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<h2>
<span class="refentrytitle">filesr</span>
</h2>
<p>filesr —
Returns the sample rate of a sound file.
</p>
</div>
<div class="refsect1">
<a id="idm281472937692216"></a>
<h2>Description</h2>
<p>
Returns the sample rate of a sound file.
</p>
</div>
<div class="refsect1">
<a id="idm281472937690872"></a>
<h2>Syntax</h2>
<pre class="synopsis">ir <span class="command"><strong>filesr</strong></span> ifilcod [, iallowraw]</pre>
</div>
<div class="refsect1">
<a id="idm281472937688664"></a>
<h2>Initialization</h2>
<p>
<span class="emphasis"><em>ifilcod</em></span> -- sound file to be queried
</p>
<p>
<span class="emphasis"><em>iallowraw</em></span> -- (Optional) Allow raw sound files (default=1)
</p>
</div>
<div class="refsect1">
<a id="idm281472937625000"></a>
<h2>Performance</h2>
<p>
<span class="emphasis"><em>filesr</em></span> returns the sample rate of the sound file <span class="emphasis"><em>ifilcod</em></span>. <span class="emphasis"><em>filesr</em></span> can return the sample rate of convolve and PVOC files if the <span class="emphasis"><em>iallowraw</em></span> flag is not zero (it is non-zero by default).
</p>
</div>
<div class="refsect1">
<a id="idm281472937621944"></a>
<h2>Examples</h2>
<p>
Here is an example of the filesr opcode. It uses the file <a class="ulink" href="examples/filesr.csd" target="_top"><em class="citetitle">filesr.csd</em></a>,
and <a class="ulink" href="examples/beats.wav" target="_top"><em class="citetitle">beats.wav</em></a>.
</p>
<div class="example">
<a id="idm281472937619240"></a>
<p class="title">
<strong>Example 273. Example of the filesr 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="idm281472769907368"></a>
<pre class="programlisting">
<span class="nt"><CsoundSynthesizer></span>
<span class="nt"><CsOptions></span>
<span class="c1">; Select audio/midi flags here according to platform</span>
-odac <span class="c1">;;;realtime audio out</span>
<span class="c1">;-iadc ;;;uncomment -iadc if realtime audio input is needed too</span>
<span class="c1">; For Non-realtime ouput leave only the line below:</span>
<span class="c1">; -o filesr.wav -W ;;; for file output any platform</span>
<span class="nt"></CsOptions></span>
<span class="nt"><CsInstruments></span>
<span class="vg">sr</span> <span class="o">=</span> <span class="mi">44100</span>
<span class="vg">ksmps</span> <span class="o">=</span> <span class="mi">32</span>
<span class="vg">nchnls</span> <span class="o">=</span> <span class="mi">2</span>
<span class="vg">0dbfs</span> <span class="o">=</span> <span class="mi">1</span>
<span class="c1">;after an example from Jonathan Murphy</span>
<span class="kd">instr</span> <span class="nf">1</span>
<span class="c1">;load sound into an ftable</span>
S<span class="n">file</span> <span class="nb">strcpy</span> <span class="s">"beats.wav"</span>
i<span class="n">len</span> <span class="nb">filelen</span> S<span class="n">file</span>
i<span class="n">sr</span> <span class="nb">filesr</span> S<span class="n">file</span>
i<span class="n">samps</span> <span class="o">=</span> i<span class="n">len</span> <span class="o">*</span> i<span class="n">sr</span>
<span class="c1">;adjust the length of the table to be a power of two closest</span>
<span class="c1">;to the actual size of the sound </span>
i<span class="n">size</span> <span class="nb">init</span> <span class="mi">1</span>
<span class="nl">loop</span><span class="p">:</span>
i<span class="n">size</span> <span class="o">=</span> i<span class="n">size</span> <span class="o">*</span> <span class="mi">2</span>
<span class="k">if</span> <span class="p">(</span>i<span class="n">size</span> <span class="o"><</span> i<span class="n">samps</span><span class="p">)</span> <span class="k">igoto</span> <span class="nl">loop</span>
i<span class="n">tab</span> <span class="nb">ftgen</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> i<span class="n">size</span><span class="p">,</span> <span class="mi">1</span><span class="p">,</span> S<span class="n">file</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">0</span>
<span class="nb">prints</span> <span class="s">"sample rate = %f, size = %f</span><span class="se">\n</span><span class="s">"</span><span class="p">,</span> i<span class="n">sr</span><span class="p">,</span> i<span class="n">size</span> <span class="c1">;prints them</span>
<span class="kd">endin</span>
<span class="nt"></CsInstruments></span>
<span class="nt"><CsScore></span>
<span class="nb">i</span><span class="mi">1</span> <span class="mi">0</span> <span class="mi">2</span>
<span class="nb">e</span>
<span class="nt"></CsScore></span>
<span class="nt"></CsoundSynthesizer></span>
</pre>
</div>
</div>
</div>
<p><br class="example-break" />
The audio file <span class="quote">“<span class="quote">beats.wav</span>”</span> was sampled at 44.1 KHz. So <span class="emphasis"><em>filesr</em></span>'s output should include a line like this:
</p>
<pre class="screen">
sample rate = 44100.000000, size = 131072.000000
</pre>
<p>
</p>
</div>
<div class="refsect1">
<a id="idm281472937613320"></a>
<h2>See Also</h2>
<p>
<a class="link" href="filebit.html" title="filebit"><em class="citetitle">filebit</em></a>,
<a class="link" href="filelen.html" title="filelen"><em class="citetitle">filelen</em></a>,
<a class="link" href="filenchnls.html" title="filenchnls"><em class="citetitle">filenchnls</em></a>,
<a class="link" href="filepeak.html" title="filepeak"><em class="citetitle">filepeak</em></a>
</p>
</div>
<div class="refsect1">
<a id="idm281472937608296"></a>
<h2>Credits</h2>
<p>
</p>
<table border="0" summary="Simple list" class="simplelist">
<tr>
<td>Author: Matt Ingalls</td>
</tr>
<tr>
<td>July 1999</td>
</tr>
</table>
<p>
</p>
<p>New in Csound version 3.57</p>
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