zp_dspdoc.cpp

音频信号降采样程序 支持48k->8k 24k->8k 8k->1k 的降采样.实现方法,先做低通滤波,再做采样点抽取.低通滤波起使用67点FIR,系数由matlab使用窗函数法生成

// ZP_DspDoc.cpp : implementation of the C_ZP_DspDoc class
//

#include "stdafx.h"
#include "ZP_Dsp.h"

#include "ZP_DspDoc.h"
#include "ZP_Decim.h"

///自动读取文件，批处理
#include <windows.h>
#include <string.h>
#include <stdio.h>
#include <malloc.h>

#define _WIN32_WINNT 0x0501
///自动读取文件，批处理

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// C_ZP_DspDoc

IMPLEMENT_DYNCREATE(C_ZP_DspDoc, CDocument)

BEGIN_MESSAGE_MAP(C_ZP_DspDoc, CDocument)
	//{{AFX_MSG_MAP(C_ZP_DspDoc)
	ON_COMMAND(ID_ZP_Decim, OnZPDecim)
	ON_COMMAND(ID_FILE_OPEN, OnFileOpen)
	ON_COMMAND(ID_ZP_Decim1, OnZPDecim1)
	ON_COMMAND(ID_ZP_Decim2, OnZPDecim2)
	ON_COMMAND(ID_fix_head, Onfixhead)
	ON_COMMAND(ID_2to1_8_7, On2to187)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// C_ZP_DspDoc construction/destruction

C_ZP_DspDoc::C_ZP_DspDoc()
{
	// TODO: add one-time construction code here

}

C_ZP_DspDoc::~C_ZP_DspDoc()
{
}

BOOL C_ZP_DspDoc::OnNewDocument()
{
	if (!CDocument::OnNewDocument())
		return FALSE;

	// TODO: add reinitialization code here
	// (SDI documents will reuse this document)

	return TRUE;
}



/////////////////////////////////////////////////////////////////////////////
// C_ZP_DspDoc serialization

void C_ZP_DspDoc::Serialize(CArchive& ar)
{
	if (ar.IsStoring())
	{
		// TODO: add storing code here
	}
	else
	{
		// TODO: add loading code here
	}
}

/////////////////////////////////////////////////////////////////////////////
// C_ZP_DspDoc diagnostics

#ifdef _DEBUG
void C_ZP_DspDoc::AssertValid() const
{
	CDocument::AssertValid();
}

void C_ZP_DspDoc::Dump(CDumpContext& dc) const
{
	CDocument::Dump(dc);
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// C_ZP_DspDoc commands

void C_ZP_DspDoc::OnZPDecim() 
{
	// TODO: Add your command handler code here
	TRACE("begin\n");
	CZP_Decim A;

	CreateDirectory("48kTo8k",NULL);//新建文件夹


   WIN32_FIND_DATA FindFileData;
   HANDLE hFind = INVALID_HANDLE_VALUE;
   char DirSpec[MAX_PATH] = "*.wav";  // directory specification
   char * file_seq[2048];
   int i=0,file_num;
   DWORD dwError;

   hFind = FindFirstFile(DirSpec, &FindFileData);

   if (hFind == INVALID_HANDLE_VALUE) 
   {
      TRACE("Invalid file handle. Error is %u\n", GetLastError());
   } 
   else 
   {
      printf ("First file name is %s\n", FindFileData.cFileName);
	  {
	  file_seq[i] = (char*)malloc (_MAX_PATH);
	  
	  strcpy(file_seq[i],FindFileData.cFileName);i++;
	  }
      while (FindNextFile(hFind, &FindFileData) != 0) 
      {
         TRACE("Next file name is %s\n", FindFileData.cFileName);
		 	  {
			  file_seq[i] = (char* )malloc (_MAX_PATH);
			  
			  strcpy(file_seq[i],FindFileData.cFileName);i++;
			  }
      }
    
      dwError = GetLastError();
      FindClose(hFind);
      if (dwError != ERROR_NO_MORE_FILES) 
      {
         TRACE("FindNextFile error. Error is %u\n", dwError);
      }
   }
	TRACE("end\n");
	file_num = i;
	for(i=0;i<file_num;i++)
	{	  A.CZP_Decim_6_File(file_seq[i]);
			free(file_seq[i]);
	}

}

void C_ZP_DspDoc::OnFileOpen() 
{
	// TODO: Add your command handler code here

}

void C_ZP_DspDoc::OnZPDecim1() 
{
	// TODO: Add your command handler code here
	TRACE("begin\n");
	CZP_Decim B;



   WIN32_FIND_DATA FindFileData;
   HANDLE hFind = INVALID_HANDLE_VALUE;
   char DirSpec[MAX_PATH] = "*.wav";  // directory specification
   char * file_seq[2048];
   int i=0,file_num;
   DWORD dwError;
	CreateDirectory("8kTo1k",NULL);//新建文件夹

   hFind = FindFirstFile(DirSpec, &FindFileData);

   if (hFind == INVALID_HANDLE_VALUE) 
   {
      TRACE("Invalid file handle. Error is %u\n", GetLastError());
   } 
   else 
   {
      printf ("First file name is %s\n", FindFileData.cFileName);
	  {
	  file_seq[i] = (char*)malloc (_MAX_PATH);
	  
	  strcpy(file_seq[i],FindFileData.cFileName);i++;
	  }
      while (FindNextFile(hFind, &FindFileData) != 0) 
      {
         TRACE("Next file name is %s\n", FindFileData.cFileName);
		 	  {
			  file_seq[i] = (char* )malloc (_MAX_PATH);
			  
			  strcpy(file_seq[i],FindFileData.cFileName);i++;
			  }
      }
    
      dwError = GetLastError();
      FindClose(hFind);
      if (dwError != ERROR_NO_MORE_FILES) 
      {
         TRACE("FindNextFile error. Error is %u\n", dwError);
      }
   }
	TRACE("end\n");
	file_num = i;
	for(i=0;i<file_num;i++)
	{	  B.CZP_Decim_8_File(file_seq[i]);
			free(file_seq[i]);
	}

