Kommentare zu: Doepfer A-106-5 SEM Filter example http://blog.andreaskrebs.de/2010/05/08/doepfer-a-106-5-sem-filter-example/ Sat, 19 May 2012 07:43:45 +0000 http://wordpress.org/?v=2.2.1 Von: Andreas Krebs http://blog.andreaskrebs.de/2010/05/08/doepfer-a-106-5-sem-filter-example/#comment-36 Andreas Krebs Sat, 10 Jul 2010 16:39:01 +0000 http://blog.andreaskrebs.de/2010/05/08/doepfer-a-106-5-sem-filter-example/#comment-36 The SEM filter does not no self oscillate "as is", but it will produce nice bassdrum sounds if you crank up resonance (nothing to hear) AND modulate filter frequency with a fast envelope: http://www.andreaskrebs.de/assets/media/A-106-5bd.mp3 I start with an A-106-5 through an A-132-3 VCA. The VCA is set to maximum gain (i.e. constant amplification). When I increase the filter resonance, some noise will become more audible (made much louder here than it is in reality!), but no self-oscillation. Then I add filter frequency modulation by an A-140 and we can hear some nice things. Finally, the VCA is changed from constant amplification to being modulated by the same A-140. This doesn't work with an A-124 (Wasp), which will remain (nearly) silent even when modulated. Andreas The SEM filter does not no self oscillate “as is”, but it will produce nice bassdrum sounds if you crank up resonance (nothing to hear) AND modulate filter frequency with a fast envelope: http://www.andreaskrebs.de/assets/media/A-106-5bd.mp3

I start with an A-106-5 through an A-132-3 VCA. The VCA is set to maximum gain (i.e. constant amplification). When I increase the filter resonance, some noise will become more audible (made much louder here than it is in reality!), but no self-oscillation. Then I add filter frequency modulation by an A-140 and we can hear some nice things. Finally, the VCA is changed from constant amplification to being modulated by the same A-140.

This doesn’t work with an A-124 (Wasp), which will remain (nearly) silent even when modulated.

Andreas

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