Apple Logic Pro X - Manual (Page 467)

Chapter 15 Advanced edit features 467
MIDI Transform window
MIDI Transform window overview
The MIDI 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 MIDI Transform window is a powerful tool for edits that would otherwise be impossible (or
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. Two hundred MIDI
regions contain aftertouch information that introduces an unpleasant pitch modulation, and
some sample layer switching artifacts when played with your string samples. After looking at this
aftertouch information, you discover that only a small range of values is causing the problem.
Your options: edit your sampler instruments, manually remove 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 MIDI Transform window.
A number of preset transform sets are available for many common editing tasks. These may be
all you’ll ever require, but should the need arise, you can create and save your own transform
sets, and recall them later.
Tip: The Environment contains a similar transformer object that you can use for real-time
transformations of MIDI events. See
Transformer objects overview on page 815.
Open the MIDI Transform window
Do one of the following:
m Choose Window > Transform (or use the Open Transform key command, default
assignment: Command-4).
m If you want to transform events that you have selected in one of the MIDI editors, choose a preset
from the Functions > Transform submenu.
Note: You can choose the Window > Transform command while you are in a MIDI editor, but will
need to manually select a preset.