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SIGNAL PROCESSING DEVICE, PULSE WAVE MEASURING APPARATUS, AND SIGNAL PROCESSING METHOD

  • US 20140288885A1
  • Filed: 03/14/2014
  • Published: 09/25/2014
  • Est. Priority Date: 03/19/2013
  • Status: Abandoned Application
First Claim
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1. A signal processing device comprising:

  • a first acquisition unit that acquires a first signal indicating a pulse wave of a living body from a first measuring unit that measures the pulse wave;

    a second acquisition unit that acquires a second signal indicating the pulse wave of the living body from a second measuring unit that measures the pulse wave at different sensitivities from the first measuring unit;

    an estimation unit that estimates a ratio of sensitivity of the first measuring unit to sensitivity of the second measuring unit from a first spectrum of the first signal and a second spectrum of the second signal; and

    a subtraction unit that subtracts the second spectrum from the first spectrum so as to cancel noise included in the first spectrum and the second spectrum, using the ratio estimated by the estimation unit.

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