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tutorial
 Digital Filter Tutorial at National Instruments
A filter that is built by converting the analog signals to digital values, and then implementing the filter using digital circuits, such as delay lines, accumulators, and feedback elements.
Digital filtering involves the inherent inter-linking between modulation and signal filtering.
Whether you are in the analog or digital domain, most often modulation operations will not properly function if they are not (usually) preceded, combined...
preview:
http://zone.ni.com/devzone/cda/tut/p/id/948
12/12/2008
Tags: filters
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