Audio Fade Generator
Apply professional fade in / fade out to audio files entirely in the browser. Drag-and-drop or pick a file, decode with Web Audio API, choose a fade curve (linear, logarithmic, exponential, or S-curve), set fade in / fade out durations (6 presets from 100 ms to 5 s), and re-encode as a 16-bit PCM WAV (pure-JS encoder — no library). Fade gain array generator, per-sample fade applier, fade duration validator, sample-range calculator, ASCII curve visualizer, audio preview before/after, history (localStorage), shareable URL, and summary stats. 100% client-side.
Apply professional fade in / fade out to audio files entirely in the browser. Drag-and-drop or pick a file, decode with Web Audio API, choose a fade curve (linear, logarithmic, exponential, or S-curve), set fade in / fade out durations (6 presets from 100 ms to 5 s), and re-encode as a 16-bit PCM WAV (pure-JS encoder — no library). Fade gain array generator, per-sample fade applier, fade duration validator, sample-range calculator, ASCII curve visualizer, audio preview before/after, history (localStorage), shareable URL, and summary stats. 100% client-side. Everything runs locally in your browser — your data never leaves your device.
How to use
- Enter your input in the tool above.
- Adjust any options to your preference.
- Use the Copy or Download buttons to save the result.
- Everything happens locally — your data never leaves your browser.