Title :
Time-frequency subspaces and their application to time-varying filtering
Author :
Hlawatsch, F. ; Kozek, W. ; Krattenthaler, W.
Author_Institution :
Inst. fuer Nachrichtentech. und Hochfrequenztech., Tech. Univ. Wien, Austria
Abstract :
A method is presented for time-frequency filtering, i.e. filtering with pass and stop regions directly defined in the time-frequency plane. The filtering is performed by projecting the input signal on a time-frequency signal subspace corresponding to the time-frequency pass region prescribed. This projection takes the form of a linear time-varying filter where the filter´s impulse response is constructed using Wigner distribution signal synthesis techniques
Keywords :
filtering and prediction theory; frequency-domain analysis; signal synthesis; time-domain analysis; time-varying systems; Wigner distribution signal synthesis; filter impulse response; time-frequency signal subspace; time-varying filtering; Band pass filters; Filtering; Filtering algorithms; Frequency response; Interference; Nonlinear filters; Passband; Signal analysis; Signal synthesis; Strips; Time frequency analysis;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1990. ICASSP-90., 1990 International Conference on
Conference_Location :
Albuquerque, NM
DOI :
10.1109/ICASSP.1990.115731
