I am currently recreating a tutorial project that I saw o recently but I am facing certain problems. Firstly I am using Windows 7 Home Premium and my OS is Turkish.
Because of this, System.Speech only works when I do text to speech, otherwise it throws an exception saying no speech recognizer installed. I checked this from the control panel as well and it says speech recognition is not available in this language. Since I do not have the ultimate version of windows I can't use language packs to change the language totally.
After a bit of research in stackoverflow I found out that installing micosoft speech platform and changing System.Speech to Microsoft.Speech works. So I followed the instructions on this web site(http://msdn.microsoft.com/en-us/library/hh362873.aspx) and installed the components including the en-US language pack.
I changed my code to reflect the changes and now I am getting different errors on different lines. Here is my code :
using System;
using System.Globalization;
using Microsoft.Speech.Recognition;
using Microsoft.Speech.Synthesis;
using System.Windows.Forms;
namespace SpeechRecognitionTest
{
public partial class Form1 : Form
{
private SpeechRecognitionEngine _speechRecognitionEngine = new SpeechRecognitionEngine(new CultureInfo("en-US"));
private SpeechSynthesizer _speechSynthesizer = new SpeechSynthesizer();
private PromptBuilder _promptBuilder = new PromptBuilder();
public Form1()
{
InitializeComponent();
}
private void btnSpeakText_Click(object sender, EventArgs e)
{
_promptBuilder.ClearContent();
_promptBuilder.AppendText(txtSpeech.Text);
_speechSynthesizer.SetOutputToDefaultAudioDevice();
_speechSynthesizer.Speak(_promptBuilder);
}
private void btnStart_Click(object sender, EventArgs e)
{
btnStart.Enabled = false;
btnEnd.Enabled = true;
var choicesList = new Choices();
choicesList.Add(new string[]{"hello","yes"});
var grammar = new Grammar(new GrammarBuilder(choicesList));
_speechRecognitionEngine.RequestRecognizerUpdate();
_speechRecognitionEngine.LoadGrammar(grammar);
_speechRecognitionEngine.SpeechRecognized += _speechRecognitionEngine_SpeechRecognized;
_speechRecognitionEngine.SetInputToDefaultAudioDevice();
_speechRecognitionEngine.RecognizeAsync(RecognizeMode.Multiple);
}
void _speechRecognitionEngine_SpeechRecognized(object sender, SpeechRecognizedEventArgs e)
{
MessageBox.Show(e.Result.Text);
}
private void btnEnd_Click(object sender, EventArgs e)
{
btnStart.Enabled = true;
btnEnd.Enabled = false;
}
}
}
Firstly, when I try text to speech I get the error "An unhandled exception of type 'System.IO.FileNotFoundException' occurred in Microsoft.Speech.dll" on this line:
_speechSynthesizer.Speak(_promptBuilder);
Secondly when I try to do voice recognition I get the following exception:
An unhandled exception of type 'System.InvalidOperationException' occurred in Microsoft.Speech.dll
Additional information: The language for the grammar does not match the language of the speech recognizer.
On the line:
_speechRecognitionEngine.LoadGrammar(grammar);
I did search the internet and found mixed responses to this problem. Some could use System.Speech without a problem since they had english language installed, some non-english OS owners solved the problem through Microsoft.Speech. But there is no definitive answer on this. I am currently out of options and would really like if someone can explain what's wrong or even if I can run this code on my machine because of native OS language.
