<?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>pvsarp</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="pvsanal.html" title="pvsanal" />
<link rel="next" href="pvsbandp.html" title="pvsbandp" />
</head>
<body>
<div class="navheader">
<table width="100%" summary="Navigation header">
<tr>
<th colspan="3" align="center">pvsarp</th>
</tr>
<tr>
<td width="20%" align="left"><a accesskey="p" href="pvsanal.html">Prev</a> </td>
<th width="60%" align="center">Orchestra Opcodes and Operators</th>
<td width="20%" align="right"> <a accesskey="n" href="pvsbandp.html">Next</a></td>
</tr>
</table>
<hr />
</div>
<div class="refentry" title="pvsarp">
<a id="pvsarp"></a>
<div class="titlepage"></div>
<a id="Indexpvsarp" class="indexterm"></a>
<div class="refnamediv">
<h2>
<span class="refentrytitle">pvsarp</span>
</h2>
<p>pvsarp —
Arpeggiate the spectral components of a streaming pv signal.
</p>
</div>
<div class="refsect1" title="Description">
<a id="idp38088776"></a>
<h2>Description</h2>
<p>
This opcode arpeggiates spectral components, by amplifying one bin and attenuating
all the others around it. Used with an LFO it will provide a spectral arpeggiator similar to Trevor Wishart's
CDP program specarp.
</p>
</div>
<div class="refsect1" title="Syntax">
<a id="idp38089608"></a>
<h2>Syntax</h2>
<pre class="synopsis">fsig <span class="command"><strong>pvsarp</strong></span> fsigin, kbin, kdepth, kgain</pre>
</div>
<div class="refsect1" title="Performance">
<a id="idp38188032"></a>
<h2>Performance</h2>
<p>
<span class="emphasis"><em>fsig</em></span> -- output pv stream
</p>
<p>
<span class="emphasis"><em>fsigin</em></span> -- input pv stream
</p>
<p>
<span class="emphasis"><em>kbin</em></span> -- target bin, normalised 0 - 1 (0Hz - Nyquist).
</p>
<p>
<span class="emphasis"><em>kdepth</em></span> -- depth of attenuation of surrounding bins
</p>
<p>
<span class="emphasis"><em>kgain</em></span> -- gain boost applied to target bin
</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="idp38191240"></a>
<h2>Examples</h2>
<p>
Here is an example of the pvsarp opcode. It uses the file <a class="ulink" href="examples/pvsarp.csd" target="_top"><em class="citetitle">pvsarp.csd</em></a>
</p>
<div class="example">
<a id="idp38192192"></a>
<p class="title">
<strong>Example 636. Example of the pvsarp 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>
<span class="comment">; Select audio/midi flags here according to platform</span>
<span class="comment">; Audio out Audio in No messages</span>
-odac -iadc <span class="comment">;;;-d RT audio I/O</span>
<span class="comment">; For Non-realtime ouput leave only the line below:</span>
<span class="comment">; -o pvsarp.wav -W ;;; for file output any platform</span>
<span class="csdtag"></CsOptions></span>
<span class="csdtag"><CsInstruments></span>
<span class="comment">; Initialize the global variables.</span>
<span class="ohdr">sr</span> <span class="op">=</span> 44100
<span class="ohdr">ksmps</span> <span class="op">=</span> 100
<span class="ohdr">nchnls</span> <span class="op">=</span> 1
<span class="ohdr">0dbfs</span> <span class="op">=</span> 1
<span class="oblock">instr</span> 1
asig <span class="opc">in</span> <span class="comment">; get the signal in</span>
idepth <span class="op">=</span> p4
fsig <span class="opc">pvsanal</span> asig, 1024, 256, 1024, 1 <span class="comment">; analyse it</span>
kbin <span class="opc">oscili</span> 0.1, 0.5, 1 <span class="comment">; ftable 1 in the 0-1 range</span>
ftps <span class="opc">pvsarp</span> fsig, kbin<span class="op">+</span>0.01, idepth, 2 <span class="comment">; arpeggiate it (range 220.5 - 2425.5)</span>
