[sdiy] Measuring filter response

[David G Dixon]

> > I suppose another problem is that one should actually use an 
> > exponential voltage ramp, in order to see the log response.
> 
> Which makes a musical VCO with sine quite useful for the 
> task. Rather clean sine is preferred. Stable amplitude vs. 
> frequency can become an issue which is not normally considered.

Of course.  That's what I meant (slaps forehead).