滤波器设计dlg.h

一个关于滤波器设计的小程序

// 滤波器设计Dlg.h : header file
//

#if !defined(AFX_DLG_H__6EB7ED7D_C9C0_451E_9CBE_0005819980C4__INCLUDED_)
#define AFX_DLG_H__6EB7ED7D_C9C0_451E_9CBE_0005819980C4__INCLUDED_

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

/////////////////////////////////////////////////////////////////////////////
// CMyDlg dialog

class CMyDlg : public CDialog
{
// Construction
public:
	CMyDlg(CWnd* pParent = NULL);	// standard constructor
	void DrawScaleText(HDC hdc,int xfrom1, int xto1, int yfrom1, int yto1, int ycenter1);
	void draworiginalwave(HDC hdc, double sf,double sa,double nf,double na,int xfrom1, int xto1, int ycenter, int yto1);
	void Drawbackground(HDC hdc, int left, int up, int right, int down, int xfrom1, int xto1, int yfrom1, int yto1, int ycenter1);
	void BandPassFiltering(int N, double beta, double sf, double sa, double nf, double na);
    void BandReject(int N, double beta);
	void BandRejectFiltering(int N, double beta, double sf, double sa, double nf, double na);
	void drawfilteredwave(HDC hdc, double sf, double sa, double nf, double na, int xfrom1, int xto1, int ycenter, int yto1);
	void drawplusewave(HDC hdc, double sf, double sa, double nf, double na,int xfrom1, int xto1, int ycenter, int yto1);
	void DrawScaleFre(HDC hdc,int xfrom1, int xto1, int yfrom1, int yto1, int ycenter1);
	void HighPass(int N, double beta);
	void HighPassFiltering(int N, double beta,double sf, double sa, double nf, double na);
	void LowPass(int N, double beta);
	void LowPassFiltering(int N,double beta,double sf, double sa, double nf, double na);

	struct complex 
	{
	double x, y;
	};
	short int fft(long int N,complex *z);
	short int realfft(long int N,complex *z);
	void BandPass(int N, double beta);
	double kaiser(int n,int i, double beta);
	double bessel(double a);

	HDC hdc;		//Define the handle of device context  HDC Handle to a device context (DC). 
    CPen pen0,penk,pen2,penu1,penu2,pend1,pend2,penred;
	CRect r;
	HBITMAP hbit1,hbit2;
	HDC hdctmp1,hdctmp2;
	HANDLE horigimage;
	HANDLE hsignal;
	HANDLE hpluse,hpls;
	HANDLE hfilter;
	HANDLE horigdata;
	int datalength;
	double *lporigdata;
	complex *lpfftdata;
	CBrush cb;
	int analeng;
	double *lpsignal;
	double *lppluse,*lppls;
	double *lpfilter;

// Dialog Data
	//{{AFX_DATA(CMyDlg)
	enum { IDD = IDD_MY_DIALOG };
	double	m_downfre;
	double	m_pass;
	double	m_reject;
	double	m_upfre;
	BOOL	m_addnoise;
	int m_samplelen;
	int m_filtertype;
	double	m_band;
	double	m_fc;
	double	m_beta;
	double	m_noiseamp;
	double	m_noisefre;
	double	m_fl;
	double	m_fh;
	double	m_signalamp;
	double	m_signalfre;
		// NOTE: the ClassWizard will add data members here
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CMyDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);	// DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	HICON m_hIcon;

	// Generated message map functions
	//{{AFX_MSG(CMyDlg)
	virtual BOOL OnInitDialog();
	afx_msg void OnSysCommand(UINT nID, LPARAM lParam);
	afx_msg void OnPaint();
	afx_msg HCURSOR OnQueryDragIcon();
	afx_msg void OnBottonApply();
	afx_msg void OnCheckAddnoise();
	afx_msg void OnSelchangeComboSamplelen();
	afx_msg void OnButtonPluse();
	afx_msg void OnSelchangeComboFiltertype();
	afx_msg void OnChangeEditSignalfre();
	afx_msg void OnNoiseAmplitude();
	afx_msg void OnStaticSignalwave();
	afx_msg void OnStaticSignal();
	afx_msg void OnChangeEditDownfre();
	afx_msg void OnStaticRejection2();
	afx_msg void OnStaticFiltersignal();
	afx_msg void OnChangeEditNoisefre();
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_DLG_H__6EB7ED7D_C9C0_451E_9CBE_0005819980C4__INCLUDED_)