digitalfilter.h

利用intel dsplib 库函数进行特定2FSK信号（需传导频）解调

// DigitalFilter.h: interface for the CDigitalFilter class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_DIGITALFILTER_H__6D3E9B1D_31C9_44DF_BA69_E6DB95E5DFB9__INCLUDED_)
#define AFX_DIGITALFILTER_H__6D3E9B1D_31C9_44DF_BA69_E6DB95E5DFB9__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
#define nsp_UsesAll
#include ".\Include\nsp.h"
#include "math.h"

class CDigitalFilter  
{
public:
	CDigitalFilter();
	virtual ~CDigitalFilter();

	public:
		
		void   BandpassFilter0Init(double LowFre,double UpFre,double SampleFre);
	    void   BandpassFilter0(double *InputData,double *OutputData,int ItemNumber);
		void   Filter0Free();

	
		void   BandpassFilter1Init(double LowFre,double UpFre,double SampleFre);
		void   BandpassFilter1(double *InputData,double *OutputData,int ItemNumber);
		void   Filter1Free();


		void   BandpassFilter2Init(double LowFre,double UpFre,double SampleFre);
		void   BandpassFilter2(double *InputData,double *OutputData,int ItemNumber);
		void   Filter2Free();


protected:
	NSPFirState nspFirstate0,nspFirstate1,nspFirstate2;

};

#endif // !defined(AFX_DIGITALFILTER_H__6D3E9B1D_31C9_44DF_BA69_E6DB95E5DFB9__INCLUDED_)