Title :
Time-frequency analysis of heart rate time series
Author :
Naidu, V.P.S. ; Mahalakshmi, P.
Author_Institution :
Dept. of ECE, Vellore Inst. of Technol., India
Abstract :
Time-frequency distribution techniques viz., STFT, WVD and CWT were studied using simulated HRTS data. It is concluded that CWT showed better performance in time-frequency representation. This technique is extended to compute the real HRTS. It is observed from the CWT spectrum that more power is concentrated in low frequency region in MI patients and vice versa in case of normal subjects.
Keywords :
Fourier transforms; cardiology; medical signal processing; signal representation; time series; time-frequency analysis; wavelet transforms; continuous wavelet transform; heart rate time series; short time Fourier transform; time-frequency representation; Autonomic nervous system; Cardiology; Continuous wavelet transforms; Fourier transforms; Heart rate; Heart rate variability; Resonant frequency; Signal analysis; Time frequency analysis; Time series analysis;
Conference_Titel :
TENCON 2004. 2004 IEEE Region 10 Conference
Print_ISBN :
0-7803-8560-8
DOI :
10.1109/TENCON.2004.1414395
