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<div class="moz-cite-prefix">On 18/9/2018 5:15 AM, Rafael Guerra
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:VI1PR04MB41097F4F5B81A99DEA06965ACC1E0@VI1PR04MB4109.eurprd04.prod.outlook.com">
<pre wrap="">Chin Luh: good to know but how does that solve Claus Futtrup specific problem?
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<p>just notice that the answer similar as the one Tim provided, just
a bit confused on Claus' comment on the "random" data:</p>
<div class="moz-cite-prefix">On 17/9/2018 1:13 AM, Claus Futtrup
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:6485d137-6e1b-65fe-11f3-6521a604d3ef@gmail.com">What I
like about the Matlab example is that random data is generated to
represent the impulse response, so this represents "any data" ...
I need that. If Scilab cannot do it, it's OK.
</blockquote>
<p>Do you refer this "random" data to the example provided?</p>
<pre class="language-matlab" style="box-sizing: border-box; overflow: auto; font-family: Menlo, Monaco, Consolas, "Courier New", monospace; font-size: 13px; display: block; padding: 9.5px; margin: 0px 0px 21px; line-height: 1.42857; color: rgb(51, 51, 51); word-break: normal; overflow-wrap: normal; background-color: rgb(245, 245, 245); border: 1px solid rgb(204, 204, 204); border-radius: 4px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;">h = rand(1,64); % impulse response <-- This?
<span style="color:rgb(0,0,0);">fs</span> <span style="color:rgb(92,92,92);">=</span> <span style="color:rgb(188,143,143);">1000</span><span style="color:rgb(0,0,0);">;</span>
<span style="color:rgb(0,0,0);">Nfft</span> <span style="color:rgb(92,92,92);">=</span> <span style="color:rgb(188,143,143);">128</span><span style="color:rgb(0,0,0);">;</span>
<span style="color:rgb(74,85,219);">[</span><span style="color:rgb(0,0,0);">H</span><span style="color:rgb(0,0,0);">,</span><span style="color:rgb(0,0,0);">F</span><span style="color:rgb(74,85,219);">]</span> <span style="color:rgb(92,92,92);">=</span> <span style="color:rgb(0,0,0);">freqz</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(0,0,0);">h</span><span style="color:rgb(0,0,0);">,</span><span style="color:rgb(188,143,143);">1</span><span style="color:rgb(0,0,0);">,</span><span style="color:rgb(0,0,0);">Nfft</span><span style="color:rgb(0,0,0);">,</span><span style="color:rgb(0,0,0);">fs</span><span style="color:rgb(74,85,219);">)</span><span style="color:rgb(0,0,0);">;</span>
<span style="color:rgb(174,92,176);text-decoration:underline;">plot</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(0,0,0);">F</span><span style="color:rgb(0,0,0);">,</span><span style="color:rgb(0,0,0);">H</span><span style="color:rgb(74,85,219);">)</span><span style="color:rgb(0,0,0);">;</span> <span style="color:rgb(0,0,0);">grid</span> <span style="color:rgb(0,0,0);">on</span><span style="color:rgb(0,0,0);">;</span></pre>
<p>If so, the equivalent scilab code would be as below:</p>
<pre style="font-family:Monospaced;font-style:normal;font-size:16.0;"><span style="color:rgb(0,0,0);">h</span> <span style="color:rgb(92,92,92);">=</span> <span style="color:rgb(50,185,185);">rand</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(188,143,143);">1</span><span style="color:rgb(0,0,0);">,</span><span style="color:rgb(188,143,143);">64</span><span style="color:rgb(74,85,219);">)</span><span style="color:rgb(0,0,0);">;</span>
<span style="color:rgb(0,0,0);">fs</span> <span style="color:rgb(92,92,92);">=</span> <span style="color:rgb(188,143,143);">1000</span><span style="color:rgb(0,0,0);">;</span>
