[sdiy] complex waveforms

[anthony]

----- Original Message ----- 
From: "Don Tillman" <don at till.com>


>   > From: "anthony" <aankrom at bluemarble.net>
>   > Date: Sat, 22 Jan 2005 14:43:21 -0500
>   >
>   > What I'm looking for is a sort of half-hypertriangle - both sides
>   > (not at the same time but selectable).
>
> I have no idea what this means.

I meant to explain what I meant but I forgot to. Basically it would be like 
a logarithmic ramp or a logarithmic saw.
Kind of like the waveform from a UJT relaxation osc. that has the attack 
shape inverted - if that makes sense.

I refered to it as a half-hyper-triangle because that was a waveform that 
was being used to modulate a BBD in a flanger.

>   > But thinking about that made me think of other complex waveforms
>   > as well.  Things like trapezoid,
>
> http://www.till.com/articles/QuadTrapVCO
>
> This isn't just a trapezoid wave, it's a trapezoid-core VCO.  I'm the
> guy who thinks these can do many things that sawtooth- and
> triangle-core VCO's can't.

I've seen this and liked it a lot. It was part of the inspiration for this 
post. I gave it a cursory glanced and was very impressed so I earmarked it 
to read in depth later. Now I am about to do just that.

>  -- Don
>
> -- 
> Don Tillman
> Palo Alto, California
> don at till.com
> http://www.till.com
>
>