Help with javax.speech recognition

[Dinesh Raju]

Hi to all

i am trying to write code to recognize voice..


i installed JSPAI and CloudGarden TalkingJava SDK
and i included the jar file in classpath

i downloaded the sample code

import javax.speech.Central;
import javax.speech.recognition.*;
import java.io.FileReader;
import java.util.Locale;
 
public class SpeechToTextConverter extends ResultAdapter {
  static Recognizer recognizer;
  public void resultAccepted(ResultEvent resultEvent) {
    Result result = (Result)(resultEvent.getSource());
    ResultToken resultToken[] = result.getBestTokens();
    for (int nIndex = 0; nIndex < resultToken.length; nIndex++){
        System.out.print(resultToken[nIndex].getSpokenText() + " ");
    }
    try {     
         // Deallocate the recognizer
         recognizer.forceFinalize(true);         
         recognizer.deallocate();
        }catch (Exception exception) {
         exception.printStackTrace();
        }
       System.exit(0);
    }
 
    public static void main(String args[]) {
    try {
          Central.registerEngineCentral
             ("com.cloudgarden.speech.CGEngineCentral");
          RecognizerModeDesc desc =
              new RecognizerModeDesc(Locale.ENGLISH,Boolean.TRUE);
         // Create a recognizer that supports US English.
         recognizer = Central.createRecognizer(desc);
         // Start up the recognizer
         recognizer.allocate();
         // Load the grammar from a file, and enable it
         FileReader fileReader = 
             new FileReader("D:\\my_grammar.grammar");
         RuleGrammar grammar = recognizer.loadJSGF(fileReader);
         grammar.setEnabled(true);
         // Add the listener to get results
         recognizer.addResultListener(new SpeechToTextConverter());
         // Commit the grammar
         recognizer.commitChanges();
         recognizer.waitEngineState(Recognizer.LISTENING);
         // Request focus and start listening
         recognizer.requestFocus();
         recognizer.resume();
         recognizer.waitEngineState(Recognizer.FOCUS_ON);
         recognizer.forceFinalize(true);              
         recognizer.waitEngineState(Recognizer.DEALLOCATED);
        } catch (Exception e) {
          e.printStackTrace();
          System.exit(0);
         }
   }
}

when i was trying to run it shows the NullPointerException here my output screen

CloudGarden's JSAPI1.0 implementation
Version 1.7.0
Implementation contained in files cgjsapi.jar and cgjsapi170.dll
>> Initializing Cloudgarden's JSAPI 1.0, version 1.7.0
>> Free for personal use only.
>> Any form of commercial, corporate or institutional use requires purchase of a
license.
>> Please visit http://www.cloudgarden.com for details.
java.lang.NullPointerException
at SpeechToTextConverter.main(SpeechToTextConverter.java:33)

>> Shutting down Cloudgarden's JSAPI 1.0 version 1.7.0

please help me to solve the problem i am new to the speech api

[Ulf Dittmer]

So which object is null - my guess would be "recognizer". If so, check the javadocs to see under which circumstances "Central.createRecognizer(desc)" can return null.

[Dinesh Raju]

Ulf Dittmer wrote:So which object is null - my guess would be "recognizer". If so, check the javadocs to see under which circumstances "Central.createRecognizer(desc)" can return null.

thanks for your reply

Correct Central.createRecognizer method only returns null ...
i tried with Java doc examples to load recognizer but it always return null

[Ulf Dittmer]

The javadocs state:

a recognizer matching the required properties or null if none is available

So it would seem that no speech recognizer is available. Does the recognizer you're trying to use come with examples or instructions of how to run it? That's where I would start.

[Dinesh Raju]

i follow the post to install apli