我的问题分为两部分.

>有没有一种方法可以使用语音命令启用语音识别.
>是否可以禁用语音识别,但同时也可以使其处于侦听状态或启用该命令,以告知何时重新启用语音识别.

这就是我的想法：

case "Stop Listening":
    synthesizer.speakasync("Ok");
    recEngine.RecognizeAsyncStop();
    //Command or code here that wait's for the command "Start Listening"
    recEngine.RecognizeAsyncStop "until" case "Start Listening"
    break;

我知道这是行不通的,因为没有“ until”命令,那么我该怎么做呢？

解决方法:

我处理这个问题的方法是让它一直在听.我认为这也可能是“大人物”的做法,按照定义,如果您要使用语音命令开始收听,那么它已经必须在收听.

就我而言,我希望程序始终运行,因此我在构造函数中进行了设置.听起来这与您正在执行的操作类似：在此处为短语添加一个明确的名称会有所帮助(例如说“嘿Cortana”或“ OK Google”,这有助于了解您正在尝试用它).假设您希望您的开始短语是“嘿拉里,开始听我说”.您将拥有第二个SpeechRecognitionEngine,该引擎始终存在,但是如果您使用的是主引擎,则将其关闭；如果您要停止主引擎,则将其重新打开.

public partial class Form1 : Form
    {
        private Choices onOff = new Choices();
        private Choices recChoices = new Choices();
        private SpeechRecognitionEngine alwaysOnListener = new SpeechRecognitionEngine(new System.Globalization.CultureInfo("en-US"));
        private SpeechRecognitionEngine recEngine = new SpeechRecognitionEngine(new System.Globalization.CultureInfo("en-US"));

        public Form1()
        {
            InitializeComponent();
            onOff.Add(new string[] {"Hey Larry start listening to me"});
            GrammarBuilder gb = new GrammarBuilder();
            gb.Append(onOff);
            Grammar g = new Grammar(gb);
            alwaysOnListener.LoadGrammar(g);
            alwaysOnListener.SpeechRecognized += alwaysOnListener_SpeechRecognized;


            recChoices.Add(new string[] {"Stop Listening"});
            GrammarBuilder gb2 = new GrammarBuilder();
            gb2.Append(recChoices);
            Grammar recGrammar = new Grammar(gb2);
            recEngine.LoadGrammar(recGrammar);
            recEngine.SpeechRecognized += recEngine_SpeechRecognized;
        }

        void recEngine_SpeechRecognized(object sender, SpeechRecognizedEventArgs e)
        {
            if (e.Result.Text.Equals("Stop Listening"))
            {
                recEngine.RecognizeAsyncStop();
                alwaysOnListener.RecognizeAsync(RecognizeMode.Multiple);
            }

        }

        void alwaysOnListener_SpeechRecognized(object sender, SpeechRecognizedEventArgs e)
        {
            if (e.Result.Text.Equals("Hey Larry start listening to me"))
            {
                recEngine.RecognizeAsync(RecognizeMode.Multiple);
                alwaysOnListener.RecognizeAsyncStop();
            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            alwaysOnListener.EmulateRecognize("Hey Larry start listening to me");
        }

        private void btnStop_Click(object sender, EventArgs e)
        {
            recEngine.EmulateRecognize("Stop Listening");
        }
    }