Physiological acoustic monitoring system
First Claim
1. A method for simulating physiological sounds of a patient responsive to measurements from one or more sensors attached to the patient, the method comprising:
- detecting a first portion in an acoustic signal corresponding to a physiological process of inspiration;
detecting a second portion in the acoustic signal corresponding to a physiological process of expiration;
generating a first sound corresponding to the inspiration process based on the detected first portion, wherein the first sound includes a first characteristic;
generating a second sound corresponding to the expiration process based on the detected second portion, wherein the second sound includes a second characteristic that is different than the first characteristic of the first sound;
mixing the first sound and the second sound with a noise sound to generate a simulated physiological sound; and
output the simulated physiological sound corresponding to physiological sounds of respiration.
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Abstract
A physiological acoustic monitoring system receives physiological data from an acoustic sensor, down-samples the data to generate raw audio of breathing sounds and compresses the raw audio. The acoustic monitoring system has an acoustic sensor signal responsive to tracheal sounds in a person. An A/D converter is responsive to the sensor signal so as to generate breathing sound data. A decimation filter and mixer down-samples the breathing sound data to raw audio data. A coder/compressor generates compressed audio data from the raw audio data. A decoder/decompressor decodes and decompresses the compressed audio data into decompressed audio data. The decompressed audio data is utilized to generate respiration-related parameters in real-time. The compressed audio data is stored and retrieved so as to generate respiration-related parameters in non-real-time. The real-time and non-real-time parameters are compared to verify matching results across multiple monitors.
910 Citations
10 Claims
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1. A method for simulating physiological sounds of a patient responsive to measurements from one or more sensors attached to the patient, the method comprising:
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detecting a first portion in an acoustic signal corresponding to a physiological process of inspiration; detecting a second portion in the acoustic signal corresponding to a physiological process of expiration; generating a first sound corresponding to the inspiration process based on the detected first portion, wherein the first sound includes a first characteristic; generating a second sound corresponding to the expiration process based on the detected second portion, wherein the second sound includes a second characteristic that is different than the first characteristic of the first sound; mixing the first sound and the second sound with a noise sound to generate a simulated physiological sound; and output the simulated physiological sound corresponding to physiological sounds of respiration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification