<?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>scale</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="UtilityOther.html" title="Other Csound Utilities (CS, CSB64ENC, ENVEXT, EXTRACTOR, MAKECSD, MIXER, SCALE, MKDB)" /> <link rel="prev" href="mixer.html" title="mixer" /> <link rel="next" href="mkdb.html" title="mkdb" /> </head> <body> <div class="navheader"> <table width="100%" summary="Navigation header"> <tr> <th colspan="3" align="center">scale</th> </tr> <tr> <td width="20%" align="left"><a accesskey="p" href="mixer.html">Prev</a> </td> <th width="60%" align="center">Other Csound Utilities (CS, CSB64ENC, ENVEXT, EXTRACTOR, MAKECSD, MIXER, SCALE, MKDB)</th> <td width="20%" align="right"> <a accesskey="n" href="mkdb.html">Next</a></td> </tr> </table> <hr /> </div> <div class="refentry"> <a id="scaleutility"></a> <div class="titlepage"></div> <div class="refnamediv"> <h2> <span class="refentrytitle">scale</span> </h2> <p>scale — Scale the amplitude of a sound file. <a id="IndexScaleUtility" class="indexterm"></a> </p> </div> <div class="refsect1"> <a id="idm281472809754168"></a> <h2>Description</h2> <p> Takes a sound file and scales it by applying a gain, either constant or variable. The scale can be specified as a multiplier, a maximum or a percentage of 0db. </p> </div> <div class="refsect1"> <a id="idm281472809710472"></a> <h2>Syntax</h2> <pre class="synopsis"><span class="command"><strong>scale</strong></span> [OPTIONS ... ] infile</pre> </div> <div class="refsect1"> <a id="idm281472809708424"></a> <h2>Initialization</h2> <p> Flags: </p> <div class="itemizedlist"> <ul class="itemizedlist" style="list-style-type: disc; "> <li class="listitem"> <p> -<span class="emphasis"><em>A</em></span> = Generate an AIFF outout file. </p> </li> <li class="listitem"> <p> -<span class="emphasis"><em>W</em></span> = Generate an WAV outout file. </p> </li> <li class="listitem"> <p> -<span class="emphasis"><em>h</em></span> = Generate an outout file with no header. </p> </li> <li class="listitem"> <p> -<span class="emphasis"><em>c</em></span> = Generate 8-bit signed_char sound samples. </p> </li> <li class="listitem"> <p> -<span class="emphasis"><em>a</em></span> = Generate alaw sound samples. </p> </li> <li class="listitem"> <p> -<span class="emphasis"><em>u</em></span> = Generate ulaw sound samples. </p> </li> <li class="listitem"> <p> -<span class="emphasis"><em>s</em></span> = Generate short integer sound samples. </p> </li> <li class="listitem"> <p> -<span class="emphasis"><em>l</em></span> = Generate long (32 bit) integer sound samples. </p> </li> <li class="listitem"> <p> -<span class="emphasis"><em>f</em></span> = Generate floating point samples. </p> </li> <li class="listitem"> <p> -<span class="emphasis"><em>F arg</em></span> = Specifies the gain to be applied. If arg is a floating point number that gain is applied uniformly to the input. Alternatively it could be a file name which specifies a breakpoint file for varying the gain for different periods. </p> </li> <li class="listitem"> <p> -<span class="emphasis"><em>M fpnum</em></span> = Scales the input so the maximum absolute displacement is the value given. </p> </li> <li class="listitem"> <p> -<span class="emphasis"><em>P fpnum</em></span> = Scales the input so the maximum absolute displacement is the pencentage given of 0db. </p> </li> <li class="listitem"> <p> -<span class="emphasis"><em>R</em></span> = Continually rewrite the header while writing soundfile (WAV/AIFF). </p> </li> <li class="listitem"> <p> -<span class="emphasis"><em>H integer</em></span> = Show a "heart-beat" to indicate progress, in style 1, 2 or 3. </p> </li> <li class="listitem"> <p> -<span class="emphasis"><em>N</em></span> = Alert call (usually ringing the bell) when finished. </p> </li> <li class="listitem"> <p> -<span class="emphasis"><em>o fname</em></span> = output file name (default: test.wav) </p> </li> </ul> </div> <p> </p> </div> <div class="refsect1"> <a id="idm281472809686136"></a> <h2>Examples</h2> <p> </p> <pre class="programlisting"> <span class="emphasis"><em>scale</em></span> -s -W -F 0.96 -o out.wav sound.wav</pre> <p> This creates a new sound file with a constant gain of 0.96. It is particularly useful if the input file is in floating point format. </p> </div> <div class="refsect1"> <a id="idm281472809683656"></a> <h2>Credits</h2> <p>Author: John ffitch</p> <p>1994</p> </div> </div> <div class="navfooter"> <hr /> <table width="100%" summary="Navigation footer"> <tr> <td width="40%" align="left"><a accesskey="p" href="mixer.html">Prev</a> </td> <td width="20%" align="center"> <a accesskey="u" href="UtilityOther.html">Up</a> </td> <td width="40%" align="right"> <a accesskey="n" href="mkdb.html">Next</a></td> </tr> <tr> <td width="40%" align="left" valign="top">mixer </td> <td width="20%" align="center"> <a accesskey="h" href="index.html">Home</a> </td> <td width="40%" align="right" valign="top"> mkdb</td> </tr> </table> </div> </body> </html>