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<h2>
<span class="refentrytitle">wgflute</span>
</h2>
<p>wgflute —
Creates a tone similar to a flute.
</p>
</div>
<div class="refsect1">
<a id="idm281472869025672"></a>
<h2>Description</h2>
<p>
Audio output is a tone similar to a flute, using a physical model developed from Perry Cook, but re-coded for Csound.
</p>
</div>
<div class="refsect1">
<a id="idm281472869024072"></a>
<h2>Syntax</h2>
<pre class="synopsis">ares <span class="command"><strong>wgflute</strong></span> kamp, kfreq, kjet, iatt,
idetk, kngain, kvibf, kvamp [, ifn] [, iminfreq] [, ijetrf] [, iendrf]</pre>
</div>
<div class="refsect1">
<a id="idm281472868953480"></a>
<h2>Initialization</h2>
<p>
<span class="emphasis"><em>iatt</em></span> -- time in seconds to reach full blowing pressure. 0.1 seems to correspond to reasonable playing.
</p>
<p>
<span class="emphasis"><em>idetk</em></span> -- time in seconds taken to stop blowing. 0.1 is a smooth ending
</p>
<p>
<span class="emphasis"><em>ifn</em></span> (optional) -- table of shape of vibrato, defaults
to the usual sine table.
</p>
<p>
<span class="emphasis"><em>iminfreq</em></span> (optional) -- lowest frequency at which the instrument will play. If it is omitted it is taken to be the same as the initial kfreq. If <span class="emphasis"><em>iminfreq</em></span> is negative, initialization will be skipped.
</p>
<p>
<span class="emphasis"><em>ijetrf</em></span> (optional, default=0.5) -- amount of reflection in the breath jet that powers the flute. Default value is 0.5.
</p>
<p>
<span class="emphasis"><em>iendrf</em></span> (optional, default=0.5) -- reflection coefficient of the breath jet. Default value is 0.5. Both <span class="emphasis"><em>ijetrf</em></span> and <span class="emphasis"><em>iendrf</em></span> are used in the calculation of the pressure differential.
</p>
</div>
<div class="refsect1">
<a id="idm281472868945096"></a>
<h2>Performance</h2>
<p>
<span class="emphasis"><em>kamp</em></span> -- Amplitude of note.
</p>
<p>
<span class="emphasis"><em>kfreq</em></span> -- Frequency of note played. While it can be varied in performance, I have not tried it.
</p>
<p>
<span class="emphasis"><em>kjet</em></span> -- a parameter controlling the air jet. Values should be positive, and about 0.3. The useful range is approximately 0.08 to 0.56.
</p>
<p>
<span class="emphasis"><em>kngain</em></span> -- amplitude of the noise component, about 0 to 0.5
</p>
<p>
<span class="emphasis"><em>kvibf</em></span> -- frequency of vibrato in Hertz. Suggested range is 0 to 12
</p>
<p>
<span class="emphasis"><em>kvamp</em></span> -- amplitude of the vibrato
</p>
</div>
<div class="refsect1">
<a id="idm281472868938392"></a>
<h2>Examples</h2>
<p>
Here is an example of the wgflute opcode. It uses the file <a class="ulink" href="examples/wgflute.csd" target="_top"><em class="citetitle">wgflute.csd</em></a>.
</p>
<div class="example">
<a id="idm281472868936616"></a>
<p class="title">
<strong>Example 1125. Example of the wgflute 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="idm281472688938216"></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 wgflute.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>
<span class="kd">instr</span> <span class="nf">1</span>
k<span class="n">freq</span> <span class="o">=</span> <span class="mi">440</span>
k<span class="n">jet</span> <span class="nb">init</span> <span class="nb">p4</span> <span class="c1">;vary air jet</span>
i<span class="n">att</span> <span class="o">=</span> <span class="mf">0.1</span>
i<span class="n">detk</span> <span class="o">=</span> <span class="mf">0.1</span>
k<span class="n">ngain</span> <span class="o">=</span> <span class="mf">0.15</span>
k<span class="n">vibf</span> <span class="o">=</span> <span class="mf">5.925</span>
k<span class="n">vamp</span> <span class="o">=</span> <span class="mf">0.05</span>
a<span class="n">sig</span> <span class="nb">wgflute</span> <span class="mf">.8</span><span class="p">,</span> k<span class="n">freq</span><span class="p">,</span> k<span class="n">jet</span><span class="p">,</span> i<span class="n">att</span><span class="p">,</span> i<span class="n">detk</span><span class="p">,</span> k<span class="n">ngain</span><span class="p">,</span> k<span class="n">vibf</span><span class="p">,</span> k<span class="n">vamp</span><span class="p">,</span> <span class="mi">1</span>
<span class="nb">outs</span> a<span class="n">sig</span><span class="p">,</span> a<span class="n">sig</span>
<span class="kd">endin</span>
<span class="nt"></CsInstruments></span>
<span class="nt"><CsScore></span>
<span class="nb">f</span> <span class="mi">1</span> <span class="mi">0</span> <span class="mi">16384</span> <span class="mi">10</span> <span class="mi">1</span> <span class="c1">;sine wave</span>
<span class="nb">i</span> <span class="mi">1</span> <span class="mi">0</span> <span class="mi">2</span> <span class="mf">0.02</span> <span class="c1">;more air jet</span>
<span class="nb">i</span> <span class="mi">1</span> <span class="o">+</span> <span class="mi">2</span> <span class="mf">0.32</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" />
</p>
</div>
<div class="refsect1">
<a id="idm281472868932440"></a>
<h2>Credits</h2>
<p>
</p>
<table border="0" summary="Simple list" class="simplelist">
<tr>
<td>Author: John ffitch (after Perry Cook)</td>
</tr>
<tr>
<td>University of Bath, Codemist Ltd.</td>
</tr>
<tr>
<td>Bath, UK</td>
</tr>
</table>
<p>
</p>
<p>New in Csound version 3.47</p>
<p>ifn optional in 6.06</p>
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