Patent · US Expired

Method for constructing a model of a new word for addition to a word model database of a speech recognition system

US5873061A · kind A · utility

35Cited by

14References

4Claims

0Family size

Assignee

U.S. Philips Corporation · US

Inventors

Reinhold Hab-Umbach · Aachen, DE
Peter Beyerlein · Aachen, DE
Eric Thelen · Aachen, DE

Key dates

Filing date	May 2, 1996
Grant date	Feb 16, 1999
Priority date	—
Expiry date	May 2, 2016

Classification

Technology area (CPC G)Physics
CPC primaryG10L15/144
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

For speech recognition a new word is represented as based on a stored inventory of models of sub-word units. First a plurality of utterances are presented that all should conform to the word. For building a word model from the utterances, these are represented by a sequence of feature vectors. First, the utterances are used to train a whole-word model that is independent of the models of the sub-word units. The length of the whole-word model equals the average length of the utterances. Next, a sequence of Markov states and associated probability densities of acoustic events of the whole-word model is interpreted as a reference template represented by a string of averaged feature vectors. Finally, the string is recognized by matching to models in the inventory and storing a recognition result as a model of the utterances.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.