Apple Logic Pro 8 - Manual (Page 464)

464 Chapter 19 Quantizing MIDI Events
 Time Correction: This parameter allows you to compensate for any time delays that
may occur when external samplers or synthesizers are triggered by MIDI notes. These
time delays are sometimes very noticeable, particularly if the connected device is
playing a MIDI region (that was quantized with an Audio-to-MIDI groove template) at
the same time as the original audio material. You should be able to compensate for
this effect by using settings between –20 ms and 0 ms.
At the bottom of the Sample Editor, you’ll see three fields labeled: Audio, Quantize, and
Result.
 Audio: Displays the quantization points identified in the audio file.
 Quantize: Shows the quantization points selected as the Basis Quantize.
 Result: Shows the quantization positions in the new groove template, which are
produced by the combination of the two values above.
5 Click on any audio trigger point to prevent it from being transferred to the template.
Manually selected (unused) points will be dimmed.
6 Click the Try button in the Audio to MIDI Groove Template to apply the new groove
template to all selected MIDI regions,
7 Listen to the results.
8 Adjust the parameters until you are happy with the resulting groove, and then click
Use.
This saves the new groove template, and adds it to the bottom of the Quantization
menu. The quantize template name is derived from the audio file name.