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<div class="refentry" title="diskin">
<a id="diskin"></a>
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<a id="IndexDiskin" class="indexterm"></a>
<div class="refnamediv">
<h2>
<span class="refentrytitle">diskin</span>
</h2>
<p>diskin —
Deprecated. Reads audio data from an external device or stream and can alter its pitch.
</p>
</div>
<div class="refsect1" title="Description">
<a id="idp80082984"></a>
<h2>Description</h2>
<p>
Deprecated. Reads audio data from an external device or stream and can alter its pitch.
</p>
</div>
<div class="refsect1" title="Syntax">
<a id="idp80083680"></a>
<h2>Syntax</h2>
<pre class="synopsis">ar1 [, ar2 [, ar3 [, ... arN]]] <span class="command"><strong>diskin</strong></span> ifilcod, kpitch [, iskiptim] \
[, iwraparound] [, iformat] [, iskipinit]</pre>
<p> Note the N was 24 in versions before 5.14, and 40 after.</p>
</div>
<div class="refsect1" title="Initialization">
<a id="idp80085248"></a>
<h2>Initialization</h2>
<p>
<span class="emphasis"><em>ifilcod</em></span> -- integer or character-string denoting the source soundfile name. An integer denotes the file soundin.filcod ; a character-string (in double quotes, spaces permitted) gives the filename itself, optionally a full pathname. If not a full path, the named file is sought first in the current directory, then in that given by the environment variable <a class="link" href="CommandEnvironment.html" title="Csound Environment Variables"><em class="citetitle">SSDIR</em></a> (if defined) then by <a class="link" href="CommandEnvironment.html" title="Csound Environment Variables"><em class="citetitle">SFDIR</em></a>. See also <a class="link" href="GEN01.html" title="GEN01"><em class="citetitle">GEN01</em></a>.
</p>
<p>
<span class="emphasis"><em>iskptim</em></span> (optional) -- time in seconds of input sound to be skipped. The default value is 0.
</p>
<p>
<span class="emphasis"><em>iformat</em></span> (optional) -- specifies the audio data file format:
</p>
<div class="itemizedlist">
<ul class="itemizedlist" type="disc">
<li class="listitem">
<p>1 = 8-bit signed char (high-order 8 bits of a 16-bit integer)</p>
</li>
<li class="listitem">
<p>2 = 8-bit A-law bytes</p>
</li>
<li class="listitem">
<p>3 = 8-bit U-law bytes</p>
</li>
<li class="listitem">
<p>4 = 16-bit short integers</p>
</li>
<li class="listitem">
<p>5 = 32-bit long integers</p>
</li>
<li class="listitem">
<p>6 = 32-bit floats</p>
</li>
<li class="listitem">
<p>7 = 8-bit unsigned int (not available in Csound versions older than 5.00)</p>
</li>
<li class="listitem">
<p>8 = 24-bit int (not available in Csound versions older than 5.00)</p>
</li>
<li class="listitem">
<p>9 = 64-bit doubles (not available in Csound versions older than 5.00)</p>
</li>
</ul>
</div>
<p>
</p>
<p>
<span class="emphasis"><em>iwraparound</em></span> -- 1 = on, 0 = off (wraps
around to end of file either direction, enabling looping)
</p>
<p>
<span class="emphasis"><em>iskipinit</em></span> switches off all initialisation if
non zero (default =0). This was introduced in 4_23f13 and
csound5.
</p>
<p>
If <span class="emphasis"><em>iformat</em></span> = 0 it is taken from the soundfile header, and if no header from the Csound <a class="link" href="CommandFlags.html#FlagsMinusLowerO"><em class="citetitle">-o</em></a> command-line flag. The default value is 0.
