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<a href="#gst-plugins-good-plugins-audiowsincband.synopsis" class="shortcut">Top</a>
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<a href="#gst-plugins-good-plugins-audiowsincband.description" class="shortcut">Description</a>
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<a href="#gst-plugins-good-plugins-audiowsincband.object-hierarchy" class="shortcut">Object Hierarchy</a>
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<a href="#gst-plugins-good-plugins-audiowsincband.properties" class="shortcut">Properties</a>
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<div class="refentry">
<a name="gst-plugins-good-plugins-audiowsincband"></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-audiowsincband.top_of_page"></a>audiowsincband</span></h2>
<p>audiowsincband — Band pass and band reject windowed sinc filter</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv">
<a name="gst-plugins-good-plugins-audiowsincband.synopsis"></a><h2>Synopsis</h2>
<a name="GstAudioWSincBand"></a><pre class="synopsis">struct <a class="link" href="gst-plugins-good-plugins-audiowsincband.html#GstAudioWSincBand-struct" title="struct GstAudioWSincBand">GstAudioWSincBand</a>;
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-audiowsincband.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="synopsis">
<a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject">GObject</a>
+----<a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstObject.html">GstObject</a>
+----<a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstElement.html">GstElement</a>
+----<a href="/usr/share/gtk-doc/html/gstreamer-libs-0.10/GstBaseTransform.html">GstBaseTransform</a>
+----<a href="/usr/share/gtk-doc/html/gst-plugins-base-libs-0.10/gst-plugins-base-libs-gstaudiofilter.html#GstAudioFilter">GstAudioFilter</a>
+----GstAudioFXBaseFIRFilter
+----GstAudioWSincBand
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-audiowsincband.properties"></a><h2>Properties</h2>
<pre class="synopsis">
"<a class="link" href="gst-plugins-good-plugins-audiowsincband.html#GstAudioWSincBand--lower-frequency" title='The "lower-frequency" property'>lower-frequency</a>" <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gfloat"><span class="type">gfloat</span></a> : Read / Write
"<a class="link" href="gst-plugins-good-plugins-audiowsincband.html#GstAudioWSincBand--upper-frequency" title='The "upper-frequency" property'>upper-frequency</a>" <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gfloat"><span class="type">gfloat</span></a> : Read / Write
"<a class="link" href="gst-plugins-good-plugins-audiowsincband.html#GstAudioWSincBand--mode" title='The "mode" property'>mode</a>" <span class="type">GstAudioWSincBandMode</span> : Read / Write
"<a class="link" href="gst-plugins-good-plugins-audiowsincband.html#GstAudioWSincBand--window" title='The "window" property'>window</a>" <span class="type">GstAudioWSincBandWindow</span> : Read / Write
"<a class="link" href="gst-plugins-good-plugins-audiowsincband.html#GstAudioWSincBand--length" title='The "length" property'>length</a>" <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> : Read / Write
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-audiowsincband.description"></a><h2>Description</h2>
<p>
Attenuates all frequencies outside (bandpass) or inside (bandreject) of a frequency
band. The length parameter controls the rolloff, the window parameter
controls rolloff and stopband attenuation. The Hamming window provides a faster rolloff but a bit
worse stopband attenuation, the other way around for the Blackman window.
</p>
<p>
This element has the advantage over the Chebyshev bandpass and bandreject filter that it has
a much better rolloff when using a larger kernel size and almost linear phase. The only
disadvantage is the much slower execution time with larger kernels.
</p>
<p>
</p>
<div class="refsect2">
<a name="idp4611120"></a><h3>Example launch line</h3>
<div class="informalexample"><pre class="programlisting">
gst-launch audiotestsrc freq=1500 ! audioconvert ! audiosincband mode=band-pass lower-frequency=3000 upper-frequency=10000 length=501 window=blackman ! audioconvert ! alsasink
gst-launch filesrc location="melo1.ogg" ! oggdemux ! vorbisdec ! audioconvert ! audiowsincband mode=band-reject lower-frequency=59 upper-frequency=61 length=10001 window=hamming ! audioconvert ! alsasink
gst-launch audiotestsrc wave=white-noise ! audioconvert ! audiowsincband mode=band-pass lower-frequency=1000 upper-frequency=2000 length=31 ! audioconvert ! alsasink
</pre></div>
</div>
<p>
</p>
<div class="refsynopsisdiv">
<h2>Synopsis</h2>
<div class="refsect2">
<a name="idp3737376"></a><h3>Element Information</h3>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term">plugin</span></p></td>
<td>
<a class="link" href="gst-plugins-good-plugins-plugin-audiofx.html#plugin-audiofx">audiofx</a>
</td>
</tr>
<tr>
<td><p><span class="term">author</span></p></td>
<td>Thomas Vander Stichele <thomas at apestaart dot org>, Steven W. Smith, Dreamlab Technologies Ltd. <mathis.hofer@dreamlab.net>, Sebastian Dröge <sebastian.droege@collabora.co.uk></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="idp3371936"></a><h3>Element Pads</h3>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<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-float, width=(int){ 32, 64 }, endianness=(int)1234, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ]</td>
</tr>
</tbody>
</table></div>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<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-float, width=(int){ 32, 64 }, endianness=(int)1234, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ]</td>
</tr>
</tbody>
</table></div>
</div>
</div>
<p>
</p>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-audiowsincband.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="GstAudioWSincBand-struct"></a><h3>struct GstAudioWSincBand</h3>
<pre class="programlisting">struct GstAudioWSincBand;</pre>
<p>
Opaque data structure.
</p>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-audiowsincband.property-details"></a><h2>Property Details</h2>
<div class="refsect2">
<a name="GstAudioWSincBand--lower-frequency"></a><h3>The <code class="literal">"lower-frequency"</code> property</h3>
<pre class="programlisting"> "lower-frequency" <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gfloat"><span class="type">gfloat</span></a> : Read / Write</pre>
<p>Cut-off lower frequency (Hz).</p>
<p>Allowed values: [0,100000]</p>
<p>Default value: 0</p>
</div>
<hr>
<div class="refsect2">
<a name="GstAudioWSincBand--upper-frequency"></a><h3>The <code class="literal">"upper-frequency"</code> property</h3>
<pre class="programlisting"> "upper-frequency" <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gfloat"><span class="type">gfloat</span></a> : Read / Write</pre>
<p>Cut-off upper frequency (Hz).</p>
<p>Allowed values: [0,100000]</p>
<p>Default value: 0</p>
</div>
<hr>
<div class="refsect2">
<a name="GstAudioWSincBand--mode"></a><h3>The <code class="literal">"mode"</code> property</h3>
<pre class="programlisting"> "mode" <span class="type">GstAudioWSincBandMode</span> : Read / Write</pre>
<p>Band pass or band reject mode.</p>
<p>Default value: Band pass (default)</p>
</div>
<hr>
<div class="refsect2">
<a name="GstAudioWSincBand--window"></a><h3>The <code class="literal">"window"</code> property</h3>
<pre class="programlisting"> "window" <span class="type">GstAudioWSincBandWindow</span> : Read / Write</pre>
<p>Window function to use.</p>
<p>Default value: Hamming window (default)</p>
</div>
<hr>
<div class="refsect2">
<a name="GstAudioWSincBand--length"></a><h3>The <code class="literal">"length"</code> property</h3>
<pre class="programlisting"> "length" <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> : Read / Write</pre>
<p>Filter kernel length, will be rounded to the next odd number.</p>
<p>Allowed values: [3,256000]</p>
<p>Default value: 101</p>
</div>
</div>
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