Effect: Fade in / out

Description of effect: 
This effect is used for fading in or out the volume of the sound. 

Main benefit: 
You can set the characteristics of the fade by simply altering the curve. Fade hard, or soft.

Description of parameters: 
    Behavior: An image displaying the current behavior of the fading. The picture is square, but of course apply to the full area you selected. You can not draw in this image. 

    Offset: This value tells you how far the faders will go. Maybe you don't want to fade out completely, but only to 10% or 80% (Perhaps you enter a different part of the song, and you want to place the sound in the background.)  If you are fading out, the Magnitude value is referring to the final volume, and if you are fading in, it is the initial value. 

   Curvature: This parameter states how "fast the fade will be". NOTE! What ever selection you have made, this will be the length of the fade. "Fast" in this case is far more subjective, as it is only the "envelope" of the fade that is considered. A value of 0 (zero) means that the fade is linear (in the behavior image you see a straight curve) and a value of 100 means a soft curve, slow in the beginning and end, and fast in the middle. This will be heard of as a "fast" fade as the volume change is noticed more in the middle of the selection. 

Preview: Press the 'Preview' button to test the effect to see if it is tuned properly. It is quicker than applying the effect and making an undo...

What could go wrong 
The behavior image, could sometimes fool the eye of how fast the fade will appear to sound. The fast fade will tend to change the volume only in the middle of the selection. The normal procedure will therefor be to make a longer selection (even outside the boundary's where you don't want fading) if the fade is coming too quick! 

For you that wants to know more... 
Looking at the behavior it is possible to see the behavior of an arctan function (math-stuff...). Actually the mathematical function is (simplified): 

    Volume=(pi/2+arctan(speed*time)/pi 

where the middle of the selection is "time=0". Thus changing the speed-criteria will zoom in and out of an arctan function. 

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