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<h2>
<span class="refentrytitle">specscal</span>
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<p>specscal —
Scales an input spectral datablock with spectral envelopes.
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<a id="idm281472886272184"></a>
<h2>Description</h2>
<p>
Scales an input spectral datablock with spectral envelopes.
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<h2>Syntax</h2>
<pre class="synopsis">wsig <span class="command"><strong>specscal</strong></span> wsigin, ifscale, ifthresh</pre>
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<h2>Initialization</h2>
<p>
<span class="emphasis"><em>ifscale</em></span> -- scale function table. A function table containing values by which a value's magnitude is rescaled.
</p>
<p>
<span class="emphasis"><em>ifthresh</em></span> -- threshold function table. If <span class="emphasis"><em>ifthresh</em></span> is non-zero, each magnitude is reduced by its corresponding table-value (to not less than zero)
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<h2>Performance</h2>
<p>
<span class="emphasis"><em>wsig</em></span> -- the output spectrum
</p>
<p>
<span class="emphasis"><em>wsigin</em></span> -- the input spectra
</p>
<p>
Scales an input spectral datablock with spectral envelopes. Function tables <span class="emphasis"><em>ifthresh</em></span> and <span class="emphasis"><em>ifscale</em></span> are initially sampled across the (logarithmic) frequency space of the input spectrum; then each time a new input spectrum is sensed the sampled values are used to scale each of its magnitude channels as follows: if <span class="emphasis"><em>ifthresh</em></span> is non-zero, each magnitude is reduced by its corresponding table-value (to not less than zero); then each magnitude is rescaled by the corresponding <span class="emphasis"><em>ifscale</em></span> value, and the resulting spectrum written to <span class="emphasis"><em>wsig</em></span>.
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<h2>Examples</h2>
<p>
</p>
<div class="informalexample">
<pre class="programlisting">
wsig2 <span class="opc">specdiff</span> wsig1 <span class="comment">; sense onsets</span>
wsig3 <span class="opc">specfilt</span> wsig2, 2 <span class="comment">; absorb slowly</span>
<span class="opc">specdisp</span> wsig2, 0.1 <span class="comment">; & display both spectra</span>
<span class="opc">specdisp</span> wsig3, 0.1</pre>
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<a id="idm281472886210360"></a>
<h2>See Also</h2>
<p>
<a class="link" href="specaddm.html" title="specaddm"><em class="citetitle">specaddm</em></a>,
<a class="link" href="specdiff.html" title="specdiff"><em class="citetitle">specdiff</em></a>,
<a class="link" href="specfilt.html" title="specfilt"><em class="citetitle">specfilt</em></a>,
<a class="link" href="spechist.html" title="spechist"><em class="citetitle">spechist</em></a>
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