PHYSIOLOGICAL ACOUSTIC MONITORING SYSTEM
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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.
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Citations
20 Claims
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1. (canceled)
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2. 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; generating a second sound including a different characteristic than the first sound corresponding to the expiration process based on the detected second portion; mixing the first sound and the second sound with a noise sound; and output the mixed sound corresponding to physiological sounds of respiration. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10)
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11. A system 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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one or more acoustic sensors configured to detect acoustic signals; and one or more hardware processors configured to; detect a first time of occurrence of a physiological process of inspiration from the acoustic signals; detect a second time of occurrence of a physiological process of expiration from the acoustic signals; generating a first sound based on the detected first time of occurrence of the physiological process of inspiration; generating a second sound based on the detected second time of occurrence of the physiological process of expiration; mixing the first sound and the second sound with a noise sound; and output the mixed sound corresponding to physiological sounds of respiration including the physiological process of inspiration and the physiological process of expiration. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A system 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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means for detecting a physiological process of inspiration from acoustic signals; means for detecting a physiological process of expiration from the acoustic signals; means for generating sounds corresponding to the detected physiological process of inspiration and the physiological process of expiration; and means for mixing the first sound and the second sound with a noise sound.
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Specification