MOTM

--- In motm@egroups.com, Jeffrey Pontius <jpont@k...> wrote:
> 
> I'm not familiar with the SEM filter, but how about a lp/band/hp 
filter?
> They are just good basic units to have in a system.
> 

For anyone who doesn't know, SEM is the Oberheim Synthesizer Expander 
Module, the earliest Oberheim product. You remember - those little 
white boxes that were designed to hook up to a MiniMoog to expand its
sounds, and later were mounted 4 to a box with a keyboard to become 
the Oberheim 4 Voice.

The filter in the SEM is exactly what you are asking for - a LP/BP/HP 
+ Notch filter, with a 2 pole (12db/oct slope) response. You can
smoothly change from one mode to another by turning a single knob. 
For a MOTM version, it sure would be cool to have voltage control of 
that knob ;>)

Moe