how do i invert cv from an lfo

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how do i invert cv from an lfo

is there any way I can make cv everytime the signal is negative from the lfo.

cause Im working on a patch and I led a lfo control the dry/wet of the reverb on the synth. the lfo is very slow and i want everytime that the dry/wet starting to go positive to make the volume of the drums fade away. for that if im right, I need something that everytime i have positive cv from the lfo to duplicate it and invert it to negative.

thanks in advance!!!

submitted by /u/eshtrogy
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