<?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>pvscross</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="pvscent.html" title="pvscent" />
<link rel="next" href="pvsdemix.html" title="pvsdemix" />
</head>
<body>
<div class="navheader">
<table width="100%" summary="Navigation header">
<tr>
<th colspan="3" align="center">pvscross</th>
</tr>
<tr>
<td width="20%" align="left"><a accesskey="p" href="pvscent.html">Prev</a> </td>
<th width="60%" align="center">Orchestra Opcodes and Operators</th>
<td width="20%" align="right"> <a accesskey="n" href="pvsdemix.html">Next</a></td>
</tr>
</table>
<hr />
</div>
<div class="refentry" title="pvscross">
<a id="pvscross"></a>
<div class="titlepage"></div>
<a id="IndexPvscross" class="indexterm"></a>
<div class="refnamediv">
<h2>
<span class="refentrytitle">pvscross</span>
</h2>
<p>pvscross —
Performs cross-synthesis between two source fsigs.
</p>
</div>
<div class="refsect1" title="Description">
<a id="idp38502408"></a>
<h2>Description</h2>
<p>
Performs cross-synthesis between two source fsigs.
</p>
</div>
<div class="refsect1" title="Syntax">
<a id="idp38541912"></a>
<h2>Syntax</h2>
<pre class="synopsis">fsig <span class="command"><strong>pvscross</strong></span> fsrc, fdest, kamp1, kamp2</pre>
</div>
<div class="refsect1" title="Performance">
<a id="idp38542920"></a>
<h2>Performance</h2>
<p>
The operation of this opcode is identical to that of <a class="link" href="pvcross.html" title="pvcross"><em class="citetitle">pvcross</em></a> (q.v.), except in using <span class="emphasis"><em>fsig</em></span>s rather than analysis files, and the absence of spectral envelope preservation. The amplitudes from <span class="emphasis"><em>fsrc</em></span> and <span class="emphasis"><em>fdest</em></span> (using scale factors <span class="emphasis"><em>kamp1</em></span> for <span class="emphasis"><em>fsrc</em></span> and <span class="emphasis"><em>kamp2</em></span> for <span class="emphasis"><em>fdest</em></span>) are applied to the frequencies of <span class="emphasis"><em>fsrc</em></span>. <span class="emphasis"><em>kamp1</em></span> and <span class="emphasis"><em>kamp2</em></span> must not exceed the range 0 to 1.
</p>
<p>
With this opcode, cross-synthesis can be performed on real-time audio input, by using <a class="link" href="pvsanal.html" title="pvsanal"><em class="citetitle">pvsanal</em></a> to generate <span class="emphasis"><em>fsrc</em></span> and <span class="emphasis"><em>fdest</em></span>. These must have the same format.
</p>
<div class="warning" title="Warning" style="margin-left: 0.5in; margin-right: 0.5in;">
<table border="0" summary="Warning">
<tr>
<td rowspan="2" align="center" valign="top" width="25">
<img alt="[Warning]" src="images/warning.png" />
</td>
<th align="left">Warning</th>
</tr>
<tr>
<td align="left" valign="top">
<p>
It is unsafe to use the same f-variable for both input and output of pvs opcodes. Using the same one might lead to undefined behavior on some opcodes. Use a different one on the left and right sides of the opcode.
</p>
</td>
</tr>
</table>
</div>
</div>
<div class="refsect1" title="Examples">
<a id="idp38548296"></a>
<h2>Examples</h2>
<p>
Here is an example of the use of the <span class="emphasis"><em>pvscross</em></span> opcode. It uses the file <a class="ulink" href="examples/pvscross.csd" target="_top"><em class="citetitle">pvscross.csd</em></a>.
