GB604244A - Improvements in or relating to apparatus for stereophonically recording transmitting and reproducing sound - Google Patents

Improvements in or relating to apparatus for stereophonically recording transmitting and reproducing sound

Info

Publication number
GB604244A
GB604244A GB31757/45A GB3175745A GB604244A GB 604244 A GB604244 A GB 604244A GB 31757/45 A GB31757/45 A GB 31757/45A GB 3175745 A GB3175745 A GB 3175745A GB 604244 A GB604244 A GB 604244A
Authority
GB
United Kingdom
Prior art keywords
relating
reproducing sound
loudspeakers
spaced
stereophonic
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
GB31757/45A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB604244A publication Critical patent/GB604244A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/08—Arrangements for combining channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S1/00—Two-channel systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Stereophonic Arrangements (AREA)

Abstract

604,244. Binaural and directional systems. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Nov. 24, 1945, No. 31757. Convention date, June 24, 1940. [Class 40 (iv)] In a stereophonic transmission or recording and reproducing system, alternate bands from the outputs of two spaced microphones 1 and 2 are selected by complementary filters 5 and 6 and are combined in a single wireless or other transmission channel 9 or in a single recording channel. In reproduction, the alternate bands are again separated and fed to spaced loudspeakers 17 and 18. In a modification, frequencies below 250 and above 4000 which do not materially assist in producing a stereophonic effect are separated out by additional filters and reproduced by further separate loudspeakers.
GB31757/45A 1940-06-24 1945-11-24 Improvements in or relating to apparatus for stereophonically recording transmitting and reproducing sound Expired GB604244A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL604244X 1940-06-24

Publications (1)

Publication Number Publication Date
GB604244A true GB604244A (en) 1948-06-30

Family

ID=19787874

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31757/45A Expired GB604244A (en) 1940-06-24 1945-11-24 Improvements in or relating to apparatus for stereophonically recording transmitting and reproducing sound

Country Status (1)

Country Link
GB (1) GB604244A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1208761B (en) * 1958-12-06 1966-01-13 Telefunken Patent TV receiver for receiving broadcasts with a stereophonic accompanying sound signal
FR2217871A1 (en) * 1973-02-15 1974-09-06 Hirata Yoshimutsu
GB2329747A (en) * 1997-09-25 1999-03-31 Samsung Electronics Co Ltd Apparatus for recording stereophonic sound

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1208761B (en) * 1958-12-06 1966-01-13 Telefunken Patent TV receiver for receiving broadcasts with a stereophonic accompanying sound signal
FR2217871A1 (en) * 1973-02-15 1974-09-06 Hirata Yoshimutsu
GB2329747A (en) * 1997-09-25 1999-03-31 Samsung Electronics Co Ltd Apparatus for recording stereophonic sound

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