Apple Logic Pro 9 - Manual (Page 725)

The Transform window allows you to define a set of conditions and operations that are
used to select and alter specific MIDI events.
This chapter covers the following:
• Getting to Know the Transform Window (p. 725)
• Choosing and Using Transform Sets (p. 726)
• Learning About the Transform Presets (p. 727)
• Using the Transform Window Parameters (p. 738)
• Creating Your Own Transform Sets (p. 744)
• Importing Transform Sets From Other Projects (p. 745)
• Usage Examples (p. 745)
Getting to Know the Transform Window
The Transform window is so-named because it transforms MIDI events—based on
conditions, operations, and values you choose—into different types of events, or events
with different values.
The Transform window is extremely powerful, and is the ideal tool for edits that would
otherwise be impossible (or at least, incredibly tedious). For example, imagine an orchestral
project that has been sent to you for editing. The individual violin and viola parts were
recorded with a different string library, and feature aftertouch information (in 200 MIDI
regions) that introduces a weird pitch modulation, and some sample layer switching
artefacts when played with your string samples. After looking at this aftertouch
information, you discover that only a small range of values are causing the problem. You
have a few options: edit your sampler instruments, manually strip out all aftertouch
information (region by region, or globally, thus losing the performance benefits that the
aftertouch information provides) or alter the problematic values in the Transform window.
Option three sounds like the way to go.
725
Editing MIDI Events in the
Transform Window 26