edu.cmu.sphinx.trainer

Class BuildTranscriptHMM

java.lang.Object

edu.cmu.sphinx.trainer.BuildTranscriptHMM

public class BuildTranscriptHMM
extends java.lang.Object

This class builds an HMM from a transcript, at increasing levels of details.

Constructor Summary

Constructors

Constructor and Description
BuildTranscriptHMM(java.lang.String context, Transcript transcript, AcousticModel acousticModel, UnitManager unitManager) Constructor for class BuildTranscriptHMM.

Method Summary

Modifier and Type	Method and Description
Graph	buildContextDependentPhonemeGraph(Graph phonemeGraph) Convert phoneme graph to a context sensitive phoneme graph.
Graph	buildHMMGraph(Graph cdGraph) Convert the phoneme graph to an HMM.
Graph	getGraph() Returns the graph.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BuildTranscriptHMM

public BuildTranscriptHMM(java.lang.String context,
                          Transcript transcript,
                          AcousticModel acousticModel,
                          UnitManager unitManager)

Constructor for class BuildTranscriptHMM. When called, this method creates graphs for the transcript at several levels of detail, subsequently mapping from a word graph to a phone graph, to a state graph.

Parameters:

context - this object's context

transcript - the transcript to be converted to HMM

acousticModel - the acoustic model to be used

unitManager - the manager for units

Method Detail

getGraph

public Graph getGraph()

Returns the graph.

Returns:

the graph.

buildContextDependentPhonemeGraph

public Graph buildContextDependentPhonemeGraph(Graph phonemeGraph)

Convert phoneme graph to a context sensitive phoneme graph. This graph expands paths out to have separate phoneme nodes for phonemes in different contexts.

Parameters:

phonemeGraph - the phoneme graph

Returns:

a context dependendent phoneme graph

buildHMMGraph

public Graph buildHMMGraph(Graph cdGraph)

Convert the phoneme graph to an HMM.

Parameters:

cdGraph - a context dependent phoneme graph

Returns:

an HMM graph for a context dependent phoneme graph