Apple Logic Express 7 - Manual (Page 140)

140 Chapter 4 Audio in the Arrange Window
MIDI and Audio Regions Compared
The following overview sums up the main differences between Audio and MIDI
Regions. There are some notes at the bottom of the table to clarify the most important
points.
Naturally, some of the parameters that can be applied to MIDI events have no effect on
audio signals. Equivalent operations for most of these are available as destructive edit
operations in the Sample Edit window.
Feature
MIDI
Regions
Audio Regions
Composed of discrete data Yes No, because Regions are just references to
parts of audio files
Can be given names Yes Yes
Loop Region parameter available Yes Yes
Quantize Region parameter available Yes No, but but the position of Regions themselves
can be quantized, using the Event List display
on the Arrange level.
Transpose Region parameter available Yes No, but you can use the Time Machine and
Pitch Shifting functions. Apple Loops can be
transposed.
Velocity Region parameter available Yes No
Dynamics Region parameter available Yes No
Gate Time Region parameter available Yes No
Delay Region parameter available Yes Yes
Can be freely positioned Yes Yes
Left or right corner edit Yes Yes, and this affects the Audio Region, but not
the position of the audio waveforms relative to
the time axis of the sequencer
Can be cut with the Scissors tool Yes Yes, creates a new Audio Region.
Can have aliases made of them Yes Yes
Left corner may be dragged to
conceal data at beginning No Yes
Have a variable musical reference
point No Yes, a variable Anchor. This affects all Regions
derived from a given Region, and can change
the position of the audio, relative to the time
axis of the sequencer
Can be turned off with the Mute
function Yes Yes
Can be grouped into folders Yes Yes
Can be soloed Yes Yes