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function plotCQT(Xcqt,fs,fcomp,method)
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      <pre>%plotCQT(Xcqt,fs,fcomp,method) plots the magnitudes of the CQT 
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      <pre>%coefficients similar to a spectrogram using linear interpolation 
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      <pre>%between the calculated coefficients. For better illustration, the
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      <pre>%magnitude values can be compressed using fcomp &lt; 1 (Xmag^fcomp).
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      <pre>%For generating the figure &#x27;method&#x27; can be set to &#x27;surf&#x27; and
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      <pre>%&#x27;image&#x27;, respectively, whereas using &#x27;surf&#x27; the axis are properly labeled, 
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      <pre>%however &#x27;image&#x27; is faster leaving all axis unlabeled (default: &#x27;surf&#x27;).
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      <pre>%
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      <pre>%Christian Sch?rkhuber, Anssi Klapuri 2010-06
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      <pre>
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      <pre>if Xcqt.intParams.rast == 0
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      <pre>    absCQT = getCQT(Xcqt,&#x27;all&#x27;,&#x27;all&#x27;,&#x27;linear&#x27;);
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      <pre>else
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      <pre>    absCQT = abs(Xcqt.spCQT);
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      <pre>end