Hi, I'm looking for an object that does something simple, but not sure if it already exists (or what it's called):
I'd like an object that's has at least 1 signal rate input, and 1 signal rate output. The output is just some stored value (let's say it starts at zero), and the input "steers" the stored valued of the output... if the input is positive, the output increases. Negative input -> decrease. Zero input -> no change. And the absolute value of the input is essentially the rate of change of the output.
At control rate, this is simple to make of course. At signal rate, I could think of ways to make this with basically a +~ feeding back into itself (with some small delay), and the other input of the +~ being the "steering" input.
But, I wondered if this is already an object that exists, and also what the name of this concept is. It almost seems like a kind of filter. I need it for an idea!