[sdiy] Diode filter?

[pH_______]

On 11/9/01 9:50 AM, ">>>marjan<<<" <urekar.m at EUnet.yu> wrote:

> Tim Escobedo wrote:
>> 
>> Snooping around the doepfer site showed this description "available end
>> of 2001 if the copyright problems will be solved":
>> 
>> "A-102: Diode filter (legendary low pass filter design that uses diodes
>> in the filter stage as frequency controlling elements resulting in
>> "strange" resonance behaviour and frequency response, resonance and
>> frequency are not independent)"
>> 
> 
> Hm, would that be acid in a silver box filter? There were many 303
> clones but I don't remember they had problems. Is that Python like
> foot from the groove synth makers squeezing the man?
> EMS VCS filter maybe?
> 
> 

yup- EMS heh! "copyright problems",  this was announced last spring then
went away so at least someone's watching them.

from the Doepfer site:
A-102 Diode Low Pass Filter: reproduction of a modified ladder filter that
uses diodes in the filter stage as frequency controlling elements resulting
in "strange" resonance behaviour and frequency response, resonance and
frequency are not independent). Price about Euro 75.00 (about US$ 75.00),
available about end of 2001 (we still have to clear some copyright problems
with EMS)

-pH