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81 lines
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5.7 KiB
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<!doctype html><html lang='en'><head><title>LFPulse | SuperCollider 3.12.2 Help</title>
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<div id='toc'>
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<div id='toctitle'>LFPulse:</div>
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<span class='toc_search'>Filter: <input id='toc_search'></span><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> <a href='#*kr'>kr</a> </li>
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<li class='toc2'><a href='#Inherited%20class%20methods'>Inherited class methods</a></li>
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</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><div id='menubar'></div>
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<div class='contents'>
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<div id='label'>
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<span id='folder'>Classes</span>
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| <span id='categories'><a href='./../Browse.html#UGens'>UGens</a> > <a href='./../Browse.html#UGens>Generators'>Generators</a> > <a href='./../Browse.html#UGens>Generators>Deterministic'>Deterministic</a></span>
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</div><h1>LFPulse<span id='superclasses'> : <a href="../Classes/PureUGen.html">PureUGen</a> : <a href="../Classes/UGen.html">UGen</a> : <a href="../Classes/AbstractFunction.html">AbstractFunction</a> : <a href="../Classes/Object.html">Object</a></span>
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</h1>
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<div id='summary'>pulse oscillator</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/Osc.sc' title='/Applications/SuperCollider.app/Contents/Resources/SCClassLibrary/Common/Audio/Osc.sc'>Osc.sc</a></div><div id='related'>See also: <a href="./../Classes/LFSaw.html">LFSaw</a></div>
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</div>
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<h2><a class='anchor' name='description'>Description</a></h2>
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<p>A non-band-limited pulse oscillator. Outputs a high value of one and a low value of zero.<h2><a class='anchor' name='classmethods'>Class Methods</a></h2>
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<h3 class='method-code'><span class='method-prefix'>LFPulse.</span><a class='method-name' name='*ar' href='./../Overviews/Methods.html#ar'>ar</a>(<span class='argstr'>freq: 440.0</span>, <span class='argstr'>iphase: 0.0</span>, <span class='argstr'>width: 0.5</span>, <span class='argstr'>mul: 1.0</span>, <span class='argstr'>add: 0.0</span>)</h3>
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<h3 class='method-code'><span class='method-prefix'>LFPulse.</span><a class='method-name' name='*kr' href='./../Overviews/Methods.html#kr'>kr</a>(<span class='argstr'>freq: 440.0</span>, <span class='argstr'>iphase: 0.0</span>, <span class='argstr'>width: 0.5</span>, <span class='argstr'>mul: 1.0</span>, <span class='argstr'>add: 0.0</span>)</h3>
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<div class='method'>
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<p><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>frequency in Hertz<tr><td class='argumentname'>iphase<td class='argumentdesc'>
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<p>initial phase offset in cycles ( 0..1 )<tr><td class='argumentname'>width<td class='argumentdesc'>
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<p>pulse width duty cycle from zero to one.<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><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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<p>a plot:<textarea class='editor'>{ LFPulse.ar(Line.kr(100, 800, 0.1)) }.plot(0.1);</textarea>
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<p>50 Hz wave:<textarea class='editor'>{ LFPulse.ar(50) * 0.1 }.play;</textarea>
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<p>modulating frequency:<textarea class='editor'>{ LFPulse.ar(XLine.kr(1, 200, 10), 0, 0.2, 0.1) }.play;</textarea>
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<p>amplitude modulation:<textarea class='editor'>{ LFPulse.kr(XLine.kr(1, 200, 10), 0, 0.2) * SinOsc.ar(440) * 0.1 }.play;</textarea>
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<p>used as both Oscillator and LFO:<textarea class='editor'>{ LFPulse.ar(LFPulse.kr(3, 0, 0.3, 200, 200), 0, 0.2, 0.1) }.play;</textarea>
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<p>scope:<textarea class='editor'>{ LFPulse.ar(500, 0, MouseX.kr, 0.5) }.scope;</textarea>
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<p>compare with band limited Pulse UGen:<textarea class='editor'>(
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{
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[
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Pulse.ar(100, 0.3, 0.5),
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LFPulse.ar(100, 0, 0.3, 0.5)
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] * 0.2
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}.scope(bufsize: 44100, zoom: 5)
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)</textarea>
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<div class='doclink'>helpfile source: <a href='file:///Applications/SuperCollider.app/Contents/Resources/HelpSource/Classes/LFPulse.schelp'>/Applications/SuperCollider.app/Contents/Resources/HelpSource/Classes/LFPulse.schelp</a><br>link::Classes/LFPulse::<br></div></div><script src='./../editor.js' type='text/javascript'></script>
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