Millisecond-accurate afade curves plus an optional dB gain trim.

Fading a 3:42 track without the ending click

The Audio Fader adds a fade-in and fade-out to any song or voice track, with both lengths set in milliseconds plus an optional gain trim from −12 to +12 dB. Take a track that runs 3:42 — 222,000 milliseconds. A 2,000 ms fade-in lifts the first two seconds smoothly out of silence. A 4,000 ms fade-out is anchored to the end: the tool reads the track's duration on-device first, so the fade begins at 3:38 and lands exactly on the final sample instead of cutting off mid-note. Add +6 dB of gain and the whole waveform doubles in amplitude before the fades are drawn over it.

Fades aren't one-size-fits-all. Music wants room to breathe — 2 to 4 seconds on the way out sounds natural. Voice is different: a 300 ms fade-in on a podcast kills the plosive pop without sounding edited, and a long fade-out on someone talking just feels like they wandered off. Watch the gain, too. Pushing a loud, mastered track up 12 dB slams the peaks into a hard ceiling and flattens them into distortion. Keep boosts modest on loud material; when a file is genuinely quiet, proper normalization beats brute gain.