檢視时频分析的原始碼

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|<center>'''时频分析'''<br><img
src="https://gimg2.baidu.com/image_search/src=http%3A%2F%2Fupload-images.jianshu.io%2Fupload_images%2F13795760-35ac32f74f982dc3.png&refer=http%3A%2F%2Fupload-images.jianshu.io&app=2002&size=f9999,10000&q=a80&n=0&g=0n&fmt=auto?sec=1658845757&t=2c503c007c8ed6a9690d42e476bc3f43" width="280"></center><small>  圖片來自百度</small> 
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'''时频分布'''是一项让我们能够同时观察一个讯号的时域和频域资讯的工具，而时频分析就是在分析时频分布。传统上，我们常用[[傅里叶变换]]来观察一个讯号的频谱。然而，这样的方法不适合用来分析一个频率会随着时间而改变的讯号。

*中文名:[[时频分析]]

*外文名:Joint Time-Frequency Analysis

*简    介:时频联合域分析

*概    述：设计时间和频率的联合函数

*重要性：信号时域和频域之间具有紧密联系