Title :
Bowel-sound signal enhancement using adaptive filtering
Author :
Mansy, Hussein A. ; Sandler, Richard H.
Author_Institution :
Sect. of Pediatric Gastroenterology, Rush-Presbyterian St. Luke´´s Med. Center, Chicago, IL, USA
Abstract :
We hypothesized that computerized analysis of gastrointestinal acoustic phenomena (GAP) may provide an accurate, rapid, safe, and inexpensive method of diagnosing a wide range of gastrointestinal conditions. Adaptive filters (AFs) and other conventional signal-processing techniques were employed for heart-sound (HS) cancellation. The objective was to remove HSs with minimum GAP distortion. After an overview of AF applications in biomedicine, we review our methods for HS removal in the laboratory and we discuss the results of the study.
Keywords :
acoustic correlation; acoustic noise; adaptive filters; adaptive signal processing; bioacoustics; cardiology; medical signal processing; adaptive filtering; adaptive filters; biomedicine; bowel-sound signal enhancement; computerized analysis; gastrointestinal acoustic phenomena; gastrointestinal condition diagnosis; heart-sound cancellation; laboratory; minimum GAP distortion; signal-processing techniques; Acoustic measurements; Acoustic noise; Adaptive filters; Animals; Biomedical measurements; Electrocardiography; Gastrointestinal tract; Heart; Interference; Noise cancellation; Algorithms; Animals; Auscultation; Diagnosis, Differential; Heart Sounds; Intestines; Rats; Rats, Sprague-Dawley; Respiration; Signal Processing, Computer-Assisted;
Journal_Title :
Engineering in Medicine and Biology Magazine, IEEE
