<?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>mp3scal</title>
<link rel="stylesheet" type="text/css" href="csound.css" />
<link rel="stylesheet" type="text/css" href="syntax-highlighting.css" />
<meta name="generator" content="DocBook XSL Stylesheets Vsnapshot" />
<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="mp3len.html" title="mp3len" />
<link rel="next" href="mpulse.html" title="mpulse" />
</head>
<body>
<div class="navheader">
<table width="100%" summary="Navigation header">
<tr>
<th colspan="3" align="center">mp3scal</th>
</tr>
<tr>
<td width="20%" align="left"><a accesskey="p" href="mp3len.html">Prev</a> </td>
<th width="60%" align="center">Orchestra Opcodes and Operators</th>
<td width="20%" align="right"> <a accesskey="n" href="mpulse.html">Next</a></td>
</tr>
</table>
<hr />
</div>
<div class="refentry">
<a id="mp3scal"></a>
<div class="titlepage"></div>
<a id="IndexMp3scal" class="indexterm"></a>
<div class="refnamediv">
<h2>
<span class="refentrytitle">mp3scal</span>
</h2>
<p>mp3scal —
Phase-locked vocoder processing with onset detection/processing, 'tempo-scaling'.
</p>
</div>
<div class="refsect1">
<a id="idm281472912095176"></a>
<h2>Description</h2>
<p>
<span class="emphasis"><em>mp3scal</em></span> implements phase-locked vocoder
processing from mp3-format disk files, resampling if necessary.
</p>
<p>
This opcode allows for time and frequency-independent scaling. Time is advanced internally. The quality of the effect is generally improved with phase locking switched on.
</p>
<p>
<span class="emphasis"><em>mp3scal</em></span> will also scale pitch, independently of frequency, using a transposition factor (k-rate).
</p>
</div>
<div class="refsect1">
<a id="idm281472912029992"></a>
<h2>Syntax</h2>
<pre class="synopsis">asig, asig2, ktime <span class="command"><strong>mp3scal</strong></span> Sfile, ktimescal, kpitch, kamp[, iskip, ifftsize, idecim, ilock]
</pre>
</div>
<div class="refsect1">
<a id="idm281472912027912"></a>
<h2>Initialization</h2>
<p>
<span class="emphasis"><em>Sfile</em></span> -- source soundfile stereo mp3 files.
</p>
<p>
<span class="emphasis"><em>ifftsize</em></span> -- FFT size (power-of-two), defaults to 2048.
</p>
<p>
<span class="emphasis"><em>idecim</em></span> -- decimation, defaults to 4 (meaning hopsize = fftsize/4)
</p>
<p>
<span class="emphasis"><em>iskip</em></span> -- skiptime in seconds, defaults to 1.
</p>
<p>
<span class="emphasis"><em>ilock</em></span> -- 0 or 1, to switch phase-locking
on/off, defaults to 1.
</p>
</div>
<div class="refsect1">
<a id="idm281472912022840"></a>
<h2>Performance</h2>
<p>
<span class="emphasis"><em>ktimescal</em></span> -- timescaling ratio, < 1
stretch, > 1 contract. Non-negative numbers only.
</p>
<p>
<span class="emphasis"><em>kamp</em></span> -- amplitude scaling
</p>
<p>
<span class="emphasis"><em>kpitch</em></span> -- grain pitch scaling (1=normal pitch, < 1 lower, > 1 higher)
</p>
<p>
<span class="emphasis"><em>ktime</em></span> -- time stamp
</p>
<p>
<span class="emphasis"><em>asig</em></span>, <span class="emphasis"><em>asig2</em></span> -- stereo output signals
</p>
</div>
<div class="refsect1">
<a id="idm281472912017160"></a>
<h2>Examples</h2>
<p>
Here is an example of the mp3scal opcode. It uses the file <a class="ulink" href="examples/mp3scal.csd" target="_top"><em class="citetitle">mp3scal.csd</em></a>.
</p>
<div class="example">
<a id="idm281472912015304"></a>
<p class="title">
<strong>Example 582. Example of the mp3scal 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="idm281472735423848"></a>
<pre class="programlisting">
<span class="nt"><CsoundSynthesizer></span>
<span class="nt"><CsOptions></span>
<span class="nt"></CsOptions></span>
<span class="nt"><CsInstruments></span>
<span class="vg">nchnls</span><span class="o">=</span><span class="mi">2</span>
<span class="vg">ksmps</span><span class="o">=</span><span class="mi">64</span>
<span class="vg">sr</span><span class="o">=</span><span class="mi">44100</span>
<span class="kd">instr</span> <span class="nf">1</span>
S<span class="n">File</span> <span class="o">=</span> <span class="nb">p4</span>
<span class="nb">p3</span> <span class="o">=</span> <span class="nb">mp3len</span><span class="p">(</span>S<span class="n">File</span><span class="p">)</span><span class="o">/</span><span class="nb">p5</span>
a<span class="n">1</span><span class="p">,</span>a<span class="n">2</span><span class="p">,</span>k<span class="n">2</span> <span class="nb">mp3scal</span> S<span class="n">File</span><span class="p">,</span><span class="nb">p5</span><span class="p">,</span><span class="mi">1</span><span class="p">,</span><span class="mi">1</span>
<span class="nb">outs</span> a<span class="n">1</span><span class="p">,</span>a<span class="n">2</span>
<span class="kd">endin</span>
<span class="nt"></CsInstruments></span>
<span class="nt"><CsScore></span>
<span class="nb">i</span><span class="mf">1.1</span> <span class="mi">0</span> <span class="mi">1</span> <span class="s">"beats.mp3"</span> <span class="mf">.75</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="idm281472912011016"></a>
<h2>Credits</h2>
<p>
</p>
<table border="0" summary="Simple list" class="simplelist">
<tr>
<td>Author: Victor Lazzarini</td>
</tr>
<tr>
<td>April 2016</td>
</tr>
</table>
<p>
</p>
<p>New in version 6.07</p>
<p>April 2016.</p>
</div>
</div>
<div class="navfooter">
<hr />
<table width="100%" summary="Navigation footer">
<tr>
<td width="40%" align="left"><a accesskey="p" href="mp3len.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="mpulse.html">Next</a></td>
</tr>
<tr>
<td width="40%" align="left" valign="top">mp3len </td>
<td width="20%" align="center">
<a accesskey="h" href="index.html">Home</a>
</td>
<td width="40%" align="right" valign="top"> mpulse</td>
</tr>
</table>
</div>
</body>
</html>
distrib
>
Mageia
>
7
>
armv7hl
>
media
>
core-release
>
by-pkgid
>
5fcfcb7517038d1f44ab4e478e6e61fa
>
files
>
2496
