Apple GarageBand '09 - Manual (Page 99)

Chapter 9 Tutorial 7: Mixing and Adding Effects 99
4 To see the frequency curve for the track in real time, select the Analyzer checkbox, then
play the track.
To save an effect preset:
1 Adjust the settings for the preset to get the sound you want.
2 Choose Make Preset from the pop-up menu, then type a name for the preset in the
Save dialog.
Drag in one of the four bands to
graphically adjust the Visual EQ.
Click the Analyzer checkbox to see
the track’s frequency curve.