excellent !!!!
merci de vos avis éclairés !
Impossible , il lui faudrait une entrée cv dédiée pour ce faire...Par contre lorsqu'on utilise l'enveloppe 1 comme oscillateur, est il possible de le piloter par cv de façon stable ?
...bon vous allez dire que je "bloque" un peu sur le Korg en ce moment, mais justement c'est à cause de ça que je viens de découvrir un "tip" , qui vient sûrement d'un défaut de conception ... je me suis aperçu complètement par hasard que la sortie triangle du LFO du MS20 pouvait être utilisée en entrée pour être modulée par un autre LFO extérieur, bon ça ne module pas la vitesse (dommage) mais seulement l'intensité, étonnant, non ? ça marche avec tous les lfo, une ms-04, la sortie lfo d'une moogerfooger ...
ça peut servir .
maxime_bd a écrit :Cette solution traîne depuis longtemps sur les forums. Elle permettrait de piloter un Ms-20 avec un sequencer ou un clavier qui sort du v/oct :
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"I can hardly believe no one knows about this already. It is possible to control an MS-20 from a V/Octave keyboard or MIDI/CV converter without a special interface. If you don't believe it, try it . .
When I first got my MS-20, I noticed that the filters don't track the keyboard at all. I plugged the keyboard cv to the filter cv in, but then the filter tracked the keyboard slowly in the lower octave, then went screeching off in search of tweeters to kill! I soon realised that the filter was tracking exponentially. I looked at the schematics and sure enough, both the VCO's and the VCF's have exponential converters on the modulation inputs. (You can tell this is the case, because the synth also goes radically out of tune when you plug the kbd cv to the TOTAL input, and wind up the MG / T.EXT knob in the FM section.)So, if you stick a V/OCT input into the modulation inputs and adjust the MG level for correct scaling, it all works and the filters track too.
Here's how you do it:
1. Plug the performance wheel into the keyboard cv input (middle, right) to disconnect the keyboard.
2. Plug the V/OCT cv from your MIDI/cv converter or another synth into the Total jack (top left).
3. Plug the s-trig. from your MIDI/cv or synth into the MS-20 trigger input.
4. Play a note on your MIDI keyboard or the controlling synth, and adjust the MS-20 performance wheel until you get a sensible pitch.
5. Adjust the VCO mod. levels until playing an octave on your MIDI (or other synth) keyboard gives an octave out of the MS-20. Then adjust the MS-20 performance wheel to coarse tune the MS20 and use the tuning pot to fine tune it.
6. The filter mod level pots adjust filter tracking in the same way.
You lose use of the performance wheel on the MS-20, but that's not a big problem if your MIDI/cv converter or your other synth has pitch bend. You will need a v-to-s trigger converter (i.e. the MS-02 Interface) to control the MS-20 from synths without s-trig. outputs, but they're simple to make (two resistors and an NPN transistor, plenty of circuits posted elsewhere).
I don't have the MS-20 in front of me, so apologies if the names of pots and jacks are not exact. Believe me, it does work!"
(from Steve Ridley)