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<title>equalizer-3bands: GStreamer Good Plugins 1.0 Plugins Reference Manual</title>
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<div class="refentry">
<a name="gst-plugins-good-plugins-equalizer-3bands"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="gst-plugins-good-plugins-equalizer-3bands.top_of_page"></a>equalizer-3bands</span></h2>
<p>equalizer-3bands</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-equalizer-3bands.properties"></a><h2>Properties</h2>
<div class="informaltable"><table class="informaltable" border="0">
<colgroup>
<col width="150px" class="properties_type">
<col width="300px" class="properties_name">
<col width="200px" class="properties_flags">
</colgroup>
<tbody>
<tr>
<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-good-plugins-equalizer-3bands.html#GstIirEqualizer3Bands--band0" title="The “band0” property">band0</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-good-plugins-equalizer-3bands.html#GstIirEqualizer3Bands--band1" title="The “band1” property">band1</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-good-plugins-equalizer-3bands.html#GstIirEqualizer3Bands--band2" title="The “band2” property">band2</a></td>
<td class="property_flags">Read / Write</td>
</tr>
</tbody>
</table></div>
</div>
<a name="GstIirEqualizer3Bands"></a><div class="refsect1">
<a name="gst-plugins-good-plugins-equalizer-3bands.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody><tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="gst-plugins-good-plugins-equalizer-3bands.html#GstIirEqualizer3Bands-struct" title="struct GstIirEqualizer3Bands">GstIirEqualizer3Bands</a></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-equalizer-3bands.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen"> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject-struct">GObject</a>
<span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a>
<span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstObject.html#GstObject-struct">GstObject</a>
<span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstElement.html#GstElement-struct">GstElement</a>
<span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-libs-1.0/GstBaseTransform.html#GstBaseTransform-struct">GstBaseTransform</a>
<span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gst-plugins-base-libs-1.0/GstAudioFilter.html#GstAudioFilter-struct">GstAudioFilter</a>
<span class="lineart">╰──</span> <a class="link" href="gst-plugins-good-plugins-iirequalizer.html#GstIirEqualizer">GstIirEqualizer</a>
<span class="lineart">╰──</span> GstIirEqualizer3Bands
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-equalizer-3bands.implemented-interfaces"></a><h2>Implemented Interfaces</h2>
<p>
GstIirEqualizer3Bands implements
<a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstChildProxy.html#GstChildProxy-struct">GstChildProxy</a> and <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstPreset.html#GstPreset-struct">GstPreset</a>.</p>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-equalizer-3bands.description"></a><h2>Description</h2>
<p>The 3-band equalizer element allows to change the gain of a low frequency,
medium frequency and high frequency band.</p>
<div class="refsect2">
<a name="id-1.2.54.8.3"></a><h3>Example launch line</h3>
<div class="informalexample">
<table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
<tbody>
<tr>
<td class="listing_lines" align="right"><pre>1</pre></td>
<td class="listing_code"><pre class="programlisting">gst<span class="gtkdoc opt">-</span>launch<span class="gtkdoc opt">-</span><span class="number">1.0</span> filesrc location<span class="gtkdoc opt">=</span>song<span class="gtkdoc opt">.</span>ogg <span class="gtkdoc opt">!</span> oggdemux <span class="gtkdoc opt">!</span> vorbisdec <span class="gtkdoc opt">!</span> audioconvert <span class="gtkdoc opt">!</span> equalizer<span class="gtkdoc opt">-</span><span class="number">3</span>bands band1<span class="gtkdoc opt">=</span><span class="number">6.0</span> <span class="gtkdoc opt">!</span> alsasink</pre></td>
</tr>
</tbody>
</table>
</div>
This raises the volume of the 2nd band, which is at 1110 Hz, by 6 db.
</div>
<div class="refsynopsisdiv">
<h2>Synopsis</h2>
<div class="refsect2">
<a name="id-1.2.54.8.4.1"></a><h3>Element Information</h3>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term">plugin</span></p></td>
<td>
<a class="link" href="gst-plugins-good-plugins-plugin-equalizer.html#plugin-equalizer">equalizer</a>
</td>
</tr>
<tr>
<td><p><span class="term">author</span></p></td>
<td>Stefan Kost <ensonic@users.sf.net></td>
</tr>
<tr>
<td><p><span class="term">class</span></p></td>
<td>Filter/Effect/Audio</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="id-1.2.54.8.4.2"></a><h3>Element Pads</h3>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term">name</span></p></td>
<td>sink</td>
</tr>
<tr>
<td><p><span class="term">direction</span></p></td>
<td>sink</td>
</tr>
<tr>
<td><p><span class="term">presence</span></p></td>
<td>always</td>
</tr>
<tr>
<td><p><span class="term">details</span></p></td>
<td>audio/x-raw, format=(string){ S16LE, F32LE, F64LE }, rate=(int)[ 1000, 2147483647 ], channels=(int)[ 1, 2147483647 ], layout=(string)interleaved</td>
</tr>
</tbody>
</table></div>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term">name</span></p></td>
<td>src</td>
</tr>
<tr>
<td><p><span class="term">direction</span></p></td>
<td>source</td>
</tr>
<tr>
<td><p><span class="term">presence</span></p></td>
<td>always</td>
</tr>
<tr>
<td><p><span class="term">details</span></p></td>
<td>audio/x-raw, format=(string){ S16LE, F32LE, F64LE }, rate=(int)[ 1000, 2147483647 ], channels=(int)[ 1, 2147483647 ], layout=(string)interleaved</td>
</tr>
</tbody>
</table></div>
</div>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-equalizer-3bands.functions_details"></a><h2>Functions</h2>
<p></p>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-equalizer-3bands.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GstIirEqualizer3Bands-struct"></a><h3>struct GstIirEqualizer3Bands</h3>
<pre class="programlisting">struct GstIirEqualizer3Bands;</pre>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-equalizer-3bands.property-details"></a><h2>Property Details</h2>
<div class="refsect2">
<a name="GstIirEqualizer3Bands--band0"></a><h3>The <code class="literal">“band0”</code> property</h3>
<pre class="programlisting"> “band0” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a></pre>
<p>gain for the frequency band 100 Hz, ranging from -24.0 to +12.0.</p>
<p>Flags: Read / Write</p>
<p>Allowed values: [-24,12]</p>
<p>Default value: 0</p>
</div>
<hr>
<div class="refsect2">
<a name="GstIirEqualizer3Bands--band1"></a><h3>The <code class="literal">“band1”</code> property</h3>
<pre class="programlisting"> “band1” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a></pre>
<p>gain for the frequency band 1100 Hz, ranging from -24.0 to +12.0.</p>
<p>Flags: Read / Write</p>
<p>Allowed values: [-24,12]</p>
<p>Default value: 0</p>
</div>
<hr>
<div class="refsect2">
<a name="GstIirEqualizer3Bands--band2"></a><h3>The <code class="literal">“band2”</code> property</h3>
<pre class="programlisting"> “band2” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a></pre>
<p>gain for the frequency band 11 kHz, ranging from -24.0 to +12.0.</p>
<p>Flags: Read / Write</p>
<p>Allowed values: [-24,12]</p>
<p>Default value: 0</p>
</div>
</div>
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