--- /dev/null
+//======================================================
+//
+// Freeverb
+// Faster version using fixed delays (20% gain)
+//
+//======================================================
+
+declare name "freeverb -- a Schroeder reverb";
+declare author "Yann Orlarey";
+declare version "1.0";
+
+// Constant Parameters
+//--------------------
+
+fixedgain = 0.015;
+scalewet = 3.0;
+scaledry = 2.0;
+scaledamp = 0.4;
+scaleroom = 0.28;
+offsetroom = 0.7;
+initialroom = 0.5;
+initialdamp = 0.5;
+initialwet = 1.0/scalewet;
+initialdry = 0;
+initialwidth= 1.0;
+initialmode = 0.0;
+freezemode = 0.5;
+stereospread= 23;
+allpassfeed = 0.5;
+
+
+// Filter Parametres
+//------------------
+
+combtuningL1 = 1116;
+combtuningL2 = 1188;
+combtuningL3 = 1277;
+combtuningL4 = 1356;
+combtuningL5 = 1422;
+combtuningL6 = 1491;
+combtuningL7 = 1557;
+combtuningL8 = 1617;
+
+allpasstuningL1 = 556;
+allpasstuningL2 = 441;
+allpasstuningL3 = 341;
+allpasstuningL4 = 225;
+
+
+// Control Sliders
+//--------------------
+// Damp : filtrage des aigus des echos (surtout actif pour des grandes valeurs de RoomSize)
+// RoomSize : taille de la piece
+// Dry : signal original
+// Wet : signal avec reverb\8eration
+
+dampSlider = hslider("damp",0.5, 0, 1, 0.025)*scaledamp;
+roomsizeSlider = hslider("roomsize", 0.5, 0, 1, 0.025)*scaleroom + offsetroom;
+wetSlider = hslider("wet", 0.3333, 0, 1, 0.025);
+drySlider = hslider("dry", 0, 0, 1, 0.025);
+combfeed = roomsizeSlider;
+
+
+
+
+
+// Comb and Allpass filters
+//-------------------------
+
+allpass(dt,fb) = (_,_ <: (*(fb),_:+:@(dt)), -) ~ _ : (!,_);
+
+comb(dt, fb, damp) = (+:@(dt)) ~ (*(1-damp) : (+ ~ *(damp)) : *(fb));
+
+
+// Reverb components
+//------------------
+
+monoReverb(fb1, fb2, damp, spread)
+ = _ <: comb(combtuningL1+spread, fb1, damp),
+ comb(combtuningL2+spread, fb1, damp),
+ comb(combtuningL3+spread, fb1, damp),
+ comb(combtuningL4+spread, fb1, damp),
+ comb(combtuningL5+spread, fb1, damp),
+ comb(combtuningL6+spread, fb1, damp),
+ comb(combtuningL7+spread, fb1, damp),
+ comb(combtuningL8+spread, fb1, damp)
+ +>
+ allpass (allpasstuningL1+spread, fb2)
+ : allpass (allpasstuningL2+spread, fb2)
+ : allpass (allpasstuningL3+spread, fb2)
+ : allpass (allpasstuningL4+spread, fb2)
+ ;
+
+stereoReverb(fb1, fb2, damp, spread)
+ = + <: monoReverb(fb1, fb2, damp, 0), monoReverb(fb1, fb2, damp, spread);
+
+
+// fxctrl : add an input gain and a wet-dry control to a stereo FX
+//----------------------------------------------------------------
+
+fxctrl(g,w,Fx) = _,_ <: (*(g),*(g) : Fx : *(w),*(w)), *(1-w), *(1-w) +> _,_;
+
+
+
+// Freeverb
+//---------
+
+freeverb = vgroup("freeverb", fxctrl(fixedgain, wetSlider, stereoReverb(combfeed, allpassfeed, dampSlider, stereospread)));
+
+process = freeverb;