153 lines
No EOL
7.9 KiB
HTML
153 lines
No EOL
7.9 KiB
HTML
<!doctype html><html lang='en'><head><title>Osc | SuperCollider 3.12.2 Help</title>
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<script src='./../lib/codemirror-addon-simple-5.39.2.min.js' type='text/javascript'></script>
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<script>
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var helpRoot = './..';
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var scdoc_title = 'Osc';
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var scdoc_sc_version = '3.12.2';
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</script>
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</head>
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<body onload='fixTOC()'>
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<div id='toc'>
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<div id='toctitle'>Osc:</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 class='header'>
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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>Osc<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'>Interpolating wavetable 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/COsc.html">COsc</a>, <a href="./../Classes/OscN.html">OscN</a>, <a href="./../Classes/VOsc.html">VOsc</a>, <a href="./../Classes/VOsc3.html">VOsc3</a>, <a href="./../Classes/Wavetable.html">Wavetable</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>Linear interpolating wavetable lookup oscillator with frequency and phase modulation inputs.
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<p>This oscillator requires a buffer to be filled with a wavetable format signal. This preprocesses the Signal into a form which can be used efficiently by the Oscillator. The buffer size must be a power of 2.
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<p>This can be achieved by creating a Buffer object and sending it one of the "b_gen" messages ( <a href="./../Classes/Buffer.html#-sine1">Buffer: -sine1</a>, <a href="./../Classes/Buffer.html#-sine2">Buffer: -sine2</a>, <a href="./../Classes/Buffer.html#-sine3">Buffer: -sine3</a> ) with the wavetable flag set to true.
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<p>This can also be achieved by creating a <a href="./../Classes/Signal.html">Signal</a> object and sending it the 'asWavetable' message, thereby creating a Wavetable object in the required format. Then, the wavetable data may be transmitted to the server using the <a href="./../Classes/Buffer.html#*sendCollection">Buffer: *sendCollection</a> or <a href="./../Classes/Buffer.html#*loadCollection">Buffer: *loadCollection</a> methods.<h2><a class='anchor' name='classmethods'>Class Methods</a></h2>
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<h3 class='method-code'><span class='method-prefix'>Osc.</span><a class='method-name' name='*ar' href='./../Overviews/Methods.html#ar'>ar</a>(<span class='argstr'>bufnum</span>, <span class='argstr'>freq: 440.0</span>, <span class='argstr'>phase: 0.0</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'>Osc.</span><a class='method-name' name='*kr' href='./../Overviews/Methods.html#kr'>kr</a>(<span class='argstr'>bufnum</span>, <span class='argstr'>freq: 440.0</span>, <span class='argstr'>phase: 0.0</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'>bufnum<td class='argumentdesc'>
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<p>Buffer index.<tr><td class='argumentname'>freq<td class='argumentdesc'>
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<p>Frequency in Hertz.<tr><td class='argumentname'>phase<td class='argumentdesc'>
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<p>Phase offset or modulator in radians. (Note: phase values should be within the range +-8pi. If your phase values are larger then simply use <code>.mod(2pi)</code> to wrap them.)<tr><td class='argumentname'>mul<td class='argumentdesc'>
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<p>Output will be multiplied by this value.<tr><td class='argumentname'>add<td class='argumentdesc'>
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<p>This value will be added to the output.</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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<textarea class='editor'>(
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s = Server.local;
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b = Buffer.alloc(s, 512, 1);
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b.sine1(1.0/[1,2,3,4,5,6], true, true, true);
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SynthDef("help-Osc",{ arg out=0,bufnum=0;
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Out.ar(out,
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Osc.ar(bufnum, 200, 0, 0.5)
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)
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}).play(s,[\out, 0, \bufnum, b.bufnum]);
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)
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(
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s = Server.local;
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b = Buffer.alloc(s, 512, 1);
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b.sine1(1.0/[1,2,3,4,5,6], true, true, true);
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SynthDef("help-Osc",{ arg out=0,bufnum=0;
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Out.ar(out,
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Osc.ar(bufnum, XLine.kr(2000,200), 0, 0.5)// modulate freq
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)
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}).play(s,[\out, 0, \bufnum, b.bufnum]);
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)
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(
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s = Server.local;
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b = Buffer.alloc(s, 512, 1);
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b.sine1([1.0], true, true, true);
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SynthDef("help-Osc",{ arg out=0,bufnum=0;
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Out.ar(out,
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Osc.ar(bufnum,
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Osc.ar(bufnum,
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XLine.kr(1,1000,9),
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0,
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200,
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800),
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0,
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0.25)
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)
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}).play(s,[\out, 0, \bufnum, b.bufnum]);
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)
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(
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// modulate phase
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s = Server.local;
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b = Buffer.alloc(s, 512, 1);
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b.sine1([1.0], true, true, true);
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SynthDef("help-Osc",{ arg out=0,bufnum=0;
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Out.ar(out,
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Osc.ar(bufnum,
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800,
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Osc.ar(bufnum,
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XLine.kr(20,8000,10),
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0,
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2pi),
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0.25)
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)
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}).play(s,[\out, 0, \bufnum, b.bufnum]);
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)
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(
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// change the buffer while its playing
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s = Server.local;
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b = Buffer.alloc(s, 4096, 1);
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b.sine1(1.0/[1,2,3,4,5,6], true, true, true);
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SynthDef("help-Osc",{ arg out=0,bufnum=0;
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Out.ar(out,
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Osc.ar(bufnum, [80,80.2], 0, 0.2)
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)
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}).play(s,[\out, 0, \bufnum, b.bufnum]);
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)
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(
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fork {
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var n = 32;
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50.do {
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b.sine1(Array.rand(n,0,1).cubed, true, true, true);
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0.25.wait;
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};
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};
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)</textarea>
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<div class='doclink'>helpfile source: <a href='file:///Applications/SuperCollider.app/Contents/Resources/HelpSource/Classes/Osc.schelp'>/Applications/SuperCollider.app/Contents/Resources/HelpSource/Classes/Osc.schelp</a><br>link::Classes/Osc::<br></div></div><script src='./../editor.js' type='text/javascript'></script>
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</body></html> |