[sc-dev] Re: error in COsc help

[Sam Potter <sfp@xxxxxxx>]

On 12/05/2014 06:29 PM, Rohan Drape wrote:
> > "Due to summing, the peak amplitude is twice that of the wavetable."
> >
> > But this isn't true
>
> ?
>
> b = Buffer.alloc(s, 512, 1, {arg n; n.sine1Msg(1)});
> {COsc.ar(b, 100, 5)}.plot(0.1);

I think in your example the max over the period is approx. 1.994, 
actually, not 2. I didn't check this analytically, but I subdivided one 
of the resultant signal's periods into 200 million pieces and took the 
max of the abs of the discretized signal in Matlab... So, pretty confident

Please try my original example (in your style):

b = Buffer.alloc(s, 512, 1, { |n| n.sine1Msg(1) });
{ COsc.ar(b, 1, 1) }.plot(2)

There are plenty of other egregious examples

Anyway, the point is that the statement is not true in general, so it 
may be misleading for people


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