namespace Music
{
+ /**************************************************************************
+ * Parks-McClellan algorithm for FIR filter design (C version)
+ *-------------------------------------------------
+ * Copyright (c) 1995,1998 Jake Janovetz (janovetz@uiuc.edu)
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ *************************************************************************/
+
+ #define BANDPASS 1
+ #define DIFFERENTIATOR 2
+ #define HILBERT 3
+
+ #define NEGATIVE 0
+ #define POSITIVE 1
+
+// #define Pi 3.1415926535897932
+// #define Pi2 6.2831853071795865
+
+ #define GRIDDENSITY 16
+ #define MAXITERATIONS 40
+
+ /* Function prototype for remez() - the only function that should need be
+ * called from external code
+ */
+ void remez(double h[], int numtaps,
+ int numband, double bands[], double des[], double weight[],
+ int type);
+
std::vector<double> fir1_lowpass(int n, double cutoff);
std::vector<double> fir1_highpass(int n, double cutoff);
std::vector<double> fir1_bandpass(int n, double low_cutoff, double high_cutoff);
public:
FIRRTFilter(){m_imp_res=std::vector<double>(1, 1.0);}
FIRRTFilter(std::vector<double>& imp_res);
- void setImpulseResponse(std::vector<double>& imp_res) {m_imp_res=imp_res;}
+ void setImpulseResponse(std::vector<double> imp_res) {m_imp_res=imp_res;}
virtual int getLength() {return m_imp_res.size();}