Conversation with C# Speech Library

Question

I have the following code using the Speech Recognition library:

var listen = new SpeechRecognitionEngine(); var reader = new Choices(File.ReadLines(@"C:\words.txt") listen.LoadGrammar(new Grammar(new GrammarBuilder(reader))); listen.SpeechRecognized += listen_SpeechRecognized; listen.SpeechRecognitionRejected += listen_SpeechRecognitionRejected; listen.SetInputToDefaultAudioDevice(); listen.RecognizeAsync(RecognizeMode.Multiple);

And I have an event listener like this...

static void listen_SpeechRecognized(object sender, SpeechRecognizedEventArgs e) { var talk = new SpeechSynthesizer(); if (e.Result.Text == "Search Stock Symbol") { talk.Speak("What symbol?"); //Do I have to create another event listener? //a Listener .. symbol = a.Result.Text //talk.Speak(GetQuote(symbol)) { }

Would I have to create an event listener for every portion of the "conversation"? Is there a better way if that is the case?

Example Conversation:

Me: Search Stock Symbol
Computer: What Symbol?
Me: AAPL
Computer: Apple is trading at ....

Nick Bull · Accepted Answer · 2016-08-07 02:12:03Z

3

Nope, just the one, then vary what you do depending on what text was received. In some code before:

 List<string> stockSymbols = new List<string>(); stockSymbols.Add("AAPL");

Then

 string lastSpeechInput; static void listen_SpeechRecognized(object sender, SpeechRecognizedEventArgs e) { var talk = new SpeechSynthesizer(); switch (e.Result.Text) { case "Search Stock Symbol": talk.Speak("What symbol?"); break; default: break; } if (stockSymbols.Contains(e.Result.Text) && lastSpeechInput == "Search Stock Symbol") { talk.Speak(getStockPrice(e.Result.Text); } lastSpeechInput = e.Result.Text; }

edited Aug 7, 2016 at 2:12

answered Aug 6, 2016 at 22:42

Nick Bull

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4 Comments

some random dude Over a year ago

Would this work if "AAPL" is not in dictionary.txt? I've tried your code and it doesn't appear to work. This is the code I tried: pastebin.com/Jpkz8Xu9

Nick Bull Over a year ago

Oh I see, fixed the lack of default in switch-case. Also note the made up function getStockPrice

some random dude Over a year ago

Yea i know the function is made up. But the problem with this is that e.Result.Text will always be == "Search Stock Symbol". This will only work if "Search Stock Symbol" is in the list.

Nick Bull Over a year ago

The question isn't how to iterate through a list and test for the presence of strings. That's just an example. I'm really only solving the question here, that's filler to show you what you do potentially do. What logic you do within that is up to you. The if statement will get fired if you say any word In the list (.Contains()) after saying search stock price.

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