Adobe AUDITION 3 User Manual page 110

Moving a control point moves the related slider, and vice versa.
• To move a point on a graph, drag it to a new location. (When the pointer is over a control point, the pointer
changes from an arrow to a hand.)
Note: The following techniques don't apply to the Full Reverb, Parametric Equalizer, and Track EQ graphs. (See "Full
Reverb effect" on page 153, "Parametric Equalizer effect" on page 132, and "Equalizing tracks" on page 190.)
• To add a control point to a graph, click in the grid at the location where you want to place the point.
• To enter numeric values for a control point, right-click the point to bring up the edit box, or double-click the
graph's curve.
• To remove a point from a graph, drag it off the graph.
• To return a graph to its default state, click Reset (labeled "Flat" in some dialog boxes).
About spline curves for graphs
By default, graphs display straight lines between control points. However, some graphs provide a Splines or Spline
Curves option that creates a curve between control points for smoother transitions.
When you use spline curves, lines don't travel directly through control points. Instead, the points control the shape
of the curve. To move the curve closer to a control point, click to create more control points near the point in
question. The more control points are clustered together, the closer the spline curve will be to those points.
Graph with straight lines compared to graph with spline curves
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User Guide