Rename audiovoice to audiokaraoke and add it to the docs.

Original commit message from CVS:
* docs/plugins/Makefile.am:
* docs/plugins/gst-plugins-good-plugins-docs.sgml:
* docs/plugins/gst-plugins-good-plugins-sections.txt:
* docs/plugins/gst-plugins-good-plugins.args:
* docs/plugins/gst-plugins-good-plugins.hierarchy:
* docs/plugins/inspect/plugin-audiofx.xml:
* gst/audiofx/Makefile.am:
* gst/audiofx/audiofx.c:
* gst/audiofx/audiokaraoke.c:
* gst/audiofx/audiokaraoke.h:
* gst/audiofx/audiovoice.c:
* gst/audiofx/audiovoice.h:
Rename audiovoice to audiokaraoke and add it to the docs.

11 files changed, 155 insertions, 59 deletions

diff --git a/ChangeLog b/ChangeLog
index 7b021c2a..6c6ee4de 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,21 @@
 2008-05-28  Stefan Kost  <ensonic@users.sf.net>
 
+	* docs/plugins/Makefile.am:
+	* docs/plugins/gst-plugins-good-plugins-docs.sgml:
+	* docs/plugins/gst-plugins-good-plugins-sections.txt:
+	* docs/plugins/gst-plugins-good-plugins.args:
+	* docs/plugins/gst-plugins-good-plugins.hierarchy:
+	* docs/plugins/inspect/plugin-audiofx.xml:
+	* gst/audiofx/Makefile.am:
+	* gst/audiofx/audiofx.c:
+	* gst/audiofx/audiokaraoke.c:
+	* gst/audiofx/audiokaraoke.h:
+	* gst/audiofx/audiovoice.c:
+	* gst/audiofx/audiovoice.h:
+	  Rename audiovoice to audiokaraoke and add it to the docs.
+
+2008-05-28  Stefan Kost  <ensonic@users.sf.net>
+
 	* REQUIREMENTS:
 	* docs/plugins/Makefile.am:
 	* docs/plugins/gst-plugins-good-plugins-docs.sgml:
diff --git a/docs/plugins/Makefile.am b/docs/plugins/Makefile.am
index e8dd002f..00d31b85 100644
--- a/docs/plugins/Makefile.am
+++ b/docs/plugins/Makefile.am
@@ -102,6 +102,7 @@ EXTRA_HFILES = \
 	$(top_srcdir)/gst/audiofx/audioamplify.h \
 	$(top_srcdir)/gst/audiofx/audiodynamic.h \
 	$(top_srcdir)/gst/audiofx/audioinvert.h \
+	$(top_srcdir)/gst/audiofx/audiokaraoke.h \
 	$(top_srcdir)/gst/audiofx/audiopanorama.h \
 	$(top_srcdir)/gst/audiofx/audiocheblimit.h \
 	$(top_srcdir)/gst/audiofx/audiochebband.h \
diff --git a/docs/plugins/gst-plugins-good-plugins-docs.sgml b/docs/plugins/gst-plugins-good-plugins-docs.sgml
index add34ba7..1dea9b96 100644
--- a/docs/plugins/gst-plugins-good-plugins-docs.sgml
+++ b/docs/plugins/gst-plugins-good-plugins-docs.sgml
@@ -24,6 +24,7 @@
     <xi:include href="xml/element-audiodynamic.xml" />
     <xi:include href="xml/element-audioinvert.xml" />
     <xi:include href="xml/element-audiopanorama.xml" />
+    <xi:include href="xml/element-audiokaraoke.xml" />
     <xi:include href="xml/element-autoaudiosink.xml" />
     <xi:include href="xml/element-autovideosink.xml" />
     <xi:include href="xml/element-avidemux.xml" />
diff --git a/docs/plugins/gst-plugins-good-plugins-sections.txt b/docs/plugins/gst-plugins-good-plugins-sections.txt
index 120bad21..b30bc3c6 100644
--- a/docs/plugins/gst-plugins-good-plugins-sections.txt
+++ b/docs/plugins/gst-plugins-good-plugins-sections.txt
@@ -136,6 +136,22 @@ gst_audio_invert_get_type
 </SECTION>
 
