<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>次级路径 on Mi&amp;Bee Blog</title><link>/tags/%E6%AC%A1%E7%BA%A7%E8%B7%AF%E5%BE%84/</link><description>Recent content in 次级路径 on Mi&amp;Bee Blog</description><generator>Hugo -- gohugo.io</generator><language>zh-CN</language><managingEditor>蓝宝石的傻话</managingEditor><lastBuildDate>Mon, 11 May 2026 10:00:00 +0800</lastBuildDate><atom:link href="/tags/%E6%AC%A1%E7%BA%A7%E8%B7%AF%E5%BE%84/rss.xml" rel="self" type="application/rss+xml"/><item><title>FXLMS 与主动降噪系统架构</title><link>/posts/physical-world/fxlms-anc-architecture/</link><pubDate>Mon, 11 May 2026 10:00:00 +0800</pubDate><guid>/posts/physical-world/fxlms-anc-architecture/</guid><description>&lt;p&gt;主动降噪（ANC, Active Noise Control）的核心思路是用扬声器发出一个与噪声相位相反、幅值相同的声波，通过相消干涉抵消掉目标区域的噪声。落地到硬件系统，需要解决两个问题：用什么传感器感知噪声，以及用哪种控制策略生成抗噪声。这两点决定了 ANC 系统的架构分类——前馈、反馈和混合式。&lt;/p&gt;</description></item></channel></rss>