Decoder apparatus for use in a multidirectional sound system

Also Published As

Publication number Publication date
SE378969B (en) 1975-09-15
AT350294B (en) 1979-05-25
JPS4955301A (en) 1974-05-29
FR2183974B1 (en) 1978-02-10
DK137110C (en) 1978-06-19
AU5511673A (en) 1974-11-07
US3824342A (en) 1974-07-16
IT984179B (en) 1974-11-20
BR7303322D0 (en) 1974-07-11
DK137110B (en) 1978-01-16
CH565494A5 (en) 1975-08-15
FR2183974A1 (en) 1973-12-21
DD104673A5 (en) 1974-03-12
JPS5215201B2 (en) 1977-04-27
ES414567A1 (en) 1976-02-01
GB1432153A (en) 1976-04-14
DE2317124A1 (en) 1973-11-22
ATA410273A (en) 1978-10-15
NL7306404A (en) 1973-11-13

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