Decay is not working as I'd expect

vvvv beta general
#1

Hi,

I believe I’ve used “decay” node successfully in the past but somehow now I don’t get it’s behaviour.

Let’s say I configure the attach to 0 and the decay to 5. and then I bang value 5 into it. I would expect decay’s output to go immediately to 5, which it does, but then to decay back to 0 during 5 seconds. But actually it takes much much much more than 5 seconds to reach 0 again.

Why? What am I doing wrong?

Here attached is an example of what I mean.

Thanks!
Nuno

strange decay example.v4p (3.7 kB)

#2

if you input a 1 as trigger impulse it exactly runs 5 secs. if you put in a higher number (like in your example) you have to divide the decay time trough the multiply of the tigger input number (in your example you have to divide trough 5 = 1 sec. or trigger your input with a 1 and then everything should be ok)

have a look here:

decay_from_5_to_0_in_5_sec.v4p (3.2 kB)

#3

m9dfuk beat me to it ;)

Seems like decay works with steps of 1.

strange decay example-1.v4p (3.2 kB)

#4

got it. thanks!

it’s a less intuitive approach but it also makes sense. The help patch should be more clear, though.

Thanks m9dfukc and West!

Nuno

#5

The answer to that question has only recently made it into the node Reference of the Node in question. It is very convenient to use, just press Alt+F1 in VVVV with a node selected. Please use and expand it, and show other users that it exists to answer all their questions :)

#6

Ah! Alt+F1. This is a great thing to know! Thanks!