Title :
On variance based methods in computer-aided phonocardiography
Author :
Gavrovska, Ana M. ; Paskas, Milorad P. ; Reljin, Irini S. ; Reljin, Branimir D.
Author_Institution :
Sch. of Electr. Eng., Univ. of Belgrade, Belgrade, Serbia
Abstract :
New trends in cardiosignal processing show that local fluctuations of the signals may reveal important information for computer-aided analysis. Even though the calculation of variance as a global measure is valuable, variation described locally and in one or more scales can represent a convenient way to describe details found in a signal. In this paper, several experimental results obtained using variance based methods, such as local variance estimation and multifractal detrended fluctuation analysis (MF-DFA), are discussed in interpreting phonocardiograms and their content. The experiments show promising results for computer-aided phonocardiography that can be implemented at low cost.
Keywords :
medical signal processing; phonocardiography; MF-DFA; cardiosignal processing; computer-aided analysis; computer-aided phonocardiography; global measure; local fluctuations; local variance estimation; multifractal detrended fluctuation analysis; phonocardiograms; variance based methods; Computers; Educational institutions; Fluctuations; Fractals; Heart; Phonocardiography; Standards; Detrended fluctuation analysis; envelope; phonocardiography; self-affinity; variance;
Conference_Titel :
Neural Network Applications in Electrical Engineering (NEUREL), 2014 12th Symposium on
Conference_Location :
Belgrade
Print_ISBN :
978-1-4799-5887-0
DOI :
10.1109/NEUREL.2014.7011445