All performance statements in Csound run at the k-rate. If you
are producing or consuming an a-rate variable, then you take
a whole block of samples instead of a single one.

In your case,

apos = apos + astep

will be run as a loop like this one

for(i=0; i < ksmps; i++) apos[i] = apos[i] + astep[i];


But that loop will be called once every k-period (thus running
at the k-rate). Sometimes it's worth looking at a csound instrument
as having an implicit perf loop that runs at k-rate, updating all the
variables every time it iterates. The init variables of course are not
touched by this.


Victor



> the curious, I thought that apos = apos + astep would be updated at the 
> a-rate, but it is actually done at the k-rate.
>
> -- 
>  Mark
>  _________________________________________
>  When you get lemons, you make lemonade.
>  When you get hardware, you make software.
>
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