 <SECTION>
+<FILE>element-audiokaraoke</FILE>
+<TITLE>audiokaraoke</TITLE>
+GstAudioKaraoke
+<SUBSECTION Standard>
+GstAudioKaraokeClass
+GstAudioKaraokeProcessFunc
+GST_AUDIO_KARAOKE
+GST_AUDIO_KARAOKE_CLASS
+GST_AUDIO_KARAOKE_GET_CLASS
+GST_IS_AUDIO_KARAOKE
+GST_IS_AUDIO_KARAOKE_CLASS
+GST_TYPE_AUDIO_KARAOKE
+gst_audio_karaoke_get_type
+</SECTION>
+
+<SECTION>
 <FILE>element-audiopanorama</FILE>
 <TITLE>audiopanorama</TITLE>
 GstAudioPanorama
diff --git a/docs/plugins/gst-plugins-good-plugins.args b/docs/plugins/gst-plugins-good-plugins.args
index d6255b01..cdf8444d 100644
--- a/docs/plugins/gst-plugins-good-plugins.args
+++ b/docs/plugins/gst-plugins-good-plugins.args
@@ -19208,3 +19208,43 @@
 <DEFAULT>TRUE</DEFAULT>
 </ARG>
 
+<ARG>
+<NAME>GstAudioKaraoke::filter-band</NAME>
+<TYPE>gfloat</TYPE>
+<RANGE>[0,441]</RANGE>
+<FLAGS>rw</FLAGS>
+<NICK>Filter Band</NICK>
+<BLURB>The Frequency band of the filter.</BLURB>
+<DEFAULT>220</DEFAULT>
+</ARG>
+
+<ARG>
+<NAME>GstAudioKaraoke::filter-width</NAME>
+<TYPE>gfloat</TYPE>
+<RANGE>[0,100]</RANGE>
+<FLAGS>rw</FLAGS>
+<NICK>Filter Width</NICK>
+<BLURB>The Frequency width of the filter.</BLURB>
+<DEFAULT>100</DEFAULT>
+</ARG>
+
+<ARG>
+<NAME>GstAudioKaraoke::level</NAME>
+<TYPE>gfloat</TYPE>
+<RANGE>[0,1]</RANGE>
+<FLAGS>rw</FLAGS>
+<NICK>Level</NICK>
+<BLURB>Level of the effect (1.0 = full).</BLURB>
+<DEFAULT>1</DEFAULT>
+</ARG>
+
+<ARG>
+<NAME>GstAudioKaraoke::mono-level</NAME>
+<TYPE>gfloat</TYPE>
+<RANGE>[0,1]</RANGE>
+<FLAGS>rw</FLAGS>
+<NICK>Mono Level</NICK>
+<BLURB>Level of the mono channel (1.0 = full).</BLURB>
+<DEFAULT>1</DEFAULT>
+</ARG>
+
diff --git a/docs/plugins/gst-plugins-good-plugins.hierarchy b/docs/plugins/gst-plugins-good-plugins.hierarchy
index acad396e..ecedf9ff 100644
--- a/docs/plugins/gst-plugins-good-plugins.hierarchy
+++ b/docs/plugins/gst-plugins-good-plugins.hierarchy
@@ -45,6 +45,7 @@ GObject
         GstAudioPanorama
         GstAudioFilter
           GstAudioInvert
+          GstAudioKaraoke
           GstAudioAmplify
           GstAudioDynamic
           GstAudioChebLimit
diff --git a/docs/plugins/inspect/plugin-audiofx.xml b/docs/plugins/inspect/plugin-audiofx.xml
index a005d516..f9cceb98 100644
--- a/docs/plugins/inspect/plugin-audiofx.xml
+++ b/docs/plugins/inspect/plugin-audiofx.xml
@@ -115,6 +115,27 @@
       </pads>
     </element>
     <element>
+      <name>audiokaraoke</name>
+      <longname>AudioKaraoke</longname>
+      <class>Filter/Effect/Audio</class>
+      <description>Removes voice from sound</description>
+      <author>Wim Taymans &lt;wim.taymans@gmail.com&gt;</author>
+      <pads>
+        <caps>
+          <name>src</name>
+          <direction>source</direction>
+          <presence>always</presence>
+          <details>audio/x-raw-int, depth=(int)16, width=(int)16, endianness=(int)1234, signed=(boolean)true, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ]; audio/x-raw-float, width=(int)32, endianness=(int)1234, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ]</details>
+        </caps>
+        <caps>
+          <name>sink</name>
+          <direction>sink</direction>
+          <presence>always</presence>
+          <details>audio/x-raw-int, depth=(int)16, width=(int)16, endianness=(int)1234, signed=(boolean)true, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ]; audio/x-raw-float, width=(int)32, endianness=(int)1234, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ]</details>
+        </caps>
+      </pads>
+    </element>
+    <element>
       <name>audiopanorama</name>
       <longname>Stereo positioning</longname>
       <class>Filter/Effect/Audio</class>
diff --git a/gst/audiofx/Makefile.am b/gst/audiofx/Makefile.am
index 28de5e2a..5754eba9 100644
--- a/gst/audiofx/Makefile.am
+++ b/gst/audiofx/Makefile.am
@@ -8,7 +8,7 @@ libgstaudiofx_la_SOURCES = audiofx.c\
 	audioinvert.c \
 	audioamplify.c \
 	audiodynamic.c \
-	audiovoice.c \
+	audiokaraoke.c \
 	audiocheblimit.c \
 	audiochebband.c \
 	audiowsincband.c \
@@ -32,7 +32,7 @@ noinst_HEADERS = audiopanorama.h \
 	audioinvert.h \
 	audioamplify.h \
 	audiodynamic.h \
-	audiovoice.h \
+	audiokaraoke.h \
 	audiocheblimit.h \
 	audiochebband.h \
 	audiowsincband.h \
diff --git a/gst/audiofx/audiofx.c b/gst/audiofx/audiofx.c
index f9b62ca9..43d1b0cc 100644
--- a/gst/audiofx/audiofx.c
+++ b/gst/audiofx/audiofx.c
@@ -27,7 +27,7 @@
 
