147 lines
5.6 KiB
HTML
147 lines
5.6 KiB
HTML
|
|
||
|
|
<!doctype HTML public "-//W3C//DTD HTML 4.0 Frameset//EN">
|
||
|
|
<html>
|
||
|
|
<head>
|
||
|
|
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
|
||
|
|
|
||
|
|
<meta name="generator" content="Adobe RoboHelp 9">
|
||
|
|
<title>Compressor</title>
|
||
|
|
<!--[if lt IE 5.5000]><style type="text/css">@import "/wiki/skins/monobook/IE50Fixes.css";</style><![endif]-->
|
||
|
|
<!--[if IE 5.5000]><style type="text/css">@import "/wiki/skins/monobook/IE55Fixes.css";</style><![endif]-->
|
||
|
|
<!--[if IE 6]><style type="text/css">@import "/wiki/skins/monobook/IE60Fixes.css";</style><![endif]-->
|
||
|
|
<!--[if IE 7]><style type="text/css">@import "/wiki/skins/monobook/IE70Fixes.css?1";</style><![endif]-->
|
||
|
|
<!--[if lt IE 7]><script type="text/javascript" src="/wiki/skins/common/IEFixes.js"></script>
|
||
|
|
<meta http-equiv="imagetoolbar" content="no" /><![endif]-->
|
||
|
|
<!-- Head Scripts -->
|
||
|
|
<link rel="stylesheet" href="HtmlHelp.css" type="text/css">
|
||
|
|
|
||
|
|
<style title="hcp" type="text/css">
|
||
|
|
<!--
|
||
|
|
span.hcp1 { font-style:italic; }
|
||
|
|
span.hcp2 { font-weight:bold; }
|
||
|
|
-->
|
||
|
|
</style>
|
||
|
|
</head>
|
||
|
|
|
||
|
|
<body class="ns-0 ltr">
|
||
|
|
<div id="globalWrapper">
|
||
|
|
<div id="column-content">
|
||
|
|
<div id="content">
|
||
|
|
<h1 class="firstHeading">Compressor</h1>
|
||
|
|
<div id="bodyContent">
|
||
|
|
<p id="siteSub"><img src="Compressor.JPG" alt="" border="0"></p>
|
||
|
|
<p>A fully featured compressor with the classic BSS 'progressive
|
||
|
|
knee' sound, which produces a gentle ratio near the threshold
|
||
|
|
becoming progressively more aggressive further into compression.
|
||
|
|
An auto-release mode not only allows the release time
|
||
|
|
to be related to the user-set attack time, but also varies
|
||
|
|
this relationship depending on the nature of the program
|
||
|
|
to give a very natural sounding result. Two versions of
|
||
|
|
the compressor are available, a single channel version,
|
||
|
|
and a stereo version, where two independent audio channels
|
||
|
|
are controlled by a single control panel, the side chains
|
||
|
|
being locked together to prevent stereo image shifts.</p>
|
||
|
|
<p> </p>
|
||
|
|
<h2>Inputs and Outputs</h2>
|
||
|
|
<p>The single channel compressor has one audio input and
|
||
|
|
one audio output.</p>
|
||
|
|
<p>The stereo compressor is identical to the single channel
|
||
|
|
version except that it has 2 inputs and 2 outputs. Adjustment
|
||
|
|
of controls has the same effect on both channels.</p>
|
||
|
|
<br>
|
||
|
|
|
||
|
|
<div class="editsection" style="float: right; margin-left: 5px;">
|
||
|
|
<p> </p>
|
||
|
|
<h2>Properties</h2>
|
||
|
|
<p> </p>
|
||
|
|
<h5>Side chain</h5>
|
||
|
|
<p>A side chain input can be made available so that
|
||
|
|
an equaliser for example can be introduced to make
|
||
|
|
compression frequency conscious. Any side chain processing
|
||
|
|
would normally derive its signal from the same source
