> For the complete documentation index, see [llms.txt](https://cifar.gitbook.io/note/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cifar.gitbook.io/note/shu-xue/fu-li-ye-bian-huan.md).

# 傅里叶变换

![](/files/-MiUX2Oi6yvgoC2b2yLG)

[快速傅里叶变换](https://www.bilibili.com/video/BV1N94y147uY/)