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<h2>
<span class="refentrytitle">GEN52</span>
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<p>GEN52 —
Creates an interleaved multichannel table from the specified
source tables, in the format expected by the <span class="emphasis"><em>ftconv</em></span> opcode.
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<div class="refsect1" title="Description">
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<h2>Description</h2>
<p>
GEN52 creates an interleaved multichannel table from the specified
source tables, in the format expected by the <a class="link" href="ftconv.html" title="ftconv"><em class="citetitle">ftconv</em></a> opcode.
It can also be used to extract a channel from a multichannel table
and store it in a normal mono table, copy tables with skipping some
samples, adding delay, or store in reverse order, etc.
</p>
<p>
Three parameters must be given for each channel to be processed. <span class="emphasis"><em>fsrc</em></span> declares the source f-table number. The parameter <span class="emphasis"><em>offset</em></span> specifies an offset for the source file. If different to 0, the source file is not read from the beginning, but the <span class="emphasis"><em>offset</em></span> number of values are skipped. The <span class="emphasis"><em>offset</em></span> is used to determine the channel number to be read from interleaved f-tables, e.g. for channel 2, <span class="emphasis"><em>offset</em></span> must be 1. It can also be used to set a read offset on the source table. This parameter gives absolute values, so if a skip of 20 sample frames for a 2 channel f-table is desired, <span class="emphasis"><em>offset</em></span> must be set to 40. The <span class="emphasis"><em>srcchnls</em></span> parameter is used to declare the number of channels in the source f-table. This parameter sets the skip size when reading the source f-table.
</p>
<p>
When more than one channel (<span class="emphasis"><em>nchannels</em></span> > 1) is given, source f-tables are interleaved in the newly created table.
</p>
<p>
If the source f-table is finished before the destination f-table is full, the remaining values are set to 0.
</p>
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<div class="refsect1" title="Syntax">
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<h2>Syntax</h2>
<pre class="synopsis"><span class="command"><strong>f</strong></span> # time size 52 nchannels fsrc1 offset1 srcchnls1 [fsrc2 offset2 srcchnls2 ... fsrcN offsetN srcchnlsN]</pre>
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<div class="refsect1" title="Example">
<a id="id3750158"></a>
<h2>Example</h2>
<pre class="programlisting">
<span class="comment">; source tables</span>
<span class="stamnt">f</span> 1 0 16384 10 1
<span class="stamnt">f</span> 2 0 16384 10 0 1
<span class="comment">; create 2 channel interleaved table</span>
<span class="stamnt">f</span> 3 0 32768 -52 2 1 0 1 2 0 1
<span class="comment">; extract first channel from table 3</span>
<span class="stamnt">f</span> 4 0 16384 -52 1 3 0 2
<span class="comment">; extract second channel from table 3</span>
<span class="stamnt">f</span> 5 0 16384 -52 1 3 1 2</pre>
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<div class="refsect1" title="Credits">
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<h2>Credits</h2>
<p>Author: Istvan Varga</p>
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