NetEase Smart Enterprise Tech+

Aug 5, 2021 · Artificial Intelligence

How Real-Time Voice Changing Works: From Tremolo to Gender‑Swap Algorithms

This article explains the demand for fun voice‑changing effects in live streaming and voice chat, introduces common audio effects such as Tremolo, Flanging, and Distortion, and details several real‑time pitch‑preserving algorithms—including OLA, WSOLA, PSOLA, and Phase‑Vocoder—used by NetEase Cloud Communication to deliver high‑quality, privacy‑preserving voice transformations.