DK137110B - Sound reproduction apparatus. - Google Patents

Sound reproduction apparatus.

Info

Publication number
DK137110B
DK137110B DK253273AA DK253273A DK137110B DK 137110 B DK137110 B DK 137110B DK 253273A A DK253273A A DK 253273AA DK 253273 A DK253273 A DK 253273A DK 137110 B DK137110 B DK 137110B
Authority
DK
Denmark
Prior art keywords
reproduction apparatus
sound reproduction
sound
reproduction
Prior art date
Application number
DK253273AA
Other languages
Danish (da)
Other versions
DK137110C (en
Inventor
Roy Martin Christensen
James John Gibson
Allen Leroy Limberg
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 DK137110B publication Critical patent/DK137110B/en
Application granted granted Critical
Publication of DK137110C publication Critical patent/DK137110C/da

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)
DK253273AA 1972-05-09 1973-05-08 Sound reproduction apparatus. DK137110B (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 (2)

Publication Number Publication Date
DK137110B true DK137110B (en) 1978-01-16
DK137110C DK137110C (en) 1978-06-19

Family

ID=22953214

Family Applications (1)

Application Number Title Priority Date Filing Date
DK253273AA DK137110B (en) 1972-05-09 1973-05-08 Sound reproduction apparatus.

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
FR2183974A1 (en) 1973-12-21
JPS5215201B2 (en) 1977-04-27
AU5511673A (en) 1974-11-07
BR7303322D0 (en) 1974-07-11
DK137110C (en) 1978-06-19
GB1432153A (en) 1976-04-14
NL7306404A (en) 1973-11-13
JPS4955301A (en) 1974-05-29
AT350294B (en) 1979-05-25
DE2317124A1 (en) 1973-11-22
CH565494A5 (en) 1975-08-15
FR2183974B1 (en) 1978-02-10
DD104673A5 (en) 1974-03-12
IT984179B (en) 1974-11-20
ATA410273A (en) 1978-10-15
CA976090A (en) 1975-10-14
ES414567A1 (en) 1976-02-01
US3824342A (en) 1974-07-16
SE378969B (en) 1975-09-15

Similar Documents

Publication Publication Date Title
SE389253B (en) SPEAKERS
IT986369B (en) ELECTROACOUSTIC TRANSDUCER
DK137110B (en) Sound reproduction apparatus.
IT989118B (en) ELECTROACOUSTIC TRANSDUCER
IT987462B (en) REPRODUCTION APPARATUS
AT332139B (en) VOICE RECORDER
IT989204B (en) ELECTROACOUSTIC TRANSDUCER
NL168634C (en) ELECTROPHOTOGRAPHIC REPRODUCTION DEVICE.
NL182518C (en) TURNTABLE.
CH556590A (en) CASSETTE MAGNETIC SOUND DEVICE.
DK139444B (en) Turntable.
SE389278B (en) FOAM MOTATION APPARATUS.
NL162486C (en) REPRODUCTION DEVICE.
NO132742C (en) AUDIO BAND DEVICE.
IT979509B (en) ELECTROACOUSTIC TRANSDUCER
NL162283C (en) SPEAKER HOLDER.
NL188129C (en) MID-FREQUENT AMPLIFIER.
ES192261Y (en) HORN.
NL181084C (en) REPRODUCTION SYSTEM.
DK139543B (en) Reproduction camera.
NO136433C (en) REPRODUCTION LENS.
NL176612C (en) GRAMOPHONE.
IL41285A0 (en) Sound reproduction apparatus
IT992255B (en) PHOTOSTATIC REPRODUCTION METHOD
BE807626A (en) CARBON MICROPHONE