message: WDRC_Plotter: simplify page
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  </script>
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  <body style="font-family:sans-serif;">
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  - <td><div id="curve_chart" style="width: 600px; height: 500px"></div></td>
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  <tr><td><label for="exp_cr"><font color="blue"><b>Expansion:</b></font> Ratio (<i>exp_cr</i>)</label></td></tr>
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  <tr><td><input id="recompute" type="button" value="Recompute" onclick="drawChart();"/></td></tr>
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  <H2>WDRC Input-Output Calculator</H2>
  <p>This page illustrates how the WDRC settings change the input-output behavior of the WDRC algorithm.</p>
  <p>The WDRC calculations shown here are taken from <a href="https://github.com/Tympan/Tympan_Library/blob/master/src/AudioCalcGainWDRC_F32.h">AudioCalcGainWDRC_F32.h</a>, which is part of the <a href="https://github.com/Tympan/Tympan_Library">Tympan_Library</a> for Arduino.</p>
  