Title :
Time-frequency analysis of Korotkoff sounds
Author :
Allen, J. ; Murray, A.
Author_Institution :
Dept. of Regional Med. Phys., Freeman Hospital, Newcastle upon Tyne, UK
Abstract :
The aims of this work were to determine if the exponential distribution can be implemented in order to study the time-frequency behaviour of Korotkoff sounds, and also to identify key features in each of the different phases of the Korotkoff sounds. It was found that, in this evaluation study, the running window exponential distribution time-frequency approach shows promise for studying the time-frequency behaviour of Korotkoff sounds, and also for identifying key features in each of the different phases of the Korotkoff sounds. Further work is now needed to evaluate the technique when applied to a larger number of volunteers, to optimise protocols for Korotkoff sound recording, and to assess different approaches in time-frequency distribution visualization
Keywords :
bioacoustics; Korotkoff sounds analysis; biomedical signal analysis; brachial artery; key features identification; medical acoustics; protocols optimization; running window exponential distribution time-frequency approach; stethoscope; time-frequency distribution visualization; volunteers;
Conference_Titel :
Time-Frequency Analysis of Biomedical Signals (Digest No. 1997/006), IEE Colloquium on
Conference_Location :
London
DOI :
10.1049/ic:19970033