[PD] tabread4~ "broken" interpolation algorithm - was Re:, Max Smoother Audio than Pd?

[Matteo Sisti Sette]

Is it really possible to express a cubic interpolator (such as Lagrange 
or Hermite, i.e. such as tabread4 or tabread4c) in terms of impulse 
response? Is it equivalent to a convolution? That is to ask: is it linear???
Or is that an approximation?

-- 
Matteo Sisti Sette
matteosistisette at gmail.com
http://www.matteosistisette.com