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Presets are a way to store dialog settings so that you can apply the exact same processing or effect again
in the future. The following table tells you how to use presets in the effects dialog boxes.
Many audio processing and effects presets are supplied with SONAR.
Using the Normalize and Gain Commands
SONAR provides several commands to boost or cut the volume of audio data. The Process-Audio-
Normalize command, and the Process-Audio-Gain commands are used to control the volume of
selected audio data, in decibels. For more information on the decibel scale, see “The Decibel Scale” on
page 321. The
Normalize command “normalizes” the audio data: it boosts the volume until the
maximum amplitude is reached somewhere in the data. By normalizing the data, you achieve the
maximum possible volume without distortion or clipping. The
Gain command lets you edit the volume,
phase, and stereo interleave of selected audio data. You can also use this command to remove center
material from a clip (good for removing vocals).
Like all the audio processing commands, these commands work by modifying the waveform data. You
can achieve volume changes non-destructively using automation. For more information, see Chapter 13,
Automation .
When increasing or decreasing the volume of audio clips, you should consider the following points:
• Normalize raises the noise floor; that is, while it increases the volume of the signal, it also boosts
the noise it contains. (This is true when you raise the volume by other means, too.)
• Due to the nature and limitations of digital audio, the sum of all audio signals played together
cannot exceed the waveform amplitude limit. Even though no individual clip is clipped, the
combination may cause distortion.
If the selection contains any loud signals, Normalize may not seem to have any effect. This is because
the volume increase is determined by the loudest audio in the selection. If an audio clip contains
segments that are too quiet and others that are loud, you should probably split off the quiet segments
into separate clips and then normalize those.
To Normalize Audio Data
1. Select the audio data to be affected.
2. Choose Process-Audio-Normalize from the menu.
The Normalize dialog appears.
3. Drag the Normalize Level slider to the approximate level you think is appropriate.
4. Click OK to process the selected audio.
Listen to the edited data. You can use the Edit-Undo command if you don’t like the results, and then
try a different setting in the Normalize dialog.
To do this... Do this...
Save the current settings as a preset Enter a preset name and click the Save button
Use a preset Select the preset from the dropdown list
Delete a preset Select the preset, then click the Delete button