在开始，先说说这个小工具的来由。我计划在11月16号在东京举办一次《AI应用开发之旅》的社区活动（https://www.just-agi.com/event.html），活动华人为主，所以用中文，朋友说要带日本人过来，问有没有日语字幕，看了一下我的Teams，只有实时字幕，并没有翻译，于是就开始自己造轮子了。
这个小工具是用WinForm开发，只保留源语言文字和翻译后文字显示，其他部分作透明化处理，实时翻译的API调用的是Microsoft Speech的翻译API，10来分钟的工作量吧。
MainForm.Designer.cs文件：
namespace JapneseHelper{partial class MainForm{/// <summary>/// Required designer variable./// </summary>private System.ComponentModel.IContainer components = null;/// <summary>/// Clean up any resources being used./// </summary>/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>protected override void Dispose(bool disposing){if (disposing && (components != null)){components.Dispose();}base.Dispose(disposing);}/// <summary>/// Required method for Designer support - do not modify/// the contents of this method with the code editor./// </summary>private void InitializeComponent(){ZhLab = new Label();JaLab = new Label();SuspendLayout();//// ZhLab//ZhLab.BackColor = Color.Transparent;ZhLab.Dock = DockStyle.Bottom;ZhLab.Font = new Font("Microsoft YaHei UI", 24F);ZhLab.ForeColor = Color.White;ZhLab.Location = new Point(0, 530);ZhLab.Margin = new Padding(5, 0, 5, 0);ZhLab.Name = "ZhLab";ZhLab.Size = new Size(2259, 67);ZhLab.TabIndex = 0;ZhLab.Text = "这里是字幕";ZhLab.TextAlign = ContentAlignment.MiddleCenter;ZhLab.MouseDown += ControlMouseDown;ZhLab.MouseMove += ControlMouseMove;ZhLab.MouseUp += ControlMouseUp;//// JaLab//JaLab.BackColor = Color.Transparent;JaLab.Dock = DockStyle.Fill;JaLab.Font = new Font("Microsoft YaHei UI", 32F);JaLab.ForeColor = Color.White;JaLab.Location = new Point(0, 0);JaLab.Margin = new Padding(5, 0, 5, 0);JaLab.Name = "JaLab";JaLab.Size = new Size(2259, 530);JaLab.TabIndex = 1;JaLab.TextAlign = ContentAlignment.BottomCenter;JaLab.MouseDown += ControlMouseDown;JaLab.MouseMove += ControlMouseMove;JaLab.MouseUp += ControlMouseUp;//// MainForm//AutoScaleDimensions = new SizeF(19F, 41F);AutoScaleMode = AutoScaleMode.Font;BackColor = Color.Black;BackgroundImageLayout = ImageLayout.Stretch;ClientSize = new Size(2259, 597);Controls.Add(JaLab);Controls.Add(ZhLab);DoubleBuffered = true;Font = new Font("Microsoft YaHei UI", 16F);FormBorderStyle = FormBorderStyle.None;Margin = new Padding(5);Name = "MainForm";Text = "字幕";TopMost = true;TransparencyKey = Color.Black;Load += MainForm_Load;ResumeLayout(false);}private Label ZhLab;private Label JaLab;}}
MainForm.cs文件：
using Microsoft.CognitiveServices.Speech;using Microsoft.CognitiveServices.Speech.Translation;namespace JapneseHelper{public partial class MainForm : Form{public MainForm(){InitializeComponent();}private void MainForm_Load(object sender, EventArgs e){var sourceLanguage = System.Configuration.ConfigurationManager.AppSettings["sourceLanguage"];var targetLanguage = System.Configuration.ConfigurationManager.AppSettings["targetLanguage"];var apikey = System.Configuration.ConfigurationManager.AppSettings["apikey"];var region = System.Configuration.ConfigurationManager.AppSettings["region"];var config = SpeechTranslationConfig.FromSubscription(apikey, region);config.SpeechRecognitionLanguage = sourceLanguage;config.AddTargetLanguage(targetLanguage);var recognizer = new TranslationRecognizer(config);recognizer.Recognizing += (s, e) =>{this.Invoke(() =>{ZhLab.Text = e.Result.Text;foreach (var element in e.Result.Translations){JaLab.Text = element.Value;}});};recognizer.StartContinuousRecognitionAsync().ConfigureAwait(false).GetAwaiter();}protected override void OnLoad(EventArgs e){base.OnLoad(e);Rectangle workingArea = Screen.PrimaryScreen.WorkingArea;var x = (workingArea.Width - this.Width) / 2 + workingArea.Left;var y = workingArea.Bottom - this.Height;this.Location = new Point(x, y);}private Point mouseOffset;private bool isMouseDown = false;private void ControlMouseDown(object sender, MouseEventArgs e){if (e.Button == MouseButtons.Left){mouseOffset = new Point(-e.X, -e.Y);isMouseDown = true;}}private void ControlMouseMove(object sender, MouseEventArgs e){if (isMouseDown){Point mousePos = Control.MousePosition;mousePos.Offset(mouseOffset.X, mouseOffset.Y - this.Height / 2);this.Location = mousePos;}}private void ControlMouseUp(object sender, MouseEventArgs e){if (e.Button == MouseButtons.Left){isMouseDown = false;}}}}
效果图：
正好这几天与营业部开会，试用了几次，总体的意思还是能搞清楚的，与现场的环境也有一定的关系。
