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Signal separation method, signal separation device, signal separation program and recording medium

  • US 20060058983A1
  • Filed: 09/01/2004
  • Published: 03/16/2006
  • Est. Priority Date: 09/02/2003
  • Status: Active Grant
First Claim
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1. :

  • A signal separation method that separates and extracts signals under conditions where N (N≧

    2) signals are mixed together and observed with M sensors, comprising;

    a procedure that transforms the observed signal values observed by said sensors into frequency-domain signal values, a procedure that uses said frequency-domain signal values to calculate at each frequency the relative values of the observed values between said sensors (including mapping these relative values), a procedure that clusters said relative values into N clusters, a procedure that calculates a representative value for each of said clusters, a procedure that uses said representative values to generate a mask for the purpose of extracting, from said frequency-domain signal values, mixed signal values comprising the signals emitted from V (2≦

    V≦

    M) signal sources, a procedure that uses said mask to extract said mixed signal values from said frequency-domain signal values, and a procedure that separates and extracts the values of V signals from said mixed signal values.

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