Steinberg WaveLab 7 Operation Manual

4.6 Offline processing 47
WaveLab contains a powerful array of offline processing tools including the following:
Change Level
Level envelope
Normalize Level
Silence Generator
Loop Tone Uniformizer
Pitch correction
Time stretching
Loop Tweaker
Effect morphing
Loudness distribution
Loudness normalizer
Pan Normalizer
Pitch bend
Pitch quantize
Related topics
Presets
Rendering
4.6.1 Change Level
This dialog allows you to apply a gain to change the level of an Audio File.
You can also use "Find current peak...

48 WaveLab Concepts
4.6.2 Level envelope
This dialog allows you to create a volume envelope which can be applied to a selected range
or a whole Audio File. This could be useful if you need to even-out loud and quiet parts, for
example.
You can edit the envelope by:
ˆ Double clicking on the line to add a point: double click on a point to remove it.
ˆ Selecting multiple points (using [Shift]click) allows you to move the selection as a
group.
You can also use the controls to delete or reset points in the...

4.6 Offline processing 49
4.6.4 Silence Generator
This dialog allows you to generate "silence", either by replacing an audio selection, or by
specifying a duration.
You can also specify a cross fade at each end of the silent region, for a smoother transition.
Radio buttons determine where the silent period is placed in the audio.
In WaveLab you can also specify a file to be inserted instead of "true" silence. This can be
useful for example, if you wish to keep the ambience, or background...

50 WaveLab Concepts
4. Set up the post cross fade parameters and click Apply.
It can also be a useful tip to lock the loop markers after you use this command on a selection
within an Audio File. Once the loop is processed in place, moving the loop markers will upset
playback of the loop.
You can access this dialog in the Audio File Workspace via Process>Loop Tone Uni-
formizer... .
For an explanation of each parameter and interface feature, click on , or the 'What's this?'
question mark icon....

4.6 Offline processing 51
You can view exact time information on the original audio selection you wish to stretch and
choose the amount you wish to "stretch" it in seconds, beats per minute or as a percentage.
You can also choose which method WaveLab uses to stretch the audio and the quality/speed
of the processing.
If you select "Use modulation envelope" you can vary the time stretch over time using an
envelope editor that becomes available. When choosing a method, it is useful to...

52 WaveLab Concepts
loop points. You can also leave this dialog window open and manually adjust the position of
the markers in the main waveform windows if you need to make large adjustments.
Cross fade
This tab allows you to apply a cross fade at the end of a loop by mixing a copy of the beginning
of the loop with it. This can be useful to smooth the transition between the end of a loop and
its beginning - especially when using material that doesn't naturally loop. Use the envelope
drag points or...

4.6 Offline processing 53
4. Adjust your envelope points over time between 0% and 100%. This will determine the
level and direction of the morph. For example, starting at 100% and ending at 0% will
fade out the effect you just applied.
5. Choose "Unprocessed selection" for this example. As mentioned previously you can
also use any audio of the same duration from the clipboard.
6. Click Apply to apply the Effect morphing.
You can access this dialog in the Audio File Workspace via Edit>Effect...

54 WaveLab Concepts
The Loudness Normalizer raises the loudness and limits peaks in the signal at the same time
(if needed), to achieve the target loudness.
In the case of stereo files, both channels are processed independently. This process happens
over several stages; analysis precedes the final rendering. The Loudness Normalizer dialog
gives access to useful statistics about the file and the
Loudness distribution tool, and you
can choose to remove any DC offset in the file.
You can access this dialog from...

4.6 Offline processing 55
If length preservation is activated, you can choose the algorithm that is used to perform the
pitch bend operation. Depending on the type of audio material you are processing, choose
the appropriate mode. For more information on the different modes, use the "What's This?"
tool. You can also adjust the quality used when processing the pitch bend. The quality setting
and the selected mode will affect the processing time for this effect.
This function could be used for...

56 WaveLab Concepts
copy them for use on another computer.They are also useful when used in conjunction with
batch conversions and Scripting .
Working with Presets
When working with Presets you save/edit and load them from their own pop-up menu. De-
pending on the context, the available functions sometimes vary but generally you can:
ˆ Save/Save As... - creates a new Preset file by saving the currently selected settings
to your hard disk.
ˆ Explore presets... - opens the folder where any existing Presets...