A template matcher for robust NL interpretation
HLT '91 Proceedings of the workshop on Speech and Natural Language
Improved hidden Markov modeling for speaker-independent continuous speech recognition
HLT '90 Proceedings of the workshop on Speech and Natural Language
Training set issues in SRI's DECIPHER speech recognition system
HLT '90 Proceedings of the workshop on Speech and Natural Language
Automatic detection of new words in a large vocabulary continuous speech recognition system
HLT '89 Proceedings of the workshop on Speech and Natural Language
Multi-site data collection for a spoken language corpus
HLT '91 Proceedings of the workshop on Speech and Natural Language
HLT '91 Proceedings of the workshop on Speech and Natural Language
Reduced channel dependence for speech recognition
HLT '91 Proceedings of the workshop on Speech and Natural Language
A relaxation method for understanding spontaneous speech utterances
HLT '91 Proceedings of the workshop on Speech and Natural Language
Spontaneous speech effects in large vocabulary speech recognition applications
HLT '91 Proceedings of the workshop on Speech and Natural Language
Performance of SRI's DECIPHER™ speech recognition system on DARPA's CSR task
HLT '91 Proceedings of the workshop on Speech and Natural Language
Progressive-search algorithms for large-vocabulary speech recognition
HLT '93 Proceedings of the workshop on Human Language Technology
On the use of tied-mixture distributions
HLT '93 Proceedings of the workshop on Human Language Technology
Improved keyword-spotting using SRI's DECIPHER™ large-vocabuarly speech-recognition system
HLT '93 Proceedings of the workshop on Human Language Technology
A speech to speech translation system built from standard components
HLT '93 Proceedings of the workshop on Human Language Technology
Subphonetic modeling with Markov states: senone
ICASSP'92 Proceedings of the 1992 IEEE international conference on Acoustics, speech and signal processing - Volume 1
Robust parsing for spoken language systems
ICASSP'92 Proceedings of the 1992 IEEE international conference on Acoustics, speech and signal processing - Volume 1
ICASSP'93 Proceedings of the 1993 IEEE international conference on Acoustics, speech, and signal processing: speech processing - Volume II
Keyword-spotting using SRI's DECIPHERTM large-vocabulary speech-recognition system
ICASSP'93 Proceedings of the 1993 IEEE international conference on Acoustics, speech, and signal processing: speech processing - Volume II
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This paper describes improvements to DECIPHER, the speech recognition component in SRI's Air Travel Information Systems (ATIS) and Resource Management systems. DECIPHER is a speaker-independent continuous speech recognition system based on hidden Markov model (HMM) technology. We show significant performance improvements in DECIPHER due to (1) the addition of tied-mixture HMM modeling (2) rejection of out-of-vocabulary speech and background noise while continuing to recognize speech (3) adapting to the current speaker (4) the implementation of N-gram statistical grammars with DECIPHER. Finally we describe our performance in the February 1991 DARPA Resource Management evaluation (4.8 percent word error) and in the February 1991 DARPA-ATIS speech and SLS evaluations (95 sentences correct, 15 wrong of 140). We show that, for the ATIS evaluation, a well-conceived system integration can be relatively robust to speech recognition errors and to linguistic variability and errors.