Physiological acoustic monitoring system
AssigneeMasimo Corporation
InventorsAmmar Al-Ali, Sung Uk Lee
Life of this patent
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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.
Claims16
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.
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:
- 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.
A system for generating synthetic physiological sound responsive to a signal detected by an acoustic sensor attached to a patient, the system comprising:
- 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.
Dependencies are inferred from the claim text.