Voice Recognition In .NET With SAPI 5.1?

Apr 7, 2012

I want to incorporate Voice Recognition in my program using SAPI 5.1. So I looked for a tutorial and found this:[URL]..I downloaded the SDK and I can't seem to find a .dll file to include in my program for the SpeechLib. Am I missing something?

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[Code]...

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[code]....

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I am half way there, it actually speaks, but there is no output of the visemes.

Here's the code example I am working from :[URL].. And below here is my actual code, which had to be modified a little.

[Code]...

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Here is the code:

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imports system.speech
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Public WithEvents recognizer As New System.Speech.Recognition.SpeechRecognitionEngine
Dim gram As New System.Speech.Recognition.DictationGrammar()

[code]....

gram is a DictationGrammar object. As it turns out, there are two grammar objects in SAPI 5.3. As you've probably already guessed, DictationGrammar is for spoken language and the normal grammar object is for simple grammar rules.

So basically, Load the grammar, set audio to the default input device and then start an Async recognize call. They have a blocking recognize call and one thing to note here is that it will turn itself off after each sucessful recognized phrase. Meaning that you have to recall Async recognize at the end of the GotSpeech sub if you want to keep picking up voice commands. As it stands, this will pick up one command and no more because it stops recognition.

One neat thing about the synthesis engine is that you can specify things like ".NET" to be said as "dot net" by Anna. Also, as it stands, the periods aren't said and so are pretty much useless. It acts just like the Vista Recognition engine also so if you spell out a word, Anna will spell it out too.In this example there is an undeclared variable named "cmd" that I fail to understand. What is the role of it and where does it obtain it's value from. I actually assume it should be the one to get the decoded\recognized text from the recognizer but not sure how that is achieved.

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I have done the recognition part with the default system large vocabulary but now just need to use my own vocabulary.

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