通过matlab设计滤波器给单片机编程提供参数
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https://zhuanlan.zhihu.com/p/629272538#:~:text=%E4%B8%A4%E8%80%85%E6%98%AF%E7%AD%89%E4%BB%B7%E7%9A%84%EF%BC%8C%E5%8F%AA%E6%98%AF%E7%BB%93%E6%9E%84%E4%B8%8A%E7%9A%84%E4%B8%8D%E5%90%8C%E3%80%82%20%E4%BB%A52%E9%98%B6%E4%B8%BA%E4%BE%8B%EF%BC%8C%E5%8F%AF%E4%BB%A5%E7%9C%8B%E5%87%BA%EF%BC%8C%E7%9B%B4%E6%8E%A5I%E5%9E%8B%E9%9C%80%E8%A6%81%E8%AE%B0%E5%BD%95x%20%28k-1%29,%E3%80%81x%20%28k-2%29%E3%80%81y%20%28k-1%29%E3%80%81y%20%28k-2%294%E4%B8%AA%E5%8E%86%E5%8F%B2%E5%80%BC%EF%BC%8C%E8%80%8C%E7%9B%B4%E6%8E%A5II%E5%9E%8B%E8%AE%B0%E5%BD%953%E4%B8%AA%E5%8D%B3%E5%8F%AF%EF%BC%8C%E5%90%8E%E8%80%85%E5%8F%AF%E4%BB%A5%E9%99%8D%E4%BD%8E%E7%A9%BA%E9%97%B4%E5%A4%8D%E6%9D%82%E5%BA%A6%EF%BC%8C%E6%89%80%E4%BB%A5%E7%9B%B4%E6%8E%A5II%E5%9E%8B%E5%BA%94%E7%94%A8%E6%9B%B4%E5%B9%BF%E3%80%82