SAPI 5. SSML provides the ability to markup voice characteristics, speed, volume, pitch, emphasis, and pronunciation, so that developers can make TTS sound more natural in their applications. This makes it easier for applications to consume recognition results, as well as empowering grammar authors to provide a full spectrum of possible utterances without burdening the developer with the interpretation task.
In addition to the annotation of SRGS, SAPI also provides results that contain not only the recognized text but also the semantic information as a hierarchy of name-value pairs.
Skip to main content. This browser is no longer supported. Download Microsoft Edge More info. Contents Exit focus mode. In this article. This synthesis markup sapi. The IspVoice::Speak method can operate either synchronously return only when completely finished speaking or asynchronously return immediately and speak as a background process. For TTS, events are mostly used for synchronizing to the output speech.
Applications can sync to real-time actions as they occur such as word boundaries, phoneme or viseme mouth animation boundaries or application custom bookmarks.
Like the ISpVoice, it is an ISpEventSource, which means that it is the speech application's vehicle for receiving notifications for the requested speech recognition events.
An application has the choice of two different types of speech recognition engines ISpRecognizer. A shared recognizer that could possibly be shared with other speech recognition applications is recommended for most speech applications.
For large server applications that would run alone on a system, and for which performance is key, an InProc speech recognition engine is more appropriate. The next step is to set up notifications for events the application is interested in. Finally, a speech application must create, load, and activate an ISpRecoGrammar , which essentially indicates what type of utterances to recognize, i.
An ISpRecognizer, whether shared or InProc, can have multiple ISpRecoContexts associated with it, and each one can be notified in its own way of events pertaining to it.
0コメント