Fade In

To fade in use the menu Effects -> Fade In.

Fade Out

To fade out use the menu Effects -> Fade Out.

Fade Out and Trim

The fade out and trim option is a combined function which fades out over the selection then marks the end of the selection as the end of the file. This is frequently used at the end of music tracks.

CrossFade

The CrossFade tool allows you to mix together voice and music in a variety of different ways. You can, for example:

• Fade out a music track while fading in another track,
• fade out a music track and cue in a voice track at full volume (or vice versa), or
• overlay the end of one voice track with the start of another track.

To use the tool, first select the region of audio you want to perform the crossfade on. If you want to crossfade between two files, you must combine the two files together first into one file. Next, go to Effects menu -> CrossFade. A window will appear, showing a graph and a number of data fields.

The graph is divided into two sections, the top section shows the fading in part of the audio, the bottom shows the fading out. The area that the crossfade is to be performed on is highlighted in blue, and surrounded by markers showing the start and end of the crossfade region. There is a one second portion of the waveform on either side of the highlighted section, which is there to provide a better view of the crossfade.

If you hover your mouse over any part of the graph, you can see what parts of the graph correspond to what time in the audio waveform.

The data fields work as follows:

Start and End Selected Positions

Tells you the start and end times of the audio you selected in the waveform. Note: These times do NOT correspond to the start and end times you see in the graph window! Read on!

Gap Time

This says how long the crossfade region will be, in milliseconds. This time may be be modified when the crossfade is performed, if the fade in and fade out times are larger than this value. Note: If this time is shorter than the audio you selected then the middle of the selected audio will be lost as a result of the crossfade.

Fade In Time

The length of time to fade in the end of the selected audio. For example, if you select 5000ms of audio and a Fade In Time of 1000ms, then the last 1000ms of your selection will fade in over the last 1000ms of the crossfade.

Fade Out Time

The length of time to fade out the beginning of the selected audio.

Fade Type

The shape of the transition over time of the fade in or out. You can select from Linear, Logarithmic, Expoential or Sinusoidal fade types.

• Linear - Volume change will occur evenly over time.
• Exponential - Volume change will start slowly to begin with and then rapidly become faster towards the end.
• Sinusoidal - Volume change will start slowly, then increase rapidly, then slow down again towards the end.
• Logarithmic - Volume change will start rapidly and slow down towards the end.

So with the above information in mind, the crossfade will work as follows:

1. A Fade-Out buffer will be created with a length of the Gap Time. At the start of the buffer will be the start of your audio selection, fading out over the Fade Out Time.
2. A Fade-In buffer will be created with a length of the Gap Time. At the end of the buffer will be the end of your audio selection, fading in over the Fade In Time.
3. The Fade-In and Fade-Out buffers will be mixed together, and replace your audio selection.