Apple Logic Pro 9 - Manual (Page 583)

Setting Audio Energizer Parameters
Here are the parameters in the Audio Energizer:
• Factor: Sets the amount of average level boost. A value of 0% means no alteration,
while higher values produce an increase in energy. The setting you make here will
depend on the audio material, situation, and personal taste.
• Begin by trying values in the 40% to 100% range.
• Values below 10% will have little effect.
• Values over 100% can lead to undesirable alterations in the sound, depending on
the material.
• Values over 200% are not recommended with normalized files, because they will
have detrimental effects on the sound and its dynamics. They can also greatly increase
the required computation time. On non-normalized audio data, however, even high
values can be effective because the overall level is initially increased to its maximum,
without affecting the dynamic range.
• Attack and Decay: These parameters control the steepness of the algorithm’s filter. Try
values of 2-to-4 times the default, if the result sounds too digital or raw. This can happen
if smaller elements among the main events in the signal are boosted. For example, the
reverb portion of a sound can become louder.
583 Chapter 17 Editing Audio in the Sample Editor