public static SpeakerManager GetInstance() {
   if (manager == null) {
     manager = new SpeakerManager();
     manager.Init();
   }
   return manager;
 }
 public static SpeakerManager GetInstance()
 {
     if (manager == null)
     {
         manager = new SpeakerManager();
         manager.Init();
     }
     return(manager);
 }