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Non-invasive blood flow measurements utilizing autoregressive analysis with averaged reflection coefficients

  • US 4,719,923 A
  • Filed: 05/06/1985
  • Issued: 01/19/1988
  • Est. Priority Date: 05/06/1985
  • Status: Expired due to Term
First Claim
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1. An autoregressive analysis system for obtaining the average power spectrum of a plurality of signal groups each comprising a plurality of information signals, comprising:

  • means for determining the start and end of each of said signal groups;

    means responsive to said information signals of each of said groups as determined by said determining means for calculating reflection coefficients for each of said signal groups;

    means responsive to said information signals and said reflection coefficients for each of said signal groups for generating a residual energy level for each of said signal groups;

    means for averaging said reflection coefficients of said signal groups and said residual energy levels of said signal groups; and

    means responsive to said averaged reflection coefficients and said averaged residual energy level for generating the average power spectrum.

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