windowfilterview.h

数字信号处理实验

// windowFilterView.h : interface of the CWindowFilterView class
//
/////////////////////////////////////////////////////////////////////////////

#if !defined(AFX_WINDOWFILTERVIEW_H__3FE63E22_94F3_4A35_88CF_283A15711322__INCLUDED_)
#define AFX_WINDOWFILTERVIEW_H__3FE63E22_94F3_4A35_88CF_283A15711322__INCLUDED_

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


class CWindowFilterView : public CFormView
{
protected: // create from serialization only
	CWindowFilterView();
	DECLARE_DYNCREATE(CWindowFilterView)

public:
	//{{AFX_DATA(CWindowFilterView)
	enum { IDD = IDD_WINDOWFILTER_FORM };
	int		m_WindowLength;

	float	m_WcLow;
	float	m_WcHigh;
	float	m_bety;
	//}}AFX_DATA

// Attributes
public:
	CWindowFilterDoc* GetDocument();

// Operations
public:

// Overrides
	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CWindowFilterView)
	public:
	virtual BOOL PreCreateWindow(CREATESTRUCT& cs);
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	virtual void OnInitialUpdate(); // called first time after construct
	virtual BOOL OnPreparePrinting(CPrintInfo* pInfo);
	virtual void OnBeginPrinting(CDC* pDC, CPrintInfo* pInfo);
	virtual void OnEndPrinting(CDC* pDC, CPrintInfo* pInfo);
	virtual void OnPrint(CDC* pDC, CPrintInfo* pInfo);
	virtual void OnDraw(CDC* pDC);
	//}}AFX_VIRTUAL

// Implementation
public:
	void CreateSample(float *real, float *imag, int n, float wc);
	void CreateHd(float *real, float *imag, int n, float wc);	
	void CreateKaiser(float *real, float *imag, int n, float beta);
	void CreateBlackman(float *real, float *imag, int n);
	void CreateHamming(float *real, float *imag, int n);
	void CreateHanning(float *real, float *imag, int n);
	void CreateTriang(float *real, float *imag, int n);
	void CreateRect(float *real, float *imag, int n);
	float ino(float x);
	float mymax(float *a, int n);
	int ibitr(int j, int count);
	//返回值为FFT的实际长度
	int CreateFFT(float *Xreal, float *Ximag, float *xreal, float *ximag, int n);
	void CreateIFFT(float *Xreal, float *Ximag, float *xreal, float *ximag, int &n);
	void CreateArg(float *Xarg, float *Xreal, float *Ximag, int n);
	void CreateAbs(float *Xabs, float *Xreal, float *Ximag, int n);
	void Stem(int n, int length, float max,float *num);
	//未完成，半成品。
	void Plot(int n, int length, float max,float *num,float xmin, float xmax,
							 float ymin, float ymax);
	// 这次用到了这个函数
	void Plot(int n, int length, float max,float *num, float xmax, 
							 float ymin, float ymax);
	void Plot(int n, int length, float max,float *num,  
							 float ymin, float ymax);
	// 这次也用到了这个函数
	void Plot(int n, int length, float max,float *num, float xmax);
	void CleanPalette(int index);

public:
	void modify(void);
	bool m_bFirst;
//	bool m_First;
	bool m_bClean;
	void CreateHFun(int index, int n);
	void CreateWindowFun(int index, int length);
	float *pWindowReal;
	float *pWindowImag;
	float *pHdReal;
	float *pHdImag;
	float *pReal;
	float MaxReal;    //实际响应序列绝对值的最大值
	float *pImag;
	float MaxImag;    //实际响应序列绝对值的最大值
	float XReal[256];
	float MaxXReal;   //频率响应绝对值最大值
	float XImag[256];
	float MaxXImag;
	float XAbs[256];
	float MaxXAbs;
	float XArg[256];
	float MaxXArg;
	int m_iFilterType; //滤波器类型索引
	int m_iWindowType; //窗函数类型索引
	int m_FFTLength;   //实际的FFT变换床度索引
	virtual ~CWindowFilterView();
#ifdef _DEBUG
	virtual void AssertValid() const;
	virtual void Dump(CDumpContext& dc) const;
#endif

protected:

// Generated message map functions
protected:
	//{{AFX_MSG(CWindowFilterView)
	afx_msg void OnSelchangeWindowtipe();
	afx_msg void OnSelchangeFiltertype();
	afx_msg void OnBtnDraw();
	afx_msg void OnPaint();
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

#ifndef _DEBUG  // debug version in windowFilterView.cpp
inline CWindowFilterDoc* CWindowFilterView::GetDocument()
   { return (CWindowFilterDoc*)m_pDocument; }
#endif

/////////////////////////////////////////////////////////////////////////////

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

#endif // !defined(AFX_WINDOWFILTERVIEW_H__3FE63E22_94F3_4A35_88CF_283A15711322__INCLUDED_)