
Chapter 5
Audio File editing
The Audio File Workspace's Wave window is the heart of WaveLab's audio editing capabili-
ties. This is where you view, play back and edit individual Audio Files.
The Wave window gives you a graphical representation of an Audio File. It consists of two
parts:
The upper waveform (Overview)
This is mainly used for navigating through long files. Since you can have different zoom
factors in the two areas, the Overview can display the entire wave while the Main view
only shows you a detailed portion for precise editing.
The lower waveform area (Main view)
This is where the audio editing action takes place. You can perform various operations
on the wave such as copying, cutting, pasting, moving and deleting.
Waveform views
In the Audio File Workspace, the main wave editing window and the overview can indepen-
dently be set to display one of three display modes:
Wave - this is the default waveform display.
Loudness - this displays the average loudness of an Audio File, which can be useful
in many circumstances. For example, this display mode gives you an overview of the
amount of compression applied to a song. The more dips in the curve, the more dy-
namics in the audio material. An even curve with few dips indicates that the material
is compressed with a limited dynamic range (which is common for modern pop/dance
music). Up to four different curves can be shown simultaneously in the Loudness enve-
lope display. These curves have different colors and represent the average loudness of
the signal in different areas of the frequency spectrum. This can be useful to visualize
where in the frequency domain the loudness is "spread" at a given time, or to display
the loudness of a specific part of the spectrum. The curves can be shown individually
or in any combination.See Loudness envelope options for more details.
Spectrum - This displays the audio as a "spectrogram" which allows you to view the
level intensity of each area in the frequency spectrum across the time line. The Spec-
trum display mode in conjunction with the Spectrum editor provides you with a unique
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