Physiological acoustic monitoring system
First Claim
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1. A method of generating synthetic physiological sound responsive to a signal detected by an acoustic sensor attached to a patient, the method comprising:
- processing, at a patient monitor, a signal from an acoustic sensor responsive to a piezoelectric modulation of the acoustic sensor;
detecting envelope features in the processed signal responsive to a periodic physiological process;
generating an idealized envelope based on the detected envelope features;
comparing the signal with sound signatures corresponding to physiological sounds stored in a first data repository;
detecting a physiological event from the processed signal based on the comparison of the signal with the sound signatures; and
generating a synthetic physiological sound comprising a first sound corresponding to the generated idealized envelope and a second sound corresponding to a portion of the processed signal with the detected physiological event.
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Abstract
An acoustic monitoring system has an acoustic front-end, a first signal path from the acoustic front-end directly to an audio transducer and a second signal path from the acoustic front-end to an acoustic data processor via an analog-to-digital converter. The acoustic front-end receives an acoustic sensor signal responsive to body sounds in a person. The audio transducer provides continuous audio of the body sounds. The acoustic data processor provides audio of the body sounds upon user demand.
996 Citations
16 Claims
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1. A method of generating synthetic physiological sound responsive to a signal detected by an acoustic sensor attached to a patient, the method comprising:
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processing, at a patient monitor, a signal from an acoustic sensor responsive to a piezoelectric modulation of the acoustic sensor; detecting envelope features in the processed signal responsive to a periodic physiological process; generating an idealized envelope based on the detected envelope features; comparing the signal with sound signatures corresponding to physiological sounds stored in a first data repository; detecting a physiological event from the processed signal based on the comparison of the signal with the sound signatures; and generating a synthetic physiological sound comprising a first sound corresponding to the generated idealized envelope and a second sound corresponding to a portion of the processed signal with the detected physiological event. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system for generating synthetic physiological sound responsive to a signal detected by an acoustic sensor attached to a patient, the system comprising one or more hardware processors configured to:
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process a signal from an acoustic sensor responsive to a piezoelectric modulation of the acoustic sensor; detect envelope features in the processed signal responsive to a periodic physiological process; generate an idealized envelope based on the detected envelope features; compare the signal with sound signatures corresponding to physiological sounds stored in a first data repository; detect a physiological event from the processed signal based on the comparison of the signal with the sound signatures; and generate a synthetic physiological sound comprising a first sound corresponding to the generated idealized envelope and a second sound corresponding to a portion of the processed signal with the detected physiological event. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A system for generating synthetic physiological sound responsive to a signal detected by an acoustic sensor attached to a patient, the system comprising:
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means for processing signal from an acoustic sensor responsive to a piezoelectric modulation of the acoustic sensor; means for detecting an envelope from the processed signal; means for detecting a physiological event from the processed signal; and means for generating a synthetic physiological sound based on the envelope detection and detected physiological event.
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Specification