c# Realize text reading, voice alarm function

c# Realize text reading, voice alarm function

In the process of testing the software function, due to the need to operate the hardware to change the position, but there is a time delay in viewing the monitoring software after the operation is completed, unless two people cooperate, you want to implement the alarm for voice broadcast function.
Implementation Method 1
[DllImport("winmm. dll”)]
public static extern bool PlaySound(string pszSound, int hmod, int fdwSound);
public const int SND_FILENAME = 0x00020000;
public const int SND_ASYNC = 0x0001;

Then call PlaySound in the place where the alarm is needed to make a sound;
Disadvantages: The wav file must be admitted in advance, and it must be a wav file, which is not flexible
. Method 2
Download the file DotNetSpeech.dll online
and add the reference of this dynamic library to the reference
using DotNetSpeech;//Voice alarm engine
Read function
private void Read(string text)
{ SpVoice sp = new SpVoice(); sp.Rate = 0;//The reading speed can be adjusted by yourself. SpeechVoiceSpeakFlags sFlags = SpeechVoiceSpeakFlags.SVSFlagsAsync; sp. Speak(text, sFlags); }

Call the Read function at the place where the alarm is needed to play the content of the parameter;
advantage, no need to record the file, directly read the text content;

Optimization: Since the playback of files is much slower than the text display, voice loss may occur, or the program or the system may be delayed when a large amount of text is played. The thread mode
threadplaysound = new Thread(read);
threadplaysound.IsBackground = true;
threadplaysound. Start();

Add the text
llsound.Add (the text to be added) where the alarm is needed ; //llsound = list

/// <summary>
  /// 语音播报 llsount的内容，由于可能未播报完成，有新soe进入引起混乱，由线程调用
  /// </summary>
  public void read()
  {
      while(true)
      {
          while(llsound.Count>0)
          {
              Read(llsound[0]);
              Thread.Sleep(500);
              llsound.RemoveAt(0);
          }
          Thread.Sleep(500);                
      }            
  }    

The result of the experiment is valid, so mark it.