转载：http://blog.csdn.net/yincheng01/article/details/3584630
语音类
1)在构造语音类之前，必须先设置好工程环境：
a、从微软官方网站下载windows speech sdk并安装，然后在Visual Studio 6.0中进行相关设置，在Project Setings选项的C++选项卡的“分类：预处理器”添加“,__WIN32_DCOM”(为预先初始化COM组件成功)；
b、将预处理头文件选项选中“自动使用预补偿页眉”；
c、在常规选项卡中选择“实用MFC静态连接库”；
入图：（一）
2)封装语音类
由于采用面向对象的编程理念，借助UML（Unified Modeling Language统一建模语言）构造CSPEECH语音类如下
CSPEECH类
+ void InitSR(); //初始化语音
+void RecoEvent();//识别命令函数
+BOOL b_initSR;
+BOOL b_Cmd_Grammar;
//3个语音接口
+CComPtr m_cpRecocontxt;
+CComPtr m_cpRecoGrammar;
+CComPtr m_cpRecoEngine;
然后开始添加语音类，需要注意的是在定义语音类的头文件中，包含〈sphelper.h〉并且自定义语音识别消息和类型
#define GID_CMD_GR 333333
#define WM_RECOEVENT WM_USER+102
剩下来就是对cpp文件的函数initSR()和RecoEvent()补充函数体
3）具体见下面代码：
（1）void CSpeech::initSR()
{
HRESULT hr=S_OK;
hr=m_cpRecoEngine.CoCreateInstance(CLSID_SpInprocRecognizer);//创建识别引擎COM实例
if(SUCCEEDED(hr))
{
hr =m_cpRecoEngine->CreateRecoContext(&m_cpRecoCtxt );//创建识别上下文
}
else
MessageBox(hWnd,"error1","error",S_OK);
if(SUCCEEDED(hr))
{
hr = m_cpRecoCtxt->SetNotifyWindowMessage(hWnd, WM_RECOEVENT, 0, 0 );
}//消息机制设置，使计算机时刻监听语音消息
else
MessageBox(hWnd,"error2","error",S_OK);
if (SUCCEEDED(hr))
{
ULONGLONG ullMyEvents = SPFEI(SPEI_RECOGNITION) | SPFEI(SPEI_HYPOTHESIS);
hr = m_cpRecoCtxt->SetInterest(ullMyEvents, ullMyEvents);
}
else
MessageBox(hWnd,"error3","error",S_OK);
//设置默认的音频
CComPtr m_cpAudio;
hr=SpCreateDefaultObjectFromCategoryId(SPCAT_AUDIOIN,&m_cpAudio);//建立默认的音频输入对象
hr=m_cpRecoEngine->SetInput(m_cpAudio,TRUE);//设置识别引擎输入源
hr=m_cpRecoCtxt->CreateGrammar(GID_CMD_GR,&m_cpCmdGrammar);//创建命令语法
b_Cmd_Grammar=TRUE;
if(FAILED(hr))
{
MessageBox(hWnd,"error 4","error",S_OK);
}
hr=m_cpCmdGrammar->LoadCmdFromResource(NULL,MAKEINTRESOURCEW(IDR_CMDCTRL),L"SRGRAMMAR",MAKELANGID(LANG_NEUTRAL,SUBLANG_NEUTRAL), SPLO_DYNAMIC);//加载命令语法文件
if(FAILED(hr))
{
MessageBox(hWnd,"error5","error",S_OK);
}
b_initSR=TRUE;
}
（2）BOOL CSpeech::RecoEvent()
{
USES_CONVERSION;
CSpEvent event;
while(event.GetFrom(m_cpRecoCtxt)==S_OK)
{
switch(event.eEventId)
{
case SPEI_RECOGNITION:
{
static const WCHAR wszUnrecognized[]=L"";
CSpDynamicString dstrText;
if(FAILED(event.RecoResult()->GetText(SP_GETWHOLEPHRASE,SP_GETWHOLEPHRASE,TRUE,&dstrText,NULL)))
{
dstrText=wszUnrecognized;
}
