Adjusting the Curve between Nodes
The Curve parameter allows you to adjust the curvature between two nodes from linear to logarithmic or exponential behavior.
To adjust the curve, do one of the following:
Select the node or nodes that you want to adjust and enter a value in the Curve field. Positive values change the curvature towards logarithmic and negative values towards exponential behavior.
Click on the curve between two nodes in the graphical envelope editor and drag up or down.
Ctrl/Cmd-click a curve to reset it to linear.