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Post by leonsdl on Nov 14, 2018 14:43:29 GMT
Hey everyone! I have a question regarding the Wasp Type Filter's CV2 Input. I don't really understand what it does. Does it also modulate the Cutoff? If I have plugged in a modulation source on CV1 and then add another on CV2, the modulation of CV1 doesn't seem to to anything anymore.
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Post by thetechnobear on Nov 14, 2018 15:15:38 GMT
CV 1 and 2 are multiplied . note CV2 is not attenuated
(I find it easier to think of 0-5v as 0...1 , so the multiplication always gives you 0..1 (0..5v) )
easy way of testing/hearing it is:
wasp filter low freq
LFO -> cv1 (turn cv1 knob up)
2ATT , out 1 on +5v -> cv 2
if you turn that 2ATT down to zero, you get nothing up full you get the full LFO
sending in another waveform into cv2 will therefore combine... quite easy to get things like tremolo effects,
and its quite fun to send in audio rate signals too, to get FM cut-off .
EDIT: changed, its not summing (as I previously assumed) its multiplying.
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Post by knockman on Nov 15, 2018 10:35:22 GMT
Ah! That's what it does. I'd been wondering the same. I'm going to investigate feeding audio signals in.
Cheers
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Post by thetechnobear on Nov 15, 2018 17:22:25 GMT
actually not so sure again  im backed to thinking its kind of summing... but its a bit weird as far as i can tell it seems to be frequency is: freq knob + (cv1knob * cv1) +/- cv2 where +/- means its seems to be bipolar , ie it can both increase and decrease the cutoff, where 2.5 is the centre. (its the bipolar nature, that made be think it was multiplying) try this, remove cv1 2ATT in1=+5v -> cv2 set filter to around 12 o'clock 2att level1 to 12 o'clock now: take out the patch wire , notice is about the same put it back in now turn slow and a very small amount anti clockwise, filter is closed return to 12 oclock now turn slow and a very small amount clockwise, filter is opened the thing which makes it trick to hear whats going on, its its such small amount are moving the cutoff, and there is not a huge range on the filter.. importantly, you'll note that the same happens with different positions of the freq knob, so its an offset. from there, you can then add cv1, and see its doing its normal thing ... anyway not sure 100% thats whats going on... but in practice what i do is put an attenuated signal into cv2 and then 'mix' to taste  |
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