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Diode Ladder Filter with LED's

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Published on Jan 1, 2007

Classic diode ladder filter (similar to Moog) but built with LED's.

Instead of the fc sweep being shown by just a buffered LED, I thought it would be cool if the actual diodes doing the filtering also could display a visual correlate of what they're doing. Using a light bar means all LED's were matched within 4mV.

Setup: TR707 running an Ashley's Roachclip beat through the filter, Rimshot 5V trig out triggers Ray Wilson's EnvGen that sweeps the cutoff, resonance set to max.

Sorry for the lowish quality - shot with an old digital camera with limited capabilities.

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