Hello World by Microsoft Speech SDK 5.1

    刚刚从 Microsoft 网站下栽了 Speech SDK 5.1 和中日文发声补丁，参考 Speech SDK文档写了几个小程序，尽管我也是刚刚接触 Speech若干小时的初学者，还是拿出来共享吧：

Speech SDK 采用 COM 的形式封装，和大多数COM对象一样，下面是一个似曾相识的初始化：

    CoInitialize(NULL);

    CLSIDFromProgID(L"SAPI.SpVoice", &CLSID_SpVoice);

    ISpVoice * pSpVoice = NULL;

    if (FAILED(CoCreateInstance(CLSID_SpVoice, NULL,

        CLSCTX_INPROC_SERVER, IID_ISpVoice, (void **)&pSpVoice)))

    {

        cout << "Failed to create instance of ISpVoice!" << endl;

        return -1;

    }

    现在我们用它来说 “Hello World”，非常简单：

pSpVoice->Speak(L"Hello World!", SPF_DEFAULT, NULL);

最后，清除这一切

pSpVoice->Release();

CoUninitialize();

很容易，是不是？下面我们稍微改变一下：

IEnumSpObjectTokens *pSpEnumTokens = NULL;

if (SUCCEEDED(SpEnumTokens(SPCAT_VOICES, L"language=409", NULL, &pSpEnumTokens)))

{

       ISpObjectToken *pSpToken = NULL;

       while (SUCCEEDED(pSpEnumTokens->Next(1, &pSpToken, NULL)) &&

              pSpToken != NULL)

       {

              pSpVoice->SetVoice(pSpToken);

              pSpVoice->Speak(L"Hello World!", SPF_DEFAULT, NULL);

              pSpToken->Release();

       }

       pSpEnumTokens->Release();

}

如果只需要一种 Voice，SpFindBestToken 更加方便：

ISpObjectToken * pSpObjectToken = NULL;

if (SUCCEEDED(SpFindBestToken(SPCAT_VOICES, L"gender=female",

       NULL, &pSpObjectToken)))

{

       pSpVoice->SetVoice(pSpObjectToken);

       pSpVoice->Speak(L"Hello World!", SPF_DEFAULT, NULL);

       pSpObjectToken->Release();

}

现在改为使用中文：

ISpObjectToken * pSpObjectToken = NULL;

if (SUCCEEDED(SpFindBestToken(SPCAT_VOICES, L"language=804",

       NULL, &pSpObjectToken)))

{

       pSpVoice->SetVoice(pSpObjectToken);

       pSpVoice->Speak(L"世界你好！", SPF_DEFAULT, NULL);

       pSpObjectToken->Release();

}

ISpVoice::Speak 可以允许朗读的句子中包含 XML 标记，其实以上这一切用 XML 标记将变得十分简单：

pSpVoice->Speak(L"<lang langid=\"804\">世界你好！</lang>", SPF_DEFAULT, NULL);

    pSpVoice->Speak(L"<voice required=\"gender=female\">Hello World!</voice>", SPF_DEFAULT, NULL);

最后，以一段简单的报时结束这篇文章：

SYSTEMTIME st;

GetLocalTime(&st);

ISpObjectToken * pSpObjectToken = NULL;

if (SUCCEEDED(SpFindBestToken(SPCAT_VOICES, L"language=804", NULL, &pSpObjectToken)))

{

       pSpVoice->SetVoice(pSpObjectToken);

       WCHAR wsz[128];

       swprintf(wsz,

              L"现在是<context ID = \"CHS_Date_ymdhm\">%.4d-%.02d-%.2d %.2d:%.02d</context>",

              st.wYear, st.wMonth, st.wDay, st.wHour, st.wMinute);

       pSpVoice->Speak(wsz, SPF_IS_XML, NULL);

       pSpObjectToken->Release();

}

    ■ 到此为止，希望这篇文章能带给初学者一点启发。