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233 lines
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<TITLE>The Synthesis ToolKit in C++ (STK)</TITLE>
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<img src="princeton.gif"> <img src="ccrma.gif"> <img src="mcgill.gif"><P>
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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="tutorial.html">Tutorial</a></CENTER>
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<!-- Generated by Doxygen 1.4.4 -->
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<h1>WvIn Class Reference</h1><!-- doxytag: class="WvIn" --><!-- doxytag: inherits="Stk" --><code>#include <<a class="el" href="WvIn_8h-source.html">WvIn.h</a>></code>
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<p>
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<p>Inheritance diagram for WvIn:
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<p><center><img src="classWvIn.png" usemap="#WvIn_map" border="0" alt=""></center>
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<map name="WvIn_map">
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<area href="classStk.html" alt="Stk" shape="rect" coords="82,0,154,24">
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<area href="classFileWvIn.html" alt="FileWvIn" shape="rect" coords="0,112,72,136">
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<area href="classInetWvIn.html" alt="InetWvIn" shape="rect" coords="82,112,154,136">
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<area href="classRtWvIn.html" alt="RtWvIn" shape="rect" coords="164,112,236,136">
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<area href="classWaveLoop.html" alt="WaveLoop" shape="rect" coords="0,168,72,192">
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</map>
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<a href="classWvIn-members.html">List of all members.</a><hr><a name="_details"></a><h2>Detailed Description</h2>
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STK audio input abstract base class.
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<p>
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This class provides common functionality for a variety of audio data input subclasses.<p>
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WvIn supports multi-channel data. It is important to distinguish the <a class="el" href="classWvIn.html#a5">tick()</a> methods, which return samples produced by averaging across sample frames, from the <a class="el" href="classWvIn.html#a7">tickFrame()</a> methods, which return references or pointers to multi-channel sample frames.<p>
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Both interleaved and non-interleaved data is supported via the use of <a class="el" href="classStkFrames.html">StkFrames</a> objects.<p>
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by Perry R. Cook and Gary P. Scavone, 1995 - 2005.
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<p>
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<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"><a class="anchor" name="a0"></a><!-- doxytag: member="WvIn::WvIn" ref="a0" args="()" -->
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</td><td class="memItemRight" valign="bottom"><a class="el" href="classWvIn.html#a0">WvIn</a> ()</td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Default constructor. <br></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a1"></a><!-- doxytag: member="WvIn::~WvIn" ref="a1" args="()" -->
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virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="classWvIn.html#a1">~WvIn</a> ()</td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Class destructor. <br></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a2"></a><!-- doxytag: member="WvIn::getChannels" ref="a2" args="(void) const " -->
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unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="classWvIn.html#a2">getChannels</a> (void) const </td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Return the number of audio channels in the data. <br></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">StkFloat </td><td class="memItemRight" valign="bottom"><a class="el" href="classWvIn.html#a3">lastOut</a> (void) const </td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Return the average across the last output sample frame. <a href="#a3"></a><br></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">const <a class="el" href="classStkFrames.html">StkFrames</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="classWvIn.html#a4">lastFrame</a> (void) const </td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Return an <a class="el" href="classStkFrames.html">StkFrames</a> reference to the last output sample frame. <a href="#a4"></a><br></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">StkFloat </td><td class="memItemRight" valign="bottom"><a class="el" href="classWvIn.html#a5">tick</a> (void)</td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Read out the average across one sample frame of data. <a href="#a5"></a><br></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="classStkFrames.html">StkFrames</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="classWvIn.html#a6">tick</a> (<a class="el" href="classStkFrames.html">StkFrames</a> &frames, unsigned int channel=0)</td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Fill a channel of the <a class="el" href="classStkFrames.html">StkFrames</a> object with averaged sample frames. <a href="#a6"></a><br></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="classStkFrames.html">StkFrames</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="classWvIn.html#a7">tickFrame</a> (<a class="el" href="classStkFrames.html">StkFrames</a> &frames)</td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Fill the <a class="el" href="classStkFrames.html">StkFrames</a> argument with data and return the same reference. <a href="#a7"></a><br></td></tr>
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</table>
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<hr><h2>Member Function Documentation</h2>
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<a class="anchor" name="a3"></a><!-- doxytag: member="WvIn::lastOut" ref="a3" args="(void) const " --><p>
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<table class="mdTable" cellpadding="2" cellspacing="0">
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<td class="mdRow">
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<table cellpadding="0" cellspacing="0" border="0">
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<td class="md" nowrap valign="top">StkFloat WvIn::lastOut </td>
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<td class="md" valign="top">( </td>
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<td class="md" nowrap valign="top">void </td>
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<td class="mdname1" valign="top" nowrap> </td>
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<td class="md" valign="top"> ) </td>
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<td class="md" nowrap> const</td>
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</tr>
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</table>
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</td>
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</table>
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<table cellspacing="5" cellpadding="0" border="0">
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<tr>
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<td>
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</td>
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<td>
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<p>
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Return the average across the last output sample frame.
