德尔福SAPI文字转语音

首先：这不是 Delphi和SAPI 的重复。我在Delphi中的SAPI主题有一个具体的问题。

First of all: this is not a duplicate of Delphi and SAPI. I have a specific problem with the "SAPI in Delphi" subject.

我在Delphi 2009中使用了优秀的Import Type-Library指南，以获得组件中的TSpVoice组件调色板这很好。使用

I have used the excellent Import Type-Library guide in Delphi 2009 to get a TSpVoice component in the component palette. This works great. With

var
  SpVoice: TSpVoice;

我可以写

SpVoice.Speak('This is an example.', 1);

获取异步音频输出。

第一个问题

First question

根据文档，我可以写

SpVoice.Speak('This is an example.', 0);

获取同步音频输出，而是得到一个EZeroDivide异常。为什么？

to get synchronous audio output, but instead I get an EZeroDivide exception. Why's that?

第二个问题

Second question

但是更重要的是，我想能够动态创建SpVoice对象（我认为这称为晚期绑定SpVoice对象），部分原因是我的应用程序的所有会话中只有很小一部分将使用它，部分原因是我不想假定在最终用户的系统上存在SAPI服务器。

But more importantly, I would like to be able to create the SpVoice object dynamically (I think this is called to "late-bind" the SpVoice object), partly because only a very small fraction of all sessions of my app will use it, and partly because I do not want to assume the existance of the SAPI server on the end-user's system.

为此，我尝试了

procedure TForm1.FormClick(Sender: TObject);
var
  SpVoice: Variant;
begin
  SpVoice := CreateOleObject('SAPI.SpVoice');
  SpVoice.Speak('this is a test', 0);
end;

这显然什么都不做！ （用1替换0给出了EZeroDivide异常。）

which apparently does nothing at all! (Replacing the 0 with 1 gives me the EZeroDivide exception.)

I am rather new to COM/OLE automation. I am sorry for any ignorance or stupidity shown by me in this post...

每个人遇到同样问题的好处，François解释说，SAPI / Windows中有一个错误（某些不兼容的地方），这使得以下代码提高了EZeroDivide异常：

For the benefit of everyone encountering the same problem as I did, the video by François explained there is a bug in SAPI/Windows (some incompatibility somewhere), which makes the following code raise the EZeroDivide exception:

procedure TForm1.FormClick(Sender: TObject);
var
  SpVoice: variant;
begin
  SpVoice := CreateOleObject('SAPI.SpVoice');
  SpVoice.Speak('This is a text.');
end;

视频提供的解决方案是更改FPU控制字：

The solution, as presented by the video, is to alter the FPU control word:

procedure TForm1.FormClick(Sender: TObject);
var
  SpVoice: variant;
  SavedCW: Word;
begin
  SpVoice := CreateOleObject('SAPI.SpVoice');
  SavedCW := Get8087CW;
  Set8087CW(SavedCW or $4);
  SpVoice.Speak('This is a text.');
  Set8087CW(SavedCW);
end;

此外，如果要异步播放声音，则必须确保玩家不会超出范围！

And, in addition, if you want to play a sound asynchronously, then you have to make sure that the player doesn't go out of scope!