Title :
Harmonic spectrogram for the analysis of semi-periodic physiologic signals
Author :
McNames, J. ; Crespo, C. ; Aboy, M. ; Bassale, J. ; Jenkins, L. ; Goldstein, B.
Author_Institution :
Biomed. Signal Process. Lab., Portland State Univ., OR, USA
Abstract :
This paper describes a simple method that improves the resolution of power spectral density (PSD) estimates of nonsinusoidal semi-periodic signals. This method can also be used to generate time-frequency mappings similar to the spectrogram. This is a useful tool for the analysis of physiologic signals such as the electrocardiogram and blood pressure. Several examples are given of the method applied to biomedical signals.
Keywords :
blood pressure measurement; electrocardiography; fast Fourier transforms; medical signal processing; spectral analysis; time-frequency analysis; ECG analysis; blood pressure recordings; harmonic spectrogram; nonsinusoidal semiperiodic signals; power spectral density estimates resolution improvement; semiperiodic physiologic signals analysis; Biomedical signal processing; Electrocardiography; Frequency estimation; Harmonic analysis; Laboratories; Power system harmonics; Signal analysis; Signal resolution; Spectrogram; Time frequency analysis;
Conference_Titel :
Engineering in Medicine and Biology, 2002. 24th Annual Conference and the Annual Fall Meeting of the Biomedical Engineering Society EMBS/BMES Conference, 2002. Proceedings of the Second Joint
Print_ISBN :
0-7803-7612-9
DOI :
10.1109/IEMBS.2002.1134427