 #include "audiopanorama.h"
 #include "audioinvert.h"
-#include "audiovoice.h"
+#include "audiokaraoke.h"
 #include "audioamplify.h"
 #include "audiodynamic.h"
 #include "audiocheblimit.h"
@@ -50,8 +50,8 @@ plugin_init (GstPlugin * plugin)
           GST_TYPE_AUDIO_PANORAMA) &&
       gst_element_register (plugin, "audioinvert", GST_RANK_NONE,
           GST_TYPE_AUDIO_INVERT) &&
-      gst_element_register (plugin, "audiovoice", GST_RANK_NONE,
-          GST_TYPE_AUDIO_VOICE) &&
+      gst_element_register (plugin, "audiokaraoke", GST_RANK_NONE,
+          GST_TYPE_AUDIO_KARAOKE) &&
       gst_element_register (plugin, "audioamplify", GST_RANK_NONE,
           GST_TYPE_AUDIO_AMPLIFY) &&
       gst_element_register (plugin, "audiodynamic", GST_RANK_NONE,
diff --git a/gst/audiofx/audiovoice.c b/gst/audiofx/audiokaraoke.c
index 08916c11..ec505681 100644
--- a/gst/audiofx/audiovoice.c
+++ b/gst/audiofx/audiokaraoke.c
@@ -19,16 +19,16 @@
  */
 
 /**
- * SECTION:element-audiovoice
+ * SECTION:element-audiokaraoke
  * @short_description: Voice removal element
  *
  * <refsect2>
- * Remove the voice from audio by removing the center channel.
+ * Remove the voice from audio by filtering the center channel.
  * This plugin is useful for karaoke applications.
  * <title>Example launch line</title>
  * <para>
  * <programlisting>
- * gst-launch filesrc location="song.ogg" ! oggdemux ! vorbisdec ! audiovoice ! audioconvert ! alsasink
+ * gst-launch filesrc location=song.ogg ! oggdemux ! vorbisdec ! audiokaraoke ! audioconvert ! alsasink
  * </programlisting>
  * </para>
  * </refsect2>
@@ -46,13 +46,13 @@
 #include <gst/audio/gstaudiofilter.h>
 #include <gst/controller/gstcontroller.h>
 
