C# 离线语音识别Microsoft Speech Platform SDK例子

以下是一个简单的 C# 离线语音识别 Microsoft Speech Platform SDK 的例子：

using System;
using System.Speech.Recognition;

class Program
{
    static void Main(string[] args)
    {
        // 创建语音识别引擎
        SpeechRecognitionEngine recognizer = new SpeechRecognitionEngine(new System.Globalization.CultureInfo("en-US"));

        // 设置识别模式为离线模式
        recognizer.SetInputToDefaultAudioDevice(); 

        // 加载语音识别语法
        var grammar = new Grammar("MyGrammar.xml");
        recognizer.LoadGrammar(grammar);

        // 注册语音识别事件处理程序
        recognizer.SpeechRecognized += new EventHandler<SpeechRecognizedEventArgs>(recognizer_SpeechRecognized);

        // 开始语音识别
        recognizer.RecognizeAsync(RecognizeMode.Multiple);

        Console.WriteLine("Press any key to exit.");
        Console.ReadKey();
    }

    static void recognizer_SpeechRecognized(object sender, SpeechRecognizedEventArgs e)
    {
        Console.WriteLine("Recognized text: " + e.Result.Text);
    }
}

上述代码中，`MyGrammar.xml` 是语音识别语法文件，用于定义识别的关键词和短语。`recognizer_SpeechRecognized` 是语音识别事件处理程序，用于处理识别结果。调用 `recognizer.RecognizeAsync(RecognizeMode.Multiple)` 开始语音识别，识别过程将在后台进行，直到调用 `recognizer.RecognizeAsyncStop()` 方法停止识别。