147 lines
5.5 KiB
HTML
147 lines
5.5 KiB
HTML
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<!doctype HTML public "-//W3C//DTD HTML 4.0 Frameset//EN">
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
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<meta name="generator" content="Adobe RoboHelp 9">
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<title>Expander</title>
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<!--[if lt IE 5.5000]><style type="text/css">@import "/wiki/skins/monobook/IE50Fixes.css";</style><![endif]-->
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<!--[if IE 5.5000]><style type="text/css">@import "/wiki/skins/monobook/IE55Fixes.css";</style><![endif]-->
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<!--[if IE 6]><style type="text/css">@import "/wiki/skins/monobook/IE60Fixes.css";</style><![endif]-->
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<!--[if IE 7]><style type="text/css">@import "/wiki/skins/monobook/IE70Fixes.css?1";</style><![endif]-->
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<!--[if lt IE 7]><script type="text/javascript" src="/wiki/skins/common/IEFixes.js"></script>
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<meta http-equiv="imagetoolbar" content="no" /><![endif]-->
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<!-- Head Scripts -->
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<link rel="stylesheet" href="HtmlHelp.css" type="text/css">
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</head>
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<body class="ns-0 ltr">
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<div id="globalWrapper">
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<div id="column-content">
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<div id="content">
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<p><a name="top" id="top"></a></p>
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<h1 class="firstHeading">Expander</h1>
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<div id="bodyContent">
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<p id="siteSub"><img src="Expander.JPG" alt="" border="0"></p>
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<p> <br>
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Reduces the level of signals that fall below a threshold
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level.</p>
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<div class="editsection" style="float: right; margin-left: 5px;">
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<p> </p>
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</div>
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<p><a name="Inputs_and_Outputs" id="Inputs_and_Outputs"></a></p>
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<h2>Inputs and Outputs</h2>
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<p>The single channel expander has one audio input and
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one audio output.</p>
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<p>The stereo expander is identical to the single channel
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version except that it has 2 inputs and 2 outputs. Adjustment
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of controls has the same effect on both channels.</p>
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<div class="editsection" style="float: right; margin-left: 5px;">
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<p> </p>
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</div>
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<p><a name="Properties" id="Properties"></a></p>
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<h2>Properties</h2>
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<div class="editsection" style="float: right; margin-left: 5px;">
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<p> </p>
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</div>
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<p><a name="Side_chain" id="Side_chain"></a></p>
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<h4>Side chain</h4>
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<p>A side chain input can be made available so that an
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<a href="MAINGraphic_Equaliser.htm">equaliser</a> (for
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example) can be introduced to make expansion frequency
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conscious. Any side chain processing would normally derive
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its signal from the same source that is fed to the audio
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input of the expander.</p>
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<div class="editsection" style="float: right; margin-left: 5px;">
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<p> </p>
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</div>
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<p><a name="Control_Panel" id="Control_Panel"></a></p>
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<h2>Control Panel</h2>
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<p><img src="Expandercp.JPG" alt="image:expandercp.JPG" title="image:expandercp.JPG" style="border-width: 2px;
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border-style: solid; margin-top: 0px; margin-bottom: 0px;
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margin-left: 0px; margin-right: 0px;" width="384" height="264" border="2"></p>
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<div class="editsection" style="float: right; margin-left: 5px;">
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<p> </p>
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</div>
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<p><a name="Threshold_control" id="Threshold_control"></a></p>
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<h4>Threshold control</h4>
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<ul>
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<li class="p"><p>Adjusts the level threshold below
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which gain reduction will take place. Above this threshold
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no gain reduction will take place.</p></li>
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</ul>
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<p> </p>
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<div class="editsection" style="float: right; margin-left: 5px;">
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<p> </p>
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</div>
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<p><a name="Ratio_control" id="Ratio_control"></a></p>
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<h4>Ratio control</h4>
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<ul>
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<li class="p"><p>Adjusts the aggressiveness of expansion.</p></li>
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</ul>
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<div class="editsection" style="float: right; margin-left: 5px;">
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<p> </p>
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</div>
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<p><a name="Attack_control" id="Attack_control"></a></p>
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<h4>Attack control</h4>
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<ul>
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<li class="p"><p>Adjusts the time it takes for the
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expander to recover after the signal level goes above
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threshold.</p></li>
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</ul>
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<div class="editsection" style="float: right; margin-left: 5px;">
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<p> </p>
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</div>
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<p><a name="Release_control" id="Release_control"></a></p>
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<h4>Release control</h4>
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<ul>
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<li class="p"><p>Adjusts the time it takes for the
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expander to respond to signal levels which fall below
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the threshold.</p></li>
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</ul>
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<div class="editsection" style="float: right; margin-left: 5px;">
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<p> </p>
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</div>
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<p><a name="Bypass_button" id="Bypass_button"></a></p>
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<h4>Bypass button</h4>
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<ul>
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<li class="p"><p>Removes the expander from the signal
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path.</p></li>
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</ul>
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<div class="editsection" style="float: right; margin-left: 5px;">
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<p> </p>
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</div>
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<p><a name="Gain_Reduction_meter" id="Gain_Reduction_meter"></a></p>
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<h4>Gain Reduction meter</h4>
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<ul>
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<li class="p"><p>Displays the amount of gain reduction
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being applied.</p></li>
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</ul>
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<p> </p>
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<div class="editsection" style="float: right; margin-left: 5px;">
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<p> </p>
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</div>
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<p><a name="Notes" id="Notes"></a></p>
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<h2>Notes</h2>
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<p><span style="font-weight: bold;">!</span> The expander
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can cause distortion at low frequencies when the Release
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control is set to low values. Unless you particularly
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need the expander to attenuate very quickly when the signal
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falls below threshold, set the Release control to a reasonably
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high value.</p>
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</div>
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</div>
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</div>
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</div>
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<p style="margin-bottom: 0;"> </p>
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</body>
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</html>
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