The preset options will cater for most crossfading tasks, but if fine control over the effect is required, the custom curve option may be useful. This version is based on the legacy 'Cross Fade In' and 'Cross Fade Out' effects of previous versions of Audacity. This variation of the constant power fade starts to fade in a little more rapidly than 'Constant Power 1' and the crossfading may sound a bit abrupt in the first or last moments of the fade, though it may be preferred when crossfading songs that are beat-matched. 'Constant Power 1' is generally a good choice as a general purpose crossfade effect.Īs with 'Constant Power 1', this option is also designed to maintain a fairly constant volume through the course of the fade. 'Constant Power' fades combat the tendency of the volume dipping, so will often be the preferred choice, though care needs to be taken when using this type of crossfade as the peak level may rise during the course of the fade. However, 'Constant Gain' crossfades may cause the overall volume to dip slightly during the fade. 'Constant Gain' ensures that, as long as the original audio is not clipped, the crossfade will not clip - this is the default. It fades out the upper track, and fade in the lower track with linear fades (the same type of fade as is achieved by using the Fade In / Fade Out effects). To apply a simpler (non-configurable) crossfade between audio clips on the same track, see Crossfade Clips. Select the overlapping region in both tracks (see example below) and apply the effect. The tracks should be positioned with the track to be faded out above the track to be faded in, and with the start of the lower track positioned before the end of the upper track so as to create an overlap between them. Use the Crossfade Tracks effect to make a crossfade or smooth transition across two tracks.

Merge tracks audacity