Beijing Timedomain Technology Co., Ltd. (北京时域科技有限公司) is a Chinese AI company specializing in emotionally expressive singing voice synthesis. Its core offering is ACE Studio, an AI-powered vocal synthesis engine that enables users—especially non-professionals—to generate high-quality, lifelike singing vocals from text and melody inputs. The company focuses on empowering virtual human experiences through emotionally rich AI voice technologies and offers tools for music creators, including downloadable applications for Windows and macOS. Their main platforms are accessible at timedomain.cn and acestudio.ai. Despite occasional accessibility issues on their homepage, ACE Studio remains central to their product ecosystem and has garnered significant attention among digital music and virtual singer communities.