使用.NET语音识别的PlatformNotSupportedException

问题描述

所以我正在尝试C#的语音识别，我正在使用System.Speech.Recognition，并且我在互联网上四处搜寻，尝试了一些代码来进行一些基本的语音识别，这是我能做到的最好的代码发现是这样的:

So I'm trying voice recognition for C#, I'm using System.Speech.Recognition, and, I was searching around on the internet, trying out several pieces of code for some basic speech recognition, the best one I could find was this:

using System;
using System.Text;
using System.Windows.Forms;
using System.Speech.Recognition;

namespace SpeechRecognition
{
    public partial class MainForm : Form
    {

        SpeechRecognitionEngine recognitionEngine;


        public MainForm()
        {
            InitializeComponent();

            Initialize();
        }

        private void Initialize()
        {
            recognitionEngine = new SpeechRecognitionEngine();
            recognitionEngine.SetInputToDefaultAudioDevice();
            recognitionEngine.SpeechRecognized += (s, args) =>
            {
                foreach (RecognizedWordUnit word in args.Result.Words)
                {
                    // You can change the minimun confidence level here
                    if (word.Confidence > 0.8f)
                        freeTextBox.Text += word.Text + " ";
                }
                freeTextBox.Text += Environment.NewLine;
            };
        }

        private void startButton_Click(object sender, EventArgs e)
        {
            try
            {
                recognitionEngine.UnloadAllGrammars();
                recognitionEngine.LoadGrammar(new DictationGrammar());
                RecognitionResult result = recognitionEngine.Recognize(new TimeSpan(0, 0, 20));

                if (result != null)
                {
                    foreach (RecognizedWordUnit word in result.Words)
                    {

                        freeTextBox.Text += word.Text + " ";
                    }
                }

            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

        private void startAsyncButton_Click(object sender, EventArgs e)
        {
            recognitionEngine.UnloadAllGrammars();
            recognitionEngine.LoadGrammar(new DictationGrammar());
            recognitionEngine.RecognizeAsync(RecognizeMode.Multiple);
        }



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


        private void startAsyncGrammarButton_Click(object sender, EventArgs e)
        {
            try
            {
                recognitionEngine.UnloadAllGrammars();

                Grammar cg = CreateSampleGrammar();
                recognitionEngine.LoadGrammar(cg);
                recognitionEngine.RecognizeAsync(RecognizeMode.Multiple);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }


        private Grammar CreateSampleGrammar()
        {
            Choices commandChoices = new Choices("Calculator", "Notepad", "Internet Explorer", "Paint");
            GrammarBuilder grammarBuilder = new GrammarBuilder("Start");
            grammarBuilder.Append(commandChoices);
            Grammar g = new Grammar(grammarBuilder);
            g.Name = "Available programs";
            return g;
        }

    }
}

现在，我尝试了这种方法，以及其他一些方法，它们都导致了相同的错误，即PlatformNotSupportedException，错误内容为:未安装识别器".

Now, I tried this, and some others, and they all resulted in the same error, a PlatformNotSupportedException, in the error it says: "There is no recogniser installed".

有什么办法解决吗?我正在运行Windows 7 64位.

Is there any way around this? I'm running Windows 7 64 bits.

推荐答案

来自 http://msdn.microsoft.com/en-us/library/hh362873.aspx .

我认为您使用的是.NET附带的版本，但是此后已经发布了多个修订版本.Microsoft Speech Services v11是今天的最新版本.如果安装SDK，请添加引用，然后将名称空间更改为Microsoft.Speech(而不是System.Speech).

I think you're using the version that shipped with .NET, but there have been several revisions released out of band since then. Microsoft Speech Services v11 is the current release as of today. If you install the SDK, add a reference, and change your namespace to Microsoft.Speech (instead of System.Speech) you should be updated.

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