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diff --git a/extern/audaspace/include/fx/Source.h b/extern/audaspace/include/fx/Source.h
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+++ b/extern/audaspace/include/fx/Source.h
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+/*******************************************************************************
+* Copyright 2015-2016 Juan Francisco Crespo Galán
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*   http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+******************************************************************************/
+
+#pragma once
+
+/**
+* @file Source.h
+* @ingroup fx
+* The Source class.
+*/
+
+#include "Audaspace.h"
+
+#include <atomic>
+
+AUD_NAMESPACE_BEGIN
+
+/**
+* This class stores the azimuth and elevation angles of a sound and allows to change them dynamically.
+* The azimuth angle goes clockwise. For a sound source situated at the right of the listener the azimuth angle is 90.
+*/
+class AUD_API Source
+{
+private:
+	/**
+	* Azimuth value.
+	*/
+	std::atomic<float> m_azimuth;
+
+	/**
+	* Elevation value.
+	*/
+	std::atomic<float> m_elevation;
+
+	/**
+	* Distance value. Between 0 and 1.
+	*/
+	std::atomic<float> m_distance;
+
+	// delete copy constructor and operator=
+	Source(const Source&) = delete;
+	Source& operator=(const Source&) = delete;
+
+public:
+	/**
+	* Creates a Source instance with an initial value.
+	* \param azimuth The value of the azimuth.
+	* \param elevation The value of the elevation.
+	* \param distance The distance from the listener. Max distance is 1, min distance is 0.
+	*/
+	Source(float azimuth, float elevation, float distance = 0.0);
+
+	/**
+	* Retrieves the current azimuth value.
+	* \return The current azimuth.
+	*/
+	float getAzimuth();
+
+	/**
+	* Retrieves the current elevation value.
+	* \return The current elevation.
+	*/
+	float getElevation();
+
+	/**
+	* Retrieves the current distance value.
+	* \return The current distance.
+	*/
+	float getDistance();
+
+	/**
+	* Retrieves the current volume value based on the distance.
+	* \return The current volume based on the Distance.
+	*/
+	float getVolume();
+
+	/**
+	* Changes the azimuth value.
+	* \param azimuth The new value for the azimuth.
+	*/
+	void setAzimuth(float azimuth);
+
+	/**
+	* Changes the elevation value.
+	* \param elevation The new value for the elevation.
+	*/
+	void setElevation(float elevation);
+
+	/**
+	* Changes the distance value.
+	* \param distance The new value for the distance. Max distance is 1, min distance is 0.
+	*/
+	void setDistance(float distance);
+};
+
+AUD_NAMESPACE_END
+\ No newline at end of file