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<?xml version="1.0"?>
<!DOCTYPE ladspa SYSTEM "ladspa-swh.dtd">
<?xml-stylesheet href="ladspa.css" type="text/css"?>
<ladspa>
<global>
<meta name="maker" value="Steve Harris <steve@plugin.org.uk>"/>
<meta name="copyright" value="GPL"/>
<meta name="properties" value="HARD_RT_CAPABLE"/>
</global>
<plugin label="dcRemove" id="1207" class="HighpassPlugin,UtilityPlugin">
<name>DC Offset Remover</name>
<p>Simply removes the DC (0 Hz) component from an audio signal, uses a high pass filter, so has some side effects, but they should be minimal.</p>
<callback event="activate"><![CDATA[
itm1 = 0.0f;
otm1 = 0.0f;
]]></callback>
<callback event="run"><![CDATA[
unsigned long pos;
for (pos = 0; pos < sample_count; pos++) {
otm1 = 0.999f * otm1 + input[pos] - itm1;
itm1 = input[pos];
output[pos] = otm1;
}
plugin_data->itm1 = itm1;
plugin_data->otm1 = otm1;
]]></callback>
<port label="input" dir="input" type="audio">
<name>Input</name>
</port>
<port label="output" dir="output" type="audio">
<name>Output</name>
</port>
<instance-data label="itm1" type="LADSPA_Data"/>
<instance-data label="otm1" type="LADSPA_Data"/>
</plugin>
</ladspa>
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