[Application of time-frequency analysis on medical signal processing].
The frequency content of many biomedical signals can change rapidly with time. Conventional Fourier spectral analysis techniques are insufficient for analyzing the time-varying spectral content of these signals. By mapping a one-dimensional function of time(or frequency), the time-frequency representation can localize the signal energy in both the time and frequency directions. It has been shown that many biomedical signal problems may benefit from time-frequency analysis. The basic method of time-frequency analysis and its application in biomedical signals processing are introduced.
Chai
X
X
Department of Biomedical Engineering, Shanghai Jiaotong University, Shanghai 200030.
Wu
Z
Z
Zhuang
T
T
D000465:Algorithms; D004562:Electrocardiography; D004569:Electroencephalography; D004576:Electromyography; D005583:Fourier Analysis; D012815:Signal Processing, Computer-Assisted; D013997:Time Factors