-#include "audiovoice.h"
+#include "audiokaraoke.h"
 
-#define GST_CAT_DEFAULT gst_audio_voice_debug
+#define GST_CAT_DEFAULT gst_audio_karaoke_debug
 GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
 
 static const GstElementDetails element_details =
-GST_ELEMENT_DETAILS ("AudioVoice",
+GST_ELEMENT_DETAILS ("AudioKaraoke",
     "Filter/Effect/Audio",
     "Removes voice from sound",
     "Wim Taymans <wim.taymans@gmail.com>");
@@ -94,30 +94,30 @@ enum
     " channels=(int)[1,MAX]"
 
 #define DEBUG_INIT(bla) \
-  GST_DEBUG_CATEGORY_INIT (gst_audio_voice_debug, "audiovoice", 0, "audiovoice element");
+  GST_DEBUG_CATEGORY_INIT (gst_audio_karaoke_debug, "audiokaraoke", 0, "audiokaraoke element");
 
-GST_BOILERPLATE_FULL (GstAudioVoice, gst_audio_voice, GstAudioFilter,
+GST_BOILERPLATE_FULL (GstAudioKaraoke, gst_audio_karaoke, GstAudioFilter,
     GST_TYPE_AUDIO_FILTER, DEBUG_INIT);
 
-static void gst_audio_voice_set_property (GObject * object, guint prop_id,
+static void gst_audio_karaoke_set_property (GObject * object, guint prop_id,
     const GValue * value, GParamSpec * pspec);
-static void gst_audio_voice_get_property (GObject * object, guint prop_id,
+static void gst_audio_karaoke_get_property (GObject * object, guint prop_id,
     GValue * value, GParamSpec * pspec);
 
-static gboolean gst_audio_voice_setup (GstAudioFilter * filter,
+static gboolean gst_audio_karaoke_setup (GstAudioFilter * filter,
     GstRingBufferSpec * format);
-static GstFlowReturn gst_audio_voice_transform_ip (GstBaseTransform * base,
+static GstFlowReturn gst_audio_karaoke_transform_ip (GstBaseTransform * base,
     GstBuffer * buf);
 
-static void gst_audio_voice_transform_int (GstAudioVoice * filter,
+static void gst_audio_karaoke_transform_int (GstAudioKaraoke * filter,
     gint16 * data, guint num_samples);
-static void gst_audio_voice_transform_float (GstAudioVoice * filter,
+static void gst_audio_karaoke_transform_float (GstAudioKaraoke * filter,
     gfloat * data, guint num_samples);
 
 /* GObject vmethod implementations */
 
 static void
-gst_audio_voice_base_init (gpointer klass)
+gst_audio_karaoke_base_init (gpointer klass)
 {
   GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
   GstCaps *caps;
@@ -131,13 +131,13 @@ gst_audio_voice_base_init (gpointer klass)
 }
 
 static void
-gst_audio_voice_class_init (GstAudioVoiceClass * klass)
+gst_audio_karaoke_class_init (GstAudioKaraokeClass * klass)
 {
   GObjectClass *gobject_class;
 
   gobject_class = (GObjectClass *) klass;
-  gobject_class->set_property = gst_audio_voice_set_property;
-  gobject_class->get_property = gst_audio_voice_get_property;
+  gobject_class->set_property = gst_audio_karaoke_set_property;
+  gobject_class->get_property = gst_audio_karaoke_get_property;
 
   g_object_class_install_property (gobject_class, PROP_LEVEL,
       g_param_spec_float ("level", "Level",
@@ -160,13 +160,13 @@ gst_audio_voice_class_init (GstAudioVoiceClass * klass)
           G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
 
