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Title: US6185530: Apparatus and methods for identifying potential acoustic confusibility among words in a speech recognition system
[ Derwent Title ]


Country: US United States of America

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12 pages

 
Inventor: Ittycheriah, Abraham; Danbury, CT
Maes, Stephane H.; Danbury, CT

Assignee: International Business Machines Corporation, Armonk, NY
other patents from INTERNATIONAL BUSINESS MACHINES CORPORATION (280070) (approx. 44,393)
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Published / Filed: 2001-02-06 / 1998-08-14

Application Number: US1998000134582

IPC Code: Advanced: G10L 15/10;
IPC-7: G06P 17/00; G10L 5/06; G10L 9/00;

ECLA Code: G10L15/10;

U.S. Class: Current: 704/255; 704/243; 704/251; 704/E15.015; 707/999.005; 707/999.006;
Original: 704/255; 704/251; 704/243; 707/005; 707/006;

Priority Number:
1998-08-14  US1998000134582

Abstract:     A method of determining potential acoustic confusion between at least one new word and at least a portion of existing words of a vocabulary of a speech recognition engine comprises the steps of: a user inputting the at least one new word; computing respective measures between the at least one new word and the at least a portion of existing vocabulary words, the respective measures indicative of acoustic similarity between the at least one word and the at least a portion of existing words; if at least one measure is within a threshold range, indicating results associated with the at least one measure and prompting the user to input an alternative word or additional information pertaining to the at least one new word; and if no measure is within the threshold range, adding the at least one new word to the vocabulary.

Attorney, Agent or Firm: F. Chau & Associates, LLP ;

Primary / Asst. Examiners: Zele, Krista; Sax, Robert Louis

INPADOC Legal Status: Show legal status actions

Parent Case:

CROSS REFERENCE TO RELATED APPLICATIONS
    This application is being filed concurrent with U.S. patent application docket no. YO998-045 (728-108) entitled "APPARATUS AND METHODS FOR IDENTIFYING HOMOPHONES AMONG WORDS IN A SPEECH RECOGNITION SYSTEM" and U.S. patent application docket no. YO998-046 (728-109) entitled "APPARATUS AND METHODS FOR REJECTING CONFUSIBLE WORDS DURING TRAINING ASSOCIATED WITH A SPEECH RECOGNITION SYSTEM".

Family: None

First Claim:
Show all 29 claims
What is claimed is:     1. A method for adding words to a vocabulary of a speech recognition engine, the method comprising the steps of:
  • (a) inputting at least one new word;
  • (b) computing an acoustic similarity measure between the at least one new word and each word of at least a portion of existing vocabulary words, wherein the step of computing an acoustic similarity measure comprises the steps of:
    • computing a leaf sequence for the at least one new word;
    • comparing the leaf sequence for the at least one new word to respective leaf sequences associated with the at least a portion of the existing words; and
    • generating respective distance measures in response to the comparisons, the respective distance measures indicative of acoustic distances between the compared leaf sequences, wherein the respective distance measures are calculated via a Kuhlback-Liebler distance metric;
  • (c) if at least one of the computed acoustic similarity measures is within a threshold range, identifying the at least one new word as being potentially acoustically confusing with an existing vocabulary word, indicating results associated with the at least one computed acoustic similarity measure and prompting a user to input an alternative word or additional information pertaining to the at least one new word; and
  • (d) if none of the computed acoustic similarity measures are within the threshold range, adding the at least one new word to the vocabulary.


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Forward References: Show 25 U.S. patent(s) that reference this one

       
U.S. References: Go to Result Set: All U.S. references   |  Forward references (25)   |   Backward references (17)   |   Citation Link

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Get PDF - 10pp US6023673  2000-02 Bakis et al.  International Business Machines Corporation Hierarchical labeler in a speech recognition system
       
Foreign References: None

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