Journal
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
Volume 146, Issue 3, Pages 1769-1773Publisher
ACOUSTICAL SOC AMER AMER INST PHYSICS
DOI: 10.1121/1.5126226
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Funding
- Polish National Centre for Research and Development (NCBiR) [LIDER/034/037/L-5/13/NCBR/2014]
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Stethoscopes are used to transmit body sounds related to various physiological processes to ears of a physician, providing basic or supportive information for eventual diagnosis. Unfavorably, the dominant frequency components of most of the auscultation signals are localized close to the lower frequency limits of the human auditory system, restricting the achievable selectivity and specificity. The present study introduces an approach that aims at overcoming the existing limitations. A signal processing scheme utilizing knock rejection, dynamic compressor, and pseudo-stereo synthesizer blocks is described, along with hardware implementation and results of the initial subjective evaluation.
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