video by WMDevices
"OSD, aka OR SUM DIF, is 3 independent blocks of useful utility in 4HP.
OSD is centered around combining voltage in useful ways. Audio, V/Oct, and control voltage are at home in this utility. OSD offers a fully DC coupled signal path with precision components to make this happen. High quality, configurability, and compact size ensure OSD will always find it's way into your patch.
- Combine v/Oct sequences with precision summing, or enable the the precision OR circuit for completely different results.
- Mix two envelopes or an envelope and lfo using sum to create large accented voltages or combine with OR to keep the output in the original range.
- Crossfade between audio or control voltage using the potentiometer in block one. Setting DIF will invert the signal at the B jack."
WMD OSD (OR / SUM / DIF) - in depth demo / tutorial
"In this video we cover the basics of Or, Sum, and Difference logic types and how they might be useful in a eurorack modular synthesizer performance system.
00:25 Skip the intro (module overview)
01:07 Logic Explanation
04:10 Patching with OSD"
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