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怎样改善Spark-TTS生成语音的自然度和表现力?

2025-08-30 1.7 K

提升TTS语音自然度的实践方案

Spark-TTS的语音自然度可通过以下方法分层优化:

初级方案(无需重新训练)

  • 参数调优三要素::
    – 语速(speed):推荐0.8-1.2范围微调
    – 音调(pitch):男性语音建议0.9-1.1,女性1.1-1.3
    – 停顿调节:在文本中添加标签
  • Preprocessing Optimization:清理输入文本的异常符号,英文添加音标注释

进阶方案(需训练数据)

  • 数据集增强:收集包含情感表达的音频样本(建议每风格200+条)
  • Prosody标记:在训练文本中添加[高兴][悲伤]等情感标签
  • 混合训练技巧:先用5小时通用语音预训练,再用1小时目标风格微调

推荐使用Praat软件分析生成的波形图,重点优化基频(F0)和能量(Energy)参数。

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