The different types of fades are:
-| Linear | A simple linear coefficient decrease, and its
mathematical inverse. A Linear fade starts attentuating quickly
and then cuts off even more abruptly at lower levels. When used
as a crossfade, the signals are each -6dB attenuated at the midpoint.
This is the correct crossfade to use with highly-correlated signals for
-a smooth transition.
- |
|---|---|
| Constant Power | The constant power curve starts fading
slowly and then cuts off abruptly. When used as a crossfade
between 2 audio regions, the signals are symetrically attenuated, and
they each reach -3dB at the midpoint. This is the correct crossfade to
-use when you want to splice audio in the general ( uncorrelated ) case.
- |
| Symmetric | The Symmetric fade starts slowly, then
attenuates significantly before transitioning to a slower fade-out near
the end of the fade. When used as a crossfade, the Symmetric
curve is not mathematically correct like the Equal Power or Linear
curves, but it provides a slower fade-out at low volumes. This is
sometimes useful when editing 2 entire music works together so that the
-transition is more gradual.
- |
| Fast | The Fast curve is a linear decibel fade; It sounds
like a perfectly smooth fader or knob moved to silence. This shape is
excellent as a general-purpose fade-in. When used as a
crossfade, the inverse fade curve maintains constant power but is
therefore non-symmetric; so its use is limited to those cases where the
-user finds it appropriate.
- |
| Slow | The Slow curve is a modified linear decibel fade. The initial curve starts more gradually so that it has a less abrupt transition near unity. After that, it sounds like a perfectly smooth fader or knob moved to silence. This shape is excellent as a general-purpose fade-out. When used as a crossfade, the inverse fade curve maintains constant power but is therefore non-symmetric; so its use is limited to those cases where the user -finds it appropriate. - +finds it appropriate. |
Although these fade shapes serve specific purposes, you might find that @@ -131,3 +131,4 @@ finds it appropriate.