User Manual

Table Of Contents
WAVELAB
11 – 266 Spectrum Editor
You can also do the same in the frequency domain; have the Source and
Destination regions in the same time line position, but in different frequency
ranges.
This could be used to mask a spurious sound artefact with few harmonics, by copying the
audio placed a bit “lower” or “higher” in the frequency range. Note that when copying be-
tween different frequency regions pitch shifting takes place. Tip: Copying a source region
to the destination region using the “Move region upwards (or downwards) 1 octave” op-
tions on the speed menu will often produce better results.
This mode is useful to replace narrow frequency ranges, e.g. feedback.
Having an octave shift from the source to the destination region can help
achieving better results (there is a function for this in the speed menu).
For audio restoration work you should generally avoid copying regions in
the low to low mid frequency range. This is where most of the “energy” in
the sound is usually found, which makes the masking/removal of any un-
wanted artefact difficult to achieve without audible interruptions. Therefore,
to remove or reduce artefacts, it is important to find a limited frequency
area, so as not to interrupt the flow of the audio.
You perform a Copy operation in the following way:
1. Select the region that you wish to use as Source region.
As stated before, this could be right before or after the sound artefact to be removed, or it
could be in the same time line but in a frequency range just above or below the range con-
taining the sound you wish to mask. Note that these are guidelines, not absolute rules.
2. To use the selected region as the Source region, click the “Mark” button
in the Source section of the dialog.
You can also right-click to bring up the speed menu and select ““Define as Source region”.
As the Destination and Source regions have to have equal length and fre-
quency ranges, the simplest method is to use the Source region as the
basis for the Destination region, or the Destination region as the basis for
the Source region. The following describes the former method, but the
general procedure is the same: