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Signal processing method and pulse wave signal processing method

  • US 6,780,158 B2
  • Filed: 12/13/2002
  • Issued: 08/24/2004
  • Est. Priority Date: 12/14/2001
  • Status: Expired due to Fees
First Claim
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1. A method of processing two continuous signals having an identical fundamental frequency, comprising the steps of:

  • providing a first signal and a second signal as the two continuous signals;

    obtaining a first spectrum which is either one of a frequency spectrum or a frequency power spectrum of the first signal in a predetermined time period;

    obtaining a second spectrum which is either one of a frequency spectrum or a frequency power spectrum of the second signal in the predetermined time period;

    obtaining a first normalized value which corresponds a ratio of a difference between the first spectrum and the second spectrum and a sum of the first spectrum and the second spectrum at the fundamental frequency;

    obtaining a first ratio of an amplitude of a signal component of the first signal and an amplitude of a signal component of the second signal based on the first normalized value.

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