此 C# winform 中未生成事件，它使用 azure 服务将语音转换为文本

Question

我有这个 c# winform，它使用 azure speech to text 将语音转换为文本。此 winform 有一个语音 on/off 复选框并执行连续语音识别，直到我关闭 window 。问题是，当我选中复选框时，只生成会话启动事件，没有其他任何事情发生，没有生成其他事件，如识别、识别、取消。你知道出了什么问题吗？

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 Microsoft.CognitiveServices.Speech;

namespace CsharpSTTform
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private async void checkBox1_CheckedChanged(object sender, EventArgs e)
        {
            if (checkBox1.Checked) await SpeechContinuousRecognitionAsync();
        }



        public async Task SpeechContinuousRecognitionAsync()
        {
            // Creates an instance of a speech config with specified subscription key and service region.
            // Replace with your own subscription key and service region (e.g., "westus").
            var config = SpeechConfig.FromSubscription("api key", "westus");

            // Creates a speech recognizer from microphone.
            using (var recognizer = new SpeechRecognizer(config))
            {
                // Subscribes to events.
                recognizer.Recognizing += (s, e) =>
                {
                    Console.WriteLine($"RECOGNIZING: Text={e.Result.Text}");
                };

                recognizer.Recognized += (s, e) =>
                {
                    var result = e.Result;
                    Console.WriteLine($"Reason: {result.Reason.ToString()}");
                    if (result.Reason == ResultReason.RecognizedSpeech)
                    {
                        Console.WriteLine($"Final result: Text: {result.Text}.");
                    }
                };

                recognizer.Canceled += (s, e) =>
                {
                    Console.WriteLine($"\n    Recognition Canceled. Reason: {e.Reason.ToString()}, CanceledReason: {e.Reason}");
                };

                recognizer.SessionStarted += (s, e) =>
                {
                    Console.WriteLine("\n    Session started event.");
                };

                recognizer.SessionStopped += (s, e) =>
                {
                    Console.WriteLine("\n    Session stopped event.");
                };

                // Starts continuous recognition. Uses StopContinuousRecognitionAsync() to stop recognition.
                await recognizer.StartContinuousRecognitionAsync().ConfigureAwait(false);

            }
        }


    }
}

当我选中复选框时，我得到的初始输出是：

  Session started event.
The thread 0x3274 has exited with code 0 (0x0).

一段时间后我得到了这个输出：

Session started event.
The thread 0x3274 has exited with code 0 (0x0).
The thread 0x5880 has exited with code 0 (0x0).
The thread 0x9e8 has exited with code 0 (0x0).

Answer 1

您的 recognizer 变量是方法 SpeechContinuousRecognitionAsync 的 局部变量 ，它会在 using 块的末尾处理，这可能是 几乎立即。

如果您将其更改为实例变量，并且在没有 using 构造的情况下创建，那么它将保留在内存中。

您稍后可以 Dispose() 如果需要的话。

public partial class Form1 : Form
{
    private SpeechRecognizer recognizer; // <-- instance variable

    public async Task SpeechContinuousRecognitionAsync()
    {
        var config = SpeechConfig.FromSubscription("api key", "westus");

        // Create a speech recognizer from microphone.
        recognizer = new SpeechRecognizer(config);

        recognizer.Recognizing += (s, e) =>
        {
            // ...
        };

        // ... rest of initialization
    }
}

此 C# winform 中未生成事件，它使用 azure 服务将语音转换为文本

Events not generated in this C# winform which uses azure services for converting speech to text

c#

multithreading

winforms

azure

speech-to-text