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<TITLE>The Synthesis ToolKit in C++ (STK)</TITLE>
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<a class="qindex" href="index.html">Home</a> <a class="qindex" href="information.html">Information</a> <a class="qindex" href="classes.html">Classes</a> <a class="qindex" href="download.html">Download</a> <a class="qindex" href="usage.html">Usage</a> <a class="qindex" href="maillist.html">Mail List</a> <a class="qindex" href="system.html">Requirements</a> <a class="qindex" href="links.html">Links</a> <a class="qindex" href="faq.html">FAQ</a> <a class="qindex" href="tutorial.html">Tutorial</a></CENTER>
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<!-- Generated by Doxygen 1.5.8 -->
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<div class="navpath"><a class="el" href="namespacestk.html">stk</a>::<a class="el" href="classstk_1_1Echo.html">Echo</a>
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<h1>stk::Echo Class Reference</h1><!-- doxytag: class="stk::Echo" --><!-- doxytag: inherits="stk::Effect" -->STK echo effect class.
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<a href="#_details">More...</a>
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<p>
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<code>#include <<a class="el" href="Echo_8h-source.html">Echo.h</a>></code>
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<div class="dynheader">
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Inheritance diagram for stk::Echo:</div>
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<div class="dynsection">
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<p><center><img src="classstk_1_1Echo.png" usemap="#stk::Echo_map" border="0" alt=""></center>
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<map name="stk::Echo_map">
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<area href="classstk_1_1Effect.html" alt="stk::Effect" shape="rect" coords="0,56,66,80">
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<area href="classstk_1_1Stk.html" alt="stk::Stk" shape="rect" coords="0,0,66,24">
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</map>
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</div>
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<p>
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<a href="classstk_1_1Echo-members.html">List of all members.</a><table border="0" cellpadding="0" cellspacing="0">
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<tr><td></td></tr>
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<tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classstk_1_1Echo.html#5f3320986d5c9b02ad10663ff11b6505">Echo</a> (unsigned long maximumDelay=(unsigned long) Stk::sampleRate())</td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Class constructor, taking the longest desired delay length (one second default value). <a href="#5f3320986d5c9b02ad10663ff11b6505"></a><br></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="253e0f8e4c628b431fdfcb6d880548c2"></a><!-- doxytag: member="stk::Echo::clear" ref="253e0f8e4c628b431fdfcb6d880548c2" args="()" -->
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void </td><td class="memItemRight" valign="bottom"><a class="el" href="classstk_1_1Echo.html#253e0f8e4c628b431fdfcb6d880548c2">clear</a> ()</td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Reset and clear all internal state. <br></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="421a6f5f06f8e7df09edd179d397da7d"></a><!-- doxytag: member="stk::Echo::setMaximumDelay" ref="421a6f5f06f8e7df09edd179d397da7d" args="(unsigned long delay)" -->
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void </td><td class="memItemRight" valign="bottom"><a class="el" href="classstk_1_1Echo.html#421a6f5f06f8e7df09edd179d397da7d">setMaximumDelay</a> (unsigned long delay)</td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Set the maximum delay line length in samples. <br></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="e58ea12a2864481cb7049c10810867ce"></a><!-- doxytag: member="stk::Echo::setDelay" ref="e58ea12a2864481cb7049c10810867ce" args="(unsigned long delay)" -->
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void </td><td class="memItemRight" valign="bottom"><a class="el" href="classstk_1_1Echo.html#e58ea12a2864481cb7049c10810867ce">setDelay</a> (unsigned long delay)</td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Set the delay line length in samples. <br></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="00a2a5949133a06680b026db7b21cc51"></a><!-- doxytag: member="stk::Echo::lastOut" ref="00a2a5949133a06680b026db7b21cc51" args="(void) const " -->
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StkFloat </td><td class="memItemRight" valign="bottom"><a class="el" href="classstk_1_1Echo.html#00a2a5949133a06680b026db7b21cc51">lastOut</a> (void) const </td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Return the last computed output value. <br></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="4cfb2c2dd350717cd8151749d3a32f91"></a><!-- doxytag: member="stk::Echo::tick" ref="4cfb2c2dd350717cd8151749d3a32f91" args="(StkFloat input)" -->
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StkFloat </td><td class="memItemRight" valign="bottom"><a class="el" href="classstk_1_1Echo.html#4cfb2c2dd350717cd8151749d3a32f91">tick</a> (StkFloat input)</td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Input one sample to the effect and return one output. <br></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="classstk_1_1StkFrames.html">StkFrames</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="classstk_1_1Echo.html#efe863b7aa43d6a94c2a56bd31a30e7d">tick</a> (<a class="el" href="classstk_1_1StkFrames.html">StkFrames</a> &frames, unsigned int channel=0)</td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Take a channel of the <a class="el" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">StkFrames</a> object as inputs to the effect and replace with corresponding outputs. <a href="#efe863b7aa43d6a94c2a56bd31a30e7d"></a><br></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="classstk_1_1StkFrames.html">StkFrames</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="classstk_1_1Echo.html#1778a7da06b222afbe9281c886f678d8">tick</a> (<a class="el" href="classstk_1_1StkFrames.html">StkFrames</a> &iFrames, <a class="el" href="classstk_1_1StkFrames.html">StkFrames</a> &oFrames, unsigned int iChannel=0, unsigned int oChannel=0)</td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Take a channel of the <code>iFrames</code> object as inputs to the effect and write outputs to the <code>oFrames</code> object. <a href="#1778a7da06b222afbe9281c886f678d8"></a><br></td></tr>
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</table>
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<hr><a name="_details"></a><h2>Detailed Description</h2>
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STK echo effect class.
