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数字过滤器设计
原标题:Digital Filter Design Matlab sptool/fdatool

采用什么最佳方法选择马特拉布数字过滤器设计特性与全球数据分析仪的过滤器? 更具体地说,如果我有信号,我如何确定哪些过滤值将产生最佳解决办法。

<>>Example:

我的信号<代码>A:

一种可能的过滤器具有以下特性:

  1. Design Method: FIR, Window
  2. Window Type: Gaussian
  3. Order: 10
  4. Fs: 100 5: Fc: 10

另一种可能的过滤器具有以下特性:

  1. Design Method: FIR, Window
  2. Window Type: Hamming
  3. Order: 7
  4. Fs: 64 5: Fc: 28

过滤器无疑会增加。

我认为,解决办法之一比所有其他解决办法都产生“更好的”答案,这就是我试图找到的解决办法。 我知道,我可以尝试一种简陋的武力方法,但我不会这样做。 请建议采用一种方法选择这种“最佳”解决办法的过滤性。

最佳回答

你们不得不就你想要的信号类型提供一些细节。

根据您使用的过滤器类型,总是有一些权衡。 总的来说,你至少必须向我们提供你感兴趣的频率、切除需求量、计算要求和阶段线性。

总的来说,我将简单地向过滤器上的维基页:

如你可以从网页上看到的那样,有几类过滤器(特别看切比什耶夫、博特适、贝塞尔和埃尔比特模型),试图根据你的需要提供某些特性。 您还应注意到各类过滤器的计算复杂性。

在个人方面,I m lazy,而不是通常在计算上受到限制,因此我这样做:

信号――> FFT-> 乘以预期的频率反应――> FIFT。

问题回答

暂无回答




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