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    <p>Let me make sure I understand, you want a phrase to set apart commands to the system, like "butler" or "Siri". So, you'll say "Butler, turn on TV". You can build this into your grammar.</p> <p>Here is an example of a simple grammar that requires an opening phrase before it recognizes a command. It uses semantic results to help you understand what was said. In this case the user must say "Open" or "Please open" or "can you open"</p> <pre><code> private Grammar CreateTestGrammar() { // item Choices item = new Choices(); SemanticResultValue itemSRV; itemSRV = new SemanticResultValue("I E", "explorer"); item.Add(itemSRV); itemSRV = new SemanticResultValue("explorer", "explorer"); item.Add(itemSRV); itemSRV = new SemanticResultValue("firefox", "firefox"); item.Add(itemSRV); itemSRV = new SemanticResultValue("mozilla", "firefox"); item.Add(itemSRV); itemSRV = new SemanticResultValue("chrome", "chrome"); item.Add(itemSRV); itemSRV = new SemanticResultValue("google chrome", "chrome"); item.Add(itemSRV); SemanticResultKey itemSemKey = new SemanticResultKey("item", item); //build the permutations of choices... GrammarBuilder gb = new GrammarBuilder(); gb.Append(itemSemKey); //now build the complete pattern... GrammarBuilder itemRequest = new GrammarBuilder(); //pre-amble "[I'd like] a" itemRequest.Append(new Choices("Can you open", "Open", "Please open")); itemRequest.Append(gb); Grammar TestGrammar = new Grammar(itemRequest); return TestGrammar; } </code></pre> <p>You can then process the speech with something like:</p> <pre><code>RecognitionResult result = myRecognizer.Recognize(); </code></pre> <p>and check for semantic results like:</p> <pre><code>if(result.Semantics.ContainsKey("item")) { string s = (string)result.Semantics["item"].Value; } </code></pre>
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    1. POIssue distinguishing commands from normal speech with SAPI
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    1. USMichael Levy
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    1. POIssue distinguishing commands from normal speech with SAPI
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    1. COThis is more-or-less what I have currently, with the exception that I've just been using a Hashtable instead of a semantic result key-value pair. So if I'm reading your answer correctly, the key mistake that I've made is constructing my phrase in the same GrammarBuilder as my command choices. Is this correct?
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      1. USOctavianus
    2. COYou don't have to use the SemanticResultValue. I just had the code sample available to copy-paste. But, I think the answer is you want to add two things to your grammar: the "wake up" expression, then add the list of choices for your available commands. Otherwise, what is in your dictionary? If the wakeup expression is just one child in your dictionary, I don't think you'll get the results you want.
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      1. USMichael Levy
    3. COhttp://msdn.microsoft.com/en-us/library/hh361662.aspx has a good example. The phrase "I want to fly from" is required by the grammar. Then a list of valid choice is added after the required phrase.
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