An New Filtering Methods in the Wavelet Domain for Bowel Sounds

Bowel sounds signal (BS) is one of the important human physiological signals, analysis of the BS signal can then study gastrointestinal physiology and implement direct and effective diagnosis of gastrointestinal disorders. Use different threshold denoising methods denoising the original bowel sounds, simulated in the environment of MATLAB, then compared the denoising results and analyzed the advantages and disadvantages of those threshold denoising methods. Keywords-bowel sounds; de-noising; wavelet transform; threshold

[1]  W. Marsden.  I and J , 2012 .

[2]  Chen Li-ding.  Study of signal denoising methods based on wavelet transform , 2010 .

[3]  Rainer Raupach,et al.  Wavelet Based Noise Reduction in CT-Images Using Correlation Analysis , 2008, IEEE Transactions on Medical Imaging.

[4]  P. Cochat,et al.  Et al , 2008, Archives de pediatrie : organe officiel de la Societe francaise de pediatrie.

[5]  Chen-Fu Chien,et al.  Data mining to improve personnel selection and enhance human capital: A case study in high-technology industry , 2008, Expert Syst. Appl..

[6]  George Kalliris,et al.  Bowel-sound pattern analysis using wavelets and neural networks with application to long-term, unsupervised, gastrointestinal motility monitoring , 2008, Expert Syst. Appl..

[7]  M. Fereniec,et al.  Wavelet Denoising for Multi-lead High Resolution ECG Signals , 2007 .

[8]  Jing Hu,et al.  Denoising Nonlinear Time Series by Adaptive Filtering and Wavelet Shrinkage: A Comparison , 2010, IEEE Signal Processing Letters.

[9]  L. Hadjileontiadis,et al.  Wavelet-based Analysis of Nocturnal Snoring in Apneic Patients Undergoing Polysomnography , 2007, 2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society.

[10]  Didier Wolf,et al.  Digestive Activity Evaluation by Multichannel Abdominal Sounds Analysis , 2010, IEEE Transactions on Biomedical Engineering.

[11]  Wang Xi-long.  Study on Adaptive Filter and Methods of Bowel Sounds Features Extraction , 2009 .

[12]  Z. Ge,et al.  Purgative Bowel Cleansing Combined With Simethicone Improves Capsule Endoscopy Imaging , 2008, The American Journal of Gastroenterology.

[13]  L. Hadjileontiadis,et al.  Classification of Transmembrane Segments in Human Proteins Using Wavelet-based Energy , 2007, 2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society.