atps <span class="opc">pvsynth</span> ftps <span class="comment">; synthesise it</span>
<span class="opc">out</span> atps
<span class="oblock">endin</span>
<span class="csdtag"></CsInstruments></span>
<span class="csdtag"><CsScore></span>
<span class="stamnt">f</span> 1 0 4096 10 1 <span class="comment">;sine wave</span>
<span class="stamnt">i</span> 1 0 10 0.9
<span class="stamnt">i</span> 1 + 10 0.5
<span class="stamnt">e</span>
<span class="csdtag"></CsScore></span>
<span class="csdtag"></CsoundSynthesizer></span>
</pre>
</div>
</div>
<p><br class="example-break" />
</p>
<p>
Here is another example of the pvsarp opcode. It uses the file <a class="ulink" href="examples/pvsarp2.csd" target="_top"><em class="citetitle">pvsarp2.csd</em></a>
</p>
<div class="example">
<a id="idp38195016"></a>
<p class="title">
<strong>Example 637. Example of the pvsarp 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>
<span class="comment">; Select audio/midi flags here according to platform</span>
<span class="comment">; Audio out Audio in</span>
-odac <span class="comment">;;;RT audio I/O</span>
<span class="comment">; For Non-realtime ouput leave only the line below:</span>
<span class="comment">; -o pvsarp2.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> 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
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"
ain1 <span class="opc">soundin</span> Sfile1
fftin <span class="opc">pvsanal</span> ain1, ifftsize, ioverlap, iwinsize, iwinshape
<span class="comment">;make 3 independently moving accentuations in the spectrum</span>
kbin1 <span class="opc">linseg</span> 0.05, p3<span class="op">/</span>2, .05, p3<span class="op">/</span>2, .05
farp1 <span class="opc">pvsarp</span> fftin, kbin1, .9, 10
kbin2 <span class="opc">linseg</span> 0.075, p3<span class="op">/</span>2, .1, p3<span class="op">/</span>2, .075
farp2 <span class="opc">pvsarp</span> fftin, kbin2, .9, 10
kbin3 <span class="opc">linseg</span> 0.02, p3<span class="op">/</span>2, .03, p3<span class="op">/</span>2, .04
farp3 <span class="opc">pvsarp</span> fftin, kbin3, .9, 10
<span class="comment">;resynthesize and add them</span>
aout1 <span class="opc">pvsynth</span> farp1
aout2 <span class="opc">pvsynth</span> farp2
aout3 <span class="opc">pvsynth</span> farp3
aout <span class="op">=</span> aout1<span class="op">*</span>.3 <span class="op">+</span> aout2<span class="op">*</span>.3 <span class="op">+</span> aout3<span class="op">*</span>.3
<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 3
<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="idp38197272"></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="idp38199248"></a>
<h2>Credits</h2>
<p>
</p>
<table border="0" summary="Simple list" class="simplelist">
<tr>
<td>Author: Victor Lazzarini</td>
</tr>
<tr>
<td>April 2005 </td>
</tr>
</table>
<p>
</p>
<p>New plugin in version 5</p>
<p>April 2005.</p>
</div>
</div>
<div class="navfooter">
<hr />
<table width="100%" summary="Navigation footer">
<tr>
<td width="40%" align="left"><a accesskey="p" href="pvsanal.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="pvsbandp.html">Next</a></td>
</tr>
<tr>
<td width="40%" align="left" valign="top">pvsanal </td>
<td width="20%" align="center">
<a accesskey="h" href="index.html">Home</a>
</td>
<td width="40%" align="right" valign="top"> pvsbandp</td>
</tr>
</table>
</div>
</body>
</html>
distrib
>
Mageia
>
5
>
x86_64
>
media
>
core-release
>
by-pkgid
>
b707d9a4ee443103660a75ccb6e51334
>
files
>
2415
