LowPass.h

Go to the documentation of this file.

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

#ifndef Lowpass_H_INCLUDED
#define Lowpass_H_INCLUDED

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#include "IIRFilter.h"

class CLowPassFilter : public CIIRFilter  
{
public:
    CLowPassFilter();           
    CLowPassFilter(float f1);   
    virtual ~CLowPassFilter();  
    void setSamplingRate(float sr);     
    void setFreqs(float f1);            
    void doFilter(float *node, long sampleFrames);  
protected:
    void init();
    void updateCoefficients();

    float m_fF1;
    double a0,a1,a2,b0,b1,b2;
    double x1,x2,y1,y2;
};

#endif