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<p>
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If no file data is loaded, the returned value is 0.0. </td>
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</tr>
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</table>
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<a class="anchor" name="a4"></a><!-- doxytag: member="WvIn::lastFrame" ref="a4" args="(void) const " --><p>
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<table class="mdTable" cellpadding="2" cellspacing="0">
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<tr>
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<td class="mdRow">
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<table cellpadding="0" cellspacing="0" border="0">
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<tr>
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<td class="md" nowrap valign="top">const <a class="el" href="classStkFrames.html">StkFrames</a>& WvIn::lastFrame </td>
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<td class="md" valign="top">( </td>
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<td class="md" nowrap valign="top">void </td>
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<td class="mdname1" valign="top" nowrap> </td>
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<td class="md" valign="top"> ) </td>
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<td class="md" nowrap> const<code> [inline]</code></td>
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</tr>
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</table>
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</td>
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</tr>
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</table>
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<table cellspacing="5" cellpadding="0" border="0">
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<tr>
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<td>
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</td>
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<td>
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<p>
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Return an <a class="el" href="classStkFrames.html">StkFrames</a> reference to the last output sample frame.
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<p>
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If no file data is loaded, an empty container is returned. </td>
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</tr>
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</table>
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<a class="anchor" name="a5"></a><!-- doxytag: member="WvIn::tick" ref="a5" args="(void)" --><p>
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<table class="mdTable" cellpadding="2" cellspacing="0">
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<tr>
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<td class="mdRow">
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<table cellpadding="0" cellspacing="0" border="0">
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<tr>
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<td class="md" nowrap valign="top">StkFloat WvIn::tick </td>
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<td class="md" valign="top">( </td>
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<td class="md" nowrap valign="top">void </td>
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<td class="mdname1" valign="top" nowrap> </td>
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<td class="md" valign="top"> ) </td>
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<td class="md" nowrap></td>
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</tr>
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</table>
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</td>
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</tr>
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</table>
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<table cellspacing="5" cellpadding="0" border="0">
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<tr>
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<td>
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</td>
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<td>
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<p>
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Read out the average across one sample frame of data.
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<p>
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If no file data is loaded, the returned value is 0.0. </td>
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</tr>
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</table>
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<a class="anchor" name="a6"></a><!-- doxytag: member="WvIn::tick" ref="a6" args="(StkFrames &frames, unsigned int channel=0)" --><p>
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<table class="mdTable" cellpadding="2" cellspacing="0">
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<tr>
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<td class="mdRow">
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<table cellpadding="0" cellspacing="0" border="0">
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<tr>
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<td class="md" nowrap valign="top"><a class="el" href="classStkFrames.html">StkFrames</a>& WvIn::tick </td>
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<td class="md" valign="top">( </td>
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<td class="md" nowrap valign="top"><a class="el" href="classStkFrames.html">StkFrames</a> & </td>
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<td class="mdname" nowrap> <em>frames</em>, </td>
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</tr>
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<tr>
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<td class="md" nowrap align="right"></td>
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<td class="md"></td>
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<td class="md" nowrap>unsigned int </td>
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<td class="mdname" nowrap> <em>channel</em> = <code>0</code></td>
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</tr>
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<tr>
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<td class="md"></td>
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<td class="md">) </td>
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<td class="md" colspan="2"></td>
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</tr>
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</table>
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</td>
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</tr>
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</table>
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<table cellspacing="5" cellpadding="0" border="0">
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<tr>
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<td>
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</td>
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<td>
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<p>
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Fill a channel of the <a class="el" href="classStkFrames.html">StkFrames</a> object with averaged sample frames.
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<p>
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The <code>channel</code> argument should be zero or greater (the first channel is specified by 0). An <a class="el" href="classStkError.html">StkError</a> will be thrown if the <code>channel</code> argument is greater than or equal to the number of channels in the <a class="el" href="classStkFrames.html">StkFrames</a> object. If no file data is loaded, the container is filled with zeroes. </td>
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</tr>
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</table>
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<a class="anchor" name="a7"></a><!-- doxytag: member="WvIn::tickFrame" ref="a7" args="(StkFrames &frames)" --><p>
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<table class="mdTable" cellpadding="2" cellspacing="0">
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<tr>
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<td class="mdRow">
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<table cellpadding="0" cellspacing="0" border="0">
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<tr>
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<td class="md" nowrap valign="top"><a class="el" href="classStkFrames.html">StkFrames</a>& WvIn::tickFrame </td>
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<td class="md" valign="top">( </td>
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<td class="md" nowrap valign="top"><a class="el" href="classStkFrames.html">StkFrames</a> & </td>
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<td class="mdname1" valign="top" nowrap> <em>frames</em> </td>
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<td class="md" valign="top"> ) </td>
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<td class="md" nowrap></td>
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</tr>
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</td>
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<table cellspacing="5" cellpadding="0" border="0">
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<td>
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<p>
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Fill the <a class="el" href="classStkFrames.html">StkFrames</a> argument with data and return the same reference.
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<p>
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An <a class="el" href="classStkError.html">StkError</a> will be thrown if there is an incompatability between the number of channels in the loaded data and that in the <a class="el" href="classStkFrames.html">StkFrames</a> argument. If no file data is loaded, the container is filled with zeroes. </td>
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</tr>
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</table>
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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="WvIn_8h-source.html">WvIn.h</a></ul>
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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>©1995-2005 Perry R. Cook and Gary P. Scavone. All Rights Reserved.</td></tr>
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</table>
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