From the Sculpto page:
Draw Bezier curves over your audio waveform to create envelope shapes to follow or clip to. Clean errors, sharpen transients, or design entirely new sounds. All in real time, with amazingly low CPU use.
- Clipped peak restoration: easy, smooth and repeatable reshaping of peaks.
- Click removal: Clipping to an envelope allows to edit out unwanted peaks, such as clicks or room noise.
- Transient shaping: Visually design the dynamics of the sound.
- Special effects: Swells, rides and rhythmic re-imposition.
Schwa Sculpto is available for Windows PC and costs $50.00 (all hosts, commercial use license), or $25.00 for a Reaper-only, non-commerical use license version.
Note: Sculpto depends on getting sample position / timeline information from the audio host. Audio editors like Wavelab, Audition, Sound Forge, etc. generally don’t support this.