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<a id="IndexOsciln" class="indexterm"></a>
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<h2>
<span class="refentrytitle">osciln</span>
</h2>
<p>osciln —
Accesses table values at a user-defined frequency.
</p>
</div>
<div class="refsect1">
<a id="idm281472908725192"></a>
<h2>Description</h2>
<p>
Accesses table values at a user-defined frequency. This opcode can also be written as <a class="link" href="oscilx.html" title="oscilx"><em class="citetitle">oscilx</em></a>.
</p>
</div>
<div class="refsect1">
<a id="idm281472908654536"></a>
<h2>Syntax</h2>
<pre class="synopsis">ares <span class="command"><strong>osciln</strong></span> kamp, ifrq, ifn, itimes</pre>
</div>
<div class="refsect1">
<a id="idm281472908652376"></a>
<h2>Initialization</h2>
<p>
<span class="emphasis"><em>ifrq, itimes</em></span> -- rate and number of times through the stored table.
</p>
<p>
<span class="emphasis"><em>ifn</em></span> -- function table number.
</p>
</div>
<div class="refsect1">
<a id="idm281472908649880"></a>
<h2>Performance</h2>
<p>
<span class="emphasis"><em>kamp</em></span> -- amplitude factor
</p>
<p>
<span class="emphasis"><em>osciln</em></span> will sample several times through the stored table at a rate of <span class="emphasis"><em>ifrq</em></span> times per second, after which it will output zeros. Generates audio signals only, with output values scaled by <span class="emphasis"><em>kamp.</em></span>
</p>
</div>
<div class="refsect1">
<a id="idm281472908646392"></a>
<h2>Examples</h2>
<p>
Here is an example of the osciln opcode. It uses the file <a class="ulink" href="examples/osciln.csd" target="_top"><em class="citetitle">osciln.csd</em></a>.
</p>
<div class="example">
<a id="idm281472908644536"></a>
<p class="title">
<strong>Example 628. Example of the osciln 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="idm281472731629384"></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>
-odac <span class="c1">;;;realtime audio out</span>
<span class="c1">;-iadc ;;;uncomment -iadc if realtime audio input is needed too</span>
<span class="c1">; For Non-realtime ouput leave only the line below:</span>
<span class="c1">; -o osciln.wav -W ;;; for file output any platform</span>
<span class="nt"></CsOptions></span>
<span class="nt"><CsInstruments></span>
<span class="vg">sr</span> <span class="o">=</span> <span class="mi">44100</span>
<span class="vg">ksmps</span> <span class="o">=</span> <span class="mi">32</span>
<span class="vg">nchnls</span> <span class="o">=</span> <span class="mi">2</span>
<span class="vg">0dbfs</span> <span class="o">=</span> <span class="mi">1</span>
gi<span class="n">one</span> <span class="nb">ftgen</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">1024</span><span class="p">,</span> <span class="mi">7</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">1024</span><span class="p">,</span> <span class="mi">0</span>
gi<span class="n">two</span> <span class="nb">ftgen</span> <span class="mi">2</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">1024</span><span class="p">,</span> <span class="mi">7</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">512</span><span class="p">,</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">512</span><span class="p">,</span> <span class="mi">0</span>
<span class="kd">instr</span> <span class="nf">1</span> <span class="c1">;very simple waveguide system</span>
i<span class="n">fn</span> <span class="o">=</span> <span class="nb">p4</span>
i<span class="n">pitch</span> <span class="o">=</span> <span class="nb">p5</span>
i<span class="n">times</span> <span class="o">=</span> <span class="nb">p6</span>
i<span class="n">period</span> <span class="o">=</span> <span class="mi">1000</span><span class="o">/</span>i<span class="n">pitch</span>
a<span class="n">feed</span> <span class="nb">init</span> <span class="mi">0</span>
a<span class="n">impl</span> <span class="nb">osciln</span> <span class="mi">1</span><span class="p">,</span> i<span class="n">pitch</span><span class="p">,</span> i<span class="n">fn</span><span class="p">,</span> i<span class="n">times</span> <span class="c1">;use as excitation signal</span>
a<span class="n">refl</span> <span class="nb">tone</span> a<span class="n">impl</span> <span class="o">+</span> a<span class="n">feed</span><span class="p">,</span> <span class="mi">4000</span>
a<span class="n">out</span> <span class="nb">atone</span> a<span class="n">refl</span><span class="p">,</span> <span class="mi">5000</span>
a<span class="n">feed</span> <span class="nb">vdelay</span> a<span class="n">refl</span><span class="p">,</span> i<span class="n">period</span><span class="p">,</span> <span class="mi">10</span>
<span class="nb">outs</span> a<span class="n">out</span><span class="o">*</span><span class="mi">3</span><span class="p">,</span> a<span class="n">out</span><span class="o">*</span><span class="mi">3</span>
<span class="kd">endin</span>
<span class="nt"></CsInstruments></span>
<span class="nt"><CsScore></span>
<span class="nb">i</span> <span class="mi">1</span> <span class="mi">0</span> <span class="mi">4</span> <span class="mi">1</span> <span class="mi">110</span> <span class="mi">1</span> <span class="c1">;use different tables,</span>
<span class="nb">i</span> <span class="mi">1</span> <span class="mi">5</span> <span class="mi">4</span> <span class="mi">2</span> <span class="mi">110</span> <span class="mi">1</span> <span class="c1">;& different pitch</span>
<span class="nb">i</span> <span class="mi">1</span> <span class="mi">10</span> <span class="mi">4</span> <span class="mi">1</span> <span class="mi">110</span> <span class="mi">10</span> <span class="c1">;& different number of times the table is read</span>
<span class="nb">i</span> <span class="mi">1</span> <span class="mi">15</span> <span class="mi">4</span> <span class="mi">2</span> <span class="mi">110</span> <span class="mi">10</span>
<span class="nb">i</span> <span class="mi">1</span> <span class="mi">20</span> <span class="mi">6</span> <span class="mi">1</span> <span class="mi">880</span> <span class="mi">1</span>
<span class="nb">i</span> <span class="mi">1</span> <span class="mi">25</span> <span class="mi">3</span> <span class="mi">2</span> <span class="mi">880</span> <span class="mi">1</span>
<span class="nb">i</span> <span class="mi">1</span> <span class="mi">30</span> <span class="mi">3</span> <span class="mi">1</span> <span class="mi">880</span> <span class="mi">10</span>
<span class="nb">i</span> <span class="mi">1</span> <span class="mi">35</span> <span class="mi">3</span> <span class="mi">2</span> <span class="mi">880</span> <span class="mi">10</span>
<span class="nb">e</span>
<span class="nt"></CsScore></span>
<span class="nt"></CsoundSynthesizer></span>
</pre>
</div>
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<p><br class="example-break" />
</p>
</div>
<div class="refsect1">
<a id="idm281472908640344"></a>
<h2>See Also</h2>
<p>
<a class="link" href="table.html" title="table"><em class="citetitle">table</em></a>,
<a class="link" href="tablei.html" title="tablei"><em class="citetitle">tablei</em></a>,
<a class="link" href="table3.html" title="table3"><em class="citetitle">table3</em></a>,
<a class="link" href="oscil1.html" title="oscil1"><em class="citetitle">oscil1</em></a>,
<a class="link" href="oscil1i.html" title="oscil1i"><em class="citetitle">oscil1i</em></a>
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