}

void C_ZP_DspDoc::OnZPDecim2() 
{
	// TODO: Add your command handler code here
		TRACE("begin\n");
	CZP_Decim C;



   WIN32_FIND_DATA FindFileData;
   HANDLE hFind = INVALID_HANDLE_VALUE;
   char DirSpec[MAX_PATH] = "*.wav";  // directory specification
   char * file_seq[2048];
   int i=0,file_num;
   DWORD dwError;
	CreateDirectory("24kTo8k",NULL);//新建文件夹

   hFind = FindFirstFile(DirSpec, &FindFileData);

   if (hFind == INVALID_HANDLE_VALUE) 
   {
      TRACE("Invalid file handle. Error is %u\n", GetLastError());
   } 
   else 
   {
      printf ("First file name is %s\n", FindFileData.cFileName);
	  {
	  file_seq[i] = (char*)malloc (_MAX_PATH);
	  
	  strcpy(file_seq[i],FindFileData.cFileName);i++;
	  }
      while (FindNextFile(hFind, &FindFileData) != 0) 
      {
         TRACE("Next file name is %s\n", FindFileData.cFileName);
		 	  {
			  file_seq[i] = (char* )malloc (_MAX_PATH);
			  
			  strcpy(file_seq[i],FindFileData.cFileName);i++;
			  }
      }
    
      dwError = GetLastError();
      FindClose(hFind);
      if (dwError != ERROR_NO_MORE_FILES) 
      {
         TRACE("FindNextFile error. Error is %u\n", dwError);
      }
   }
	TRACE("end\n");
	file_num = i;
	for(i=0;i<file_num;i++)
	{	  C.CZP_Decim_3_File(file_seq[i]);
			free(file_seq[i]);
	}
}

void C_ZP_DspDoc::Onfixhead() 
{
	// TODO: Add your command handler code here
		CZP_Decim D;
   WIN32_FIND_DATA FindFileData;
   HANDLE hFind = INVALID_HANDLE_VALUE;
   char DirSpec[MAX_PATH] = "*.wav";  // directory specification
   char * file_seq[2048];
   int i=0,file_num;
   DWORD dwError;
	CreateDirectory("fix",NULL);//新建文件夹

   hFind = FindFirstFile(DirSpec, &FindFileData);

   if (hFind == INVALID_HANDLE_VALUE) 
   {
      TRACE("Invalid file handle. Error is %u\n", GetLastError());
   } 
   else 
   {
      printf ("First file name is %s\n", FindFileData.cFileName);
	  {
	  file_seq[i] = (char*)malloc (_MAX_PATH);
	  
	  strcpy(file_seq[i],FindFileData.cFileName);i++;
	  }
      while (FindNextFile(hFind, &FindFileData) != 0) 
      {
         TRACE("Next file name is %s\n", FindFileData.cFileName);
		 	  {
			  file_seq[i] = (char* )malloc (_MAX_PATH);
			  
			  strcpy(file_seq[i],FindFileData.cFileName);i++;
			  }
      }
    
      dwError = GetLastError();
      FindClose(hFind);
      if (dwError != ERROR_NO_MORE_FILES) 
      {
         TRACE("FindNextFile error. Error is %u\n", dwError);
      }
   }
	TRACE("end\n");
	file_num = i;
	for(i=0;i<file_num;i++)
	{	  D.Cfix_head(file_seq[i]);
			free(file_seq[i]);
	}
}

void C_ZP_DspDoc::On2to187() 
{
	// TODO: Add your command handler code here
	CZP_Decim E;
   WIN32_FIND_DATA FindFileData;
   HANDLE hFind = INVALID_HANDLE_VALUE;
   char DirSpec[MAX_PATH] = "*.wav";  // directory specification
   char * file_seq[2048];
   int i=0,file_num;
   DWORD dwError;
	CreateDirectory("fix",NULL);//新建文件夹

   hFind = FindFirstFile(DirSpec, &FindFileData);

   if (hFind == INVALID_HANDLE_VALUE) 
   {
      TRACE("Invalid file handle. Error is %u\n", GetLastError());
   } 
   else 
   {
      printf ("First file name is %s\n", FindFileData.cFileName);
	  {
	  file_seq[i] = (char*)malloc (_MAX_PATH);
	  
	  strcpy(file_seq[i],FindFileData.cFileName);i++;
	  }
      while (FindNextFile(hFind, &FindFileData) != 0) 
      {
         TRACE("Next file name is %s\n", FindFileData.cFileName);
		 	  {
			  file_seq[i] = (char* )malloc (_MAX_PATH);
			  
			  strcpy(file_seq[i],FindFileData.cFileName);i++;
			  }
      }
    
      dwError = GetLastError();
      FindClose(hFind);
      if (dwError != ERROR_NO_MORE_FILES) 
      {
         TRACE("FindNextFile error. Error is %u\n", dwError);
      }
   }
	TRACE("end\n");
	file_num = i;
	for(i=0;i<file_num;)
	{	  E.C2to187(file_seq[i]);
			free(file_seq[i++]);
			free(file_seq[i++]);
			free(file_seq[i++]);free(file_seq[i++]);
			free(file_seq[i++]);free(file_seq[i++]);

	}
}