Electrical audio signal processing systems and devices – Stethoscopes – electrical
Patent
1995-11-27
2000-02-15
Kuntz, Curtis
Electrical audio signal processing systems and devices
Stethoscopes, electrical
181126, 181131, 181137, 128715, D24134, A61B 704
Patent
active
060261706
ABSTRACT:
An electronic stethoscope emulates the frequency response of a standard acoustical stethoscope in both bell and diaphragm modes, while providing additional features attainable only with an electronic stethoscope, such as signal amplification, noise reduction, wider bandwidth, and mode selection. The electronic stethoscope includes spectrally separate idealized diaphragm and idealized bell modes. The idealized diaphragm mode and the idealized bell mode each include emphasized passbands and de-emphasized passbands. The emphasized passbands are spectrally separate. In addition, the electronic stethoscope also includes a wideband mode, which permits the user to hear high frequency sounds such as those associated with mechanical heart valves, lung sounds, and the like.
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Dieken Alan P.
Dufresne Joel R.
Hulse Daniel V.
Bartingale Kari H.
Griswold Gary L.
Hohenshell Jeffrey J.
Kuntz Curtis
Minnesota Mining and Manufacturing Company
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