If you write an UDO, you can use a "local" ksmps=1, so you don't have
to run everything at such a high k-rate.
Oeyvind

2008/7/7, Joseph Sanger <joseph.sanger@virgin.net>:
> Thanks everyone for all of your replies, they've clarified matters
> considerably (and given me a more in-depth knowledge of csound's
> internals!). I'll check out downsamp and interp as well, to see if they seem
> more appropriate.
>
> Thanks again,
>
> Joe
>
>
> John Lato wrote:
> >
> > Joseph Sanger wrote:
> >
> >  > 2. Is there another opcode which I've overlooked? Like the 'a' opcode,
> >  > but in reverse; something which simply copies the a-rate variable to
> >  > k-rate every ksmps, without averaging or finding the maximum.
> >
> > In general this isn't possible.  Since an a-rate variable is an array of
> data (with length ksmps), it's clear that to convert from a-rate to k-rate
> you need some sort of aggregating function (e.g. calculate the average or
> maximum).  In the special case of ksmps=1 aggregating is unnecessary, but
> both averaging and taking the maximum would return the same value then
> anyway, so it doesn't make any difference.
> >
> > I agree this can seem inelegant to many csound users, but if you think of
> how the orchestra is interpreted by csound it should be clear.
> >
> >  >
> >  > 3. Is there any reason why 'if' can't be made to accept a-rate
> variables
> >  > in the (near!) future?
> >  >
> >
> > I can think of several.  Again, understanding that an a-rate variable is
> really an array should make it clear.  Csound operates at the k-rate.  'if'
> accepting a-rate variables only makes syntactic sense in the case of
> ksmps=1, all other values would mean creating separate execution paths
> within a single a-variable array.  I doubt that could be implemented in any
> fashion that doesn't defeat the purpose of the k-rate (which means that
> ksmps=1 is what you really want anyway).
> >
> > Working at ksmps=1, I would use max_k as you are already.  Downsamp and
> interp are other options.
> >
> > John W. Lato
> > Sarah and Ernest Butler School of Music
> > The University of Texas at Austin
> > 1 University Station E3100
> > Austin, TX 78712-0435
> > (512) 232-2090
> >
> >
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> >
> >
>
>
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