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//*************************************************************//
// HiPass.h : 1st order high pass filter //
// //
// Rory Walsh May 2003 //
// //
//*************************************************************//
#ifndef _HIPASS_H
#define _HIPASS_H
#include "LowPass.h"
class HiPass : public LoPass
{
protected:
public:
HiPass();
HiPass(float freq, SndObj* inObj, int vecsize=DEF_VECSIZE, float sr=DEF_SR);
~HiPass();
void SetFreq(float fr){
m_fr = fr;
double C = 2 - cos(2*PI*m_fr/m_sr);
m_b1 = C - sqrt((C*C) - 1);
m_a = 1 - m_b1;
}
void SetSr(float sr){
m_sr = sr;
double C = 2 - cos(2*PI*m_fr/m_sr);
m_b1 = C - sqrt((C*C) - 1);
m_a = 1 - m_b1;
}
int Set(char* mess, float value);
};
#endif
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