Time–Frequency Domain Analysis of the Acoustic Bio–Signal--Successful Cases of Wigner Distribution Applied in Medical Diagnosis--

Jun HASEGAWA
Kenji KOBAYASHI

Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E77-A    No.11    pp.1867-1869
Publication Date: 1994/11/25
Online ISSN: 
DOI: 
Print ISSN: 0916-8508
Type of Manuscript: Special Section LETTER (Special Section of Letters Selected from the 1994 IEICE Spring Conference)
Category: 
Keyword: 
acoustic bio–signal,  Wigner distribution,  local moment,  intracranial vascular deformations,  prosthetic valve,  

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Summary: 
By applying Wigner distribution, which has high time resolution and high random noise reducing capability, to the acoustic bio–signals, the possibility of early diagnosis in both intracranial vascular deformation and prosthetic cardiac valve malfunction increased. Especially in latter case, 1st–order local moment of the distribution showed its effectiveness.