<span style="color:rgb(0,0,0);">b</span> <span style="color:rgb(92,92,92);">=</span> <span style="color:rgb(50,185,185);">poly</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(0,0,0);">h</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(255,170,0);">$</span><span style="color:rgb(255,170,0);">:</span><span style="color:rgb(92,92,92);">-</span><span style="color:rgb(188,143,143);">1</span><span style="color:rgb(255,170,0);">:</span><span style="color:rgb(188,143,143);">1</span><span style="color:rgb(74,85,219);">)</span><span style="color:rgb(0,0,0);">,</span><span style="color:rgb(188,143,143);">"</span><span style="color:rgb(188,143,143);">z</span><span style="color:rgb(188,143,143);">"</span><span style="color:rgb(0,0,0);">,</span><span style="color:rgb(188,143,143);">"</span><span style="color:rgb(188,143,143);">coeff</span><span style="color:rgb(188,143,143);">"</span><span style="color:rgb(74,85,219);">)</span><span style="color:rgb(0,0,0);">;</span>
<span style="color:rgb(0,0,0);">a</span> <span style="color:rgb(92,92,92);">=</span> <span style="color:rgb(218,112,214);">%z</span><span style="color:rgb(92,92,92);">^</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(50,185,185);">length</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(0,0,0);">h</span><span style="color:rgb(74,85,219);">)</span><span style="color:rgb(92,92,92);">-</span><span style="color:rgb(188,143,143);">1</span><span style="color:rgb(74,85,219);">)</span><span style="color:rgb(0,0,0);">;</span>
<span style="color:rgb(0,0,0);">Gz</span> <span style="color:rgb(92,92,92);">=</span> <span style="color:rgb(174,92,176);text-decoration:underline;">syslin</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(188,143,143);">'</span><span style="color:rgb(188,143,143);">d</span><span style="color:rgb(188,143,143);">'</span><span style="color:rgb(0,0,0);">,</span><span style="color:rgb(0,0,0);">b</span><span style="color:rgb(0,0,0);">,</span><span style="color:rgb(0,0,0);">a</span><span style="color:rgb(74,85,219);">)</span><span style="color:rgb(0,0,0);">;</span>
<span style="color:rgb(0,0,0);">Gz</span><span style="color:rgb(92,92,92);">.</span><span style="color:rgb(170,170,170);">dt</span> <span style="color:rgb(92,92,92);">=</span> <span style="color:rgb(188,143,143);">1</span><span style="color:rgb(92,92,92);">/</span><span style="color:rgb(0,0,0);">fs</span><span style="color:rgb(0,0,0);">;</span>
<span style="color:rgb(74,85,219);">[</span><span style="color:rgb(0,0,0);">F</span><span style="color:rgb(0,0,0);">,</span><span style="color:rgb(0,0,0);">H</span><span style="color:rgb(74,85,219);">]</span><span style="color:rgb(92,92,92);">=</span><span style="color:rgb(174,92,176);text-decoration:underline;">repfreq</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(0,0,0);">Gz</span><span style="color:rgb(0,0,0);">,</span><span style="color:rgb(188,143,143);">0</span><span style="color:rgb(0,0,0);">,</span><span style="color:rgb(188,143,143);">500</span><span style="color:rgb(0,0,0);">,</span><span style="color:rgb(188,143,143);">0.01</span><span style="color:rgb(74,85,219);">)</span><span style="color:rgb(0,0,0);">;</span>
<span style="color:rgb(174,92,176);text-decoration:underline;">plot</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(0,0,0);">F</span><span style="color:rgb(0,0,0);">,</span><span style="color:rgb(0,0,0);">H</span><span style="color:rgb(74,85,219);">)</span><span style="color:rgb(0,0,0);">;
Do note that I replace the last part of semilogx plot and replace with plot for more simple codes.
</span></pre>
<pre class="moz-signature" cols="72">--
Tan Chin Luh
Trity Technologies Sdn Bhd
Tel : +603 80637737
HP : +6013 3691728
</pre>
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