Short answer: Load the audio, select a range, enable Fade In or Fade Out, enter the duration, and preview the selection. After adding segments, each item can keep a different fade configuration.
How we tested a two-segment join
Tested August 4, 2026｜12-second mono WAV｜two keep ranges
We created segments at 0.995–4.002 seconds and 7.998–11.005 seconds. The first segment received a 0.2-second fade out; the second received a 0.2-second fade in. The combined duration remained 6.014 seconds. That is the expected behavior: a fade changes the gain envelope near a boundary without trimming time or overlapping the clips.
For spoken audio, our practical starting point is 0.2 seconds. Shorten it if a consonant loses impact. Lengthen it gradually if the boundary still feels abrupt. A fixed “best” duration is less useful than listening to the actual transition because speech, percussion, and ambience have very different transients.
What each fade fixes
A fade in raises the level gradually from silence, preventing an abrupt opening. A fade out lowers the ending smoothly to silence. Fades are common in ringtones, short-video music, podcast endings, and song excerpts without a natural ending.
Choose a starting value for the source
- Edit clicks: begin around 0.1–0.2 seconds so speech and drum attacks remain intact.
- Ordinary speech: try 0.2 seconds first, then compare the boundary with headphones.
- Ringtones and short music: start with a one-second ending fade and extend it only when the ending still feels rushed.
- Ambience: slower material can support a longer fade, but preview the real source before exporting.
Different settings for each segment
- Use the main fade controls as defaults for a new segment.
- Add the selected range to the segment list.
- Under that item, enable either fade and adjust its own duration.
- Preview the merged sequence before exporting.
A fade is not a crossfade
A fade changes the level near one segment boundary. A crossfade overlaps two segments in time while one falls and the other rises. The tool currently provides independent fades per segment; it smooths abrupt boundaries but does not overlap two clips.
Add a fade to audio