A volume curve allows you to vary the volume over the length of the track.    
To create a volume curve, proceed as follows:
1.
Select the track for which you want to change the volume.
2.
Click the Tracks > Add Volume Curve entry in the menu bar.
à
The volume curve is displayed in the track. On the left border of the track a percentage scale from 0 to 100 is displayed for the volume.
3.
Move the starting point of the curve, i.e. the square box at the left corner, to the desired initial volume.
4.
Click the volume curve where you want a volume change and move the square box up or down.
5.
Repeat the previous step until you have specified all desired points of the volume curve.
6.
If you want to delete a specific curve point, right-click the curve point and select the Remove Curve Point entry in the displayed context menu.  
7.
If you want to define the settings for a curve point more precisely:  
1.
Right-click the curve point and select the Edit Curve Point entry in the displayed context menu.
à
The Edit Curve Point window is opened.
2.
Enter the desired position of the curve point in the Min. and Sec input fields in the Time Line Position area.
3.
Enter the desired volume in decibels in the Volume text box in the Value area.
4.
Click the OK button.
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You have created a volume curve and added it to the track.


Creating a Volume Curve