Vb.net voice recognition software

In SpeechRecognized it checks for start-stop first and toggles a Boolean field speechOn and uses this to determine whether to process other recognized speech. Similar you could have a single start keyword that enables recognizing commands, and following a recognized command you would set the boolean to false again and only the start word would be processed.

In short: one SpeechRecognitionEngine with multiple active grammars, where one of them is just the start command. What should happen if start word is detected, but no commands follow is up to you, but I would probably use a Date type field too and set speechOn to false if it took too long time between start and command.

Upvote 0 Downvote. Thanks for the info. Conceptually, that's what I'm trying to accomplish but the mechanics of doing the grammar changes are apparently quite different between C and Visual Basic. I just am not able to decipher the C code and effectively translate it into Visual Basic. While some of the terms are the same, the structures appear to be quite different.

I'll keep experimenting and see what I can figure out. The example is in C , there are some semicolons and curly brackets but it's not very different from VB. Imports System Imports Microsoft. Recognition Imports Microsoft. Synthesis Imports System. RecognizeAsync RecognizeMode.

WriteLine ex. Message Console. Confidence Console. WriteLine " Speaking: Farewell " ss. Speak "Farewell" End If If txt. Thanks, JohnH. I have everything working now, but the one part of my original question is still unanswered. That was: once a grammar has been established and recognizable words added, is there any way to remove words from the grammar? I don't see anything in the language that would provide for that. I suppose I could just shut down the speech recognition engine, and start it or another instance of the engine and then load the grammar minus the words I wanted to remove.

At any rate, that's a moot point now as I've just added code in the speech recognition routine to ignore certain words if they are not valid in the current context. First, the language to recognize is specified, United States English in this case, in a CultureInfo object. The CultureInfo object is located in the Globalization namespace that was referenced with a using statement.

Next, after calling the SpeechRecognitionEngine constructor, voice input is set to the default audio device, a microphone in most situations. Note that most laptops have a built-in microphone, but most desktop machines will need an external microphone often combined with a headset these days.

The key method for the recognizer object is the SpeechRecognized event handler. I recommend hitting the tab key to accept and use that default name. The three key objects here are a Choices collection, a GrammarBuilder template and the controlling Grammar. The Grammar object encapsulates the template and choices. In the demo, I restrict the numbers to add to 1 through 4, and add them as strings to the Choices collection. A better approach is:.

I present the weaker approach to create a Choices collection for two reasons. First, adding one string at a time was the only approach I saw in other speech examples. I recommend passing an array. Creating a Choices collection of consecutive numbers is somewhat a special case, and allows a programmatic approach like this:.

After creating the Choices to fill in the slots of the GrammarBuilder, the demo creates the GrammarBuilder and then the controlling Grammar, like so:. You have a lot of flexibility when defining grammars.

The RecognizeMode. Multiple argument is required when you have more than one grammar, which will be the case in all but the simplest programs. The Main method finishes like so:. The curious-looking empty while loop allows the console application shell to stay alive.

Text property. You can also use the Result. Words collection. The Result. Confidence property holds a value between 0. The demo instructs the event handler to ignore any low-confidence-recognized text.

Confidence values can vary wildly depending on the complexity of your grammars, the quality of your microphone and so on. For example, if the demo program must recognize only 1 through 4, the confidence values on my machine are typically about 0.

However, if the grammar must recognize 1 through , the confidence values drop to about 0. In short, you must typically experiment with confidence values to get good speech-recognition results. Although perhaps not entirely obvious at first, the logic should make sense if you examine it for a moment.

Next, the secret exit command is processed:. Notice that the speech recognition engine can in fact recognize nonsense words. Archived Forums. Visual Basic. Not for VB6 questions. Sign in to vote. How do I make a program that you can talk into a mic and have what u said show in a textbox?

I've looked everywhere on the internet and can't find a way how too. Needs to be in vb. Sunday, October 2, PM.

Monkeyboy 0. My goal is to make an application that helps you spell any word you say into your mic, is that possible? La vida loca. Edited by Mr. Tuesday, October 4, AM. Add a reference to System. Speech and then use code something like: Imports System. Load listener. SpeechRecognized TextBox1. Text End Sub End Class. Monday, October 3, AM. I want to use speech recognition to make a program. However, while the program is running, I noticed that some of the commands for windows like saying "run" would trigger other program functions.

Thus, while the VB. Also, when the computer starts up, I speech to start listening right away rather than me having to say "start listening". How can I do this?

Can someone help me do this? I am pretty sure that it is simple. Object, ByVal e As System. EventArgs Handles MyBase. Dim colorRule As New Recognition. SrgsRule "color". Dim colorsList As New Recognition.