Audio Fade In / Fade Out
Smooth Audio Envelopes
Add smooth fade-in beginnings and fade-out endings to music, podcasts, voice recordings, and background tracks with custom curve shapes.
What is Audio Fade In / Fade Out?
Audio Fade In / Fade Out Generator applies studio-grade volume envelopes to the beginning and ending of songs, podcast intros, voiceovers, and ringtones. Choose from four mathematical fade shapes — S-Curve (Cosine), Linear, Exponential, and Logarithmic — visualize the exact envelope curve over your waveform, and audition the fade-in or fade-out with one click.
How to Use Audio Fade In / Fade Out
Upload your audio track
Select your music or voice file, or load the built-in sample track.
Set Fade-In and Fade-Out durations
Use the sliders or presets (0.5s to 15s) to set how long the intro and outro fades last.
Select envelope curve shapes
Pick S-Curve for smooth musical fades, Exponential for dramatic swells, or Logarithmic for fast punchy intros.
Test Fade In / Fade Out and download
Use the quick audition buttons to listen to the start or end, then export your track.
Key Features
Independent Fade-In and Fade-Out durations up to 15 seconds each
Four curve shapes: S-Curve, Linear, Exponential, and Logarithmic
Interactive canvas displaying the live fade envelope curve over the audio waveform
One-click 'Audition Fade-In' and 'Audition Fade-Out End' preview buttons
Optional pre-roll and post-roll silence padding
Tips & Best Practices
- 1
S-Curve is the most natural-sounding fade for almost all music tracks and podcast outros.
- 2
When creating a phone ringtone, add a 1.5s Fade In so the ring doesn't startle you at full volume immediately.
Why Use Our Online Audio Fade In / Fade Out?
Audio Fade In / Fade Out processes and generates audio directly inside your browser using modern Web Audio and Speech APIs. Your text and voice recordings stay private on your device with zero server uploads required.
Frequently Asked Questions
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