System.Speech 在调试时无法识别语音

Question

我打算用 C# 制作一个表单应用程序，它可以识别语音，然后用户可以说一些简单的命令，例如“hi”，计算机会回复“hi there, can I help you with someting”。我 100% 确定我的麦克风可以正常工作，但是当我调试程序时，它似乎无法识别来自我的麦克风的任何命令或音频。我正在使用 Visual Studio Community 2015。我想知道，我有什么遗漏或做错了吗？计算机加载表格并与我交谈，但它无法识别我的声音。我将不胜感激任何帮助。谢谢！

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

namespace VoiceHost
{
    public partial class Form1 : Form
    {
        SpeechSynthesizer Host = new SpeechSynthesizer();
        Choices services = new Choices();

        public Form1()
        {


            SpeechRecognitionEngine UserRecog = new SpeechRecognitionEngine();

            services.Add(new string[] {"hi"});

            Grammar gr = new Grammar(new GrammarBuilder(services));
            Say("hello, my name is voice host, how can I help");

            try
            {
                UserRecog.RequestRecognizerUpdate();
                UserRecog.LoadGrammar(gr);
                UserRecog.SpeechRecognized += UserRecog_SpeechRecognized;
                UserRecog.SetInputToDefaultAudioDevice();
                UserRecog.RecognizeAsync(RecognizeMode.Multiple);
            }
            catch { return; }
        }
        public void Say(string responseMessage)
        {
            Host.Speak(responseMessage);
        }

        private void UserRecog_SpeechRecognized(object sender, SpeechRecognizedEventArgs e)
        {
            string userOrder = e.Result.Text;

            if (userOrder == "hi")
            {
                Say("hi there, can I help you with someting");
            }
            InitializeComponent();

        }
        private void Form1_Load(object sender, EventArgs e)
        {

        }
    }

}

Answer 1

catch { 异常前 } 这样您就可以查看代码中是否有任何中断。