66 lines
4.8 KiB
HTML
66 lines
4.8 KiB
HTML
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<html><head><title>CuspN</title>
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<link rel='stylesheet' href='./../scdoc.css' type='text/css' />
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<link rel='stylesheet' href='./../frontend.css' type='text/css' />
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<link rel='stylesheet' href='./../custom.css' type='text/css' />
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<meta http-equiv='Content-Type' content='text/html; charset=UTF-8' />
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<script src='./../scdoc.js' type='text/javascript'></script>
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<script src='./../prettify.js' type='text/javascript'></script>
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<script src='./../lang-sc.js' type='text/javascript'></script>
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<script type='text/javascript'>var helpRoot='./..';</script>
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</head>
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<ul id='menubar'></ul>
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<body onload='fixTOC();prettyPrint()'>
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<div class='contents'>
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<div class='header'>
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<div id='label'>SuperCollider CLASSES</div>
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<div id='categories'><a href='./../Browse.html#UGens>Generators>Chaotic'>UGens>Generators>Chaotic</a></div>
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<h1>CuspN</h1>
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<div id='summary'>Cusp map chaotic generator</div>
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</div>
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<div class='subheader'>
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<div id='filename'>Source: <a href='file:///Applications/SuperCollider.app/Contents/Resources/SCClassLibrary/Common/Audio/Chaos.sc'>/Applications/SuperCollider.app/Contents/Resources/SCClassLibrary/Common/Audio/Chaos.sc</a></div><div id='superclasses'>Inherits from: <a href="../Classes/ChaosGen.html">ChaosGen</a> : <a href="../Classes/UGen.html">UGen</a> : <a href="../Classes/AbstractFunction.html">AbstractFunction</a> : <a href="../Classes/Object.html">Object</a></div>
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<div id='subclasses'>Subclasses: <a href="../Classes/CuspL.html">CuspL</a></div>
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<div id='related'>See also: <a href="./../Classes/CuspL.html">CuspL</a></div>
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</div>
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<div id='toc'>
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<ul class='toc'><li class='toc1'><a href='#description'>Description</a></li>
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<ul class='toc'></ul><li class='toc1'><a href='#classmethods'>Class methods</a></li>
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<ul class='toc'><li class='toc3'><a href='#*ar'>ar</a> </li>
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<li class='toc2'><a href='#Inherited%20class%20methods'>Inherited class methods</a></li>
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<li class='toc2'><a href='#Undocumented%20class%20methods'>Undocumented class methods</a></li>
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<ul class='toc'><li class='toc3'><a href='#*equation'>equation</a> </li>
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</ul></ul><li class='toc1'><a href='#instancemethods'>Instance methods</a></li>
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<ul class='toc'><li class='toc2'><a href='#Inherited%20instance%20methods'>Inherited instance methods</a></li>
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</ul><li class='toc1'><a href='#examples'>Examples</a></li>
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<ul class='toc'></ul></ul></div><h2><a class='anchor' name='description'>Description</a></h2>
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<p>A non-interpolating sound generator based on the difference equation:<pre> x(n+1) = a - b * sqrt(|x(n)|)</pre>
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<p>sclang code translation:<pre class='code prettyprint lang-sc'>(
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var a = 1.0, b = 1.9, xi = 0, size = 64;
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plot(size.collect { xi = a - (b * sqrt(abs(xi))) });
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)</pre>
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<h2><a class='anchor' name='classmethods'>Class Methods</a></h2>
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<h3 class='cmethodname'><span class='methprefix'>*</span><a name='*ar' href='./../Overviews/Methods.html#ar'>ar</a> (<span class='argstr'>freq: 22050</span>, <span class='argstr'>a: 1</span>, <span class='argstr'>b: 1.9</span>, <span class='argstr'>xi: 0</span>, <span class='argstr'>mul: 1</span>, <span class='argstr'>add: 0</span>)</h3>
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<div class='method'><h4>Arguments:</h4>
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<table class='arguments'>
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<tr><td class='argumentname'>freq<td class='argumentdesc'>
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<p>Iteration frequency in Hertz<tr><td class='argumentname'>a<td class='argumentdesc'>
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<p>Equation variable<tr><td class='argumentname'>b<td class='argumentdesc'>
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<p>Equation variable<tr><td class='argumentname'>xi<td class='argumentdesc'>
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<p>Initial value of x<tr><td class='argumentname'>mul<td class='argumentdesc'><tr><td class='argumentname'>add<td class='argumentdesc'></table></div><h3><a class='anchor' name='Inherited%20class%20methods'>Inherited class methods</a></h3>
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<div id='inheritedclassmets'></div><h3><a class='anchor' name='Undocumented%20class%20methods'>Undocumented class methods</a></h3>
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<h3 class='cmethodname'><span class='methprefix'>*</span><a name='*equation' href='./../Overviews/Methods.html#equation'>equation</a> </h3>
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<h2><a class='anchor' name='instancemethods'>Instance Methods</a></h2>
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<h3><a class='anchor' name='Inherited%20instance%20methods'>Inherited instance methods</a></h3>
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<div id='inheritedinstmets'></div><h2><a class='anchor' name='examples'>Examples</a></h2>
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<pre class='code prettyprint lang-sc'>// vary frequency
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{ CuspN.ar(MouseX.kr(20, SampleRate.ir), 1.0, 1.99) * 0.3 }.play(s);
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// mouse-controlled params
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{ CuspN.ar(SampleRate.ir/4, MouseX.kr(0.9,1.1,1), MouseY.kr(1.8,2,1)) * 0.3 }.play(s);
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// as a frequency control
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{ SinOsc.ar(CuspN.ar(40, MouseX.kr(0.9,1.1,1), MouseY.kr(1.8,2,1))*800+900)*0.4 }.play(s);</pre>
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<p><div class='doclink'>helpfile source: <a href='file:///Applications/SuperCollider.app/Contents/Resources/HelpSource/Classes/CuspN.schelp'>/Applications/SuperCollider.app/Contents/Resources/HelpSource/Classes/CuspN.schelp</a><br>link::Classes/CuspN::<br>sc version: 3.8.0</div></div></body></html>
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