1 files changed, 72 insertions, 0 deletions
diff --git a/muse_qt4_evolution/synti/zynaddsubfx/DSP/Filter.C b/muse_qt4_evolution/synti/zynaddsubfx/DSP/Filter.C
new file mode 100644
index 00000000..fccb0265
--- /dev/null
+++ b/muse_qt4_evolution/synti/zynaddsubfx/DSP/Filter.C
@@ -0,0 +1,72 @@
+/*
+  ZynAddSubFX - a software synthesizer
+ 
+  Filter.C - Filters, uses analog,formant,etc. filters
+  Copyright (C) 2002-2005 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
+
+*/
+
+#include <math.h>
+#include <stdio.h>
+
+#include "Filter.h"
+
+Filter::Filter(FilterParams *pars){
+    unsigned char Ftype=pars->Ptype;
+    unsigned char Fstages=pars->Pstages;
+    
+    category=pars->Pcategory;
+    
+    switch (category) {
+	case 1:filter=new FormantFilter(pars);
+		break;
+	case 2:filter=new SVFilter(Ftype,1000.0,pars->getq(),Fstages);
+	       filter->outgain=dB2rap(pars->getgain());		
+	       if (filter->outgain>1.0) filter->outgain=sqrt(filter->outgain);
+		break;
+	default:filter=new AnalogFilter(Ftype,1000.0,pars->getq(),Fstages);
+		if ((Ftype>=6)&&(Ftype<=8)) filter->setgain(pars->getgain());
+		    else filter->outgain=dB2rap(pars->getgain());		
+		break;
+    };
+};
+
+Filter::~Filter(){
+    delete (filter);
+};
+
+void Filter::filterout(REALTYPE *smp){
+    filter->filterout(smp);
+};
+
+void Filter::setfreq(REALTYPE frequency){
+    filter->setfreq(frequency);
+};
+
+void Filter::setfreq_and_q(REALTYPE frequency,REALTYPE q_){
+    filter->setfreq_and_q(frequency,q_);
+};
+
+void Filter::setq(REALTYPE q_){
+    filter->setq(q_);
+};
+
+REALTYPE Filter::getrealfreq(REALTYPE freqpitch){
+    if ((category==0)||(category==2)) return(pow(2.0,freqpitch+9.96578428));//log2(1000)=9.95748
+	else return(freqpitch);
+};
+