CODEWITHSUNDEEP
c#.netwinformsspeech-recognition
ledgeJumper
ledgeJumper

Reputation: 3630

Trying to make a very simple speech recognition windows form project

I followed a very basic tutorial (forgot the link) and it all seems straightforward, but I don't seem to be getting the output I want. Here is my main form class:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Speech.Recognition;

namespace OralNotes.Alpha
{
public partial class MainForm : Form
{
    private SpeechRecognitionEngine recognitionEngine;

    public MainForm()
    {
        InitializeComponent();

        recognitionEngine = new SpeechRecognitionEngine();
        recognitionEngine.SetInputToDefaultAudioDevice();
        recognitionEngine.SpeechRecognized += (s, args) =>
          {
              foreach (RecognizedWordUnit word in args.Result.Words)
              {
                  if (word.Confidence > 0.8f)
                      txtNotes.Text += word.Text + " ";

              }
              txtNotes.Text += Environment.NewLine;
          };
        recognitionEngine.LoadGrammar(new DictationGrammar());
    }

    private void btnStart_Click(object sender, EventArgs e)
    {
        recognitionEngine.RecognizeAsync();
    }

    private void btnStop_Click(object sender, EventArgs e)
    {
        recognitionEngine.RecognizeAsyncStop();
    }
}
}

And you probably don't need this, but here it is anyway:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows.Forms;

namespace OralNotes.Alpha
{
static class Program
{
    /// <summary>
    /// The main entry point for the application.
    /// </summary>
    [STAThread]
    static void Main()
    {
        Application.EnableVisualStyles();
        Application.SetCompatibleTextRenderingDefault(false);
        Application.Run(new MainForm());
    }
}
}

I click start and talk, and nothing happens.

UPDATE*

ok so this is working, if I adjust this line

if (word.Confidence > 0.8f)

to a lower number I get a word or two in. Not transcribing sentences or anything, is there a way to make this have better recognition?

Upvotes: 1

Views: 2965

Answers (1)

Viktor
Viktor

Reputation: 689

It seems that the engine that you are using returns a confidence value on every word it hears.

I suspect that the confidence values range from 0-1. Which means that if you lower the value from 0.8 you are making the engine more tolerant to words. Maybe it is the quality of your mic?

Upvotes: 1

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