From 78c44f13463966c1bf3c2f7f86e65ba8d7efdfbc Mon Sep 17 00:00:00 2001
From: Chris Kiefer <chrisk13fer@gmail.com>
Date: Wed, 21 Dec 2011 16:10:33 +0000
Subject: Flange and chorus

---
 ofxMaxim/ofxMaxim/libs/maximilian.h | 40 ++++++++++++++++++++++++++++++++-----
 1 file changed, 35 insertions(+), 5 deletions(-)

diff --git a/ofxMaxim/ofxMaxim/libs/maximilian.h b/ofxMaxim/ofxMaxim/libs/maximilian.h
index d5234d1..0a3b95a 100755
--- a/ofxMaxim/ofxMaxim/libs/maximilian.h
+++ b/ofxMaxim/ofxMaxim/libs/maximilian.h
@@ -396,23 +396,53 @@ inline double maxiDistortion::fastAtanDist(const double in, const double shape)
 }
 
 
-class maxiDelayEffect {
+class maxiFlanger {
 public:
     //delay = delay time - ~800 sounds good
     //feedback = 0 - 1
     //speed = lfo speed in Hz, 0.0001 - 10 sounds good
     //depth = 0 - 1
-    double chorus(const double input, const unsigned int delay, const double feedback, const double speed, const double depth);
+    double flange(const double input, const unsigned int delay, const double feedback, const double speed, const double depth);
     maxiDelayline dl;
     maxiOsc lfo;
 
 };
 
-inline double maxiDelayEffect::chorus(const double input, const unsigned int delay, const double feedback, const double speed, const double depth) {
+inline double maxiFlanger::flange(const double input, const unsigned int delay, const double feedback, const double speed, const double depth)
+{
+    //todo: needs fixing
     double output;
     double lfoVal = lfo.triangle(speed);
-    output = dl.dl(input, delay + (lfoVal * depth * delay) + 1, feedback) + input;    
-    return output;
+    output = dl.dl(input, delay + (lfoVal * depth * delay) + 1, feedback) ;    
+    double normalise = (1 - fabs(output));
+    output *= normalise;
+    return (output + input) / 2.0;
+}
+
+class maxiChorus {
+public:
+    //delay = delay time - ~800 sounds good
+    //feedback = 0 - 1
+    //speed = lfo speed in Hz, 0.0001 - 10 sounds good
+    //depth = 0 - 1
+    double chorus(const double input, const unsigned int delay, const double feedback, const double speed, const double depth);
+    maxiDelayline dl, dl2;
+    maxiOsc lfo;
+    maxiFilter lopass;
+    
+};
+
+inline double maxiChorus::chorus(const double input, const unsigned int delay, const double feedback, const double speed, const double depth)
+{
+    //this needs fixing
+    double output1, output2;
+    double lfoVal = lfo.noise();
+    lfoVal = lopass.lores(lfoVal, speed, 1.0) * 2.0;
+    output1 = dl.dl(input, delay + (lfoVal * depth * delay) + 1, feedback) ;    
+    output2 = dl2.dl(input, (delay + (lfoVal * depth * delay * 1.02) + 1) * 0.98, feedback * 0.99) ;    
+    output1 *= (1.0 - fabs(output1));
+    output2 *= (1.0 - fabs(output2));
+    return (output1 + output2 + input) / 3.0;
 }
 
 #endif
-- 
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