MOTM

At 10:27 AM -0500 08/23/01, Paul Schreiber wrote:
>
>Of course, the MOTM version is DIFFERENT than Moog's and Oakley's. How
>so???! Errr...NOT TELLING.
>
>Just have to trust me...have the Filter Gods (JH/PTS) ever dissappointed :)

It would have to be noticeably different, otherwise you are going to get
all of these people complaining that it doesn't sound exactly like the Moog
filter.  This is because the various Moog filters sound different, and no
one "clone" can be made to sound exactly like all of them.  Even Mini Moogs
vary amongst themselves.  I'm guessing this due to the availability of
different parts over the years or different tolerances in transistor
matching when they were built.  Nevermind the coloration of the VCA
following the VCF when patching the Mini Moog as a "stand alone" filter.

>Filters are based on mathematical polynomials. You aren't going to get a
>'new' polynomial. What you get
>are different ways to implement them. 95% of the time, it's the parts
>themselves that make a difference.

You obviously know much more about this than I do, but looking at filters
as an end-user, it seems that existing filter designs may be improved
significantly by adding new controls such as variable mode, variable slope,
variable width, switchable feedback paths, VC resonance, etc.