diff --git a/linphone/mediastreamer2/include/mediastreamer2/msequalizer.h b/linphone/mediastreamer2/include/mediastreamer2/msequalizer.h
new file mode 100644
index 000000000..2f9007352
--- /dev/null
+++ b/linphone/mediastreamer2/include/mediastreamer2/msequalizer.h
@@ -0,0 +1,34 @@
+/*
+mediastreamer2 library - modular sound and video processing and streaming
+Copyright (C) 2009  Simon MORLAT (simon.morlat@linphone.org)
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+*/
+
+#ifndef msequalizer_h
+#define msequalizer_h
+
+#include <mediastreamer2/msfilter.h>
+
+typedef struct _MSEqualizerGain{
+	float frequency; ///< In hz
+	float gain; ///< between 0-1.2
+}MSEqualizerGain;
+
+#define MS_EQUALIZER_SET_GAIN	MS_FILTER_METHOD(MS_EQUALIZER_ID,0,MSEqualizerGain)
+#define MS_EQUALIZER_GET_GAIN	MS_FILTER_METHOD(MS_EQUALIZER_ID,1,MSEqualizerGain)
+
+#endif
+