When speaking specific data types it can help to tell the text-to-speech (TTS) system of the voice browser the type of information to convert into speech.
当用户说出特定的数据类型时，该信息会将要转换为语音的信息类型告诉语音浏览器的TTS系统。
2
The optional fields contain the exact wording to be played back using Text-to-Speech (TTS) or an audio file.
可选区域包括将要使用文本-至-语音(TTS)来回放的准确用语或一个语音文件。
3
You can use recorded sounds for effects and, in this case, I'm using synthesized voices with the text-to-speech (TTS) engine Festival.