<?xml version="1.0" encoding="UTF-8" standalone="no"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <title>STKWhistle</title> <link rel="stylesheet" type="text/css" href="csound.css" /> <meta name="generator" content="DocBook XSL Stylesheets V1.76.1" /> <link rel="home" href="index.html" title="The Canonical Csound Reference Manual" /> <link rel="up" href="OpcodesTop.html" title="Orchestra Opcodes and Operators" /> <link rel="prev" href="STKVoicForm.html" title="STKVoicForm" /> <link rel="next" href="STKWurley.html" title="STKWurley" /> </head> <body> <div class="navheader"> <table width="100%" summary="Navigation header"> <tr> <th colspan="3" align="center">STKWhistle</th> </tr> <tr> <td width="20%" align="left"><a accesskey="p" href="STKVoicForm.html">Prev</a> </td> <th width="60%" align="center">Orchestra Opcodes and Operators</th> <td width="20%" align="right"> <a accesskey="n" href="STKWurley.html">Next</a></td> </tr> </table> <hr /> </div> <div class="refentry" title="STKWhistle"> <a id="STKWhistle"></a> <div class="titlepage"></div> <a id="IndexStkwhistle" class="indexterm"></a> <div class="refnamediv"> <h2> <span class="refentrytitle">STKWhistle</span> </h2> <p>STKWhistle — STKWhistle produces whistle sounds. </p> </div> <div class="refsect1" title="Description"> <a id="idp46144576"></a> <h2>Description</h2> <p> STKWhistle produces (police) whistle sounds. It uses a hybrid physical/spectral model of a police whistle (a la Cook).</p> </div> <div class="refsect1" title="Syntax"> <a id="idp46145304"></a> <h2>Syntax</h2> <pre class="synopsis">asignal <span class="command"><strong>STKWhistle</strong></span> ifrequency, iamplitude, [kc1, kv1[, kc2, kv2[, kc3, kv3[, kc4, kv4[, kc5, kv5]]]]]</pre> </div> <div class="refsect1" title="Initialization"> <a id="idp46155864"></a> <h2>Initialization</h2> <p> <span class="emphasis"><em>ifrequency</em></span> -- Frequency of note played, in Hertz. </p> <p> <span class="emphasis"><em>iamplitude</em></span> -- Amplitude of note played (range 0-1). </p> </div> <div class="refsect1" title="Performance"> <a id="idp46157160"></a> <h2>Performance</h2> <p> <span class="emphasis"><em>kc1, kv1, kc2, kv2, kc3, kv3, kc4, kv4, kc5, kv5, kc6, kv6, kc7, kv7, kc8, kv8</em></span> -- Up to 8 optional k-rate controller pairs for the STK opcodes. Each controller pair consists of a controller number (kc) followed by a controller value (kv). The 5 controller numbers and values that work for STKWhistle are: </p> <div class="itemizedlist"> <ul class="itemizedlist" type="disc"> <li class="listitem"> <p><span class="emphasis"><em>kc, kv</em></span> -- 2, blowing frequency modulation.</p> </li> <li class="listitem"> <p><span class="emphasis"><em>kc, kv</em></span> -- 4, noise gain.</p> </li> <li class="listitem"> <p><span class="emphasis"><em>kc, kv</em></span> -- 11, fipple modulation frequency.</p> </li> <li class="listitem"> <p><span class="emphasis"><em>kc, kv</em></span> -- 1, fipple modulation gain.</p> </li> <li class="listitem"> <p><span class="emphasis"><em>kc, kv</em></span> -- 128, volume.