1<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 2<html> 3<head> 4<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 5<title>equalizer-3bands: GStreamer Good Plugins 1.0 Plugins Reference Manual</title> 6<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 7<link rel="home" href="index.html" title="GStreamer Good Plugins 1.0 Plugins Reference Manual"> 8<link rel="up" href="ch01.html" title="gst-plugins-good Elements"> 9<link rel="prev" href="gst-plugins-good-plugins-equalizer-10bands.html" title="equalizer-10bands"> 10<link rel="next" href="gst-plugins-good-plugins-equalizer-nbands.html" title="equalizer-nbands"> 11<meta name="generator" content="GTK-Doc V1.28 (XML mode)"> 12<link rel="stylesheet" href="style.css" type="text/css"> 13</head> 14<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 15<table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="5"><tr valign="middle"> 16<td width="100%" align="left" class="shortcuts"> 17<a href="#" class="shortcut">Top</a><span id="nav_description"> <span class="dim">|</span> 18 <a href="#gst-plugins-good-plugins-equalizer-3bands.description" class="shortcut">Description</a></span><span id="nav_hierarchy"> <span class="dim">|</span> 19 <a href="#gst-plugins-good-plugins-equalizer-3bands.object-hierarchy" class="shortcut">Object Hierarchy</a></span><span id="nav_interfaces"> <span class="dim">|</span> 20 <a href="#gst-plugins-good-plugins-equalizer-3bands.implemented-interfaces" class="shortcut">Implemented Interfaces</a></span><span id="nav_properties"> <span class="dim">|</span> 21 <a href="#gst-plugins-good-plugins-equalizer-3bands.properties" class="shortcut">Properties</a></span> 22</td> 23<td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td> 24<td><a accesskey="u" href="ch01.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td> 25<td><a accesskey="p" href="gst-plugins-good-plugins-equalizer-10bands.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td> 26<td><a accesskey="n" href="gst-plugins-good-plugins-equalizer-nbands.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td> 27</tr></table> 28<div class="refentry"> 29<a name="gst-plugins-good-plugins-equalizer-3bands"></a><div class="titlepage"></div> 30<div class="refnamediv"><table width="100%"><tr> 31<td valign="top"> 32<h2><span class="refentrytitle"><a name="gst-plugins-good-plugins-equalizer-3bands.top_of_page"></a>equalizer-3bands</span></h2> 33<p>equalizer-3bands</p> 34</td> 35<td class="gallery_image" valign="top" align="right"></td> 36</tr></table></div> 37<div class="refsect1"> 38<a name="gst-plugins-good-plugins-equalizer-3bands.properties"></a><h2>Properties</h2> 39<div class="informaltable"><table class="informaltable" border="0"> 40<colgroup> 41<col width="150px" class="properties_type"> 42<col width="300px" class="properties_name"> 43<col width="200px" class="properties_flags"> 44</colgroup> 45<tbody> 46<tr> 47<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a></td> 48<td class="property_name"><a class="link" href="gst-plugins-good-plugins-equalizer-3bands.html#GstIirEqualizer3Bands--band0" title="The “band0” property">band0</a></td> 49<td class="property_flags">Read / Write</td> 50</tr> 51<tr> 52<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a></td> 53<td class="property_name"><a class="link" href="gst-plugins-good-plugins-equalizer-3bands.html#GstIirEqualizer3Bands--band1" title="The “band1” property">band1</a></td> 54<td class="property_flags">Read / Write</td> 55</tr> 56<tr> 57<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a></td> 58<td class="property_name"><a class="link" href="gst-plugins-good-plugins-equalizer-3bands.html#GstIirEqualizer3Bands--band2" title="The “band2” property">band2</a></td> 59<td class="property_flags">Read / Write</td> 60</tr> 61</tbody> 62</table></div> 63</div> 64<a name="GstIirEqualizer3Bands"></a><div class="refsect1"> 65<a name="gst-plugins-good-plugins-equalizer-3bands.other"></a><h2>Types and Values</h2> 66<div class="informaltable"><table class="informaltable" width="100%" border="0"> 67<colgroup> 68<col width="150px" class="name"> 69<col class="description"> 70</colgroup> 71<tbody><tr> 72<td class="datatype_keyword">struct</td> 73<td class="function_name"><a class="link" href="gst-plugins-good-plugins-equalizer-3bands.html#GstIirEqualizer3Bands-struct" title="struct GstIirEqualizer3Bands">GstIirEqualizer3Bands</a></td> 74</tr></tbody> 75</table></div> 76</div> 77<div class="refsect1"> 78<a name="gst-plugins-good-plugins-equalizer-3bands.object-hierarchy"></a><h2>Object Hierarchy</h2> 79<pre class="screen"> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject-struct">GObject</a> 80 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a> 81 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstObject.html#GstObject-struct">GstObject</a> 82 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstElement.html#GstElement-struct">GstElement</a> 83 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-libs-1.0/GstBaseTransform.html#GstBaseTransform-struct">GstBaseTransform</a> 84 <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gst-plugins-base-libs-1.0/GstAudioFilter.html#GstAudioFilter-struct">GstAudioFilter</a> 85 <span class="lineart">╰──</span> <a class="link" href="gst-plugins-good-plugins-iirequalizer.html#GstIirEqualizer">GstIirEqualizer</a> 86 <span class="lineart">╰──</span> GstIirEqualizer3Bands 87</pre> 88</div> 89<div class="refsect1"> 90<a name="gst-plugins-good-plugins-equalizer-3bands.implemented-interfaces"></a><h2>Implemented Interfaces</h2> 91<p> 92GstIirEqualizer3Bands implements 93 <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> 94</div> 95<div class="refsect1"> 96<a name="gst-plugins-good-plugins-equalizer-3bands.description"></a><h2>Description</h2> 97<p>The 3-band equalizer element allows to change the gain of a low frequency, 98medium frequency and high frequency band.