Please have a look at the following code
private void button2_Click(object sender, EventArgs e)
{
SpeechRecognizer sr = new SpeechRecognizer();
Choices colors = new Choices();
colors.Add(new string[] { "red arrow", "green", "blue" });
GrammarBuilder gb = new GrammarBuilder();
gb.Append(colors);
Grammar g = new Grammar(gb);
sr.LoadGrammar(g);
// SpeechSynthesizer s = new SpeechSynthesizer();
// s.SpeakAsync("start speaking");
sr.SpeechRecognized += new EventHandler<SpeechRecognizedEventArgs>(sr_SpeechRecognized);
}
void sr_SpeechRecognized(object sender, SpeechRecognizedEventArgs e)
{
MessageBox.Show(e.Result.Text);
}
This is normal speech recognition code which uses the MS speech engine. You can see here that I have loaded some grammar. But, there is an issue as well. That is, this is not responding only to the given grammar but also to the MS Built-In speech commands! Like speech command to minimize a window, open start menu etc!
I really don't need that. My application should only respond to my grammar and not to MS built-in commands. Is there is a way I can achieve this?
The SpeechRecognizer object builds on top of the existing Windows Speech system. From MSDN:
Applications use the shared recognizer to access Windows Speech
Recognition. Use the SpeechRecognizer object to add to the Windows
speech user experience.
Consider using a SpeechRecognitionEngine object instead as this runs in-process rather than system-wide.
Related
I have ran into an interesting issue with my voice recognition code for C#. I have had this code work before, but I migrated it to another project and it just wont work. I must be missing something, because there are no errors or warnings about the speech recognition and I do have the reference for speech. Here is the main function:
static void Main(string[] args)
{
Program prgm = new Program();
string[] argument = prgm.readConfigFile();
if(argument[2].ToLower().Contains("true"))
{
recognizer = new SpeechRecognitionEngine(new System.Globalization.CultureInfo("en-US"));
recognizer.LoadGrammar(new DictationGrammar());
recognizer.SpeechRecognized += new EventHandler<SpeechRecognizedEventArgs>(recognizer_SpeechRecognized);
recognizer.SetInputToDefaultAudioDevice();
recognizer.RecognizeAsync(RecognizeMode.Multiple);
}
prgm._con.updateConsole(argument, prgm._list);
}
static void recognizer_SpeechRecognized(object sender, SpeechRecognizedEventArgs e)
{
Console.WriteLine(e.Result.Text);
}
along with the recognizer:
recognizer = new SpeechRecognitionEngine(new System.Globalization.CultureInfo("en-US"));
I did add the using System.Speech at the top of my code. When ever I start talking the event handler should start, but it never gets hit (checked with breakpoint). What am I doing wrong?
I need to way to make the speech to text smarter as many of the words it is just getting incorrect in the translation. I cannot find much help on adding a list of words, not commands or grammar but words to help better translate audio recording.
Here is the code I found on the web, and this works, but I need to way to train, or make the engine smarter. Any ideas?
Thanks.
static void Main(string[] args)
{
// Create an in-process speech recognizer for the en-US locale.
using (SpeechRecognitionEngine recognizer =
new SpeechRecognitionEngine(
new System.Globalization.CultureInfo("en-US")))
{
// Create and load a dictation grammar.
recognizer.LoadGrammar(new DictationGrammar());
// Add a handler for the speech recognized event.
recognizer.SpeechRecognized +=
new EventHandler<SpeechRecognizedEventArgs>(recognizer_SpeechRecognized);
// Configure input to the speech recognizer.
recognizer.SetInputToWaveFile(#"c:\test2.wav");
// Start asynchronous, continuous speech recognition.
recognizer.RecognizeAsync(RecognizeMode.Multiple);
// Keep the console window open.
while (true)
{
Console.ReadLine();
}
}
}
// Handle the SpeechRecognized event.
static void recognizer_SpeechRecognized(object sender, SpeechRecognizedEventArgs e)
{
Console.WriteLine("Recognized text: " + e.Result.Text);
using (System.IO.StreamWriter file = new System.IO.StreamWriter(#"C:\WriteLines2.txt", true))
{
file.WriteLine("");
}
}
i want to use kinect sdk voice recognition to run application from Metro UI.
For Example when i say the word:News, it would run from Metro UI the application of News.
Thanks to everybody!
Regards!
