Title :
Recursive time-frequency methods for dynamic systems
Author :
Dalianis, S.A. ; Hammond, J.K. ; Cambourakis, G.E.
Author_Institution :
ISVR, Southampton, UK
Abstract :
Conventional methods using the time or frequency domain individually have limitations in many applications. The present study investigates methods of analysing the two domains jointly and applies this in system modelling. Time frequency distributions are investigated considering applications in time variant environments. A method has been developed using recursive filters in bands, providing easy to interpret information about time localisation of spectral events. Stationary and nonstationary cases can be represented. Processing in the joint domains enables detailed modifications of the original signal
Keywords :
filtering theory; frequency-domain analysis; recursive filters; spectral analysis; time-domain analysis; time-frequency analysis; dynamic system; frequency domain; nonstationary cases; recursive filters; recursive time-frequency methods; spectral events; stationary cases; system modelling; time domain; time frequency distributions; Convolution; Filtering; Finite impulse response filter; Fourier transforms; Signal analysis; Signal processing; Spectrogram; Time domain analysis; Time frequency analysis; Transfer functions;
Conference_Titel :
Digital Signal Processing Workshop, 1994., 1994 Sixth IEEE
Conference_Location :
Yosemite National Park, CA
Print_ISBN :
0-7803-1948-6
DOI :
10.1109/DSP.1994.379842
