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<div class="refentry" title="jspline">
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<h2>
<span class="refentrytitle">jspline</span>
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<p>jspline —
A jitter-spline generator.
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<div class="refsect1" title="Description">
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<h2>Description</h2>
<p>
A jitter-spline generator.
</p>
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<div class="refsect1" title="Syntax">
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<h2>Syntax</h2>
<pre class="synopsis">ares <span class="command"><strong>jspline</strong></span> xamp, kcpsMin, kcpsMax</pre>
<pre class="synopsis">kres <span class="command"><strong>jspline</strong></span> kamp, kcpsMin, kcpsMax</pre>
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<div class="refsect1" title="Performance">
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<h2>Performance</h2>
<p>
<span class="emphasis"><em>kres, ares</em></span> -- Output signal
</p>
<p>
<span class="emphasis"><em>xamp</em></span> -- Amplitude factor
</p>
<p>
<span class="emphasis"><em>kcpsMin, kcpsMax</em></span> -- Range of point-generation rate. Min and max limits are expressed in cps.
</p>
<p>
<span class="emphasis"><em>jspline</em></span> (jitter-spline generator) generates a smooth curve based on random points generated at [<span class="emphasis"><em>cpsMin</em></span>, <span class="emphasis"><em>cpsMax</em></span>] rate. This opcode is similar to <a class="link" href="randomi.html" title="randomi"><em class="citetitle">randomi</em></a> or <a class="link" href="randi.html" title="randi"><em class="citetitle">randi</em></a> or <a class="link" href="jitter.html" title="jitter"><em class="citetitle">jitter</em></a>, but segments are not straight lines, but cubic spline curves. Output value range is approximately > -<span class="emphasis"><em>xamp</em></span> and < <span class="emphasis"><em>xamp</em></span>. Actually, real range could be a bit greater, because of interpolating curves beetween each pair of random-points.
</p>
<p>
At present time generated curves are quite smooth when <span class="emphasis"><em>cpsMin</em></span> is not too different from <span class="emphasis"><em>cpsMax</em></span>. When <span class="emphasis"><em>cpsMin</em></span>-<span class="emphasis"><em>cpsMax</em></span> interval is big, some little discontinuity could occurr, but it should not be a problem, in most cases. Maybe the algorithm will be improved in next versions.
</p>
<p>
These opcodes are often better than <a class="link" href="jitter.html" title="jitter"><em class="citetitle">jitter</em></a> when user wants to <span class="quote">“<span class="quote">naturalize</span>”</span> or <span class="quote">“<span class="quote">analogize</span>”</span> digital sounds. They could be used also in algorithmic composition, to generate smooth random melodic lines when used together with <a class="link" href="samphold.html" title="samphold"><em class="citetitle">samphold</em></a> opcode.
</p>
<p>
Note that the result is quite different from the one obtained by filtering white noise, and they allow the user to obtain a much more precise control.
</p>
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<div class="refsect1" title="Credits">
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<h2>Credits</h2>
<p>Author: Gabriel Maldonado</p>
<p>New in Version 4.15</p>
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