Initial git commit

Source/PS_Source/BinauralBeats.h

@@ -0,0 +1,112 @@
+/*
+ 
+  Copyright (C) 2011 Nasca Octavian Paul
+  Author: Nasca Octavian Paul
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of version 2 of the GNU General Public License 
+  as published by the Free Software Foundation.
+
+  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 (version 2) for more details.
+
+  You should have received a copy of the GNU General Public License (version 2)
+  along with this program; if not, write to the Free Software Foundation,
+  Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+*/
+
+#pragma once
+#include "FreeEdit.h"
+
+#include "globals.h"
+
+#include "../JuceLibraryCode/JuceHeader.h"
+
+class AP{//allpass
+	public:
+		AP(REALTYPE a_=0.5){
+			in1=in2=out1=out2=0.0;
+			set(a_);
+		};
+		REALTYPE process(REALTYPE in){
+			REALTYPE out=a*(in+out2)-in2;
+			in2=in1;in1=in;
+			out2=out1;out1=out;
+
+			return out;
+		};
+		REALTYPE set(REALTYPE a_){
+			a=a_*a_;
+			return a;
+		};
+	private:
+		REALTYPE in1,in2,out1,out2;
+		REALTYPE a;
+};
+
+
+
+class Hilbert{
+	public:
+		Hilbert(){
+			for (int i=0;i<N;i++){
+				apl[i].set(coefl[i]);
+				apr[i].set(coefr[i]);
+			};
+			oldl=0.0;
+		};
+		void process(REALTYPE in, REALTYPE &out1, REALTYPE &out2){
+			out1=oldl;
+			out2=in;
+
+			for (int i=0;i<N;i++){
+				out1=apl[i].process(out1);
+				out2=apr[i].process(out2);
+			};
+
+
+			oldl=in;	
+		};
+
+	private:
+		static const int N=4;
+		static const REALTYPE coefl[];
+		static const REALTYPE coefr[];
+		AP apl[N],apr[N];
+		REALTYPE oldl;
+};
+
+enum BB_STEREO_MODE{
+	SM_LEFT_RIGHT=0,
+	SM_RIGHT_LEFT=1,
+	SM_SYMMETRIC=2
+};
+
+struct BinauralBeatsParameters{
+	BinauralBeatsParameters(){
+		stereo_mode=SM_LEFT_RIGHT;
+		mono=0.5;
+	};
+
+	BB_STEREO_MODE stereo_mode;
+	float mono;
+	FreeEdit free_edit;
+	//void add2XML(XMLwrapper *xml);
+	//void getfromXML(XMLwrapper *xml);
+};
+
+class BinauralBeats{
+	public:
+		BinauralBeats(int samplerate_);
+		void process(REALTYPE *smpsl,REALTYPE *smpsr,int nsmps,REALTYPE pos_percents);
+		BinauralBeatsParameters pars;
+	private:
+		int samplerate;
+		REALTYPE hilbert_t;
+		Hilbert hl,hr;
+		JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(BinauralBeats)
+};
+
+