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<div class="moz-cite-prefix">On 13/04/2013 02:49, Michael Dunn
wrote:<br>
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<blockquote cite="mid:CD8E20EE.90CE%25michael.dunn@ubm.com"
type="cite">
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<div style="color: rgb(0, 0, 0); font-family: Calibri,
sans-serif; font-size: 14px; ">Hi. Are there any resources
or tutorials or references out there that would be helpful
to a newbie to SciLab filtering functions? I just want to
filter some data – at this point, I don't even care what
kind of filter – just want to learn how!</div>
<div style="color: rgb(0, 0, 0); font-family: Calibri,
sans-serif; font-size: 14px; "><br>
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<div style="color: rgb(0, 0, 0); font-family: Calibri,
sans-serif; font-size: 14px; ">At first, I thought I'd try
an IIR, but I couldn't figure out how to generate the
coefficients.</div>
<div style="font-family: Calibri, sans-serif; ">
<pre style="font-family: Monospaced; "><span style="color: rgb(100, 174, 100); font-style: italic; ">//y = filter(num,den,x) </span>
</pre>
<pre style="font-family: Monospaced; ">Then, I stumbled onto ffilt, which seems to generate FIR coefs, but where's the actual FIR filter function? Is it "convol"? I tried this:
<span style="font-style: normal; color: rgb(174, 92, 176); text-decoration: underline; ">plot</span><span style="font-style: normal; color: rgb(74, 85, 219); ">(</span><span style="font-style: normal; color: rgb(50, 185, 185); ">fft</span><span style="font-style: normal; color: rgb(74, 85, 219); ">(</span><span style="font-style: normal; color: rgb(174, 92, 176); text-decoration: underline; ">convol</span><span style="font-style: normal; color: rgb(74, 85, 219); ">(</span><span style="font-style: normal; color: rgb(174, 92, 176); text-decoration: underline; ">ffilt</span><span style="font-style: normal; color: rgb(74, 85, 219); ">(</span><span style="font-style: normal; color: rgb(188, 143, 143); ">"</span><span style="font-style: normal; color: rgb(188, 143, 143); ">hp</span><span style="font-style: normal; color: rgb(188, 143, 143); ">"</span><span style="font-style: normal; color: rgb(0, 0, 0); ">,</span><span style="font-style: normal; color: rgb(188, 143, 143); ">40</sp!
an><span
style="font-style: normal; color: rgb(0, 0, 0); ">,</span><span style="font-style: normal; color: rgb(188, 143, 143); ">100</span><span style="font-style: normal; color: rgb(74, 85, 219); ">)</span><span style="font-style: normal; color: rgb(0, 0, 0); ">,</span><span style="font-style: normal; color: rgb(0, 0, 0); ">r</span><span style="font-style: normal; color: rgb(74, 85, 219); ">)</span><span style="font-style: normal; color: rgb(74, 85, 219); ">)</span><span style="font-style: normal; color: rgb(74, 85, 219); ">)</span></pre>
<pre style="font-family: Monospaced; ">It does <i>something, </i>but I'm not sure what. Am I getting close?</pre>
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Hi<br>
<br>
I am not used ot filters, but I know there is a how to here:
<a class="moz-txt-link-freetext" href="http://help.scilab.org/docs/5.4.1/en_US/DesignEllipticFilter.html">http://help.scilab.org/docs/5.4.1/en_US/DesignEllipticFilter.html</a>
(this is available in french also)<br>
from there, i suggest you navigate throught the "see also sections"<br>
<br>
you can also have a look here:
<a class="moz-txt-link-freetext" href="http://help.scilab.org/docs/5.4.1/en_US/section_dbbac6be408104de3049eddefaf6b9c9.html">http://help.scilab.org/docs/5.4.1/en_US/section_dbbac6be408104de3049eddefaf6b9c9.html</a><br>
<br>
the content of this webpage is also available in your computer, type
"help" in the console and navigate.<br>
<br>
I hope the "how to" (1st link) will help you<br>
<br>
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