Sound-based spirometric devices, systems and methods
First Claim
1. A handheld mobile device configured to generate expiratory flow-based pulmonary function data, the device comprising:
- a microphone operable to convert sound of a subject'"'"'s forced expiratory maneuver into a digital data file, wherein the sound of the subject'"'"'s forced expiratory maneuver includes sound projected from the subject'"'"'s mouth without use of a mouthpiece during the subject'"'"'s forced expiratory maneuver; and
a processor operatively coupled with the microphone; and
a data storage device operatively coupled with the processor and storing instructions that, when executed by the processor, cause the processor to process the digital data file to generate expiratory flow-based pulmonary function data for assessing pulmonary function of the subject including calculating at least one flow rate based on an estimated model of the subject'"'"'s vocal tract and estimated reverberation of sound around the subject'"'"'s head, wherein processing the digital data file includes at least one of the group consisting of;
(1) compensating for estimated pressure losses sustained over a distance between the subject and the microphone, and (2) compensating for at least one of reverberations and reflections of sound of the forced expiratory maneuver.
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Accused Products
Abstract
Devices, system, and methods generate expiratory flow-based pulmonary function data by processing a digital audio file of sound of a subject'"'"'s forced expiratory maneuver. A mobile device configured to generate expiratory flow-based pulmonary function data includes a microphone, a processor, and a data storage device. The microphone is operable to convert sound of the subject'"'"'s forced expiratory maneuver into a digital data file. The processor is operatively coupled with the microphone. The data storage device is operatively coupled with the processor and stores instructions that, when executed by the processor, cause the processor to process the digital data file to generate expiratory flow-based pulmonary function data for assessing pulmonary function of the subject. The sound of the subject'"'"'s forced expiratory maneuver can be converted into the digital data file without contact between the subject'"'"'s mouth and the mobile device.
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Citations
20 Claims
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1. A handheld mobile device configured to generate expiratory flow-based pulmonary function data, the device comprising:
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a microphone operable to convert sound of a subject'"'"'s forced expiratory maneuver into a digital data file, wherein the sound of the subject'"'"'s forced expiratory maneuver includes sound projected from the subject'"'"'s mouth without use of a mouthpiece during the subject'"'"'s forced expiratory maneuver; and a processor operatively coupled with the microphone; and a data storage device operatively coupled with the processor and storing instructions that, when executed by the processor, cause the processor to process the digital data file to generate expiratory flow-based pulmonary function data for assessing pulmonary function of the subject including calculating at least one flow rate based on an estimated model of the subject'"'"'s vocal tract and estimated reverberation of sound around the subject'"'"'s head, wherein processing the digital data file includes at least one of the group consisting of;
(1) compensating for estimated pressure losses sustained over a distance between the subject and the microphone, and (2) compensating for at least one of reverberations and reflections of sound of the forced expiratory maneuver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification