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<h2>
<span class="refentrytitle">specaddm</span>
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<p>specaddm —
Perform a weighted add of two input spectra.
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<div class="refsect1" title="Description">
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<h2>Description</h2>
<p>
Perform a weighted add of two input spectra.
</p>
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<div class="refsect1" title="Syntax">
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<h2>Syntax</h2>
<pre class="synopsis">wsig <span class="command"><strong>specaddm</strong></span> wsig1, wsig2 [, imul2]</pre>
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<div class="refsect1" title="Initialization">
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<h2>Initialization</h2>
<p>
<span class="emphasis"><em>imul2</em></span> (optional, default=0) -- if non-zero, scale the <span class="emphasis"><em>wsig2</em></span> magnitudes before adding. The default value is 0.
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<div class="refsect1" title="Performance">
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<h2>Performance</h2>
<p>
<span class="emphasis"><em>wsig1</em></span> -- the first input spectra.
</p>
<p>
<span class="emphasis"><em>wsig2</em></span> -- the second input spectra.
</p>
<p>
Do a weighted add of two input spectra. For each channel of the two input spectra, the two magnitudes are combined and written to the output according to:
</p>
<div class="literallayout">
<p><br />
magout = mag1in + mag2in * imul2<br />
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<p>
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<p>
The operation is performed whenever the input <span class="emphasis"><em>wsig1</em></span> is sensed to be new. This unit will (at Initialization) verify the consistency of the two spectra (equal size, equal period, equal mag types).
</p>
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<h2>Examples</h2>
<p>
</p>
<div class="informalexample">
<pre class="programlisting">
wsig2 <span class="emphasis"><em>specdiff</em></span> wsig1 ; sense onsets
wsig3 <span class="emphasis"><em>specfilt</em></span> wsig2, 2 ; absorb slowly
<span class="emphasis"><em>specdisp</em></span> wsig2, .1 ; & display both spectra
<span class="emphasis"><em>specdisp</em></span> wsig3, .1
</pre>
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<div class="refsect1" title="See Also">
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<h2>See Also</h2>
<p>
<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>,
<a class="link" href="specscal.html" title="specscal"><em class="citetitle">specscal</em></a>
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