com.sun.speech.freetts.cart
Class Durator

java.lang.Object
  com.sun.speech.freetts.cart.Durator

All Implemented Interfaces:

UtteranceProcessor

public class Durator

extends java.lang.Object

implements UtteranceProcessor

Determines duration timing for Relation.SEGMENT relations in an utterance. Annotates the Relation.SEGMENT relation with an "end" time feature.

[[[TODO: The mean words-per-minute rate should become part of the CART data. For now, it is passed into the constructor.]]]

See Also:

Relation.SEGMENT

Field Summary

protected CART	cart The CART used for this duration UtteranceProcessor.
protected PhoneDurations	durations The PhoneDurations used for this duration UtteranceProcessor.

Constructor Summary

Durator(CART cart, float meanRate, PhoneDurations durations)
Creates a new duration UtteranceProcessor with the given CART and phone durations.

Method Summary

void	processUtterance(Utterance utterance) Annotates the Relation.SEGMENT relations with cumulative "end" time features based on phone durations.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

cart

protected CART cart

The CART used for this duration UtteranceProcessor. It is passed into the constructor.

durations

protected PhoneDurations durations

The PhoneDurations used for this duration UtteranceProcessor. It is passed into the constructor.

Constructor Detail

Durator

public Durator(CART cart,
               float meanRate,
               PhoneDurations durations)

Creates a new duration UtteranceProcessor with the given CART and phone durations.

Parameters:

cart - contains zscore duration data

meanRate - the mean words per minute rate of the CART data

durations - contains mean and standard deviation phone durations

Method Detail

processUtterance

public void processUtterance(Utterance utterance)
                      throws ProcessException

Annotates the Relation.SEGMENT relations with cumulative "end" time features based on phone durations. Expects the CART to return a zscore for each phone, which specifies the number of standard deviations from the mean. This is coupled with a phone durations table that returns the mean and standard deviation for phones.

Specified by:

processUtterance in interface UtteranceProcessor

Parameters:

utterance - the utterance to process

Throws:

ProcessException - if a problem is encountered during the processing of the utterance

toString

public java.lang.String toString()