From yahoo Sent Mon, Dec 10th 2018, 08:50
You find my answers written inline. Best wishes Dieter Doepfer > So from time to time complaints about the A-137-1 pop up on > Muffwiggler, which made me investigate the module a bit more. > It's clear that it's nearly impossible to get the input signal > back out unaltered, because whatever the settings the signal goes > through 4 folding stages. But no problem, that's why mulitples > and mixers/crossfaders are available. I have to disagree. During workshops I demonstrate the function of the A-137-1 in combination with an oscilloscope. And I usually start with the (nearly) unmodified signal. It's a bit tricky to find the right adjustment of the controls but with the aid of the scops it works. > But I do have a question about http://www.doepfer.de/A137_block.gif > > It shows folding level as "a" and symmetry as "b", and the upper > folding level as "a+b" and the lower level as "a-b". But > shouldn't those limits be "b+a" and "b-a" ? Because if the level > is at its highest the symmetry doesn't really change the output. > If on the other hand the level is 0, there is no signal (apart > from some noisy stuff) that comes out whatever the symmetry settings. > So folding level defines a voltage interval, and that interval > can be shifted up or down with the symmetry. You are right. It's amazing that so far nobody discovered this mistake in the sketch. > Nice combo: VCO -> A-137-1 (with some gentle modulations) -> > A-127+bom -> original/LP/BP/HP signals and come creative panning. I'll have to try that out ... ------------------------------------ ------------------------------------ ------------------------------------ Yahoo Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Doepfer_a100/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/Doepfer_a100/join (Yahoo! ID required) <*> To change settings via email: xxxxxxx_xxxx-xxxxxx@xxxxxxxxxxx.xxx xxxxxxx_xxxx-xxxxxxxxxxxx@xxxxxxxxxxx.xxx <*> To unsubscribe from this group, send an email to: xxxxxxx_xxxx-xxxxxxxxxxx@xxxxxxxxxxx.xxx <*> Your use of Yahoo Groups is subject to: https://info.yahoo.com/legal/us/yahoo/utos/terms/