dstrText.CopyToBSTR(&SRout);
Recstring.Empty();
Recstring=SRout;
if(b_Cmd_Grammar)
{
if(Recstring=="左")
{
ISpVoice *pVoice=NULL;
if(FAILED(CoInitialize(NULL)))
{
MessageBox(hWnd,"Error to initialize COM","error",S_OK);
return FALSE;
}
HRESULT hr=CoCreateInstance(CLSID_SpVoice,NULL,CLSCTX_ALL,IID_ISpVoice,(void**)&pVoice);
if(SUCCEEDED(hr))
{
hr=pVoice->Speak(L"左转",0,NULL);
pVoice->Release();
pVoice=NULL;
}
CoUninitialize();
m_OpenGL->m_baiscobj->LEFT=1;
return TRUE ;
}
if(Recstring=="向下走")
{
ISpVoice *pVoice=NULL;
if(FAILED(CoInitialize(NULL)))
{
MessageBox(hWnd,"Error to initialize COM","error",S_OK);
return FALSE;
}
HRESULT hr=CoCreateInstance(CLSID_SpVoice,NULL,CLSCTX_ALL,IID_ISpVoice,(void**)&pVoice);
if(SUCCEEDED(hr))
{
hr=pVoice->Speak(L"开始后退",0,NULL);
pVoice->Release();
pVoice=NULL;
}
CoUninitialize();
m_OpenGL->m_baiscobj->BACK=1;
return TRUE ;
}
if(Recstring=="最小化")
{
ISpVoice *pVoice=NULL;
if(FAILED(CoInitialize(NULL)))
{
MessageBox(hWnd,"Error to initialize COM","error",S_OK);
return FALSE;
}
HRESULT hr=CoCreateInstance(CLSID_SpVoice,NULL,CLSCTX_ALL,IID_ISpVoice,(void**)&pVoice);
if(SUCCEEDED(hr))
{
hr=pVoice->Speak(L"最小化",0,NULL);
pVoice->Release();
pVoice=NULL;
}
CoUninitialize();
SendMessage(hWnd,WM_SYSCOMMAND, SC_MINIMIZE, MAKELPARAM(0, 0));
return TRUE;
}
if(Recstring=="右")
{
ISpVoice *pVoice=NULL;
if(FAILED(CoInitialize(NULL)))
{
MessageBox(hWnd,"Error to initialize COM","error",S_OK);
return FALSE;
}
HRESULT hr=CoCreateInstance(CLSID_SpVoice,NULL,CLSCTX_ALL,IID_ISpVoice,(void**)&pVoice);
if(SUCCEEDED(hr))
{
hr=pVoice->Speak(L"开始右转",0,NULL);
pVoice->Release();
pVoice=NULL;
}
CoUninitialize();
m_OpenGL->m_baiscobj->RIGHT=1;
return TRUE ;
}
if(Recstring=="停下来")
{
ISpVoice *pVoice=NULL;
if(FAILED(CoInitialize(NULL)))
{
MessageBox(hWnd,"Error to initialize COM","error",S_OK);
return FALSE;
}
HRESULT hr=CoCreateInstance(CLSID_SpVoice,NULL,CLSCTX_ALL,IID_ISpVoice,(void**)&pVoice);
if(SUCCEEDED(hr))
{
hr=pVoice->Speak(L"动作开始了",0,NULL);
pVoice->Release();
pVoice=NULL;
}
CoUninitialize();
m_OpenGL->m_baiscobj->Move=0;
m_OpenGL->m_baiscobj->BACK=0;
m_OpenGL->m_baiscobj->LEFT=0;
m_OpenGL->m_baiscobj->RIGHT=0;
return TRUE ;
}
if(Recstring=="跑步")
{
ISpVoice *pVoice=NULL;
