MitRegFilter.h

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/*
 * Copyright (C) 2013 David McGriffy, all rights reserved
 */

#ifndef CMITREGFILTER_H_INCLUDED
#define CMITREGFILTER_H_INCLUDED

#include "IIRFilter.h"

class CMitRegFilter :
    public CIIRFilter
{
public:
    CMitRegFilter(void);                                        
    ~CMitRegFilter(void);                                       
    void setSamplingRate(float sr);                             
    void setParameters(float freq, float width, float gain);    
    void doFilter(float *node, long sampleFrames);              
protected:
    void init();
    void updateCoefficients();
    
    float m_freq, m_width, m_gain;
    double a0, a1, a2, b0, b1, b2, s0, s1, K;
    double a1z, a2z, b0z, b1z, Kz;
    bool firstTime;
};

#endif