   GST_AUDIO_FILTER_CLASS (klass)->setup =
-      GST_DEBUG_FUNCPTR (gst_audio_voice_setup);
+      GST_DEBUG_FUNCPTR (gst_audio_karaoke_setup);
   GST_BASE_TRANSFORM_CLASS (klass)->transform_ip =
-      GST_DEBUG_FUNCPTR (gst_audio_voice_transform_ip);
+      GST_DEBUG_FUNCPTR (gst_audio_karaoke_transform_ip);
 }
 
 static void
-gst_audio_voice_init (GstAudioVoice * filter, GstAudioVoiceClass * klass)
+gst_audio_karaoke_init (GstAudioKaraoke * filter, GstAudioKaraokeClass * klass)
 {
   gst_base_transform_set_in_place (GST_BASE_TRANSFORM (filter), TRUE);
   gst_base_transform_set_gap_aware (GST_BASE_TRANSFORM (filter), TRUE);
@@ -178,7 +178,7 @@ gst_audio_voice_init (GstAudioVoice * filter, GstAudioVoiceClass * klass)
 }
 
 static void
-update_filter (GstAudioVoice * filter, gint rate)
+update_filter (GstAudioKaraoke * filter, gint rate)
 {
   gfloat A, B, C;
 
@@ -197,12 +197,12 @@ update_filter (GstAudioVoice * filter, gint rate)
 }
 
 static void
-gst_audio_voice_set_property (GObject * object, guint prop_id,
+gst_audio_karaoke_set_property (GObject * object, guint prop_id,
     const GValue * value, GParamSpec * pspec)
 {
-  GstAudioVoice *filter;
+  GstAudioKaraoke *filter;
 
-  filter = GST_AUDIO_VOICE (object);
+  filter = GST_AUDIO_KARAOKE (object);
 
   switch (prop_id) {
     case PROP_LEVEL:
@@ -226,12 +226,12 @@ gst_audio_voice_set_property (GObject * object, guint prop_id,
 }
 
 static void
-gst_audio_voice_get_property (GObject * object, guint prop_id,
+gst_audio_karaoke_get_property (GObject * object, guint prop_id,
     GValue * value, GParamSpec * pspec)
 {
-  GstAudioVoice *filter;
+  GstAudioKaraoke *filter;
 
-  filter = GST_AUDIO_VOICE (object);
+  filter = GST_AUDIO_KARAOKE (object);
 
   switch (prop_id) {
     case PROP_LEVEL:
@@ -255,20 +255,20 @@ gst_audio_voice_get_property (GObject * object, guint prop_id,
 /* GstAudioFilter vmethod implementations */
 
 static gboolean
-gst_audio_voice_setup (GstAudioFilter * base, GstRingBufferSpec * format)
+gst_audio_karaoke_setup (GstAudioFilter * base, GstRingBufferSpec * format)
 {
-  GstAudioVoice *filter = GST_AUDIO_VOICE (base);
+  GstAudioKaraoke *filter = GST_AUDIO_KARAOKE (base);
   gboolean ret = TRUE;
 
   filter->channels = format->channels;
   filter->rate = format->rate;
 
   if (format->type == GST_BUFTYPE_FLOAT && format->width == 32)
-    filter->process = (GstAudioVoiceProcessFunc)
-        gst_audio_voice_transform_float;
+    filter->process = (GstAudioKaraokeProcessFunc)
+        gst_audio_karaoke_transform_float;
   else if (format->type == GST_BUFTYPE_LINEAR && format->width == 16)
-    filter->process = (GstAudioVoiceProcessFunc)
-        gst_audio_voice_transform_int;
+    filter->process = (GstAudioKaraokeProcessFunc)
+        gst_audio_karaoke_transform_int;
   else
     ret = FALSE;
 
@@ -278,7 +278,7 @@ gst_audio_voice_setup (GstAudioFilter * base, GstRingBufferSpec * format)
 }
 
 static void
-gst_audio_voice_transform_int (GstAudioVoice * filter,
+gst_audio_karaoke_transform_int (GstAudioKaraoke * filter,
     gint16 * data, guint num_samples)
 {
   gint i, l, r, o, x;
@@ -311,7 +311,7 @@ gst_audio_voice_transform_int (GstAudioVoice * filter,
 }
 
 static void
-gst_audio_voice_transform_float (GstAudioVoice * filter,
+gst_audio_karaoke_transform_float (GstAudioKaraoke * filter,
     gfloat * data, guint num_samples)
 {
   gint i;
@@ -340,9 +340,9 @@ gst_audio_voice_transform_float (GstAudioVoice * filter,
 
