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diff --git a/intern/audaspace/FX/AUD_DynamicIIRFilterReader.h b/intern/audaspace/FX/AUD_DynamicIIRFilterReader.h
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+++ b/intern/audaspace/FX/AUD_DynamicIIRFilterReader.h
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+/*
+ * $Id$
+ *
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * Copyright 2009-2011 Jörg Hermann Müller
+ *
+ * This file is part of AudaSpace.
+ *
+ * Audaspace 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.
+ *
+ * AudaSpace 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 Audaspace; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+/** \file audaspace/FX/AUD_DynamicIIRFilterReader.h
+ *  \ingroup audfx
+ */
+
+#ifndef AUD_DYNAMICIIRFILTERREADER
+#define AUD_DYNAMICIIRFILTERREADER
+
+#include "AUD_IIRFilterReader.h"
+#include "AUD_DynamicIIRFilterFactory.h"
+
+/**
+ * This class is for dynamic infinite impulse response filters with simple
+ * coefficients that change depending on the sample rate.
+ */
+class AUD_DynamicIIRFilterReader : public AUD_IIRFilterReader
+{
+private:
+	/**
+	 * The factory for dynamically recalculating filter coefficients.
+	 */
+	AUD_Reference<AUD_DynamicIIRFilterFactory> m_factory;
+
+public:
+	AUD_DynamicIIRFilterReader(AUD_Reference<AUD_IReader> reader,
+							   AUD_Reference<AUD_DynamicIIRFilterFactory> factory);
+
+	virtual void sampleRateChanged(AUD_SampleRate rate);
+};
+
+#endif // AUD_DYNAMICIIRFILTERREADER