fft.h

快速傅立叶算法

// FFT.h: interface for the CFFT class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_FFT_H__3CAAACB7_9164_4868_ABC6_03CDD28D74EE__INCLUDED_)
#define AFX_FFT_H__3CAAACB7_9164_4868_ABC6_03CDD28D74EE__INCLUDED_

#include "StdAfx.h"	// Added by ClassView
#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

class CFFT  
{
public:
	double mabs(complex a);
	void RealFFT( double realData[], int length , int sign );
	complex cexp(complex a);
	void b2fft( complex x[], int n, int sign );
	CFFT();
	virtual ~CFFT();
	complex *pComplex;

};

#endif // !defined(AFX_FFT_H__3CAAACB7_9164_4868_ABC6_03CDD28D74EE__INCLUDED_)