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System and filter

  1. Nov 28, 2009 #1
    In the context of signal processing, I am curious about what's the relation and difference between system and filter? Are they the same?

    Thanks and regards!
  2. jcsd
  3. Dec 22, 2009 #2
    Yes Dear, a system in DSP can be a filter, and a filter can be use for different types of processing of signal in digital domain. A filter is always represented by a system function in z-transform. Some filters can be just anti-aliasing, while some can be differentiators or integrators. I think it is clear now.
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