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<title>libvorbis - function - vorbis_synthesis_halfrate</title>
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<td><p class=tiny>libvorbis documentation</p></td>
<td align=right><p class=tiny>libvorbis version 1.3.2 - 20101101</p></td>
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<h1>vorbis_synthesis_halfrate</h1>
<p><i>declared in "vorbis/codec.h";</i></p>
<p>This function puts the Vorbis decoder into or out of half-rate
mode. In half-rate mode, the audio is decoded to only half its original
sampling rate. Half-rate mode speeds up decoding at the expense of
decoded audio quality.</p>
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<pre><b>
extern int vorbis_synthesis_halfrate(vorbis_info *v,int flag);
</b></pre>
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<h3>Parameters</h3>
<dl>
<dt><i>v</i></dt>
<dd>The <a href="vorbis_info.html">vorbis_info</a> structure for the
decoder instance.</dd>
<dt><i>flag</i></dt>
<dd>Whether half-rate mode is to be turned on or off. Zero turns it off;
nonzero turns it on.</dd>
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<h3>Return Values</h3>
<blockquote>
<li>0 on success.</li>
<li>-1 if half-rate mode could not be set.</li>
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<td><p class=tiny>copyright © 2010 Xiph.Org</p></td>
<td align=right><p class=tiny><a href="http://www.xiph.org/ogg/vorbis/index.html">Ogg Vorbis</a></p></td>
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<td><p class=tiny>libvorbis documentation</p></td>
<td align=right><p class=tiny>libvorbis version 1.3.2 - 20101101</p></td>
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