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<h2>
<span class="refentrytitle">phasorbnk</span>
</h2>
<p>phasorbnk —
Produce an arbitrary number of normalized moving phase values.
</p>
</div>
<div class="refsect1">
<a id="idm281472903824872"></a>
<h2>Description</h2>
<p>
Produce an arbitrary number of normalized moving phase values, accessable by an index.
</p>
</div>
<div class="refsect1">
<a id="idm281472903821176"></a>
<h2>Syntax</h2>
<pre class="synopsis">ares <span class="command"><strong>phasorbnk</strong></span> xcps, kndx, icnt [, iphs]</pre>
<pre class="synopsis">kres <span class="command"><strong>phasorbnk</strong></span> kcps, kndx, icnt [, iphs]</pre>
</div>
<div class="refsect1">
<a id="idm281472903817528"></a>
<h2>Initialization</h2>
<p>
<span class="emphasis"><em>icnt</em></span> -- maximum number of phasors to be used.
</p>
<p>
<span class="emphasis"><em>iphs</em></span> -- initial phase, expressed as a fraction of a cycle (0 to 1). If -1 initialization is skipped. If <span class="emphasis"><em>iphas</em></span>>1 each phasor will be initialized with a random value.
</p>
</div>
<div class="refsect1">
<a id="idm281472903742856"></a>
<h2>Performance</h2>
<p>
<span class="emphasis"><em>kndx</em></span> -- index value to access individual phasors
</p>
<p>
For each independent phasor, an internal phase is successively accumulated in accordance with the <span class="emphasis"><em>kcps</em></span> or <span class="emphasis"><em>xcps</em></span> frequency to produce a moving phase value, normalized to lie in the range 0 <= phs < 1. Each individual phasor is accessed by index <span class="emphasis"><em>kndx</em></span>.
</p>
<p>
This phasor bank can be used inside a k-rate loop to generate multiple independent voices, or together with the <a class="link" href="adsynt.html" title="adsynt"><em class="citetitle">adsynt</em></a> opcode to change parameters in the tables used by <span class="emphasis"><em>adsynt</em></span>.
</p>
</div>
<div class="refsect1">
<a id="idm281472903737240"></a>
<h2>Examples</h2>
<p>
Here is an example of the phasorbnk opcode. It uses the file <a class="ulink" href="examples/phasorbnk.csd" target="_top"><em class="citetitle">phasorbnk.csd</em></a>.
</p>
<div class="example">
<a id="idm281472903735464"></a>
<p class="title">
<strong>Example 690. Example of the phasorbnk 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="idm281472725250056"></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 phasorbnk.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">; Generate a sinewave table.</span>
gi<span class="n">wave</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">10</span><span class="p">,</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 10 voices.</span>
i<span class="n">cnt</span> <span class="o">=</span> <span class="mi">10</span>
<span class="c1">; Empty the output buffer.</span>
a<span class="n">sum</span> <span class="o">=</span> <span class="mi">0</span>
<span class="c1">; Reset the loop index.</span>
k<span class="n">index</span> <span class="o">=</span> <span class="mi">0</span>
<span class="c1">; This loop is executed every k-cycle.</span>
<span class="nl">loop</span><span class="p">:</span>
<span class="c1">; Generate non-harmonic partials.</span>
k<span class="n">cps</span> <span class="o">=</span> <span class="p">(</span>k<span class="n">index</span><span class="o">+</span><span class="mi">1</span><span class="p">)</span><span class="o">*</span><span class="mi">100</span><span class="o">+</span><span class="mi">30</span>
<span class="c1">; Get the phase for each voice.</span>
a<span class="n">phas</span> <span class="nb">phasorbnk</span> k<span class="n">cps</span><span class="p">,</span> k<span class="n">index</span><span class="p">,</span> i<span class="n">cnt</span>
<span class="c1">; Read the wave from the table.</span>
a<span class="n">sig</span> <span class="nb">table</span> a<span class="n">phas</span><span class="p">,</span> gi<span class="n">wave</span><span class="p">,</span> <span class="mi">1</span>
<span class="c1">; Accumulate the audio output.</span>
a<span class="n">sum</span> <span class="o">=</span> a<span class="n">sum</span> <span class="o">+</span> a<span class="n">sig</span>
<span class="c1">; Increment the index.</span>
k<span class="n">index</span> <span class="o">=</span> k<span class="n">index</span> <span class="o">+</span> <span class="mi">1</span>
<span class="c1">; Perform the loop until the index (kindex) reaches </span>
<span class="c1">; the counter value (icnt).</span>
<span class="k">if</span> <span class="p">(</span>k<span class="n">index</span> <span class="o"><</span> i<span class="n">cnt</span><span class="p">)</span> <span class="k">kgoto</span> <span class="nl">loop</span>
<span class="nb">out</span> a<span class="n">sum</span><span class="o">*</span><span class="mi">3000</span>
<span class="kd">endin</span>
<span class="nt"></CsInstruments></span>
<span class="nt"><CsScore></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="nb">e</span>
<span class="nt"></CsScore></span>
<span class="nt"></CsoundSynthesizer></span>
</pre>
</div>
</div>
</div>
<p><br class="example-break" />
Generate multiple voices with independent partials. This example is better with <span class="emphasis"><em>adsynt</em></span>. See also the example under <a class="link" href="adsynt.html" title="adsynt"><em class="citetitle">adsynt</em></a>, for k-rate use of <span class="emphasis"><em>phasorbnk</em></span>.
</p>
</div>
<div class="refsect1">
<a id="idm281472903729256"></a>
<h2>Credits</h2>
<p>
</p>
<table border="0" summary="Simple list" class="simplelist">
<tr>
<td>Author: Peter Neubäcker</td>
</tr>
<tr>
<td>Munich, Germany</td>
</tr>
<tr>
<td>August 1999</td>
</tr>
</table>
<p>
</p>
<p>New in Csound version 3.58</p>
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