First you need to Make the connection with the audio stream and start listening:
private KinectAudioSource source;
private SpeechRecognitionEngine sre;
private Stream stream;
private void CaptureAudio()
{
this.source = KinectSensor.KinectSensors[0].AudioSource;
this.source.AutomaticGainControlEnabled = false;
this.source.EchoCancellationMode = EchoCancellationMode.CancellationOnly;
this.source.BeamAngleMode = BeamAngleMode.Adaptive;
RecognizerInfo info = SpeechRecognitionEngine.InstalledRecognizers()
.Where(r => r.Culture.TwoLetterISOLanguageName.Equals("en"))
.FirstOrDefault();
if (info == null) { return; }
this.sre = new SpeechRecognitionEngine(info.Id);
if(!isInitialized) CreateDefaultGrammars();
sre.LoadGrammar(CreateGrammars()); //Important step
this.sre.SpeechRecognized +=
new EventHandler<SpeechRecognizedEventArgs>
(sre_SpeechRecognized);
this.sre.SpeechHypothesized +=
new EventHandler<SpeechHypothesizedEventArgs>
(sre_SpeechHypothesized);
this.stream = this.source.Start();
this.sre.SetInputToAudioStream(this.stream, new SpeechAudioFormatInfo(
EncodingFormat.Pcm, 16000, 16, 1, 32000, 2, null));
this.sre.RecognizeAsync(RecognizeMode.Multiple);
}
First you can see in the sample that there's one important step sre.LoadGrammar(CreateGrammars()); which creates and loads the grammar so you have to create the method CreateGrammars():
private Grammar CreateGrammars()
{
var KLgb = new GrammarBuilder();
KLgb.Culture = sre.RecognizerInfo.Culture;
KLgb.Append("News");
return Grammar(KLgb);
}
The above sample create a grammar listening for the word "News". Once it is recognized (the probability that the word said is one in your grammar is higher than a threshold), the speech recognizer engine (sre) raise the SpeechRecognized event.
Of course you need to add the proper handler for the two events (Hypothetize, Recognize):
private void sre_SpeechRecognized(object sender, SpeechRecognizedEventArgs e)
{
this.RecognizedWord = e.Result.Text;
if (e.Result.Confidence > 0.65) InterpretCommand(e);
}
Know all you have to do is to write the InterpretCommand method which does whatever you want (as running a metro app ;) ). If you have multiple words in a dictionnary the method has to parse the text recognized and verify that this is the word news wich was recognized.
Here you can download samples of a great book on Kinect: Beginning Kinect Programming with the Microsoft Kinect SDK (unfortunately the book itself is not free). On the folder Chapter7\PutThatThereComplete\ you have a sample using audio that you can be inspired by.
I'm using SpeechRecognitionEngine to recognize speech in a WPF application. The app is using a small custom grammar and tries to detect words asynchronously, using RecognizeMode.Multiple.
The problem is that if I click inside a TextBox control that I've placed onto the interface, the recognizer works for two or three more words and then stops running.
In the application's output window, I can see about 4 threads being closed.
If I don't click in the TextBox, everything works fine; I can even click outside the app's window, onto Notepad or something, and the recognition still works.
I'm using Windown 7 Home Premium x64 and Visual Studio 2010.
Here is the relevant section of code:
try
{
var c = new Choices();
c.Add("copy");
c.Add("cut");
c.Add("paste");
c.Add("delete");
c.Add("select all");
c.Add("compile");
c.Add("refactor");
c.Add("spellcheck");
c.Add("exit");
var gb = new GrammarBuilder(c);
var g = new Grammar(gb);
SpeechRecognitionEngine recognitionEngine = new SpeechRecognitionEngine();
recognitionEngine.SetInputToDefaultAudioDevice();
recognitionEngine.LoadGrammar(g);
recognitionEngine.SpeechRecognized +=
new EventHandler<SpeechRecognizedEventArgs>(rec_SpeechRecognized);
recognitionEngine.RecognizeAsync(RecognizeMode.Multiple);
}
catch (Exception ex)
{
MessageBox.Show(ex + "");
}
private void rec_SpeechRecognized(object sender, SpeechRecognizedEventArgs e)
{
Console.Out.WriteLine(e.Result.Text + " ");
}
I'm making a program that uses the system.speech namespace (it's a simple program that will launch movies). I load all of the filenames from a folder and add them to the grammars I want to use. It's working remarkably well, however there is a hitch: I DON'T want the windows speech recognition to interact with windows at all (ie. when I say start, I don't want the start menu to open... I don't want anything to happen).
Likewise, I have a listbox for the moment that lists all of the movies found in the directory. When I say the show/movie that I want to open, the program isn't recognizing that the name was said because windows speech recognition is selecting the listboxitem from the list instead of passing that to my program.
The recognition is working otherwise, because I have words like "stop", "play", "rewind" in the grammar, and when I catch listener_SpeechRecognized, it will correctly know the word(s)/phrase that I'm saying (and currently just type it in a textbox).
Any idea how I might be able to do this?
I'd use the SpeechRecognitionEngine class rather than the SpeechRecognizer class. This creates a speech recognizer that is completely disconnected from Windows Speech Recognition.
private bool Status = false;
SpeechRecognitionEngine sre = new SpeechRecognitionEngine();
Choices dic = new Choices(new String[] {
"word1",
"word2",
});
public Form1()
{
InitializeComponent();
Grammar gmr = new Grammar(new GrammarBuilder(dic));
gmr.Name = "myGMR";
// My Dic
sre.LoadGrammar(gmr);
sre.SpeechRecognized +=
new EventHandler<SpeechRecognizedEventArgs>(sre_SpeechRecognized);
sre.SetInputToDefaultAudioDevice();
sre.RecognizeAsync(RecognizeMode.Multiple);
}
private void button1_Click(object sender, EventArgs e)
{
if (Status)
{
button1.Text = "START";
Status = false;
stslable.Text = "Stopped";
}
else {
button1.Text = "STOP";
Status = true;
stslable.Text = "Started";
}
}
public void sre_SpeechRecognized(object sender, SpeechRecognizedEventArgs ev)
{
String theText = ev.Result.Text;
MessageBox.Show(theText);
}