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Function to me implies something with known characteristics. I suppose this is true when performing analytic FTs, but I think signal makes more sense when deali
by aganders3 13y ago
Function to me implies something with known characteristics. I suppose this is true when performing analytic FTs, but I think signal makes more sense when dealing with unknown inputs and numerical solutions. Regardless the relationship (or distinction) should be made clear when learning!
- hmpc 13y agoThis is a good distinction to make. The term "signal" implies an information carrier (as in the expression "the signal in the noise"), which in light of information theory can be interpreted to mean an unknown variation (as modelled by, e.g. a stochastic process). This is philosophically distinct from the interpretation of a mathematical function as analytically defined and completely known.
- ArbitraryLimits 13y agoExcept that EEs like to explicitly restrict the word "signal" to mean only the known inputs, and call the rest "noise."
- napoleond 13y agos/known inputs/desired outputs/ ?