Title :
Modified signal dependent time-frequency representation for analysis of the simulated first heart sound
Author :
Shamsollahi, M.B. ; Senhadji, L. ; Chen, D. ; Durand, L.-G.
Author_Institution :
Lab. Traitement du Signal et de l´´Image, Rennes I Univ., France
fDate :
30 Oct-2 Nov 1997
Abstract :
Describes a modification of the Signal Dependent Time-Frequency Representation (SDTFR) developed by Baraniuk and Jones (1993) in order to applying it to a simulated first heart sound signal composed of a rising chirp and two damped sinusoid components. This modification is performed by introducing an additional constraint on the design of the kernel to emphasize a specific section of the ambiguity plane. The result of this improved method is compared to those obtained by the SDTFR and the Wigner-Ville distribution of the simulated S1
Keywords :
acoustic signal processing; bioacoustics; cardiology; medical signal processing; time-frequency analysis; Wigner-Ville distribution; ambiguity plane section emphasis; damped sinusoid components; kernel design; modified signal dependent time-frequency representation; rising chirp; simulated first heart sound analysis; Amplitude modulation; Analytical models; Chirp; Heart; Hydrogen; Kernel; Myocardium; Pins; Signal analysis; Time frequency analysis;
Conference_Titel :
Engineering in Medicine and Biology Society, 1997. Proceedings of the 19th Annual International Conference of the IEEE
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-4262-3
DOI :
10.1109/IEMBS.1997.756617
