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Re: Cubic interpolation

Date1999-01-04 20:22
FromJosep M Comajuncosas
SubjectRe: Cubic interpolation
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.

Great! congratulations!!

> Question: should this code replace oscili (assuming it is correct)?

Not at all. It provides extra precission but oscil and oscili should work
as usual..

> Wouks you prefer oscil3 to work with non-power-of-2-plus-1 tables?

I think power-of-2 tables are ok.

> Question: which other opcodes do you think should use cubic
> interpolation?

Even more necessary than for wavetable oscillators, Id like to see 3rd
order interpolators in *deltapi* for fractional delay waveguides. *delay*
and *delayw* also...Btw why not implement a routine to compute arbitrary
nth-order polynomial interpolators and forget this stuff forever? ;-)