2 Replies Latest reply on Aug 29, 2012 5:26 PM by DaKn_263916

    Filter Wizard


      The nomenclature on plots is confusing.




      "Nominal" should be changed to "desired" or "ideal"




      "Expected" should be changed to "PSOC actual" or "PSOC result".




      Regards, Dana.

        • 1. Re: Filter Wizard



          The vocabulary is a problem.


          "Ideal" is in the eye of the beholder. I'll still think "nominal" is the most accurate description. 


          "Expected" is what you expect to get using the available capacitor ratios. Note that the attenuation on the high frequency side is not quite down to the "nominal" level. "PSoC actual" is a better choice, as long as the user accepts that there may be some small variation from the curve. I'll change it in the next release.


          ---- Dennis

          • 2. Re: Filter Wizard

            "ideal" is a direct result of defining transfer function, its pole/zero locations, etc.. When one


            speaks of Butterworth, Cheby, Elliptiec there is generally speaking a universal understanding


            of what will result, response curves, impulse response, phase, etc.. of the ideal components.




            So I think the "eye of the beholder" analogy should not apply to a textbook response


            of ideal components, which pretty much is all the available software filter design tools


            basis. Spice excepted of course, where one can model the non ideal behaviour of


            components, escpecially caps.




            Regards, Dana.