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8<title>THPConv - wav File Format</title>
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13<H1 align="left">The WAV File Format</H1>
14<H2>Description</H2>
15<P>The <CODE>THPConv</CODE> tool converts an ordinary <code>wav</code> file to THP audio data and can interleave it with THP movie data. The following restrictions apply however. </P>
16<BLOCKQUOTE><PRE><P>     - <strong><code>wav</code> files must be non-compressed 16-bit PCM data. </strong></P>
17<P>     - <strong>Monaural (one channel) and stereo (two channels) files are supported. </strong></P>
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20<P>If the <code>wav</code> file does not meet these requirements, the <CODE>THPConv</CODE> tool will output an error and stop processing. </P>
21<h2><font color="#FF0000">WAV File Notes</FONT></h2>
22<P>
23<STRONG>Note: </STRONG> If the playback frequency is set to 48,000 Hz, Revolution will output the audio data at 48,043 Hz. If the frequency is set to 32,000 Hz, it will output at 32,028 Hz. To maintain strict synchronization between the video data and audio data when THP movie data is played, be aware of this characteristic of Revolution. In practical terms, when creating THP movie data, it is necessary to either convert the audio data playback frequency in advance so that it matches the Revolution's characteristics, or else use the audio library (AX) functionality during THP movie data playback to convert the audio data playback frequency.<br><br>
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25When converting the audio data playback frequency in advance, run <CODE>THPConv</CODE> without specifying the <code>-on</code> option. There is no need to prepare a <code>wav</code> file with a playback frequency converted for Revolution. <br><br>
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27When converting the playback frequency in real time on the Revolution, execute <code>THPConv</code> with the <code>-on</code> option specified. When playing THP movie data created with the <code>-on</code> option, use <code>THPPlayerStrmAX</code>.
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31<STRONG>Note: </STRONG>  <code>wav</code> files having a playback frequency other than 48,000 Hz or 32,000 Hz can be specified for <code>THPConv</code>. When playing THP movie data created with such <code>wav</code> files, use <code>THPPlayerStrmAX</code>.<br><br>Further, when THP movie data is created with <code>wav</code> files having a playback frequency of 48,000Hz/32,000Hz, use <code>THPPlayerStrmAX</code>, if the playback frequency setting on the Revolution is different.
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35<STRONG>Note: </STRONG> If you want the THP movie data to contain more than one audio data set, make sure the number of channels and the playback frequencies for audio data sets are the same.
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38<H2>See Also</H2>
39<P>
40<A href="THPConv.html"><CODE>THPConv.exe</CODE></A>, <A href="AudioChange.html">Replacing THP Audio Data in THP Movie Data</A>, <A href="FileFormat.html">File Formats compatible with <CODE>THPConv</CODE></A>
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43<H2>Revision History</H2>
44<P>03/01/2006 Initial version.</P>
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