October 2021
Intermediate to advanced
370 pages
10h 41m
English
book
Practical Biomedical Signal Analysis Using MATLAB®, 2nd Edition
by Katarzyna J. Blinowska, Jarosław Żygierewicz
Content preview from Practical Biomedical Signal Analysis Using MATLAB®, 2nd Edition
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3Single Channel (Univariate) Signal
3.1 Filters
Signals may contain many frequency components. Some of them may be of interest, like frequency bands of EEG rhythms; others, like power line artifacts, may be undesired. To remove the unwanted part of the spectral content of the signal one usually uses filters. In order to be implementable the filter must be causal. That is, the filter response must only depend on the current and past inputs. If the filter has to depend also on the past outputs it still can be causal by introducing the feedback with appropriate delays.
We shall discuss here only the digital filters implemented in software (not the hardware electronic devices used, e.g., as anti-aliasing filters ...
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