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Where's the Linear Interpolator (ADAU1701)?

Question asked by KJBob on Sep 8, 2016
Latest reply on Nov 30, 2017 by Artifex

     A SigmaStudio project for a product we've been developing for awhile uses several Linear Interpolator blocks for linearizing gain controls and such, placed with an older version of SigmaStudio.  One of them is shown below:


Funny thing is, I cannot find this block in the current Beta version.  Although the wiki says it's still around:



Now, the closes thing I can find is an Index LUT with selectable integer / fractional input and output, which I suppose has replaced the Linear Interpolator.  However, it lacks the Linear Interpolator's graph, and I'm not sure if it works the same way:



And so I'm wondering:

  • Is the Linear Interpolator still included and I'm just missing where it is?
  • If not, can I still leave this block in my existing projects (they load OK in version 3.13.1, but I have not tried compiling)?
  • Can the newly designed Index Lookup Table perform a similar function?


Other cores such as the -1761 and the -1452, still have the Linear Interpolator intact.  What gives?





    Thanks, Bob