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13<h1>SND_CalcChannelVolume <IMG src="../image/NTR.gif" width="24" height="12" border="0" align=middle><IMG src="../image/TWL.gif" width="24" height="12" border="0" align=middle></h1>
14<h2>Syntax</h2>
15<dl>
16<dd><pre class="funcsynopsisinfo"><code>#include &lt;nitro/snd.h&gt;</code></pre></dd>
17<dd><pre class="funcprototype"><code class="funcprototype">u16 SND_CalcChannelVolume( int <var>dB</var> );</code><br></pre></dd>
18</dl>
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20      <h2>Arguments</h2>
21
22      <div class="variablelist">
23<table border="0">
24<col align="left" valign="top">
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26<tr>
27<td><em><strong><code>dB</code></strong></em></td>
28<td>The decibel value. Each unit is 0.1 dB and acceptable values are in the range of &ndash;72.3 dB to 0.0 dB.</td>
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35<div class="refsection" lang="ja"><a name="IDAOMUT"></a>
36      <h2>Return Values</h2>
37
38      <p>Returns the channel volume as a 16-bit value. The lower 8 bits store the volume value, while the upper 8 bits store the data shift value.</p>
39    </div>
40<div class="refsection" lang="ja"><a name="IDAVMUT"></a>
41      <h2>Description</h2>
42      <p>
43Calculates the value for the channel volume.
44</p>
45      <p>
46This gets a volume value that can be directly handled by the <tt class="function"><a href="SND_SetChannelVolume.html">SND_SetChannelVolume</a></tt> function. A volume value in the range of 0 to 127 is inside the lower 8 bits of the returned value. The  <code>SNDChannelDataShift</code> type is inside the upper 8 bits of the returned value.
47</p>
48    </div>
49<h2>See Also</h2>
50<p><a href="SND_SetChannelVolume.html"><code>SND_SetChannelVolume</code></a></p>
51<h2>Revision History</h2>
52<p>
532004/09/02 Added a description of units to <B>Arguments</B>. <br>2004/07/20 Initial version.
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