https://blog.wongcw.com/2021/04/27/%e8%ab%be%e5%9f%ba%e4%ba%9ex50%e5%8f%af%e8%83%bd%e5%b8%b6%e4%be%861-08%e5%84%84%e5%83%8f%e7%b4%a0%e7%9a%84%e6%94%9d%e5%83%8f%e9%a0%ad%e5%92%8c120hz%e7%9a%84%e9%a1%af%e7%a4%ba%e5%b1%8f/