Apparatus and method for breathing pattern determination using a non-contact microphone
First Claim
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1. A method for modifying naturally-occurring multi-phase biorhythmic activity of a subject, the method comprising:
- detecting, using a sensor, a signal indicative of the multi-phase biorhythmic activity;
analyzing, using a control unit, the signal to determine one or more parameters of a filter;
filtering, using the control unit, background noise from the signal using the filter having the parameters;
at least in part responsively to the filtered signal, determining, using the control unit, a stimulus input which is operative to change at least one aspect of the biorhythmic activity of the subject; and
providing the stimulus input to the subject, using a stimulator,wherein the multi-phase biorhythmic activity includes respiration of the subject, and wherein detecting the signal comprises detecting the signal indicative of the respiration.
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Abstract
A method is provided for analyzing respiration of a subject (20). Using a non-contact microphone (22), a raw signal indicative of airflow 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.
183 Citations
18 Claims
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1. A method for modifying naturally-occurring multi-phase biorhythmic activity of a subject, the method comprising:
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detecting, using a sensor, a signal indicative of the multi-phase biorhythmic activity; analyzing, using a control unit, the signal to determine one or more parameters of a filter; filtering, using the control unit, background noise from the signal using the filter having the parameters; at least in part responsively to the filtered signal, determining, using the control unit, a stimulus input which is operative to change at least one aspect of the biorhythmic activity of the subject; and providing the stimulus input to the subject, using a stimulator, wherein the multi-phase biorhythmic activity includes respiration of the subject, and wherein detecting the signal comprises detecting the signal indicative of the respiration. - View Dependent Claims (2, 3, 4, 5, 6, 9)
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7. A method for modifying naturally-occurring multi-phase biorhythmic activity of a subject, the method comprising:
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detecting, using a sensor, a signal indicative of the multi-phase biorhythmic activity; analyzing, using a control unit, the signal to determine one or more parameters of a filter; filtering, using the control unit, background noise from the signal using the filter having the parameters; at least in part responsively to the filtered signal, determining, using the control unit, a stimulus input which is operative to change at least one aspect of the biorhythmic activity of the subject; and providing the stimulus input to the subject, using a stimulator, wherein filtering the background noise comprises performing spectral analysis on the signal to produce a frequency spectrum. - View Dependent Claims (8)
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10. Apparatus for modifying naturally-occurring multi-phase biorhythmic activity of a subject, the apparatus comprising:
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a sensor, adapted to detect a signal indicative of the multi-phase biorhythmic activity; a control unit, adapted to; analyze the signal to determine one or more parameters of a filter, filter background noise from the signal using the filter having the parameters, and at least in part responsively to the filtered signal, determine a stimulus input which is operative to change at least one aspect of the biorhythmic activity of the subject; and a stimulator, adapted to provide the stimulus input to the subject, wherein the multi-phase biorhythmic activity includes respiration of the subject, and wherein the sensor is adapted to detect the signal indicative of the respiration. - View Dependent Claims (11, 12, 13, 14, 15, 18)
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16. Apparatus for modifying naturally-occurring multi-phase biorhythmic activity of a subject, the apparatus comprising:
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a sensor, adapted to detect a signal indicative of the multi-phase biorhythmic activity; a control unit, adapted to; analyze the signal to determine one or more parameters of a filter, filter background noise from the signal using the filter having the parameters, and at least in part responsively to the filtered signal, determine a stimulus input which is operative to change at least one aspect of the biorhythmic activity of the subject; and a stimulator, adapted to provide the stimulus input to the subject, wherein the control unit is adapted to filter the background noise by performing spectral analysis on the signal to produce a frequency spectrum. - View Dependent Claims (17)
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Specification