In this dialog, you can create a level envelope which can be applied to a selected range or an entire audio file. This is useful to even out loud and quiet parts or to create a sophisticated fade in or fade out, for example.
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To open the Envelope dialog, select the Process tab in the Audio Editor, and click Envelope in the Level section.
The dialog shows a waveform with an envelope curve (initially a straight line). A vertical ruler displays the level in dB, and the horizontal ruler displays the timeline.
To add an envelope point, double-click the envelope curve. You can then drag the envelope points to customize the pitch bend envelope.
The following options are available:
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Undo the Last Operation
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Redo the Last Undone Operation
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Deselect the Envelope Points
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Delete the Selected Envelope Points
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Reset the Selected Envelope Points
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Reset the Whole Envelope
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Flip the Envelope Around the Horizontal Axis
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Reverse the Envelope Time Sequence
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Toggle the Envelope Smoothing