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SYSTEMS AND METHODS FOR VARIABLE FILTER ADJUSTMENT BY HEART RATE METRIC FEEDBACK

  • US 20140114147A1
  • Filed: 07/25/2012
  • Published: 04/24/2014
  • Est. Priority Date: 08/02/2011
  • Status: Active Grant
First Claim
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1. A physiological signal processing system comprising:

  • a physiological sensor that is configured to generate a physiological waveform that includes cardiovascular and pulmonary signal components therein;

    a variable high pass filter and a variable low pass filter that are responsive to the physiological waveform and that are configured to high pass and low pass filter, respectively, the physiological waveform in response to at least one corner frequency that is applied thereto;

    a heart rate metric extractor that is responsive to the variable high pass filter and that is configured to extract a heart rate metric from the physiological waveform that is filtered by the variable high pass filter;

    a respiration rate metric extractor that is responsive to the variable low pass filter and that is configured to extract a respiration rate metric from the physiological waveform that is filtered by the variable low pass filter; and

    a corner frequency adjustor that is responsive to the metric extractor and that is configured to determine the at least one corner frequency that is applied to the variable high pass filter and the variable low pass filter from the heart rate metric.

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