--- In
Doepfer_a100@yahoogroups.com
, "nicholas_kent"
<nicholas_kent@...> wrote:
>
> So far I've just played with it by ear.
>
> But I'm curious if anyone has already worked out tables or a
formula to center any one of the
> BP filters on a particular Hz. frequency.
>
> I was kind of annoyed the that doc for the A-127 reprints a table
from the Allen Strange book
> but doesn't list any approximate VCF Freq. knob settings nor
voltage amounts to set the filter
> to those frequencies.
hello nicolas,
it's a bit difficult to determine the exact knob settings,
as these can slightly differ from module to module.
the simplest way is to hook up a spectrum analyser
and doing a measurement. those formant frequencies are
approximations anyway, you don't have to hit the exact
frequencies to get good results. the table in the
manual should be understood as a hint for own experiments.
maybe i can do some measurements for you during the next
days, i'll post the approximate knob settings then.
best wishes
ingo