能不能模仿老年人发音

**Summary[问题简述（一句话）]**
能不能模仿老年人声音，我发现模仿出来的声音都是年轻人声音。感觉这东西是根据一个多数人喜欢的声音作为主线的。所有声音都往哪上面靠了。根本就不是人工智能

**Env & To Reproduce[复现与环境]**
免安装版不知道什么版本

**Screenshots[截图（如有）]**
If applicable, add screenshots to help

The report names no source file, test, model, or reproducible version; it only says the portable build produces youthful-sounding voices. Start by identifying the portable build's voice-generation entry point and model configuration, then reproduce the result with a documented voice sample. The requested elderly-voice behavior and acceptance criteria need clarification before completion can be assessed.

Written by the indexing model from the issue text.