extendedunitstate.java

来自「It is the Speech recognition software. 」· Java 代码 · 共 55 行

/*
 * Copyright 1999-2002 Carnegie Mellon University.  
 * Portions Copyright 2002 Sun Microsystems, Inc.  
 * Portions Copyright 2002 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 edu.cmu.sphinx.linguist.flat;

import edu.cmu.sphinx.linguist.acoustic.Unit;

/**
 * A unit state that modifies how the unit state is cached.  Caching
 * keys are generated from the full name for the sentence hmm. The
 * default behavior for the unit (and all sentence hmms) is to
 * generate the full name by combining the name for this unit with the
 * name of the parent.  For the simple linguist, this is undesirable,
 * because there are many different names for the parent
 * pronunciations (differing contexts).  We want to be able to combine
 * units that have identical names and context and are in the same
 * position in the same pronunciation.  By defining getFullName to
 * combine the name and the pronunciation index we allow units with
 * identical contexts in the same position in a pronunciation to be
 * combined.
 *
 */
public class ExtendedUnitState extends UnitState {

    /**
     * Creates a UnitState. Gets the left and right contexts from the
     * unit itself.
     *
     * @param parent the parent state
     * @param which the index of the given state
     * @param unit the unit associated with this state
     */
    public ExtendedUnitState(PronunciationState parent, int which,  Unit unit) {
        super(parent, which, unit);
    }

    /**
     * Gets the fullName for this state
     *
     * @return the full name for this state
     */
    public String getFullName() {
        return getName() + " in P" + getParent().getWhich();
    }
}