how much better is the cubic interpolation?  what is the current method of
interpolation?  and what kind of speed difference are we talking about?

pete



J.P.Fitch@bath.ac.uk wrote:

> Message written at 4 Jan 1999 16:35:01 +0000
>
> I have added to my experimemtal system a family of opcodes which are
> like oscili except that they use cubic interpolation.  If anyone withs
> to experimemt with these I can provide SGI, Linux or PC versions, or
> of course code.  I am not totally sure that the code is correct in all
> cases but it seems OK.  At present I have called this family oscil3
> for cubic.
>
> Question: should this code replace oscili (assuming it is correct)?
> Wouks you prefer oscil3 to work with non-power-of-2-plus-1 tables?
> That woudl slow it down a bit more.
>
> Question: which other opcodes do you think should use cubic
> interpolation?  Adjusting an opcode is not trivial, and certainly is
> much slower.  I am willing to do some more opcodes, but I woudl prefer
> a priority order -- or promises that people with do teh adjustments
> AND SEND BACK THE CODE.
>
> Question: is cubic needed?  What about using quadratic interpolation?
>
> ==John ff
>
> PS Happy new year