语音 SDK - LoadGrammar() 引发 UnauthorizedAccessException

Question

我正在尝试在我的 Windows 8 上使用 C# (4.5) 上的语音识别库。

我安装了“Microsoft Speech Platform SDK 11”，但使用 LoadGrammar 收到异常。

我的程序：

using System;
using System.Speech.Recognition;
using System.Speech.Synthesis;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace SpeechRecognition
{
    class Program
    {
        static void Main(string[] args)
        {
            // Create an in-process speech recognizer for the en-US locale.
            using (SpeechRecognitionEngine recognizer = new SpeechRecognitionEngine())
            {
                // Create and load a dictation grammar.
                // An unhandled exception of type 'System.UnauthorizedAccessException' occurred in System.Speech.dll

                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.SetInputToDefaultAudioDevice();

                // 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);
        }
    }
}

System.Speech.dll 中出现“System.UnauthorizedAccessException”类型的未处理异常

堆栈跟踪：

他们 System.Speech.Recognition.RecognizerBase.Initialize（SapiRecognizer 识别器，布尔 inproc) em System.Speech.Recognition.SpeechRecognitionEngine.get_RecoBase() em System.Speech.Recognition.SpeechRecognitionEngine.LoadGrammar（语法 语法) em SpeechRecognition.Program.Main(String[] args) na e:\TestCenter\SpeechRecognition\SpeechRecognition\Program.cs:linha 23 em System.AppDomain._nExecuteAssembly（RuntimeAssembly 程序集， 字符串[] args) em Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
em System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext、ContextCallback 回调、对象状态、布尔值 preserveSyncCtx) 时间 System.Threading.ExecutionContext.Run（ExecutionContext executionContext、ContextCallback 回调、对象状态、布尔值 preserveSyncCtx) 时间 System.Threading.ExecutionContext.Run（ExecutionContext executionContext、ContextCallback 回调、Object 状态）

我在Win7和Win8下测试过，但是没有一个能用。

有人可以帮我吗？

Answer 1

奇怪的是，我似乎记得 Speech SDK 有类似的问题，但找不到解决方案。我认为它涉及更改所有者或访问您机器上某些文件或文件夹的权限。也许更多的 googlebinging 可以帮助您找到我当时找到的解决方案，或者您可以使用 ProcessMonitor 来查看该过程正在尝试做什么以及失败。也许 eventvwr 会显示一些东西。

我尝试安装 Speech Platform SDK 11 和 Speech Platform Runtime，但我认为这些可能是在其 .NET 包装器中使用 Microsoft.Speech 命名空间的技术的服务器版本。我还安装了 Speech SDK 5.3，但我认为这不是最新版本。最终我安装了Windows 8.1 SDK，我认为这对我有用。这在我的 WPF 应用程序中运行良好：

XAML：

<Window x:Class="SpeechTestApp.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <TextBlock
            x:Name="tb"/>
    </Grid>
</Window>

C#

using System.Diagnostics;
using System.Globalization;
using System.Speech.Recognition;
using System.Windows;

namespace SpeechTestApp
{
    public partial class MainWindow : Window
    {
        private SpeechRecognitionEngine recognizer;

        public MainWindow()
        {
            InitializeComponent();
            // Create a SpeechRecognitionEngine object for the default recognizer in the en-US locale.
            this.recognizer = new SpeechRecognitionEngine(new CultureInfo("en-US"));
            {

                // Create a grammar for finding services in different cities.
                Choices services = new Choices(new string[] { "restaurants", "hotels", "gas stations" });
                Choices cities = new Choices(new string[] { "Seattle", "Boston", "Dallas" });

                GrammarBuilder findServices = new GrammarBuilder("Find");
                findServices.Append(services);
                findServices.Append("near");
                findServices.Append(cities);

                // Create a Grammar object from the GrammarBuilder and load it to the recognizer.
                Grammar servicesGrammar = new Grammar(findServices);
                recognizer.LoadGrammarAsync(servicesGrammar);

                // Add a handler for the speech recognized event.
                recognizer.SpeechRecognized += recognizer_SpeechRecognized;
                recognizer.SpeechDetected += RecognizerOnSpeechDetected;
                recognizer.SpeechHypothesized += RecognizerOnSpeechHypothesized;
                recognizer.SpeechRecognitionRejected += RecognizerOnSpeechRecognitionRejected;
                recognizer.AudioStateChanged += RecognizerOnAudioStateChanged;
                recognizer.AudioSignalProblemOccurred += RecognizerOnAudioSignalProblemOccurred;

                // Configure the input to the speech recognizer.
                recognizer.SetInputToDefaultAudioDevice();

                // Start asynchronous, continuous speech recognition.
                recognizer.RecognizeAsync(RecognizeMode.Multiple);
            }
        }

        private void RecognizerOnAudioSignalProblemOccurred(object sender, AudioSignalProblemOccurredEventArgs audioSignalProblemOccurredEventArgs)
        {
            Debug.WriteLine(audioSignalProblemOccurredEventArgs.AudioSignalProblem.ToString());
        }

        private void RecognizerOnAudioStateChanged(object sender, AudioStateChangedEventArgs audioStateChangedEventArgs)
        {
            Debug.WriteLine(audioStateChangedEventArgs.AudioState.ToString());
        }

        private void RecognizerOnSpeechRecognitionRejected(object sender, SpeechRecognitionRejectedEventArgs speechRecognitionRejectedEventArgs)
        {
            Debug.WriteLine("RecognizerOnSpeechRecognitionRejected: " + speechRecognitionRejectedEventArgs.Result.Text);
        }

        private void RecognizerOnSpeechHypothesized(object sender, SpeechHypothesizedEventArgs speechHypothesizedEventArgs)
        {
            Debug.WriteLine("Hypothesized: " + speechHypothesizedEventArgs.Result.Text);
            tb.Text = speechHypothesizedEventArgs.Result.Text;
        }

        private void RecognizerOnSpeechDetected(object sender, SpeechDetectedEventArgs e)
        {
            Debug.WriteLine("Detected position: " + e.AudioPosition);
        }

        private void recognizer_SpeechRecognized(object sender, SpeechRecognizedEventArgs e)
        {
            Debug.WriteLine("Recognized text: " + e.Result.Text);
            tb.Text = e.Result.Text;
        }
    }
}