Apple Using WaveBurner Logic Pro 7.1 - Manual (Page 21)

21
Adjusting Levels
A horizontal line—known as the region’s level envelope—is overlaid on top of each
region in the Wave View area. The line shows the volume level for the region. You can
adjust the region’s volume level by moving it up or down.
To adjust the level of a region:
1 Move the pointer over the horizontal level envelope that you want to adjust.
The pointer changes to a vertical line, with arrows pointing up and down.
2 Drag the envelope up or down to a new value.
Note: Pressing Option while dragging allows you to manipulate the level
independently for each stereo side.
Checking a Region for Clipping
You can check individual regions for clipping.
To check a region for clipping:
1 Select the region in either the Wave View area or the Region list.
2 Choose Region > Check Region for Clipping.
After completing the process, a detailed log displays the results of the clipping analysis.
Normalizing Regions
Typically, you want the volume level of your audio regions to be as high as possible,
without causing clipping. Changing the level of a region to the maximum possible
value without causing clipping is called normalizing.
When a region is normalized, it is boosted so that the signal peak reaches (but doesn’t
exceed) the set digital level (maximum: 0 dB). All other portions of the region are
boosted by the same amount, so that the original dynamic range of the recording is
maintained. This ensures that the region will play at maximum level without clipping.
To normalize a region:
1 Select the region in the Region list or Wave View area.
2 Choose Region > Normalize Region.
Note: You can set a target level lower than the permissible peak level (0 dB) in the
Normalize window, if desired.