MOTM

Hi All !

As this came up again, i checked my downloaded schematics, and found 
the MS20 ones, downloaded dec97, so no URL :) (anyone ?)

Surely enough, this has the same characteristics as the MS50, but the 
normal out goes to the VCA (no ext out) .  The "sustain at 0v" one 
goes to the filter (no ext out either), and the inverse of this is on 
the patch panel .  Circuitry is simple enough, two opamps (4558) and 
8 resistors (plus PS decoupling, i suppose) .  It's on the 
ms20_pg4.gif in the 885kb .zip, bottom left .

When plugging in such an env, one is guaranteed that the sustain will 
not affect the sound of the patch, as it is a 0V .  With the sustain 
knob at 0 one gets a positive AD envelope, no release .  Sustain at 
10 gives an ASR envelope, only subtracting something from the set 
point .  When modulating the filter cutoff, for ex, this means one 
does not have to touch the freq when increasing the mod amount to get 
back to the same sustained sound .  And this is even more important 
on pitch, no retuning here .  Very useful, as i said .

Bye for now .


Keep 'em oscillating :)


Hugo
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