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<div class="refentry" title="mirror">
<a id="mirror"></a>
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<a id="IndexMirror" class="indexterm"></a>
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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" title="Description">
<a id="idp31765208"></a>
<h2>Description</h2>
<p>
Reflects the signal that exceeds the low and high thresholds.
</p>
</div>
<div class="refsect1" title="Syntax">
<a id="idp31803264"></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" title="Initialization">
<a id="idp31805720"></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" title="Performance">
<a id="idp31807424"></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" title="Examples">
<a id="idp31810136"></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="idp31811104"></a>
<p class="title">
<strong>Example 481. 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>
<pre class="programlisting">
<span class="csdtag"><CsoundSynthesizer></span>
<span class="csdtag"><CsOptions></span>
<span class="comment">; Select audio/midi flags here according to platform</span>
-odac <span class="comment">;;;realtime audio out</span>
<span class="comment">;-iadc ;;;uncomment -iadc if realtime audio input is needed too</span>
<span class="comment">; For Non-realtime ouput leave only the line below:</span>
<span class="comment">; -o mirror.wav -W ;;; for file output any platform</span>
<span class="csdtag"></CsOptions></span>
<span class="csdtag"><CsInstruments></span>
<span class="ohdr">sr</span> <span class="op">=</span> 44100
<span class="ohdr">ksmps</span> <span class="op">=</span> 32
<span class="ohdr">0dbfs</span> <span class="op">=</span> 1
<span class="ohdr">nchnls</span> <span class="op">=</span> 2
<span class="oblock">instr</span> 1 <span class="comment">; Limit / Mirror / Wrap</span>
igain <span class="op">=</span> p4 <span class="comment">;gain</span>
ilevl1 <span class="op">=</span> p5 <span class="comment">; + level</span>
ilevl2 <span class="op">=</span> p6 <span class="comment">; - level</span>
imode <span class="op">=</span> p7 <span class="comment">;1 = limit, 2 = mirror, 3 = wrap</span>
ain <span class="opc">soundin</span> "fox.wav"
ain <span class="op">=</span> ain<span class="op">*</span>igain
<span class="octrl">if</span> imode <span class="op">=</span> 1 <span class="octrl">goto</span> <span class="olabel">limit</span>
<span class="octrl">if</span> imode <span class="op">=</span> 2 <span class="octrl">goto</span> <span class="olabel">mirror</span>
asig <span class="opc">wrap</span> ain, ilevl2, ilevl1
<span class="octrl">goto</span> <span class="olabel">outsignal</span>
<span class="olabel">limit</span><span class="op">:</span>
asig <span class="olabel">limit</span> ain, ilevl2, ilevl1
<span class="octrl">goto</span> <span class="olabel">outsignal</span>
<span class="olabel">mirror</span><span class="op">:</span>
asig <span class="olabel">mirror</span> ain, ilevl2, ilevl1
<span class="olabel">outsignal</span><span class="op">:</span>
<span class="opc">outs</span> asig<span class="op">*</span>.5, asig<span class="op">*</span>.5 <span class="comment">;mind your speakers</span>
<span class="oblock">endin</span>
<span class="csdtag"></CsInstruments></span>
<span class="csdtag"><CsScore></span>
<span class="comment">; Gain +Levl -Levl Mode</span>
<span class="stamnt">i</span>1 0 3 4.00 .25 -1.00 1 <span class="comment">;limit</span>
<span class="stamnt">i</span>1 4 3 4.00 .25 -1.00 2 <span class="comment">;mirror</span>
<span class="stamnt">i</span>1 8 3 4.00 .25 -1.00 3 <span class="comment">;wrap</span>
<span class="stamnt">e</span>
<span class="csdtag"></CsScore></span>
<span class="csdtag"></CsoundSynthesizer></span>
</pre>
</div>
</div>
<p><br class="example-break" />
</p>
</div>
<div class="refsect1" title="See Also">
<a id="idp31813376"></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" title="Credits">
<a id="idp31814872"></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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