Overview
- Trial operations will replace onboard studio clips with text-to-speech on the three lines after nearly three decades of the same recorded voice.
- Seoul Metro said relying on one individual made it hard to update audio files and that a more stable system was needed.
- The AI system is intended to support faster changes for new scripts or station-name updates and to closely replicate natural human intonation.
- AI announcements already run on the Shinbundang, Sillim and Gimpo Goldline light rail lines, offering a model within the network.
- Kang Hee-sun, the long-time Korean-language voice of the subway, is stepping down as she receives treatment for colon cancer.