X2-NativeCursor: Token-Level Text Progress Tracking for Streaming Incremental TTS
Researchers introduce X2-NativeCursor, a mechanism that lets incremental-text streaming TTS systems track which part of the input is currently being spoken. Since text usually arrives ahead of the audio, arrival timing alone cannot indicate spoken progress, so the method provides a token-level cursor for alignment. This supports features like synchronized highlighting, interruption handling, and real-time dialogue-history updates in speech applications.