</p> 99<div class="refsect2"> 100<a name="id-1.2.54.8.3"></a><h3>Example launch line</h3> 101<div class="informalexample"> 102 <table class="listing_frame" border="0" cellpadding="0" cellspacing="0"> 103 <tbody> 104 <tr> 105 <td class="listing_lines" align="right"><pre>1</pre></td> 106 <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> 107 </tr> 108 </tbody> 109 </table> 110</div> 111 This raises the volume of the 2nd band, which is at 1110 Hz, by 6 db. 112</div> 113<div class="refsynopsisdiv"> 114<h2>Synopsis</h2> 115<div class="refsect2"> 116<a name="id-1.2.54.8.4.1"></a><h3>Element Information</h3> 117<div class="variablelist"><table border="0" class="variablelist"> 118<colgroup> 119<col align="left" valign="top"> 120<col> 121</colgroup> 122<tbody> 123<tr> 124<td><p><span class="term">plugin</span></p></td> 125<td> 126 <a class="link" href="gst-plugins-good-plugins-plugin-equalizer.html#plugin-equalizer">equalizer</a> 127 </td> 128</tr> 129<tr> 130<td><p><span class="term">author</span></p></td> 131<td>Stefan Kost <ensonic@users.sf.net></td> 132</tr> 133<tr> 134<td><p><span class="term">class</span></p></td> 135<td>Filter/Effect/Audio</td> 136</tr> 137</tbody> 138</table></div> 139</div> 140<hr> 141<div class="refsect2"> 142<a name="id-1.2.54.8.4.2"></a><h3>Element Pads</h3> 143<div class="variablelist"><table border="0" class="variablelist"> 144<colgroup> 145<col align="left" valign="top"> 146<col> 147</colgroup> 148<tbody> 149<tr> 150<td><p><span class="term">name</span></p></td> 151<td>sink</td> 152</tr> 153<tr> 154<td><p><span class="term">direction</span></p></td> 155<td>sink</td> 156</tr> 157<tr> 158<td><p><span class="term">presence</span></p></td> 159<td>always</td> 160</tr> 161<tr> 162<td><p><span class="term">details</span></p></td> 163<td>audio/x-raw, format=(string){ S16LE, F32LE, F64LE }, rate=(int)[ 1000, 2147483647 ], channels=(int)[ 1, 2147483647 ], layout=(string)interleaved</td> 164</tr> 165</tbody> 166</table></div> 167<div class="variablelist"><table border="0" class="variablelist"> 168<colgroup> 169<col align="left" valign="top"> 170<col> 171</colgroup> 172<tbody> 173<tr> 174<td><p><span class="term">name</span></p></td> 175<td>src</td> 176</tr> 177<tr> 178<td><p><span class="term">direction</span></p></td> 179<td>source</td> 180</tr> 181<tr> 182<td><p><span class="term">presence</span></p></td> 183<td>always</td> 184</tr> 185<tr> 186<td><p><span class="term">details</span></p></td> 187<td>audio/x-raw, format=(string){ S16LE, F32LE, F64LE }, rate=(int)[ 1000, 2147483647 ], channels=(int)[ 1, 2147483647 ], layout=(string)interleaved</td> 188</tr> 189</tbody> 190</table></div> 191</div> 192</div> 193</div> 194<div class="refsect1"> 195<a name="gst-plugins-good-plugins-equalizer-3bands.functions_details"></a><h2>Functions</h2> 196<p></p> 197</div> 198<div class="refsect1"> 199<a name="gst-plugins-good-plugins-equalizer-3bands.other_details"></a><h2>Types and Values</h2> 200<div class="refsect2"> 201<a name="GstIirEqualizer3Bands-struct"></a><h3>struct GstIirEqualizer3Bands</h3> 202<pre class="programlisting">struct GstIirEqualizer3Bands;</pre> 203</div> 204</div> 205<div class="refsect1"> 206<a name="gst-plugins-good-plugins-equalizer-3bands.property-details"></a><h2>Property Details</h2> 207<div class="refsect2"> 208<a name="GstIirEqualizer3Bands--band0"></a><h3>The <code class="literal">“band0”</code> property</h3> 209<pre class="programlisting"> “band0” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a></pre> 210<p>gain for the frequency band 100 Hz, ranging from -24.0 to +12.0.</p> 211<p>Flags: Read / Write</p> 212<p>Allowed values: [-24,12]</p> 213<p>Default value: 0</p> 214</div> 215<hr> 216<div class="refsect2"> 217<a name="GstIirEqualizer3Bands--band1"></a><h3>The <code class="literal">“band1”</code> property</h3> 218<pre class="programlisting"> “band1” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a></pre> 219<p>gain for the frequency band 1100 Hz, ranging from -24.0 to +12.0.</p> 220<p>Flags: Read / Write</p> 221<p>Allowed values: [-24,12]</p> 222<p>Default value: 0</p> 223</div> 224<hr> 225<div class="refsect2"> 226<a name="GstIirEqualizer3Bands--band2"></a><h3>The <code class="literal">“band2”</code> property</h3> 227<pre class="programlisting"> “band2” <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a></pre> 228<p>gain for the frequency band 11 kHz, ranging from -24.0 to +12.0.</p> 229<p>Flags: Read / Write</p> 230<p>Allowed values: [-24,12]</p> 231<p>Default value: 0</p> 232</div> 233</div> 234</div> 235<div class="footer"> 236<hr>Generated by GTK-Doc V1.28</div> 237</body> 238</html>
