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<h2>
<span class="refentrytitle">trcross</span>
</h2>
<p>trcross —
Streaming partial track cross-synthesis.
</p>
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<div class="refsect1" title="Description">
<a id="id3299823"></a>
<h2>Description</h2>
<p>
The trcross opcode takes two inputs containg TRACKS pv streaming signals (as generated,
for instance by partials) and cross-synthesises them into a single TRACKS stream. Two
different modes of operation are used: mode 0, cross-synthesis by multiplication of
the amplitudes of the two inputs and mode 1, cross-synthesis by the substititution of
the amplitudes of input 1 by the input 2. Frequencies and phases of input 1 are preserved
in the output. The cross-synthesis is done by matching tracks between the two inputs using
a 'search interval'. The matching algorithm will look for tracks in the second input that
are within the search interval around each track in the first input. This interval can be changed
at the control rate. Wider search intervals will find more matches.
</p>
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<div class="refsect1" title="Syntax">
<a id="id3300754"></a>
<h2>Syntax</h2>
<pre class="synopsis">fsig <span class="command"><strong>trcross</strong></span> fin1, fin2, ksearch,kdepth[,kmode] </pre>
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<div class="refsect1" title="Performance">
<a id="id3300773"></a>
<h2>Performance</h2>
<p>
<span class="emphasis"><em>fsig</em></span> -- output pv stream in TRACKS format
</p>
<p>
<span class="emphasis"><em>fin1</em></span> -- first input pv stream in TRACKS format.
</p>
<p>
<span class="emphasis"><em>fin2</em></span> -- second input pv stream in TRACKS format
</p>
<p>
<span class="emphasis"><em>ksearch</em></span> -- search interval ratio, defining a 'search area'
around each track of 1st input for matching purposes.
</p>
<p>
<span class="emphasis"><em>kdepth</em></span> -- depth of effect (0-1).
</p>
<p>
<span class="emphasis"><em>kmode</em></span> -- mode of cross-synthesis. 0, multiplication
of amplitudes (filtering), 1, subsitution of amplitudes of input 1 by
input 2 (akin to vocoding). Defaults to 0.
</p>
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<div class="refsect1" title="Examples">
<a id="id3300829"></a>
<h2>Examples</h2>
<p>
</p>
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<a id="id3300837"></a>
<p class="title">
<b>Example 632. Example</b>
</p>
<div class="example-contents">
<pre class="programlisting">
ain inch 1 ; input signals
ain inch 2
fs1,fsi2 pvsifd ain,2048,512,1 ; ifd analysis
fst partials fs1,fsi2,.003,1,3,500 ; partial tracking
fs11,fsi12 pvsifd ain,2048,512,1 ; ifd analysis (second input)
fst1 partials fs11,fsi12,.003,1,3,500 ; partial tracking \(second input
fcr trcross fst,fst1, 1.05, 1 ; cross-synthesis (mode 0)
aout tradsyn fcr, 1, 1, 500, 1 ; resynthesis of tracks
out aout
</pre>
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</div>
<p><br class="example-break" />
</p>
<p>
The example above shows partial tracking of two ifd-analysis signals, cross-synthesis,
followed by the remix of the two parts of the spectrum and resynthesis.
</p>
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<div class="refsect1" title="Credits">
<a id="id3300865"></a>
<h2>Credits</h2>
<p>
</p>
<table border="0" summary="Simple list" class="simplelist">
<tr>
<td>Author: Victor Lazzarini</td>
</tr>
<tr>
<td>February 2006 </td>
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<p>New in Csound5.01</p>
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