Physiological acoustic monitoring system
First Claim
1. An acoustic monitoring system comprising:
- an acoustic sensor configured to detect heart sounds from a patient;
an analog to digital converter configured to digitize an acoustic sensor signal generated from the acoustic sensor corresponding to the detected heart sounds from the patient;
a decimation filter and mixer configured to reduce the data rate of the digitized acoustic sensor signal and output a digitized raw audio signal; and
a hardware processor configured to;
receive the digitized raw audio signal generated from the acoustic sensor corresponding to the detected heart sounds from the patient;
detect an envelope in the received acoustic sensor signal;
convert the envelope into a tag representing idealized envelope;
determine a heart rate from the digitized raw audio signal; and
transmit the heart rate and the tag over a data channel in lieu of the digitized raw audio signal.
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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.
1118 Citations
20 Claims
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1. An acoustic monitoring system comprising:
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an acoustic sensor configured to detect heart sounds from a patient; an analog to digital converter configured to digitize an acoustic sensor signal generated from the acoustic sensor corresponding to the detected heart sounds from the patient; a decimation filter and mixer configured to reduce the data rate of the digitized acoustic sensor signal and output a digitized raw audio signal; and a hardware processor configured to; receive the digitized raw audio signal generated from the acoustic sensor corresponding to the detected heart sounds from the patient; detect an envelope in the received acoustic sensor signal; convert the envelope into a tag representing idealized envelope; determine a heart rate from the digitized raw audio signal; and transmit the heart rate and the tag over a data channel in lieu of the digitized raw audio signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An acoustic monitoring system comprising:
a hardware processor configured to; generate an audio signal based on an acoustic sensor signal received from an acoustic sensor corresponding to heart sounds from a patient; detect an envelope in the received acoustic sensor signal; convert the envelope into a tag representing idealized envelope; and transmit the tag over a data channel in lieu of the audio signal. - View Dependent Claims (10, 11, 12, 13, 14)
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15. An acoustic monitoring method comprising:
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generating an audio signal based on an acoustic sensor signal received from an acoustic sensor corresponding to heart sounds from a patient; detecting an envelope in the received acoustic sensor signal; converting the envelope into a tag representing idealized envelope; and transmitting the tag over a data channel in lieu of the audio signal. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification