GB1432153A - Sound reproducing system - Google Patents

Sound reproducing system

Info

Publication number
GB1432153A
GB1432153A GB2174673A GB2174673A GB1432153A GB 1432153 A GB1432153 A GB 1432153A GB 2174673 A GB2174673 A GB 2174673A GB 2174673 A GB2174673 A GB 2174673A GB 1432153 A GB1432153 A GB 1432153A
Authority
GB
United Kingdom
Prior art keywords
acos
asin
cosine
sound
sine
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
GB2174673A
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 GB1432153A publication Critical patent/GB1432153A/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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Algebra (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Stereophonic System (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Stereophonic Arrangements (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Circuit For Audible Band Transducer (AREA)
GB2174673A 1972-05-09 1973-05-08 Sound reproducing system Expired GB1432153A (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
GB1432153A true GB1432153A (en) 1976-04-14

Family

ID=22953214

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2174673A Expired GB1432153A (en) 1972-05-09 1973-05-08 Sound reproducing system

Country Status (15)

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

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 (it) * 2002-03-18 2003-09-18 Daniele Ramenzoni Dispositivo per captare movimenti anche piccoli nell'aria e nei fluidi adatto per applicazioni cibernetiche e di laboratorio come trasduttor
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 (zh) * 2012-07-11 2015-08-21 Univ Nat Cheng Kung 建立最佳化揚聲器聲場之方法
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
US3824342A (en) 1974-07-16
FR2183974B1 (it) 1978-02-10
DE2317124A1 (de) 1973-11-22
CH565494A5 (it) 1975-08-15
BR7303322D0 (pt) 1974-07-11
AT350294B (de) 1979-05-25
ES414567A1 (es) 1976-02-01
IT984179B (it) 1974-11-20
AU5511673A (en) 1974-11-07
JPS4955301A (it) 1974-05-29
DD104673A5 (it) 1974-03-12
CA976090A (en) 1975-10-14
ATA410273A (de) 1978-10-15
DK137110C (it) 1978-06-19
FR2183974A1 (it) 1973-12-21
SE378969B (it) 1975-09-15
NL7306404A (it) 1973-11-13
JPS5215201B2 (it) 1977-04-27
DK137110B (da) 1978-01-16

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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