Warper by Neo Dub Studio

At its core, Warper is a time-stretch and pitch-shift DSP engine. Four dedicated algorithms keep each type of sound intact: Voice for dialogue and vocals, Peak for sharp attacks, FX for noise and texture, and Tone for harmonic detail.

On top of that engine, Warper adds automatic alignment to a guide track, so ADR, dubbing and vocal doubles lock to the original performance. In Warp mode, you can also place warp markers by hand and drag the audio between them for precise, manual timing. Pitch can be shifted by a fixed amount or drawn as a curve over time. It also handles frame-rate conversion in a single step.