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Physiological acoustic monitoring system

  • US 8,870,792 B2
  • Filed: 10/12/2012
  • Issued: 10/28/2014
  • Est. Priority Date: 10/15/2009
  • Status: Active Grant
First Claim
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1. An acoustic monitoring system inputs an acoustic sensor signal responsive to tracheal sounds of a person and generates breath tags and a respiration rate, the breath tags representing the acoustic envelope of the tracheal sounds and the respiration rate representing the inverse period of the acoustic envelope, the breath tags and respiration rate having a sufficiently low bandwidth to share a data channel with other physiological parameters, the acoustic monitor comprising:

  • an acoustic sensor input;

    an A/D converter that digitizes the sensor input and outputs a digitized sensor signal;

    a decimation filter and mixer that reduces the data rate of the digitized sensor signal and outputs a digitized raw audio; and

    an acoustic parameter processor that generates a respiration rate and breath tags in response to the digitized raw audio.

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