[PD] Avoiding clipping with tabread4

[PSPunch]

Hi list,


I hope my repeating questions don't annoy anyone. I've sent a similar
question a while back to [pd-ot] but with out response, have been
thinking over it, found no answer so far.

Although I had never concerned it till recently, I've learned that 4
point interpolation may at times return values less than -1 or greater
than 1 even when the 4 reference points are with in that range.

i.e., having a table of [-1 1 1 -1], an index of 1.5 will return 1.25
with [tabread4]


Are there any common practices to avoid unexpected clipping introduced
by [tabread4] or [tabosc4~] ?

Further more, under what circumstances (what 4 values referred to) will
the returned value exceed the range most?


Thanks in advance..

--
David Shimamoto