In this guide
Select the interval that should fade, then choose Effect → Fading → Fade Out or Fade In. The selection determines the fade duration. Listen beyond the selection and export a separate file.
To fade audio out in Audacity, select the part of the waveform over which the sound should become quieter, then choose Effect → Fading → Fade Out. The selected interval determines the fade length: the basic effect moves from the original level at its start to silence at its end. For an entrance, select the opening interval and choose Fade In. Audacity's fade reference documents both effects.
Listen from before the selection through the end. If the fade finishes before the clip does, later audio can remain at its original level, creating an abrupt return. Include the intended ending or make a deliberate edit after the fade.
Fade out a track or clip
- Open a working copy. Import the recording and keep the original. Find the last complete word, note or effect tail you want to retain.
- Select the fade interval. Drag across the waveform from where the decrease should begin to where it should reach silence. Select the intended track; a very long selection can make the material quiet too early.
- Apply Fade Out. Choose Effect → Fading → Fade Out. The basic effect follows a linear amplitude curve across the selection. Menu names can vary by version.
- Listen and revise. Play from before the fade through any material that follows. Undo and select a different interval if the ending feels abrupt or the fade removes a needed syllable.
- Export the actual file. Use File → Export Audio, select the intended project or selection, format and destination, then open the exported file to check the ending. Audacity's export documentation explains the available export scopes.
Fade in without losing the beginning
Select the portion that should rise from silence and choose Effect → Fading → Fade In. A fade spanning the first consonant or the attack of a drum can make it less distinct. Move the selection into preceding room tone or choose a shorter fade if that attack must remain. The cut-click guide helps identify whether an abrupt edge or a click inside the recording is the problem.
Fade out, crossfade or automate?
| Goal | Method to test | What to check |
|---|---|---|
| End one recording gradually | Fade Out over the intended ending. | Last words, notes and any audio after the selection. |
| Move between overlapping recordings | Use an appropriate crossfade workflow. | The overlap, level dip and intelligibility through the join. |
| Lower music while speech plays | Adjust the separate music track's level over time. | Dialogue and the return of music after the speech. |
A crossfade lowers one section as another rises; it is different from fading a clip to silence. Audacity documents Crossfade Tracks for overlapping tracks, and its crossfade tutorial covers other arrangements. Listen for doubled words or a volume dip instead of assuming every overlap will sound smooth.
Audacity also offers shaped and adjustable fades. Its manual notes that applying an effect to a time-stretched clip can render the speed change and split the clip at the selection. Preserve a project copy before applying effects if later editing matters. The fade reference also documents a Studio Fade Out issue involving an existing envelope; inspect your version and working copy before using it.
Fade a short file without installing an editor
The free Saturalabs fade tool applies adjustable fades to the outer edges of a supported mono or stereo MP3 or WAV up to 50 MiB and five minutes. It processes locally and previews the file you download. It does not edit an Audacity project, automate an interior region or crossfade two clips. WAV is 48 kHz 16-bit PCM; MP3 is re-encoded and can add delay or padding. Keep the original.
Common questions
Why does the sound come back after my fade?
The effect operates on the selected interval. Audio after that interval can still play, so check whether the selection reaches the intended endpoint and whether other tracks remain audible.
Can I fade music without fading the voice?
Yes if music is on a separate track: select or automate the music, then listen to the voice in context. If music and speech are already mixed into the same recording, a simple fade lowers both. A music-separation test may help but can leave bleed or alter wanted sound.
Will a fade remove background noise?
It lowers everything during the selected interval. It does not independently remove noise while leaving speech unchanged. Use the Audacity noise-reduction guide when steady background noise is the actual problem.