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<h2>
<span class="refentrytitle">port</span>
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<p>port —
Applies portamento to a step-valued control signal.
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<div class="refsect1" title="Description">
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<h2>Description</h2>
<p>
Applies portamento to a step-valued control signal.
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<div class="refsect1" title="Syntax">
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<h2>Syntax</h2>
<pre class="synopsis">kres <span class="command"><strong>port</strong></span> ksig, ihtim [, isig]</pre>
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<h2>Initialization</h2>
<p>
<span class="emphasis"><em>ihtim</em></span> -- half-time of the function, in seconds.
</p>
<p>
<span class="emphasis"><em>isig</em></span>
(optional, default=0) -- initial (i.e. previous) value for
internal feedback. The default value is 0. Negative value will
cause initialization to be skipped and last value from previous instance to be used
as initial value for note.
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<div class="refsect1" title="Performance">
<a id="id3109675"></a>
<h2>Performance</h2>
<p>
<span class="emphasis"><em>kres</em></span> -- the output signal at control-rate.
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<p>
<span class="emphasis"><em>ksig</em></span> -- the input signal at control-rate.
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<p>
<span class="emphasis"><em>port</em></span> applies portamento to a step-valued control signal. At each new step value, <span class="emphasis"><em>ksig</em></span> is low-pass filtered to move towards that value at a rate determined by <span class="emphasis"><em>ihtim</em></span>. <span class="emphasis"><em>ihtim</em></span> is the <span class="quote">“<span class="quote">half-time</span>”</span> of the function (in seconds), during which the curve will traverse half the distance towards the new value, then half as much again, etc., theoretically never reaching its asymptote. With <a class="link" href="portk.html" title="portk"><em class="citetitle">portk</em></a>, the half-time can be varied at the control rate.
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<div class="refsect1" title="See Also">
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<h2>See Also</h2>
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<a class="link" href="areson.html" title="areson"><em class="citetitle">areson</em></a>,
<a class="link" href="aresonk.html" title="aresonk"><em class="citetitle">aresonk</em></a>,
<a class="link" href="atone.html" title="atone"><em class="citetitle">atone</em></a>,
<a class="link" href="atonek.html" title="atonek"><em class="citetitle">atonek</em></a>,
<a class="link" href="portk.html" title="portk"><em class="citetitle">portk</em></a>,
<a class="link" href="reson.html" title="reson"><em class="citetitle">reson</em></a>,
<a class="link" href="resonk.html" title="resonk"><em class="citetitle">resonk</em></a>,
<a class="link" href="tone.html" title="tone"><em class="citetitle">tone</em></a>,
<a class="link" href="tonek.html" title="tonek"><em class="citetitle">tonek</em></a>
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