X-Git-Url: https://scm.cri.ensmp.fr/git/Faustine.git/blobdiff_plain/1059e1cc0c2ecfa237406949aa26155b6a5b9154..66f23d4fabf89ad09adbd4dfc15ac6b5b2b7da83:/interpreter/preprocessor/faust-0.9.47mr3/tools/faust2pd/examples/faust/bandfilter.dsp

diff --git a/interpreter/preprocessor/faust-0.9.47mr3/tools/faust2pd/examples/faust/bandfilter.dsp b/interpreter/preprocessor/faust-0.9.47mr3/tools/faust2pd/examples/faust/bandfilter.dsp
new file mode 100644
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+++ b/interpreter/preprocessor/faust-0.9.47mr3/tools/faust2pd/examples/faust/bandfilter.dsp
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+declare name 		"bandfilter";
+declare version 	"1.0";
+declare author 		"Grame";
+declare license 	"BSD";
+declare copyright 	"(c)GRAME 2006";
+
+import("math.lib");
+import("music.lib");
+
+//---------------------second order filter--------------------------
+// filter(Q,F,G)
+//  			Q : quality factor [1..100]
+//				F :	frequency (Hz)
+//				G : gain [0..1]
+//------------------------------------------------------------------
+
+filter(Q,F,G)	= TF2(  (1 +  K/Q + K*K) 	/ D,
+						 2 * (K*K - 1) 		/ D,
+						(1 - K/Q + K*K) 	/ D,
+						 2 * (K*K - 1) 		/ D,
+						(1 - V*K/Q + K*K) 	/ D
+					 )
+		with {
+				V = db2linear(G);
+				K = tan(PI*F/SR);
+				D = 1 + V*K/Q + K*K;
+		};
+
+
+
+//--------------- Band Filter with user interface ------------------
+// bandfilter(F)
+//  			F :	default frequency (Hz)
+//
+//------------------------------------------------------------------
+
+bandfilter(F)	= filter(	nentry("Q factor",50,0.1,100,0.1),
+							nentry("freq (Hz)", F, 20, 20000, 1),
+							0 - vslider("gain (dB)", 0, -50, 50, 0.1)
+						);
+
+
+
+//------------------------- Process --------------------------------
+
+process 		= vgroup("Bandfilter", bandfilter(1000));
+