|
||
|
|
that is fed to the audio input of the compressor.</p>
|
||
|
|
<p> </p>
|
||
|
|
<h2>Control Panel</h2>
|
||
|
|
<p><img src="Compressorcp.JPG" alt="image:Compressorcp.JPG" title="image:Compressorcp.JPG" style="border-width: 2px;
|
||
|
|
border-style: solid; margin-top: 0px; margin-bottom: 0px;
|
||
|
|
margin-left: 0px; margin-right: 0px;" width="670" height="260" border="2"></p>
|
||
|
|
<p> </p>
|
||
|
|
<p> </p>
|
||
|
|
<h4>Threshold control</h4>
|
||
|
|
<ul>
|
||
|
|
<li class="p"><p>Adjusts the level threshold above
|
||
|
|
which compression will take place. Below this
|
||
|
|
threshold, no compression will take place.</p></li>
|
||
|
|
</ul>
|
||
|
|
<p> </p>
|
||
|
|
<h4>Ratio control</h4>
|
||
|
|
<ul>
|
||
|
|
<li class="p"><p>Adjusts the aggressiveness of
|
||
|
|
compression.</p></li>
|
||
|
|
</ul>
|
||
|
|
<p> </p>
|
||
|
|
<h4>Gain control</h4>
|
||
|
|
<ul>
|
||
|
|
<li class="p"><p>Adjusts out any <a href="Gain.html">gain</a>
|
||
|
|
anomalies.</p></li>
|
||
|
|
</ul>
|
||
|
|
<p> </p>
|
||
|
|
<h4>Attack control</h4>
|
||
|
|
<ul>
|
||
|
|
<li class="p"><p>Adjusts the time it takes for
|
||
|
|
the compressor to respond to signal levels above
|
||
|
|
the threshold.</p></li>
|
||
|
|
</ul>
|
||
|
|
<p><span class="hcp1">Note that this
|
||
|
|
control also affects the release time in 'Auto Release'
|
||
|
|
mode.</span></p>
|
||
|
|
<p> </p>
|
||
|
|
<h4>Release control</h4>
|
||
|
|
<ul>
|
||
|
|
<li class="p"><p>Adjusts the time it takes for
|
||
|
|
the compressor to recover after the signal level
|
||
|
|
goes below threshold.</p></li>
|
||
|
|
</ul>
|
||
|
|
<p><span class="hcp1">Note that this
|
||
|
|
control has no effect in 'Auto Release' mode.</span></p>
|
||
|
|
<p> </p>
|
||
|
|
<h4>Bypass button</h4>
|
||
|
|
<ul>
|
||
|
|
<li class="p"><p>Removes the compressor from the
|
||
|
|
signal path.</p></li>
|
||
|
|
</ul>
|
||
|
|
<p> </p>
|
||
|
|
<h4>Auto Release button</h4>
|
||
|
|
<ul>
|
||
|
|
<li class="p"><p>Automatically adjusts the release
|
||
|
|
time optimally for the programme material.</p></li>
|
||
|
|
</ul>
|
||
|
|
<p><span class="hcp1">Note that the
|
||
|
|
time constants are still dependent on the attack setting.</span></p>
|
||
|
|
<p> </p>
|
||
|
|
<h4>Gain Reduction meter</h4>
|
||
|
|
<ul>
|
||
|
|
<li class="p"><p>Displays the amount of gain reduction
|
||
|
|
being applied.</p></li>
|
||
|
|
</ul>
|
||
|
|
<p> </p>
|
||
|
|
<p> </p>
|
||
|
|
<h2>Notes</h2>
|
||
|
|
<p><span class="hcp2">!</span> This object
|
||
|
|
will cause audible distortion if the Attack and Release
|
||
|
|
times are too fast since it will be trying to apply
|
||
|
|
dynamic gain reduction to the instantaneous values
|
||
|
|
of lower frequency waveforms.</p>
|
||
|
|
<p><span class="hcp2">!</span> This object
|
||
|
|
is capable of raising signal levels beyond the clipping
|
||
|
|
point so; care should be exercised when using positive
|
||
|
|
gain values.</p>
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
<p style="margin-bottom: 0;"> </p>
|
||
|
|
</body>
|
||
|
|
</html>
|