</p>
</div>
<div class="refsect1" title="Performance">
<a id="idp80141768"></a>
<h2>Performance</h2>
<div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;">
<table border="0" summary="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><span class="emphasis"><em>diskin</em></span> is deprecated since it can crash easily under certain circumstances. Use <a class="link" href="diskin2.html" title="diskin2"><em class="citetitle">diskin2</em></a> instead.</p>
</td>
</tr>
</table>
</div>
<p>
<span class="emphasis"><em>kpitch</em></span> -- can be any real number. A negative number signifies backwards playback. The given number is a pitch ratio, where:
</p>
<div class="itemizedlist">
<ul class="itemizedlist" type="disc">
<li class="listitem">
<p><span class="emphasis"><em>1</em></span> = normal pitch</p>
</li>
<li class="listitem">
<p><span class="emphasis"><em>2</em></span> = 1 octave higher</p>
</li>
<li class="listitem">
<p><span class="emphasis"><em>3</em></span> = 12th higher, etc.</p>
</li>
<li class="listitem">
<p><span class="emphasis"><em>.5</em></span> = 1 octave lower</p>
</li>
<li class="listitem">
<p><span class="emphasis"><em>.25</em></span> = 2 octaves lower, etc.</p>
</li>
<li class="listitem">
<p><span class="emphasis"><em>-1</em></span> = normal pitch backwards</p>
</li>
<li class="listitem">
<p><span class="emphasis"><em>-2</em></span> = 1 octave higher backwards, etc.</p>
</li>
</ul>
</div>
<p>
</p>
<p>
<span class="emphasis"><em>diskin</em></span> is identical to <a class="link" href="soundin.html" title="soundin"><em class="citetitle">soundin</em></a> except that it can alter the pitch of the sound that is being read, and is capable of looping.
</p>
<div class="caution" title="Note to Windows users" style="margin-left: 0.5in; margin-right: 0.5in;">
<table border="0" summary="Caution: Note to Windows users">
<tr>
<td rowspan="2" align="center" valign="top" width="25">
<img alt="[Caution]" src="images/caution.png" />
</td>
<th align="left">Note to Windows users</th>
</tr>
<tr>
<td align="left" valign="top">
<p>
Windows users typically use back-slashes, <span class="quote">“<span class="quote">\</span>”</span>, when specifying the paths of their files. As an example, a Windows user might use the path <span class="quote">“<span class="quote">c:\music\samples\loop001.wav</span>”</span>. This is problematic because back-slashes are normally used to specify special characters.
</p>
<p>
To correctly specify this path in Csound, one may alternately:
</p>
<div class="itemizedlist">
<ul class="itemizedlist" type="disc">
<li class="listitem">
<p><span class="emphasis"><em>Use forward slashes</em></span>: c:/music/samples/loop001.wav</p>
</li>
<li class="listitem">
<p><span class="emphasis"><em>Use back-slash special characters, <span class="quote">“<span class="quote">\\</span>”</span></em></span>: c:\\music\\samples\\loop001.wav</p>
</li>
</ul>
</div>
<p>
</p>
</td>
</tr>
</table>
</div>
</div>
<div class="refsect1" title="Examples">
<a id="idp80150584"></a>
<h2>Examples</h2>
<p>
Here is an example of the diskin opcode. It uses the file <a class="ulink" href="examples/diskin.csd" target="_top"><em class="citetitle">diskin.csd</em></a>, <a class="ulink" href="examples/beats.wav" target="_top"><em class="citetitle">beats.wav</em></a>.
</p>
<div class="example">
<a id="idp80151968"></a>
<p class="title">
<strong>Example 1081. Example of the diskin 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>
-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 diskin.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
ktrans <span class="opc">linseg</span> 1, 5, 2, 10, <span class="op">-</span>2
a1 <span class="opc">diskin</span> "beats.wav", ktrans, 0, 1, 0, 32
<span class="opc">outs</span> a1, a1
<span class="oblock">endin</span>
<span class="csdtag"></CsInstruments></span>
<span class="csdtag"><CsScore></span>
<span class="stamnt">i</span> 1 0 15
<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="idp80154240"></a>
<h2>See Also</h2>
<p>
<a class="link" href="in.html" title="in"><em class="citetitle">in</em></a>,
<a class="link" href="inh.html" title="inh"><em class="citetitle">inh</em></a>,
<a class="link" href="ino.html" title="ino"><em class="citetitle">ino</em></a>,
<a class="link" href="inq.html" title="inq"><em class="citetitle">inq</em></a>,
<a class="link" href="ins.html" title="ins"><em class="citetitle">ins</em></a>,
<a class="link" href="soundin.html" title="soundin"><em class="citetitle">soundin</em></a> and
<a class="link" href="diskin2.html" title="diskin2"><em class="citetitle">diskin2</em></a>
</p>
</div>
<div class="refsect1" title="Credits">
<a id="idp80157984"></a>
<h2>Credits</h2>
<p>
</p>
<table border="0" summary="Simple list" class="simplelist">
<tr>
<td>Authors: Barry L. Vercoe, Matt Ingalls/Mike Berry</td>
</tr>
<tr>
<td>MIT, Mills College</td>
</tr>
<tr>
<td>1993-1997</td>
</tr>
</table>
<p>
</p>
<p>New in version 3.46</p>
<p>Warning to Windows users added by Kevin Conder, April 2002</p>
</div>
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