#1

What mathematical units would assist with ER-301 patching? I’ve been in need of a unit that raises an incoming voltage to the nth power and a unit that rounds an incoming voltage to a multiple of some increment. I suspect logical operators are on the horizon. What sort of units would you like to see of the math and logic variety?

#2

Multiply by integer (VCA already does ?)
Toss, aka “flip a coin” : either 0 or 1
Random number within specified range
Scale : force a range into another

Pretty much anything that you can find in Teletype would be awesome but these above are the ones i’d use the most.

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#3

“Quantize” already rounds an incoming voltage, although it’d be nice to have more control over it.

I imagine math units could be grouped into larger multi-mode units. I did something similar with Euro Reakt.

1-input Math:
Round
Exponent
Full-wave rectify
Half-wave rectify
Invert
Voltage Mirror (1-x, where x is rectified)
Uni-to-Bi
Bi-to-Uni
Add/Sub constant

2-input Analog Logic:
Max (OR)
Min (AND)
Ring (Multiply)
Sum (Add)
Difference (Subtract)
Pong (Taken from Intellijel’s Shapeshifter: Take in 1 if positive, else if 2 is negative, else 0)
Curtis Roads Wave Terrain (http://www.cim.mcgill.ca/~clark/nordmodularbook/nm_oscillator.html#terrain)… may be worth breaking out multiple wave terrain equations into their own deal.

2-Input bitwise operations (OR, AND, XOR, Interleave, C-Element)
2-Input boolean operations (same, but round each signal to 0 or 1 and compare that way instead of through individual bits).

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#4

I like where this is going.

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#5

Another set of 1-input math operations that I forgot to mention from Euro Reakt: Trig functions!

Sin/Cos/Tan
Reg/Hyp/Arc

Those pretty much just need gain in/out parameters, along with an optional DC blocker if they’re used on audio instead of CV (plus limiting and filtering for edge cases).

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#6

yes to any maths modules these would be essential building blocks

#7

This is a bit more than simple math, but a PLL and at least some kind of zero-crossing-rate-counter would be great. A foundational building block for convert audio to a pitch CV.

#8

You’ve got the period-o-meter for this duty already.

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