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System for measuring the period of a quasi-periodic signal

  • US 5,584,295 A
  • Filed: 09/01/1995
  • Issued: 12/17/1996
  • Est. Priority Date: 09/01/1995
  • Status: Expired due to Fees
First Claim
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1. A system for measuring the periodic content of an input signal, comprising:

  • (A) autocorrelation means, responsive to the input signal, for generating a sequence of autocorrelation functions, each of the autocorrelation functions in the sequence being representative of an autocorrelation function of a portion of the input signal; and

    (B) temporal filter means for temporally filtering the autocorrelation functions to generate a lag histogram.

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