</p> </li> </ul> </div> <p> </p> </div> <div class="refsect1"> <a id="idp46190816"></a> <div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"> <table border="0" summary="Note: Note"> <tr> <td rowspan="2" align="center" valign="top" width="25"> <img alt="[Note]" src="images/note.png" /> </td> <th align="left">Note</th> </tr> <tr> <td align="left" valign="top"> <p> The code for this opcode is taken directly from the Whistle class in the Synthesis Toolkit in C++ by Perry R. Cook and Gary P. Scavone. More on the STK classes can be found here: <a class="ulink" href="https://ccrma.stanford.edu/software/stk/classes.html" target="_top"><em class="citetitle">https://ccrma.stanford.edu/software/stk/classes.html</em></a> </p> </td> </tr> </table> </div> </div> <div class="refsect1" title="Examples"> <a id="idp46192288"></a> <h2>Examples</h2> <p> Here is an example of the STKWhistle opcode. It uses the file <a class="ulink" href="examples/STKWhistle.csd" target="_top"><em class="citetitle">STKWhistle.csd</em></a>. </p> <div class="example"> <a id="idp46193248"></a> <p class="title"> <strong>Example 823. Example of the STKWhistle opcode.</strong> </p> <div class="example-contents"> <pre class="programlisting"> <span class="csdtag"><CsoundSynthesizer></span> <span class="csdtag"><CsOptions></span> <span class="comment">; Select audio/midi flags here according to platform</span> -odac <span class="comment">;;;RT audio out</span> <span class="comment">;-iadc ;;;uncomment -iadc if RT audio input is needed too</span> <span class="comment">; For Non-realtime ouput leave only the line below:</span> <span class="comment">; -o STKWhistle.wav -W ;;; for file output any platform</span> <span class="csdtag"></CsOptions></span> <span class="csdtag"><CsInstruments></span> <span class="ohdr">sr</span> <span class="op">=</span> 44100 <span class="ohdr">ksmps</span> <span class="op">=</span> 32 <span class="ohdr">nchnls</span> <span class="op">=</span> 2 <span class="ohdr">0dbfs</span> <span class="op">=</span> 1 <span class="oblock">instr</span> 1 ifrq <span class="op">=</span> p4 kblw <span class="opc">line</span> p5, p3, p6 <span class="comment">;Blowing Frequency Modulation</span> kflp <span class="op">=</span> p7 <span class="comment">;Fipple Modulation Frequency</span> asig <span class="opc">STKWhistle</span> <span class="opc">cpspch</span>(p4), 1, 4, 20, 11, kflp, 1, 100, 2, kblw, 128, 127 asig <span class="op">=</span> asig<span class="op">*</span>.7 <span class="comment">;too loud</span> <span class="opc">outs</span> asig, asig <span class="oblock">endin</span> <span class="csdtag"></CsInstruments></span> <span class="csdtag"><CsScore></span> <span class="stamnt">i</span> 1 0 .5 9.00 100 30 30 <span class="stamnt">i</span> 1 1 3 9.00 100 0 20 <span class="stamnt">i</span> 1 4.5 . 9.00 1 0 100 <span class="stamnt">e</span> <span class="csdtag"></CsScore></span> <span class="csdtag"></CsoundSynthesizer></span> </pre> </div> </div> <p><br class="example-break" /> </p> </div> <div class="refsect1" title="Credits"> <a id="idp46194264"></a> <h2>Credits</h2> <p> </p> <table border="0" summary="Simple list" class="simplelist"> <tr> <td>Author: Michael Gogins (after Perry Cook)</td> </tr> <tr> <td>Irreducible Productions</td> </tr> <tr> <td>New York, NY</td> </tr> </table> <p> </p> <p>New in Csound version 5.11</p> </div> </div> <div class="navfooter"> <hr /> <table width="100%" summary="Navigation footer"> <tr> <td width="40%" align="left"><a accesskey="p" href="STKVoicForm.html">Prev</a> </td> <td width="20%" align="center"> <a accesskey="u" href="OpcodesTop.html">Up</a> </td> <td width="40%" align="right"> <a accesskey="n" href="STKWurley.html">Next</a></td> </tr> <tr> <td width="40%" align="left" valign="top">STKVoicForm </td> <td width="20%" align="center"> <a accesskey="h" href="index.html">Home</a> </td> <td width="40%" align="right" valign="top"> STKWurley</td> </tr> </table> </div> </body> </html>