1 files changed, 99 insertions, 0 deletions
diff --git a/src/loris/NoiseGenerator.h b/src/loris/NoiseGenerator.h
new file mode 100644
index 0000000..95ddccd
--- /dev/null
+++ b/src/loris/NoiseGenerator.h
@@ -0,0 +1,99 @@
+#ifndef NOISEGENERATOR_H
+#define NOISEGENERATOR_H
+/*
+ * This is the Loris C++ Class Library, implementing analysis, 
+ * manipulation, and synthesis of digitized sounds using the Reassigned 
+ * Bandwidth-Enhanced Additive Sound Model.
+ *
+ * Loris is Copyright (c) 1999-2010 by Kelly Fitz and Lippold Haken
+ *
+ * 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
+ *
+ *
+ * NoiseGenerator.h
+ *
+ * Definition of a class representing a gaussian noise generator, filtered and 
+ * used as a modulator in bandwidth-enhanced synthesis.
+ *
+ * Kelly Fitz, 5 June 2003
+ * revised 11 October 2009
+ * loris@cerlsoundgroup.org
+ *
+ * http://www.cerlsoundgroup.org/Loris/
+ *
+ */
+
+//	begin namespace
+namespace Loris {
+
+// ---------------------------------------------------------------------------
+//	class NoiseGenerator
+//
+class NoiseGenerator
+{
+//	--- interface ---
+
+public:
+
+	//!	Create a new noise generator with the (optionally) specified
+	//! seed (default is 1.0).
+	//!
+	//!	\param initSeed is the initial seed for the random number generator
+	explicit NoiseGenerator( double initSeed = 1.0 );
+
+
+	//	copy and assign are free
+	
+	
+	//!	Re-seed the random number generator.
+	//!
+	//!	\param newSeed is the new seed for the random number generator
+	void seed( double newSeed );
+	
+	//	sample
+	//
+	//!	Generate and return a new sample of Gaussian noise having zero
+	//! mean and unity standard deviation. Approximate the normal distribution 
+	//!	using the Box-Muller transformation applied to a uniform random number 
+	//!	generator taken from "Random Number Generators: Good Ones Are Hard To Find," 
+	//!	Stephen Park and Keith Miller, Communications of the ACM, October 1988,
+	//! vol. 31, Number 10.
+	double sample( void );
+	
+	//! Function call operator, same as calling sample().
+	//!	
+	//!	\sa sample
+	double operator() ( void ) 	{ return sample(); }
+	
+
+//	--- implementation ---
+private:
+
+	//	random number generation helpers
+	inline double uniform( void );
+	inline double gaussian_normal( void );
+
+
+	// random number generator state variables
+	double m_useed;
+	double m_gset;
+	bool m_iset;
+	
+};
+
+
+}	//	end of namespace Loris
+
+#endif	/* ndef NOISEGENERATOR_H */