Create smooth fade-in and fade-out transitions with multiple curve types: linear, exponential, logarithmic, S-curve, and ease-in-out. Adjustable duration and visual envelope preview.
Apply fade-in and fade-out effects to your audio files. Set the duration for each fade, choose a curve shape, linear, exponential, or logarithmic, and preview the result. Fades smooth out abrupt starts and endings, making clips sound polished and professional.
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Generate beautiful waveform visualizations from audio files. Choose from bars, mirror, line, or circular styles. Customize colors and export as PNG.
Trim, cut, and slice audio files with interactive waveform visualization. Drag handles to select portions, use keyboard shortcuts, zoom and pan, preview selection before export. Supports MP3, WAV, OGG, AAC.
Convert audio files between WAV, MP3, OGG, AAC, M4A, FLAC formats online. Adjust bitrate and quality settings. Free browser-based conversion with no file uploads to servers.
A song clip for a video starts and ends abruptly and needs smooth fades.
Input
clip.mp3 · fade-in 1.5 s · fade-out 3 s · exponential
Output
Gentle ramp up and a natural-sounding tail
An exponential curve matches how we perceive loudness, so fades sound smooth rather than the unnatural rush a linear ramp gives. Clean fades remove the jarring edits that cheapen a video.
Apply fade-in and fade-out effects to your audio files. Set the duration for each fade, choose a curve shape, linear, exponential, or logarithmic, and preview the result. Fades smooth out abrupt starts and endings, making clips sound polished and professional.
Fade out one track and fade in the next for seamless playlist listening.
Gently bring background music in and out under a speaker without jarring cuts.
Exponential fades sound most natural to human ears because our perception of loudness is logarithmic. Linear fades are simpler and work fine for short durations.
Yes. Set either the fade-in or fade-out duration to zero to skip that fade.
Audio is decoded and processed locally with the Web Audio API. Your files are never uploaded to a server.