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119 lines
8.3 KiB
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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="tutorial.html">Tutorial</a></CENTER>
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<!-- Generated by Doxygen 1.4.4 -->
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<h1>StifKarp Class Reference</h1><!-- doxytag: class="StifKarp" --><!-- doxytag: inherits="Instrmnt" --><code>#include <<a class="el" href="StifKarp_8h-source.html">StifKarp.h</a>></code>
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<p>
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<p>Inheritance diagram for StifKarp:
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<p><center><img src="classStifKarp.png" usemap="#StifKarp_map" border="0" alt=""></center>
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<map name="StifKarp_map">
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<area href="classInstrmnt.html" alt="Instrmnt" shape="rect" coords="0,56,57,80">
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<area href="classStk.html" alt="Stk" shape="rect" coords="0,0,57,24">
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</map>
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<a href="classStifKarp-members.html">List of all members.</a><hr><a name="_details"></a><h2>Detailed Description</h2>
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STK plucked stiff string instrument.
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<p>
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This class implements a simple plucked string algorithm (Karplus Strong) with enhancements (Jaffe-Smith, Smith, and others), including string stiffness and pluck position controls. The stiffness is modeled with allpass filters.<p>
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This is a digital waveguide model, making its use possibly subject to patents held by Stanford University, Yamaha, and others.<p>
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Control Change Numbers:<ul>
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<li>Pickup Position = 4</li><li>String Sustain = 11</li><li>String Stretch = 1</li></ul>
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<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="StifKarp::StifKarp" ref="a0" args="(StkFloat lowestFrequency)" -->
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</td><td class="memItemRight" valign="bottom"><a class="el" href="classStifKarp.html#a0">StifKarp</a> (StkFloat lowestFrequency)</td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Class constructor, taking the lowest desired playing frequency. <br></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a1"></a><!-- doxytag: member="StifKarp::~StifKarp" ref="a1" args="()" -->
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</td><td class="memItemRight" valign="bottom"><a class="el" href="classStifKarp.html#a1">~StifKarp</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="StifKarp::clear" ref="a2" args="()" -->
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void </td><td class="memItemRight" valign="bottom"><a class="el" href="classStifKarp.html#a2">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="a3"></a><!-- doxytag: member="StifKarp::setFrequency" ref="a3" args="(StkFloat frequency)" -->
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void </td><td class="memItemRight" valign="bottom"><a class="el" href="classStifKarp.html#a3">setFrequency</a> (StkFloat frequency)</td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Set instrument parameters for a particular frequency. <br></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a4"></a><!-- doxytag: member="StifKarp::setStretch" ref="a4" args="(StkFloat stretch)" -->
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void </td><td class="memItemRight" valign="bottom"><a class="el" href="classStifKarp.html#a4">setStretch</a> (StkFloat stretch)</td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Set the stretch "factor" of the string (0.0 - 1.0). <br></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a5"></a><!-- doxytag: member="StifKarp::setPickupPosition" ref="a5" args="(StkFloat position)" -->
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void </td><td class="memItemRight" valign="bottom"><a class="el" href="classStifKarp.html#a5">setPickupPosition</a> (StkFloat position)</td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Set the pluck or "excitation" position along the string (0.0 - 1.0). <br></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classStifKarp.html#a6">setBaseLoopGain</a> (StkFloat aGain)</td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Set the base loop gain. <a href="#a6"></a><br></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a7"></a><!-- doxytag: member="StifKarp::pluck" ref="a7" args="(StkFloat amplitude)" -->
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void </td><td class="memItemRight" valign="bottom"><a class="el" href="classStifKarp.html#a7">pluck</a> (StkFloat amplitude)</td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Pluck the string with the given amplitude using the current frequency. <br></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a8"></a><!-- doxytag: member="StifKarp::noteOn" ref="a8" args="(StkFloat frequency, StkFloat amplitude)" -->
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void </td><td class="memItemRight" valign="bottom"><a class="el" href="classStifKarp.html#a8">noteOn</a> (StkFloat frequency, StkFloat amplitude)</td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Start a note with the given frequency and amplitude. <br></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a9"></a><!-- doxytag: member="StifKarp::noteOff" ref="a9" args="(StkFloat amplitude)" -->
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void </td><td class="memItemRight" valign="bottom"><a class="el" href="classStifKarp.html#a9">noteOff</a> (StkFloat amplitude)</td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Stop a note with the given amplitude (speed of decay). <br></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a10"></a><!-- doxytag: member="StifKarp::controlChange" ref="a10" args="(int number, StkFloat value)" -->
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void </td><td class="memItemRight" valign="bottom"><a class="el" href="classStifKarp.html#a10">controlChange</a> (int number, StkFloat value)</td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Perform the control change specified by <em>number</em> and <em>value</em> (0.0 - 128.0). <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="a6"></a><!-- doxytag: member="StifKarp::setBaseLoopGain" ref="a6" args="(StkFloat aGain)" --><p>
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<td class="md" nowrap valign="top">void StifKarp::setBaseLoopGain </td>
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<td class="md" valign="top">( </td>
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<td class="md" nowrap valign="top">StkFloat </td>
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<td class="mdname1" valign="top" nowrap> <em>aGain</em> </td>
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<td class="md" valign="top"> ) </td>
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<p>
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Set the base loop gain.
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<p>
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The actual loop gain is set according to the frequency. Because of high-frequency loop filter roll-off, higher frequency settings have greater loop gains. </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="StifKarp_8h-source.html">StifKarp.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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