Apparatus and method for breathing pattern determination using a non-contact microphone
First Claim
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1. Apparatus for analyzing respiration of a subject, comprising:
- a non-contact microphone that does not contact the subject, adapted to generate a raw signal representing airflow sounds that are generated at the microphone by airflow of the respiration; and
a control unit, adapted to;
analyze the airflow sounds, by deriving an expiratory airflow sound signal from the raw signal, and analyzing the expiratory airflow sound signal, to determine a first set of one or more parameters of the respiration, andapply an algorithm to the first set of parameters to derive a second set of one or more estimated parameters of the respiration, including an inspiration time of the subject.
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Abstract
A method is provided for analyzing respiration of a subject. Using a non-contact microphone, a raw signal indicative of air-flow sounds of the respiration is generated. The raw signal is analyzed to determine a first set of one or more parameters of the respiration. An algorithm is applied to the first set of parameters to derive a second set of one or more estimated parameters of the respiration that are not generally directly measurable in the raw signal. Other embodiments are also described.
105 Citations
48 Claims
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1. Apparatus for analyzing respiration of a subject, comprising:
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a non-contact microphone that does not contact the subject, adapted to generate a raw signal representing airflow sounds that are generated at the microphone by airflow of the respiration; and a control unit, adapted to; analyze the airflow sounds, by deriving an expiratory airflow sound signal from the raw signal, and analyzing the expiratory airflow sound signal, to determine a first set of one or more parameters of the respiration, and apply an algorithm to the first set of parameters to derive a second set of one or more estimated parameters of the respiration, including an inspiration time of the subject. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
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Specification