B站Index团队开源文本转语音系统IndexTTS-2.0，该系统具备情感可控和时长可调两大特点，标志着零样本TTS技术实现重要突破。通过引入时间编码机制等核心创新，有效解决了语音合成领域的情感表达和时长控制难题，推动技术实用化进程。
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