Bozo Tomas

Work place: Faculty of Mechanical Engineering and Computing, University of Mostar, Matice hrvatske bb, 88000, Mostar, Bosnia and Herzegovina



Research Interests: Speech Synthesis, Speech Recognition, Computer systems and computational processes


Bo┼żo Tomas received Bsc. MSc and Ph.D. degrees at the University of Zagreb, Faculty of Electrical Engineering and Computing in the field of electroacoustics. From 2003. he works at the University of Mostar, Faculty of Mechanical Engineering and Computing (FSR Mostar) as an assistant, 2009. became an Assistant Professor and since 2016. as an Associate Professor. His research areas are speech and biomedical signals (acoustics heart sounds and EKG)

Author Articles
Graphic Representations and Frequency Parameters of Heart Sound Signals

By Bozo Tomas Darko Zelenika Zeljko Roncevic

DOI:, Pub. Date: 8 Jul. 2018

Sounds produced by acoustic activity of the heart are series (sequences) of quasi-periodic events which are repeated throughout life, one period (cycle) of these events lasts less than one second. The advancements in technology have enabled us to create various tools for audio and graphic representations of these events. Physicians, by using such tools, can more accurately determine diagnosis by interpretation of heart sound and/or by visual interpretation of graphic displays of heart sounds. This paper presents frequency parameters and graphic illustrations of heart sound signals for two groups of heart murmurs: innocent Still’s murmur and pathologic heart murmur of Ventricular Septal Defect (VSD). Also, on behalf of the frequency analysis of acoustic cardiac signals with Still’s murmur was given a medical explanation of cause and origin of Still’s murmur.

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