Apple Logic (1.1) - Manual (Page 46)

46 Chapter 5 MIDI Regions
A nice feature of Logic is that global adjustments made to multiple MIDI Regions work
relatively. In other words, this means that individual transposition differences (the
relative pitches) between MIDI Regions are maintained, even if all MIDI Regions are
transposed. As an example, if you were to rubber-band select the transposed “Bass”
MIDI Region and the preceding “Bass” MIDI Region, and transpose both of them up five
semitones, the originally transposed MIDI Region would be playing back eight
semitones higher (three semitones plus five semitones), and the other MIDI Region
would be playing back five semitones higher than their original pitches. Try it out.
Quantize
Quantizing is the rhythmic correction of notes, aligned to positions on a grid. When
quantization is applied to any selected event or MIDI Region, Logic will move all note
events to align perfectly with the nearest grid positions.
In the image above, the first four beats show unquantized note events. In the second
four beats, the notes have been quantized, and now align to the nearest beat positions
on the grid.
In the Tutorial song, Logic’s Quantize function is used on the brighter colored “HiHat”
MIDI Region between measures 9 and 13. The timing of note data in this MIDI Region
was intentionally left slightly off the beat. As Quantize is activated and set to 16th Note,
you cannot hear these timing errors.
To deactivate the Quantize function:
1 To best illustrate how quantization affects MIDI note timing, you should activate the
metronome. To do so, click on the Metronome button found toward the lower right end
of the Transport Bar.
2 Select the bright “HiHat” MIDI Region.
3 Set a cycle from measure 9 to measure 13 by choosing the Region > Set Locators by
Regions menu entry (this function is also available as a key command), and activating
the Cycle button in the Transport Bar.