Audio Fader (Fade In / Out)

Adds a smooth fade-in at the start and a fade-out at the end of audio files.

What it does

Use this to give podcast episodes a professional opening/closing, kill click noises caused by abrupt starts and stops in music, or soften presentation audio.

How to use

  1. Drag audio files into the list.
  2. Set the Fade In Duration (default 2000 ms = 2 seconds).
  3. Set the Fade Out Duration (default 3000 ms = 3 seconds).
  4. Click Run.

You get one faded copy per file.

Picking durations

  • Fade In: Time for the volume to ramp from silence to full. 0 ms means off, 30000 ms is the max (30 seconds).
  • Fade Out: Time for the volume to ramp from full to silence. 0 ms means off, 30000 ms max.

Typical uses:

  • Podcast intro: 2-3 second fade-in
  • Podcast outro: 3-5 second fade-out
  • Music track: 1-2 seconds at both ends
  • Presentation audio: 0.5-1 second at both ends

Examples

Polish podcast episodes: Add the episodes, Fade In 2000, Fade Out 4000, run.

Kill clicks in music tracks: Add the tracks, Fade In 1000, Fade Out 1500, run.

Soften presentation audio: Add the files, Fade In 500, Fade Out 500, run.

Fade out only: Fade In 0, Fade Out 3000, run. The start stays as-is, the end fades.

Watch out

  • If the fade duration is longer than the file itself, the fades overlap and the whole thing sounds weak.
  • The curve type (linear/exponential) cannot be picked in the UI, it is applied automatically.
  • 0 ms turns that end off, no fade is applied.
  • On long files small fade durations (1-2 sec) usually suffice.
  • The same settings apply to every file in the batch.

License

Free tier has a monthly fade cap. Office plan removes it.