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<h2>
<span class="refentrytitle">mirror</span>
</h2>
<p>mirror —
Reflects the signal that exceeds the low and high thresholds.
</p>
</div>
<div class="refsect1">
<a id="idm281472913344328"></a>
<h2>Description</h2>
<p>
Reflects the signal that exceeds the low and high thresholds.
</p>
</div>
<div class="refsect1">
<a id="idm281472913286008"></a>
<h2>Syntax</h2>
<pre class="synopsis">ares <span class="command"><strong>mirror</strong></span> asig, klow, khigh</pre>
<pre class="synopsis">ires <span class="command"><strong>mirror</strong></span> isig, ilow, ihigh</pre>
<pre class="synopsis">kres <span class="command"><strong>mirror</strong></span> ksig, klow, khigh</pre>
</div>
<div class="refsect1">
<a id="idm281472913281048"></a>
<h2>Initialization</h2>
<p>
<span class="emphasis"><em>isig</em></span> -- input signal
</p>
<p>
<span class="emphasis"><em>ilow</em></span> -- low threshold
</p>
<p>
<span class="emphasis"><em>ihigh</em></span> -- high threshold
</p>
</div>
<div class="refsect1">
<a id="idm281472913277752"></a>
<h2>Performance</h2>
<p>
<span class="emphasis"><em>xsig</em></span> -- input signal
</p>
<p>
<span class="emphasis"><em>klow</em></span> -- low threshold
</p>
<p>
<span class="emphasis"><em>khigh</em></span> -- high threshold
</p>
<p>
<span class="emphasis"><em>mirror</em></span> <span class="quote">“<span class="quote">reflects</span>”</span> the signal that exceeds the low and high thresholds.
</p>
<p>
This opcode is useful in several situations, such as table indexing or for clipping and modeling a-rate, i-rate or k-rate signals.
</p>
</div>
<div class="refsect1">
<a id="idm281472913272696"></a>
<h2>Examples</h2>
<p>
Here is an example of the mirror opcode. It uses the file <a class="ulink" href="examples/mirror.csd" target="_top"><em class="citetitle">mirror.csd</em></a>.
</p>
<div class="example">
<a id="idm281472913270840"></a>
<p class="title">
<strong>Example 565. Example of the mirror opcode.</strong>
</p>
<div class="example-contents">
<p>See the sections <a class="link" href="UsingRealTime.html" title="Real-Time Audio"><em class="citetitle">Real-time Audio</em></a> and <a class="link" href="CommandFlags.html" title="Csound command line"><em class="citetitle">Command Line Flags</em></a> for more information on using command line flags.</p>
<div class="refsect1">
<a id="idm281472737180520"></a>
<pre class="programlisting">
<span class="nt"><CsoundSynthesizer></span>
<span class="nt"><CsOptions></span>
<span class="c1">; Select audio/midi flags here according to platform</span>
-odac <span class="c1">;;;realtime audio out</span>
<span class="c1">;-iadc ;;;uncomment -iadc if realtime audio input is needed too</span>
<span class="c1">; For Non-realtime ouput leave only the line below:</span>
<span class="c1">; -o mirror.wav -W ;;; for file output any platform</span>
<span class="nt"></CsOptions></span>
<span class="nt"><CsInstruments></span>
<span class="vg">sr</span> <span class="o">=</span> <span class="mi">44100</span>
<span class="vg">ksmps</span> <span class="o">=</span> <span class="mi">32</span>
<span class="vg">0dbfs</span> <span class="o">=</span> <span class="mi">1</span>
<span class="vg">nchnls</span> <span class="o">=</span> <span class="mi">2</span>
<span class="kd">instr</span> <span class="nf">1</span> <span class="c1">; Limit / Mirror / Wrap</span>
i<span class="n">gain</span> <span class="o">=</span> <span class="nb">p4</span> <span class="c1">;gain</span>
i<span class="n">levl1</span> <span class="o">=</span> <span class="nb">p5</span> <span class="c1">; + level</span>
