Error: there already is a keyword recognizer with "go" as one of its keyword UnityEngine.Windows.Speech.KeywordRecognizer:.ctor(String[])

Question

I'm Trying to make speech recognition with KeywordRecognizer and Microsoft.Speech but i got this error

it sends me the same error even when i write a different word than go

this is my code: using System.Collections; using System.Collections.Generic; using UnityEngine; using UnityEngine.Windows.Speech; using System.Linq;

 public class Recognition : MonoBehaviour {
 
     KeywordRecognizer KeywordRecognizer;
     Dictionary<string, System.Action> keywords = new Dictionary<string, System.Action>();
 
     void Start()
     {
 
         keywords.Add(" go ", () =>
         {
             GoCalled();
         });
         KeywordRecognizer = new KeywordRecognizer(keywords.Keys.ToArray());
         KeywordRecognizer.OnPhraseRecognized += KeywrodRecognizerOnPhraseRecognized;
         KeywordRecognizer.Start();
     }
 
     void KeywrodRecognizerOnPhraseRecognized(PhraseRecognizedEventArgs args)
     {
         System.Action keywordAction;
         if (keywords.TryGetValue(args.text , out keywordAction))
         {
             keywordAction.Invoke();
         }
     }
 
     void GoCalled()
     {
         print("you just said GO");
     }
 }

Answer 1

Best Answer

Answer by Influnza · Aug 02, 2017 at 04:38 AM

I was hitting hit this error when loading a new scene and creating a new recognizer. The error went away with:

 void OnDestroy()
 {
 if (keywordRecognizer != null)
   {
     keywordRecognizer.Stop();
     keywordrecognizer.Dispose();
   }
 }

I think even a better solution would be to create a singleton once (DontDestroyOnLoad)

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Bunny83 · Aug 02, 2017 at 05:03 AM 0

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This would have been my first assumption that you somehow create two or more at the same time. The $$anonymous$$eywordRecogniser wraps some native OS libraries, so make sure you only create one instance at any time. Even when you implement a singleton i would strongly recommend to keep that OnDestroy. Native resources should always be explicitly disposed. Never rely on the GC.

Answer 2

Answer by sandbaydev · Jan 19, 2018 at 02:54 PM

Bit old question, but I had the same problem so I thought to add:

Make sure you start only ONE speech recognition script in the scene. If you have 2 objects with the script, you'll get that error.

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Error: there already is a keyword recognizer with "go" as one of its keyword UnityEngine.Windows.Speech.KeywordRecognizer:.ctor(String[])

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