Apple Logic Pro 9 - Manual (Page 580)

Setting Groove Machine Parameters
Here are the parameters in the Groove Machine:
• Swing: Sets the swing factor. At 50% there is no change—you generally achieve the
best results with values around 55% to 65%.
• Based on Period: You can determine whether the audio material should be quantized
on the basis of 1/8-note, or 1/16-note swing.
• Down Beat Level and Off Beat Level: Determine whether the down beats, or off beats,
in the audio material should be raised or lowered. Positive values increase the level,
and negative values reduce the level. Bear in mind that raising the level of normalized
audio material can cause distortions—particularly on the down beats, which are usually
louder.
• Corresponds with Tempo: If you change this value, you will set the project tempo at the
current playhead position.
• To Bar Length: Defines the length of the selected audio material in musical values—bars,
beats, divisions, and ticks.
580 Chapter 17 Editing Audio in the Sample Editor