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Signal matrixing for directional reproduction of sound

  • US 3,906,156 A
  • Filed: 09/13/1972
  • Issued: 09/16/1975
  • Est. Priority Date: 10/06/1971
  • Status: Expired due to Term
First Claim
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1. A method of producing signals with directional audio information comprising matrixing source signals representative of sounds from different bearing angles theta , each measured from a source reference direction, to form at least three transmission signals, T , T and TT, capable of being re-matrixed for production of presentation signals, each of said transmission signalshaving encoding mixing coefficients substantially corresponding to values of single-variable 360* repetitive functions of said bearing angles theta , said single-variable functions being

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