 /* GstBaseTransform vmethod implementations */
 static GstFlowReturn
-gst_audio_voice_transform_ip (GstBaseTransform * base, GstBuffer * buf)
+gst_audio_karaoke_transform_ip (GstBaseTransform * base, GstBuffer * buf)
 {
-  GstAudioVoice *filter = GST_AUDIO_VOICE (base);
+  GstAudioKaraoke *filter = GST_AUDIO_KARAOKE (base);
   guint num_samples =
       GST_BUFFER_SIZE (buf) / (GST_AUDIO_FILTER (filter)->format.width / 8);
 
diff --git a/gst/audiofx/audiovoice.h b/gst/audiofx/audiokaraoke.h
index cf3ff4f6..727fafae 100644
--- a/gst/audiofx/audiovoice.h
+++ b/gst/audiofx/audiokaraoke.h
@@ -18,8 +18,8 @@
  * Boston, MA 02111-1307, USA.
  */
 
-#ifndef __GST_AUDIO_VOICE_H__
-#define __GST_AUDIO_VOICE_H__
+#ifndef __GST_AUDIO_KARAOKE_H__
+#define __GST_AUDIO_KARAOKE_H__
 
 #include <gst/gst.h>
 #include <gst/base/gstbasetransform.h>
@@ -27,18 +27,18 @@
 #include <gst/audio/gstaudiofilter.h>
 
 G_BEGIN_DECLS
-#define GST_TYPE_AUDIO_VOICE            (gst_audio_voice_get_type())
-#define GST_AUDIO_VOICE(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_VOICE,GstAudioVoice))
-#define GST_IS_AUDIO_VOICE(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_VOICE))
-#define GST_AUDIO_VOICE_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST((klass) ,GST_TYPE_AUDIO_VOICE,GstAudioVoiceClass))
-#define GST_IS_AUDIO_VOICE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) ,GST_TYPE_AUDIO_VOICE))
-#define GST_AUDIO_VOICE_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS((obj) ,GST_TYPE_AUDIO_VOICE,GstAudioVoiceClass))
-typedef struct _GstAudioVoice GstAudioVoice;
-typedef struct _GstAudioVoiceClass GstAudioVoiceClass;
+#define GST_TYPE_AUDIO_KARAOKE            (gst_audio_karaoke_get_type())
+#define GST_AUDIO_KARAOKE(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_KARAOKE,GstAudioKaraoke))
+#define GST_IS_AUDIO_KARAOKE(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_KARAOKE))
+#define GST_AUDIO_KARAOKE_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST((klass) ,GST_TYPE_AUDIO_KARAOKE,GstAudioKaraokeClass))
+#define GST_IS_AUDIO_KARAOKE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) ,GST_TYPE_AUDIO_KARAOKE))
+#define GST_AUDIO_KARAOKE_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS((obj) ,GST_TYPE_AUDIO_KARAOKE,GstAudioKaraokeClass))
+typedef struct _GstAudioKaraoke GstAudioKaraoke;
+typedef struct _GstAudioKaraokeClass GstAudioKaraokeClass;
 
-typedef void (*GstAudioVoiceProcessFunc) (GstAudioVoice *, guint8 *, guint);
+typedef void (*GstAudioKaraokeProcessFunc) (GstAudioKaraoke *, guint8 *, guint);
 
-struct _GstAudioVoice
+struct _GstAudioKaraoke
 {
   GstAudioFilter audiofilter;
 
@@ -56,15 +56,15 @@ struct _GstAudioVoice
   gfloat y1, y2;
 
   /* < private > */
-  GstAudioVoiceProcessFunc process;
+  GstAudioKaraokeProcessFunc process;
 };
 
-struct _GstAudioVoiceClass
+struct _GstAudioKaraokeClass
 {
   GstAudioFilterClass parent;
 };
 
-GType gst_audio_voice_get_type (void);
+GType gst_audio_karaoke_get_type (void);
 
 G_END_DECLS
-#endif /* __GST_AUDIO_VOICE_H__ */
+#endif /* __GST_AUDIO_KARAOKE_H__ */