New directory tree, with preprocessor/ inside interpretor/.

[Faustine.git] / interpretor / preprocessor / faust-0.9.47mr3 / tools / faust2pd / examples / faust / lowboost.dsp

diff --git a/interpretor/preprocessor/faust-0.9.47mr3/tools/faust2pd/examples/faust/lowboost.dsp b/interpretor/preprocessor/faust-0.9.47mr3/tools/faust2pd/examples/faust/lowboost.dsp
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+++ b/interpretor/preprocessor/faust-0.9.47mr3/tools/faust2pd/examples/faust/lowboost.dsp
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+declare name           "lowboost";
+declare version        "1.0";
+declare author                 "Grame";
+declare license        "BSD";
+declare copyright      "(c)GRAME 2006";
+
+//------------------------------------------------------------------
+//     DAFX, Digital Audio Effects (Wiley ed.)
+//     chapter 2       : filters
+//     section 2.3 : Equalizers
+//     page 53         : second order shelving filter design
+//------------------------------------------------------------------
+
+import("music.lib");
+
+
+//------------------- low-frequency shelving boost (table 2.3) --------------------
+
+V0(g)                  = pow(10,g/20.0);
+K(fc)                  = tan(PI*fc/SR);
+square(x)              = x*x;
+denom(fc)              = 1 + sqrt(2)*K(fc) + square(K(fc));
+
+lfboost(fc, g) = TF2(  (1 + sqrt(2*V0(g))*K(fc) + V0(g)*square(K(fc))) / denom(fc),
+                                                2 * (V0(g)*square(K(fc)) - 1) / denom(fc),
+                                               (1 - sqrt(2*V0(g))*K(fc) + V0(g)*square(K(fc))) / denom(fc),
+                                                2 * (square(K(fc)) - 1) / denom(fc),
+                                               (1 - sqrt(2)*K(fc) + square(K(fc))) / denom(fc)
+                                        );
+
+
+//------------------------------ User Interface -----------------------------------
+
+freq                           = hslider("freq", 1000, 20, 20000, 0.1);
+gain                           = hslider("gain (db)", 0, -20, 20, 0.1);
+
+
+//----------------------------------- Process -------------------------------------
+
+process                        = vgroup("low-freq shelving boost", lfboost(freq,gain));
+