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<h2>
<span class="refentrytitle">oscilikt</span>
</h2>
<p>oscilikt —
A linearly interpolated oscillator that allows changing the table number at k-rate.
</p>
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<div class="refsect1">
<a id="idm281472908925176"></a>
<h2>Description</h2>
<p>
<span class="emphasis"><em>oscilikt</em></span> is very similar to <a class="link" href="oscili.html" title="oscili"><em class="citetitle">oscili</em></a>, but allows changing the table number at k-rate. It is slightly slower than <span class="emphasis"><em>oscili</em></span> (especially with high control rate), although also more accurate as it uses a 31-bit phase accumulator, as opposed to the 24-bit one used by <span class="emphasis"><em>oscili</em></span>.
</p>
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<div class="refsect1">
<a id="idm281472908850584"></a>
<h2>Syntax</h2>
<pre class="synopsis">ares <span class="command"><strong>oscilikt</strong></span> xamp, xcps, kfn [, iphs] [, istor]</pre>
<pre class="synopsis">kres <span class="command"><strong>oscilikt</strong></span> kamp, kcps, kfn [, iphs] [, istor]</pre>
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<div class="refsect1">
<a id="idm281472908846872"></a>
<h2>Initialization</h2>
<p>
<span class="emphasis"><em>iphs</em></span> (optional, defaults to 0) -- initial phase in the range 0 to 1. Other values are wrapped to the allowed range.
</p>
<p>
<span class="emphasis"><em>istor</em></span> (optional, defaults to 0) -- skip initialization.
</p>
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<div class="refsect1">
<a id="idm281472908844024"></a>
<h2>Performance</h2>
<p>
<span class="emphasis"><em>kamp</em></span>, <span class="emphasis"><em>xamp</em></span> -- amplitude.
</p>
<p>
<span class="emphasis"><em>kcps</em></span>, <span class="emphasis"><em>xcps</em></span> -- frequency in Hz. Zero and negative values are allowed. However, the absolute value must be less than <a class="link" href="sr.html" title="sr"><em class="citetitle">sr</em></a> (and recommended to be less than <span class="emphasis"><em>sr/</em></span>2).
</p>
<p>
<span class="emphasis"><em>kfn</em></span> -- function table number. Can be varied at control rate (useful to <span class="quote">“<span class="quote">morph</span>”</span> waveforms, or select from a set of band-limited tables generated by <a class="link" href="GEN30.html" title="GEN30"><em class="citetitle">GEN30</em></a>).
</p>
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<div class="refsect1">
<a id="idm281472908836888"></a>
<h2>Examples</h2>
<p>
Here is an example of the oscilikt opcode. It uses the file <a class="ulink" href="examples/oscilikt.csd" target="_top"><em class="citetitle">oscilikt.csd</em></a>.
</p>
<div class="example">
<a id="idm281472908835032"></a>
<p class="title">
<strong>Example 625. Example of the oscilikt opcode.</strong>
</p>
<div class="example-contents">
<p>See the sections <a class="link" href="UsingRealTime.html" title="Real-Time Audio"><em class="citetitle">Real-time Audio</em></a> and <a class="link" href="CommandFlags.html" title="Csound command line"><em class="citetitle">Command Line Flags</em></a> for more information on using command line flags.</p>
<div class="refsect1">
<a id="idm281472731872008"></a>
<pre class="programlisting">
<span class="nt"><CsoundSynthesizer></span>
<span class="nt"><CsOptions></span>
<span class="c1">; Select audio/midi flags here according to platform</span>
<span class="c1">; Audio out Audio in No messages</span>
-odac -iadc -d <span class="c1">;;;RT audio I/O</span>
<span class="c1">; For Non-realtime ouput leave only the line below:</span>
<span class="c1">; -o oscilikt.wav -W ;;; for file output any platform</span>
<span class="nt"></CsOptions></span>
<span class="nt"><CsInstruments></span>
<span class="c1">; Initialize the global variables.</span>
<span class="vg">sr</span> <span class="o">=</span> <span class="mi">44100</span>
<span class="vg">kr</span> <span class="o">=</span> <span class="mi">4410</span>
<span class="vg">ksmps</span> <span class="o">=</span> <span class="mi">10</span>
<span class="vg">nchnls</span> <span class="o">=</span> <span class="mi">1</span>
<span class="c1">; Instrument #1.</span>
<span class="kd">instr</span> <span class="nf">1</span>
<span class="c1">; Generate a uni-polar (0-1) square wave.</span>
k<span class="n">amp1</span> <span class="nb">init</span> <span class="mi">1</span>
k<span class="n">cps1</span> <span class="nb">init</span> <span class="mi">2</span>
i<span class="n">type</span> <span class="o">=</span> <span class="mi">3</span>
k<span class="n">square</span> <span class="nb">lfo</span> k<span class="n">amp1</span><span class="p">,</span> k<span class="n">cps1</span><span class="p">,</span> i<span class="n">type</span>
<span class="c1">; Use the square wave to switch between Tables #1 and #2.</span>
k<span class="n">amp2</span> <span class="nb">init</span> <span class="mi">20000</span>
k<span class="n">cps2</span> <span class="nb">init</span> <span class="mi">220</span>
k<span class="n">fn</span> <span class="o">=</span> k<span class="n">square</span> <span class="o">+</span> <span class="mi">1</span>
a<span class="n">1</span> <span class="nb">oscilikt</span> k<span class="n">amp2</span><span class="p">,</span> k<span class="n">cps2</span><span class="p">,</span> k<span class="n">fn</span>
<span class="nb">out</span> a<span class="n">1</span>
<span class="kd">endin</span>
<span class="nt"></CsInstruments></span>
<span class="nt"><CsScore></span>
<span class="c1">; Table #1, a sine waveform.</span>
<span class="nb">f</span> <span class="mi">1</span> <span class="mi">0</span> <span class="mi">4096</span> <span class="mi">10</span> <span class="mi">0</span> <span class="mi">1</span>
<span class="c1">; Table #2: a sawtooth wave</span>
<span class="nb">f</span> <span class="mi">2</span> <span class="mi">0</span> <span class="mi">3</span> <span class="o">-</span><span class="mi">2</span> <span class="mi">1</span> <span class="mi">0</span> <span class="o">-</span><span class="mi">1</span>
<span class="c1">; Play Instrument #1 for two seconds.</span>
<span class="nb">i</span> <span class="mi">1</span> <span class="mi">0</span> <span class="mi">2</span>
<span class="nt"></CsScore></span>
<span class="nt"></CsoundSynthesizer></span>
</pre>
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</div>
<p><br class="example-break" />
</p>
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<div class="refsect1">
<a id="idm281472908830744"></a>
<h2>See Also</h2>
<p>
<a class="link" href="osciliktp.html" title="osciliktp"><em class="citetitle">osciliktp</em></a> and
<a class="link" href="oscilikts.html" title="oscilikts"><em class="citetitle">oscilikts</em></a>.
</p>
</div>
<div class="refsect1">
<a id="idm281472908827640"></a>
<h2>Credits</h2>
<p>Author: Istvan Varga</p>
<p>Example written by Kevin Conder.</p>
<p>New in version 4.22</p>
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