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<p>
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This class implements an echo effect.<p>
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by Perry R. Cook and Gary P. Scavone, 1995 - 2009. <hr><h2>Constructor & Destructor Documentation</h2>
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<a class="anchor" name="5f3320986d5c9b02ad10663ff11b6505"></a><!-- doxytag: member="stk::Echo::Echo" ref="5f3320986d5c9b02ad10663ff11b6505" args="(unsigned long maximumDelay=(unsigned long) Stk::sampleRate())" -->
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<td class="memname">stk::Echo::Echo </td>
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<td>(</td>
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<td class="paramtype">unsigned long </td>
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<td class="paramname"> <em>maximumDelay</em> = <code>(unsigned long) Stk::sampleRate()</code> </td>
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<td> ) </td>
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<td></td>
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</table>
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</div>
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<div class="memdoc">
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<p>
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Class constructor, taking the longest desired delay length (one second default value).
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<p>
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The default delay value is set to 1/2 the maximum delay length.
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</div>
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</div><p>
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<hr><h2>Member Function Documentation</h2>
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<a class="anchor" name="efe863b7aa43d6a94c2a56bd31a30e7d"></a><!-- doxytag: member="stk::Echo::tick" ref="efe863b7aa43d6a94c2a56bd31a30e7d" args="(StkFrames &frames, unsigned int channel=0)" -->
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<div class="memitem">
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<table class="memname">
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<td class="memname"><a class="el" href="classstk_1_1StkFrames.html">StkFrames</a> & stk::Echo::tick </td>
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<td>(</td>
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<td class="paramtype"><a class="el" href="classstk_1_1StkFrames.html">StkFrames</a> & </td>
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<td class="paramname"> <em>frames</em>, </td>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">unsigned int </td>
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<td class="paramname"> <em>channel</em> = <code>0</code></td><td> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td><td><code> [inline]</code></td>
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</tr>
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</table>
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<div class="memdoc">
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<p>
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Take a channel of the <a class="el" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">StkFrames</a> object as inputs to the effect and replace with corresponding outputs.
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<p>
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The <a class="el" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">StkFrames</a> argument reference is returned. The <code>channel</code> argument must be less than the number of channels in the <a class="el" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">StkFrames</a> argument (the first channel is specified by 0). However, range checking is only performed if _STK_DEBUG_ is defined during compilation, in which case an out-of-range value will trigger an <a class="el" href="classstk_1_1StkError.html" title="STK error handling class.">StkError</a> exception.
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</div>
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</div><p>
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<a class="anchor" name="1778a7da06b222afbe9281c886f678d8"></a><!-- doxytag: member="stk::Echo::tick" ref="1778a7da06b222afbe9281c886f678d8" args="(StkFrames &iFrames, StkFrames &oFrames, unsigned int iChannel=0, unsigned int oChannel=0)" -->
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname"><a class="el" href="classstk_1_1StkFrames.html">StkFrames</a> & stk::Echo::tick </td>
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<td>(</td>
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<td class="paramtype"><a class="el" href="classstk_1_1StkFrames.html">StkFrames</a> & </td>
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<td class="paramname"> <em>iFrames</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype"><a class="el" href="classstk_1_1StkFrames.html">StkFrames</a> & </td>
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<td class="paramname"> <em>oFrames</em>, </td>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">unsigned int </td>
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<td class="paramname"> <em>iChannel</em> = <code>0</code>, </td>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">unsigned int </td>
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<td class="paramname"> <em>oChannel</em> = <code>0</code></td><td> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td><td><code> [inline]</code></td>
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</table>
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</div>
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<div class="memdoc">
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<p>
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Take a channel of the <code>iFrames</code> object as inputs to the effect and write outputs to the <code>oFrames</code> object.
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<p>
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The <code>iFrames</code> object reference is returned. Each channel argument must be less than the number of channels in the corresponding <a class="el" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">StkFrames</a> argument (the first channel is specified by 0). However, range checking is only performed if _STK_DEBUG_ is defined during compilation, in which case an out-of-range value will trigger an <a class="el" href="classstk_1_1StkError.html" title="STK error handling class.">StkError</a> exception.
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</div>
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</div><p>
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<hr>The documentation for this class was generated from the following file:<ul>
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<li><a class="el" href="Echo_8h-source.html">Echo.h</a></ul>
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</div>
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<HR>
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<table>
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<tr><td><A HREF="http://ccrma.stanford.edu/software/stk/"><I>The Synthesis ToolKit in C++ (STK)</I></A></td></tr>
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<tr><td>©1995-2009 Perry R. Cook and Gary P. Scavone. All Rights Reserved.</td></tr>
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