Doepfer

actually the A143-9 Quadrature LFO makes a near perfect sine.I'm curious
what Dieter's quadrature VCO will sound like!

Ernst


On Sun, Nov 23, 2008 at 10:45 PM, Derek Holzer <derek@umatic.nl> wrote:

>   Hi,
>
> sure, you can never get a perfect sine out of an analog circuit, but the
> AS VCO has a knob which shapes the wave from a sinusoid in the middle to
> a triangular waveform at the edges. If you don't get the knob *exactly*
> in the middle, the wave sounds very angular already. A dedicated sine
> output might have been a better idea to keep more of the buzz out. This
> said, voltage controlled waveshaping is definitely a feature which I
> like most of the time. But I tend to want a fairly clear tone some
> times, and this particular feature set makes it difficult to get. Even a
> center-detent in the pot would have made it easier.
>
> best,
> D.
>
>
> Argitoth wrote:
> > Derek Holzer, I don't know anything about curcuit boards, but isn't
> > the distorted sine problem a design flaw, not a feature flaw? What I
> > mean is, even if that waveshaping knob wasn't included, you probably
> > wouldn't be able to get a less buzzy sine. It just takes a good set of
> > ears to make sure you got the waveshape knob set right. Other
> > oscillators are designed differently and have imperfect sines that are
> > not buzzy, but have some additional harmonics, which is much better
> > than buzzy IMO. I think this is the case with Plan B VCO and Tip Top
> > Audio VCO.
>
> --
> derek holzer ::: http://www.umatic.nl :::
> http://blog.myspace.com/macumbista
> ---Oblique Strategy # 170:
> "Use something nearby as a model"
>
>  
>


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