Buchla 256e Control Voltage Processor: Applications, Use, and Tricks

video upload by Kent

"The Mighty, and Mightily Misunderstood, 256e Control Voltage Processor

This is a unique control voltage processor, regardless of the format. It is also unique in the Buchla brand in that it provides the only way to have VCA-like control over CVs, LFOs, and such. The Studio.h 254e does provide this kind of pseudo-VCA feature though and is an option for the “all analog man or mistress”.

The Breakpoints are wholly unique, are incredibly powerful; and I find them to be indispensable. As you’ll see and hear, they allow an incredibly detailed and personalized amount of fine-tuning of CV response. This is invaluable when used with a touchplate controller of any sort.

00:00 Start o’ fun!
00:24 4 Functions
01:00 Transfer Function explanation. How disting work?
02:24 Biasing
02:35 Attenuation
03:00 Constrain Voltages within a window
03:25 Constrain & Invert
03:49 VCA/Crossfader
04:43 Crossfade + Attenuate
05:17 Remote Crossfading
05:51 Breakpoint & Frequency Doubling
07:20 Frequency Doubling w/atten AND/OR waveshaping
08:30 Inversion
09:00 Attenuation
09:34 Biasing
09:43 VCA for CVs
11:12 Studio.h 254e will do this as well
11:19 Breakpoints with 223e Touchplate
14:28 Fine-Tuning Pressure sensitivity
15:13 Making a button. Dividing Touchplate key via breakpoint
16:10 Breakpoints w/Attenuation
16:20 Crossfading Audio via Inversion
17:52 Auto-Panning Ticks
20:00 Auto-Panning Frequency Doubled via Breakpoints
21:08 What would you like next?"