</p>
<div class="example">
<a id="idp38549504"></a>
<p class="title">
<strong>Example 648. Example of the <span class="emphasis"><em>pvscross</em></span> 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>
<pre class="programlisting">
<span class="csdtag"><CsoundSynthesizer></span>
<span class="csdtag"><CsOptions></span>
-odac
<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> 16
<span class="ohdr">nchnls</span> <span class="op">=</span> 1
<span class="ohdr">0dbfs</span> <span class="op">=</span> 1
<span class="comment">;; example written by joachim heintz 2009</span>
<span class="oblock">instr</span> 1
ipermut <span class="op">=</span> p4<span class="comment">; 1 = change order of soundfiles </span>
ifftsize <span class="op">=</span> 1024
ioverlap <span class="op">=</span> ifftsize <span class="op">/</span> 4
iwinsize <span class="op">=</span> ifftsize
iwinshape <span class="op">=</span> 1<span class="comment">; von-Hann window</span>
Sfile1 <span class="op">=</span> "fox.wav"
Sfile2 <span class="op">=</span> "wave.wav"
ain1 <span class="opc">soundin</span> Sfile1
ain2 <span class="opc">soundin</span> Sfile2
fftin1 <span class="opc">pvsanal</span> ain1, ifftsize, ioverlap, iwinsize, iwinshape<span class="comment">; fft-analysis of file 1</span>
fftin2 <span class="opc">pvsanal</span> ain2, ifftsize, ioverlap, iwinsize, iwinshape<span class="comment">; fft-analysis of file 2</span>
ktrans <span class="opc">linseg</span> 0, p3, 1<span class="comment">; linear transition </span>
<span class="octrl">if</span> ipermut <span class="op">==</span> 1 then
fcross <span class="opc">pvscross</span> fftin2, fftin1, ktrans, 1<span class="op">-</span>ktrans
<span class="octrl">else</span>
fcross <span class="opc">pvscross</span> fftin1, fftin2, ktrans, 1<span class="op">-</span>ktrans
<span class="octrl">endif</span>
aout <span class="opc">pvsynth</span> fcross
<span class="opc">out</span> aout
<span class="oblock">endin</span>
<span class="csdtag"></CsInstruments></span>
<span class="csdtag"><CsScore></span>
<span class="stamnt">i</span> 1 0 2.757 0<span class="comment">; frequencies from fox. wav; amplitudes moving from wave to fox</span>
<span class="stamnt">i</span> 1 3 2.757 1<span class="comment">; frequencies from wave.wav, amplitudes moving from fox to wave</span>
<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="See Also">
<a id="idp38551992"></a>
<h2>See Also</h2>
<p>
<a class="link" href="pvsanal.html" title="pvsanal"><em class="citetitle">pvsanal</em></a>,
<a class="link" href="pvsynth.html" title="pvsynth"><em class="citetitle">pvsynth</em></a>,
<a class="link" href="pvsadsyn.html" title="pvsadsyn"><em class="citetitle">pvsadsyn</em></a>
</p>
</div>
<div class="refsect1" title="Credits">
<a id="idp38553968"></a>
<h2>Credits</h2>
<p>
</p>
<table border="0" summary="Simple list" class="simplelist">
<tr>
<td>Author: Richard Dobson</td>
</tr>
<tr>
<td>August 2001 </td>
</tr>
</table>
<p>
</p>
<p>November 2003. Thanks to Kanata Motohashi, fixed the link to the <span class="emphasis"><em>pvcross</em></span> opcode.</p>
<p>New in version 4.13</p>
</div>
</div>
<div class="navfooter">
<hr />
<table width="100%" summary="Navigation footer">
<tr>
<td width="40%" align="left"><a accesskey="p" href="pvscent.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="pvsdemix.html">Next</a></td>
</tr>
<tr>
<td width="40%" align="left" valign="top">pvscent </td>
<td width="20%" align="center">
<a accesskey="h" href="index.html">Home</a>
</td>
<td width="40%" align="right" valign="top"> pvsdemix</td>
</tr>
</table>
</div>
</body>
</html>
distrib
>
Mageia
>
5
>
x86_64
>
media
>
core-release
>
by-pkgid
>
b707d9a4ee443103660a75ccb6e51334
>
files
>
2425
