Improvements and applications for key word recognition using hidden Markov modeling techniques
- 1 January 1991
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- p. 309-312 vol.1
- https://doi.org/10.1109/icassp.1991.150338
Abstract
A hidden Markov model based key wordspotting algorithm developed previously can recognize key words from a predefined vocabulary list spoken in an unconstrained fashion. Improvements in the feature analysis used to represent the speech signal and modeling techniques used to train the system are explored. The authors discuss several task domain issues which influence evaluation criteria. They present results from extensive evaluations on three speaker independent databases: the 20 word vocabulary Stonehenge Road Rally database, distributed by the National Security Agency, a five word vocabulary used to automate operator-assisted calls, and a three word Spanish vocabulary that is currently being tested in Spain's telephone network. Currently, recognition accuracies range from 99.9% on the Spanish database to 74% (with 8.8 FA/H/W) on the Stonehenge task.Keywords
This publication has 8 references indexed in Scilit:
- Keyword recognition using template concatenationPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2005
- Application of hidden Markov models for recognition of a limited set of words in unconstrained speechPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- Isolated word recognition over the DDD telephone network. Results of two extensive field studiesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- A hidden Markov model based keyword recognition systemPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Probabilistic vector mapping of noisy speech parameters for HMM word spottingPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Automatic recognition of keywords in unconstrained speech using hidden Markov modelsIEEE Transactions on Acoustics, Speech, and Signal Processing, 1990
- Isolated and Connected Word Recognition--Theory and Selected ApplicationsIEEE Transactions on Communications, 1981
- Detecting and locating key words in continuous speech using linear predictive codingIEEE Transactions on Acoustics, Speech, and Signal Processing, 1977