Re: [Audacity-nyquist] Can Fourier series be done with simrep

[David R. S. <dav...@sh...>]

Hi Paul,

The way you configured that looks like you keep adding together (hzosc p) 
and (hzosc q) over and over, the same frequency values. You need to make 
them so they're related to i somehow. For example, instead of (hzosc p) 
you could do something like

(hzosc (* i 100))

You also have to be careful in the sense that your (mult (pwl ...)) comes 
after you have simrep'ed sine waves. So if you add ten sine waves, 
amplitude will be between -10 and +10 - so you'd need to mult the output 
of simrep with at minimum the inverse of n, to prevent clipping.

I hope I understood your question.

David

-- 
David R. Sky
http://www.shellworld.net/~davidsky/


On Tue, 16 Dec 2008, paul beach wrote:

> Fourier series at a glance is here,
>
> http://www.climatehoax.ca/fourier.htm
>
> This will add sine waves, if n = 2 , peak = 0.6
> but I can't simply add (hzosc p)  and (hzosc q).
>
> (mult
> (pwl .1 .3 .4)
> (simrep (i n)
> (hzosc p)
> ;(hzosc q)
> ))
>