自定义音频效果不佳

**Summary[问题简述（一句话）]**
A clear and concise description of what the issue is.
模型是能够跑通的，但是测试自己提供的音频时，合成的效果对比示例的音频差距好大，想问一下输入的音频是不是有什么处理。

**Env & To Reproduce[复现与环境]**
描述你用的环境、代码版本、模型

**Screenshots[截图（如有）]**
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No files, tests, entry points, environment, code version, model details, or audio-processing steps are provided. Start by collecting the missing environment and reproduction details, then compare the custom audio with the example audio and identify whether preprocessing differs. Done means a reproducible cause and an agreed, specific change are documented.

Written by the indexing model from the issue text.