[sdiy] How does 3320 sound as hipass/bandpass

[patchell]

Grant Richter wrote:

> > I have never liked the 3320 as an lpf and since
>
> Now here is a perfect example of personal taste in action.
>
> I personally prefer the CEM3320 to the transistor ladder type. The CEMs are
> more linear and do not produce distortion like the ladder type. If I want
> distortion, I prefer to add it deliberately and not be stuck with it.
>
> By definition, a filter is supposed to be a linear device. If they add
> significant distortion (non-linearity), they should be called a "frequency
> shaping distortion device" and not a filter ;^)
>
> In practice, musicians prefer a filter with more distortion, so they say
> they are "better". An engineer would consider a filter with more distortion
> as "worse".
>
> That has confused me for a long time.

    This has confused me for a long time (still does).  If the filter is going
to add distortion, there should be some way of controlling it.  I considered
using a pair of multipliers to generate ax**3 + bx**2 where a and b are
adjustable paramters and put it in the loop of a very linear filter so that I
could control the distortion...but, have never gotten around to it...

--
 -Jim
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