i<span class="n">levl2</span> <span class="o">=</span> <span class="nb">p6</span> <span class="c1">; - level</span>
i<span class="n">mode</span> <span class="o">=</span> <span class="nb">p7</span> <span class="c1">;1 = limit, 2 = mirror, 3 = wrap</span>
a<span class="n">in</span> <span class="nb">soundin</span> <span class="s">"fox.wav"</span>
a<span class="n">in</span> <span class="o">=</span> a<span class="n">in</span><span class="o">*</span>i<span class="n">gain</span>
<span class="k">if</span> i<span class="n">mode</span> <span class="o">=</span> <span class="mi">1</span> <span class="k">goto</span> <span class="nl">limit</span>
<span class="k">if</span> i<span class="n">mode</span> <span class="o">=</span> <span class="mi">2</span> <span class="k">goto</span> <span class="nl">mirror</span>
a<span class="n">sig</span> <span class="nb">wrap</span> a<span class="n">in</span><span class="p">,</span> i<span class="n">levl2</span><span class="p">,</span> i<span class="n">levl1</span>
<span class="k">goto</span> <span class="nl">outsignal</span>
<span class="nl">limit</span><span class="p">:</span>
a<span class="n">sig</span> <span class="nb">limit</span> a<span class="n">in</span><span class="p">,</span> i<span class="n">levl2</span><span class="p">,</span> i<span class="n">levl1</span>
<span class="k">goto</span> <span class="nl">outsignal</span>
<span class="nl">mirror</span><span class="p">:</span>
a<span class="n">sig</span> <span class="nb">mirror</span> a<span class="n">in</span><span class="p">,</span> i<span class="n">levl2</span><span class="p">,</span> i<span class="n">levl1</span>
<span class="nl">outsignal</span><span class="p">:</span>
<span class="nb">outs</span> a<span class="n">sig</span><span class="o">*</span><span class="mf">.5</span><span class="p">,</span> a<span class="n">sig</span><span class="o">*</span><span class="mf">.5</span> <span class="c1">;mind your speakers</span>
<span class="kd">endin</span>
<span class="nt"></CsInstruments></span>
<span class="nt"><CsScore></span>
<span class="c1">; Gain +Levl -Levl Mode</span>
<span class="nb">i</span><span class="mi">1</span> <span class="mi">0</span> <span class="mi">3</span> <span class="mf">4.00</span> <span class="mf">.25</span> <span class="o">-</span><span class="mf">1.00</span> <span class="mi">1</span> <span class="c1">;limit</span>
<span class="nb">i</span><span class="mi">1</span> <span class="mi">4</span> <span class="mi">3</span> <span class="mf">4.00</span> <span class="mf">.25</span> <span class="o">-</span><span class="mf">1.00</span> <span class="mi">2</span> <span class="c1">;mirror</span>
<span class="nb">i</span><span class="mi">1</span> <span class="mi">8</span> <span class="mi">3</span> <span class="mf">4.00</span> <span class="mf">.25</span> <span class="o">-</span><span class="mf">1.00</span> <span class="mi">3</span> <span class="c1">;wrap</span>
<span class="nb">e</span>
<span class="nt"></CsScore></span>
<span class="nt"></CsoundSynthesizer></span>
</pre>
</div>
</div>
</div>
<p><br class="example-break" />
</p>
</div>
<div class="refsect1">
<a id="idm281472913266552"></a>
<h2>See Also</h2>
<p>
<a class="link" href="limit.html" title="limit"><em class="citetitle">limit</em></a>,
<a class="link" href="wrap.html" title="wrap"><em class="citetitle">wrap</em></a>
</p>
</div>
<div class="refsect1">
<a id="idm281472913263544"></a>
<h2>Credits</h2>
<p>
</p>
<table border="0" summary="Simple list" class="simplelist">
<tr>
<td>Author: Gabriel Maldonado</td>
</tr>
<tr>
<td>Italy</td>
</tr>
</table>
<p>
</p>
<p>New in Csound version 3.49</p>
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