livemapconfidencetest.java

It is the Speech recognition software. It is platform independent. To execute the source code,

/*
 * Copyright 1999-2004 Carnegie Mellon University.
 * Portions Copyright 2004 Sun Microsystems, Inc.
 * Portions Copyright 2004 Mitsubishi Electric Research Laboratories.
 * All Rights Reserved.  Use is subject to license terms.
 *
 * See the file "license.terms" for information on usage and
 * redistribution of this file, and for a DISCLAIMER OF ALL
 * WARRANTIES.
 *
 */
package tests.result.lattice;

import edu.cmu.sphinx.frontend.util.Microphone;

import edu.cmu.sphinx.recognizer.Recognizer;

import edu.cmu.sphinx.result.ConfidenceResult;
import edu.cmu.sphinx.result.ConfidenceScorer;
import edu.cmu.sphinx.result.Lattice;
import edu.cmu.sphinx.result.LatticeOptimizer;
import edu.cmu.sphinx.result.MAPConfidenceScorer;
import edu.cmu.sphinx.result.Path;
import edu.cmu.sphinx.result.Result;
import edu.cmu.sphinx.result.WordResult;

import edu.cmu.sphinx.util.props.ConfigurationManager;
import edu.cmu.sphinx.util.props.PropertyException;

import java.io.File;
import java.io.IOException;
import java.net.URL;

import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.UnsupportedAudioFileException;

public class LiveMAPConfidenceTest {

    /**
     * Main method for running the MAPConfidenceTest demo.
     */
    public static void main(String[] args) {
        try {            
            URL configURL = new File("./config.xml").toURI().toURL();

            System.out.println("Loading Recognizer...\n");

            ConfigurationManager cm = new ConfigurationManager(configURL);
	    Recognizer recognizer = (Recognizer) cm.lookup("recognizer");

            /* allocate the resource necessary for the recognizer */
            recognizer.allocate();

	    Microphone microphone = (Microphone) cm.lookup("microphone");

            if (microphone.startRecording()) {

                while (true) {
                    /* decode the audio file */
                    Result result = recognizer.recognize();
                    
                    /* print out the results */
                    if (result != null) {

                        System.out.println("Best result: " + result.toString());
                        ConfidenceScorer cs = (ConfidenceScorer) cm.lookup
                            ("confidenceScorer");
                        ConfidenceResult cr = cs.score(result);
                        Path best = cr.getBestHypothesis();
                        
                        /*
                         * print out confidence of individual words 
                         * in the best path
                         */
                        WordResult[] words = best.getWords();
                        for (int i = 0; i < words.length; i++) {
                            WordResult wr = (WordResult) words[i];
                            System.out.println
                                (wr.getPronunciation().getWord().getSpelling());
                            System.out.println
                                ("   (confidence: " +
                                 wr.getLogMath().logToLinear((float)wr.getConfidence()) + ")");
                        }
                        System.out.println();

                        /* confidence of the best path */
                        System.out.println(best.getTranscription());
                        System.out.println
                            ("   (confidence: " +
                             best.getLogMath().logToLinear((float)best.getConfidence()) + ")");
                        System.out.println();
                    }
                }
            }
        } catch (IOException e) {
            System.err.println("Problem when loading MAPConfidenceTest: " + e);
            e.printStackTrace();
        } catch (PropertyException e) {
            System.err.println("Problem configuring MAPConfidenceTest: " + e);
            e.printStackTrace();
        } catch (InstantiationException e) {
            System.err.println("Problem creating MAPConfidenceTest: " + e);
            e.printStackTrace();
        }
    }
}