Relatively simple low-pass-filtering algorithm suppresses high-frequency noise in digitally sampled signal. Algorithm derived from convolution of signal with causal exponential. Filter implemented by algorithm does not introduce phase shift. Algorithm applies forward convolution in time followed by backward convolution in time, and phase shift in second convolution cancels phase shift in first convolution.
Digital Low-Pass Filter Without Phase Shift
NASA Tech Briefs ; 17 , 7
01.07.1993
Sonstige
Keine Angabe
Englisch
Timing signal propagates without phase shift
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