Apple Logic Pro 8 - Manual (Page 511)

Chapter 21 Editing Audio in the Sample Editor 511
You could compare the effect to an analog tape which has been saturated with a high
recording level. The distortion factor and effect on the audio material is much lower
than that of analog tape saturation, however.
Here’s an example of the effect. If a normalized audio file (audio data which is already
at the maximum dynamic range) is processed with the Audio Energizer, and played
back through an audio channel: the channel meter will show a higher level, indicating
increased average energy in the signal, but the peak level display will not change, as
the maximum signal level has not been altered.
Note: If the material contains anomalies such as noise, these will also be increased, and
can become audible. If necessary, you can process the energized audio file with the
Silencer (use a low setting), or make use of the Denoiser effect plug-in.
To open the Audio Energizer, do one of the following:
m Choose Factory > Audio Energizer in the Sample Editor (or use the corresponding key
command).
m Click the Audio Energizer tab if another Digital Factory processor is visible.
Factor
Set 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.