if(FAILED(CoInitialize(NULL)))
{
MessageBox(hWnd,"Error to initialize COM","error",S_OK);
return FALSE;
}
HRESULT hr=CoCreateInstance(CLSID_SpVoice,NULL,CLSCTX_ALL,IID_ISpVoice,(void**)&pVoice);
if(SUCCEEDED(hr))
{
hr=pVoice->Speak(L"动作开始了",0,NULL);
pVoice->Release();
pVoice=NULL;
}
CoUninitialize();
m_OpenGL->m_baiscobj->Move=1;
return TRUE ;
}
if(Recstring=="退出")
{
m_OpenGL->CleanUp(); // 结束处理
PostQuitMessage(0);
return TRUE;
}
}
}
}
}return TRUE;
}
要注意的是RecoEvent（）必须能处理人物、摄像头的漫游，所以在人物、摄像机类的行为函数中添加了控制变量Move、BACK、LEFT、RIGHT;并附了初值1，当在行为函数中为1时行为函数体执行，所以也必须
#include "OpenGL.h"
#include "baiscobj.h"
其间我们借助于指针变量，巧妙的使语音能控制行为，却不影响动画的刷新，但不足的是由于opengl动画md2模型的不能导入成功，使踢球，跳木箱等功能函数没有完成，所以只要行为函数出来，可通过上述同样方法实现语音控制。
4）如何在winmain()函数中执行语音程序？
首先包含语音头文件〈sapi.h〉
接着（#define CSpeech speech）定义语音类对象
INT WINAPI WinMain(HINSTANCE hInst,HINSTANCE,LPSTR,INT )// WinMain程序入口
{
::CoInitializeEx(NULL,COINIT_APARTMENTTHREADED);//初始化COM
……
char cc[]="tml";
WNDCLASSEX wc = { sizeof(WNDCLASSEX), CS_CLASSDC, MsgProc, 0L, 0L,
GetModuleHandle(NULL), NULL, NULL, NULL, (LPCTSTR)IDR_MENU1,
cc, NULL };
RegisterClassEx( &wc );
m_OpenGL=new OpenGL();//
hWnd = CreateWindowEx(NULL,cc,"智能精灵键盘(↑进↓退→右←左UP仰DOWM俯)",
dwStyle|WS_CLIPCHILDREN|WS_CLIPSIBLINGS,nX,nY,Width, Height,NULL,NULL,hInst,NULL); // 创建窗口
ShowWindow( hWnd, SW_SHOWDEFAULT ); // 显示窗口
UpdateWindow( hWnd ); // 刷新窗口
speech.b_Cmd_Grammar=FALSE;
speech.initSR();
GameLoop(); // 进入消息循环
return 0;
}
通过speech.initSR(),执行语音的初始化，为了设置一个简单的语音识别开关，简单的添加一个任务栏，只有语音这一个菜单资源，然后利用消息机制，在消息处理函数里Switch(message)里添加：
case WM_COMMAND:
switch(LOWORD(wParam))
{
case IDM_SPEECH:speech.startcmd();
}
return 0;break;
即当单击语音菜单时，则使语音功能完全激活，下面是这个函数的实体：
void CSpeech::startcmd()
{
if(b_initSR)
{
HRESULT hr=m_cpCmdGrammar->SetRuleState(NULL,NULL,SPRS_ACTIVE);
ISpVoice *pVoice=NULL;
if(FAILED(CoInitialize(NULL)))
{
MessageBox(hWnd,"Error to initialize COM","error",S_OK);
return ;
}
hr=CoCreateInstance(CLSID_SpVoice,NULL,CLSCTX_ALL,IID_ISpVoice,(void**)&pVoice);
if(SUCCEEDED(hr))
{
hr=pVoice->Speak(L"语法已经激活",0,NULL);
pVoice->Release();
pVoice=NULL;
}
CoUninitialize();
}
}
5）在所有的工作完成之前，还必须先在项目工程下添加XML语法文件，通过initSR（）中的LoadCmdFromResource（）函数加载；XML文件可通过以记事本形式打开编辑。具体如下：
---
下
左
右
向上走
向下走
跳
停下来
跑步
识别
语音
还原
文件
踢球