这些语法在识别引擎中是活动的，它们定义当对音频进行了解码和分析后该引擎返回给应用程序的词集。
These grammars are active in the recognition engine and define the set of words the engine returns to the application (the voice browser) when the audio is decoded and analyzed.
为了检测对特定的一个编解码的支持，可以向canplaytype函数传递一个识别字符串。
To check for support for a particular codec, you can pass an identifying string to the canPlayType function.
视频解码模块采用对视频流数据识别的方法获得图像数据，然后送入帧存储器。
Video decode module used the method of identification the digital video data stream to acquire the image data and then stored them in the frame memory.
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