maybe it's worth to calculate the cosine directly by math.h function 
call, since in modern CPUs such operation is often faster than a table 
read (espcially if you are using interpolation) and it is much more precise.

Gab

Alex Norman wrote:
> Hello,
> I'm new to this list.
> Recently I've been developing some unit generators to read data and 
> synthesize from analysis files made by ATS: 
> http://www-ccrma.stanford.edu/%7Ejuan/ATS.html
> 
> Anyways I'm currently using a cosine f table to modulate noise bands into 
> the correct place in the frequency spectrum, my opcode needs the user to 
> provide an ftable but since it wouldn't be reasonable to use anything 
> other than a cosine I figure I should try to make it so that the opcode 
> creates the ftable itself (and so the user doesn't have to).
> 
> I'm wondering, can anyone point me to an opcode that does this? 
> (internally defines an ftable and uses it), or give me some advice?
> 
> It looks like I need to use the functions in fgens.c but the documentation 
> is not very thorough.
> 
> After this and a few more tests I should be able to make these opcodes 
> available :)
> 
> Thank you,
> Alex Norman
> University of Washington
> 
> 


-- 
Gabriel Maldonado
http://csounds.com/maldonado
--