Respiratory signal detection and time domain signal processing method and system
First Claim
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1. A time domain signal processing method, comprising the steps of:
- determining starting points for a plurality of respiratory phases using a tracheal respiratory signal; and
classifying the respiratory phases into inspiratory and expiratory phases using the starting points and a chest respiratory signal.
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Abstract
A respiratory signal detection and time domain signal processing method and system classifies respiratory phases and determines respiratory time data useful in respiratory health determinations. The method and system analyze respiratory signals collected at multiple detection points at least one of which ensures that respiratory phases can be properly classified. Moreover, the method and system employ a time domain signal processing approach that facilitates determination of respiratory time data while realizing savings in computing power relative to frequency domain processing approaches.
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Citations
19 Claims
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1. A time domain signal processing method, comprising the steps of:
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determining starting points for a plurality of respiratory phases using a tracheal respiratory signal; and classifying the respiratory phases into inspiratory and expiratory phases using the starting points and a chest respiratory signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A time domain signal processing method, comprising the steps of:
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determining starting points for a plurality of respiratory phases using a respiratory signal from a first body position; classifying the respiratory phases into inspiratory and expiratory phases using the starting points and a respiratory signal from a second body position; and determining respiratory time data using the starting points and the classified respiratory phases. - View Dependent Claims (12, 13, 14)
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15. A respiratory signal detection and signal processing system, comprising:
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first and second respiratory sound transducers adapted to collect first and second collected respiratory signals from first and second body positions, respectively; and a time domain signal processor adopted to receive first and second received respiratory signals based on the first and second collected respiratory signals, respectively, wherein the time domain signal processor determines starting points for a plurality of respiratory phases using the first received respiratory signal, classifies the respiratory phases into inspiratory and expiratory phases using the starting points and the second received respiratory signal and determines respiratory time data using the starting points and the classified respiratory phases. - View Dependent Claims (16, 17, 18, 19)
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Specification