Apple GarageBand 2.0 - Manual (Page 57)

Chapter 8 Working in the Editor 57
Editing Controller Information in a Software Instrument Region
Most music keyboards designed to be used with computer music programs include
“controllers” for pitch bend and modulation. These controllers are often circular
“wheels” placed at the left end of the keyboard. Some keyboards also include other
controllers, such as a sustain pedal, a foot controller, or an expresssion control.
Moving the pitch bend wheel while you play causes the notes you play to bend up or
down in pitch, like a guitar. Moving the modulation wheel creates changes in the
sound of the Software Instrument. These are different for different instruments, but
often involve changing the frequency, rate, or intensity of a filter applied to the
instrument.
If you move a controller while recording a Software Instrument, the movements are
recorded in the Software Instrument region. You can see the movements you recorded
and edit them in the editor.
To display controller information for a Software Instrument region:
1 Double-click the region to open it in the editor.
2 Choose the type of controller information you want to see from the Display pop-up
menu.
Controller information is displayed as a line with “dots” at different points in time. This is
similar to the volume curves for tracks in the timeline. Each “dot” (called a control point)
shows a change in value (in this case the movements of the controller) at that point in
time. You can edit the controller information by adding new control points, and by
adjusting control points to change their value or to change where in the timeline they
occur.
To add a control point:
m Click the line in the editor at the point in time where you want to add a control point.
To adjust a control point, do one of the following:
• Drag the control point up or down to a new value.
• Drag the control point left or right to move it to a different point in time.
You can also view and edit Software Instrument regions in notation view in the editor.
For information about notation view, see “Working In Notation View” on page 58.