Speech recognition in SRI's resource management and ATIS systems
HLT '91 Proceedings of the workshop on Speech and Natural Language
Analog implementations of auditory models
HLT '91 Proceedings of the workshop on Speech and Natural Language
Recognition of noisy speech: using minimum-mean log-spectral distance estimation
HLT '90 Proceedings of the workshop on Speech and Natural Language
Acoustical and environmental robustness in automatic speech recognition
Acoustical and environmental robustness in automatic speech recognition
Spectral estimation for noise robust speech recognition
HLT '89 Proceedings of the workshop on Speech and Natural Language
HLT '91 Proceedings of the workshop on Speech and Natural Language
DARPA February 1992 ATIS benchmark test results
HLT '91 Proceedings of the workshop on Speech and Natural Language
SRI international results February 1992 ATIS benchmark test
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
Efficient cepstral normalization for robust speech recognition
HLT '93 Proceedings of the workshop on Human Language Technology
Progressive-search algorithms for large-vocabulary speech recognition
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
Microphone-independent robust signal processing using probabilistic optimum filtering
HLT '94 Proceedings of the workshop on Human Language Technology
ICASSP'93 Proceedings of the 1993 IEEE international conference on Acoustics, speech, and signal processing: speech processing - Volume II
Subband or cepstral domain filtering for recognition of Lombard and channel-distorted speech
ICASSP'93 Proceedings of the 1993 IEEE international conference on Acoustics, speech, and signal processing: speech processing - Volume II
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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Speech recognition systems tend to be sensitive to unimportant steady-state variation in speech spectra (i.e. those caused by varying the microphone or channel characteristics). There have been many attempts to solve this problem; however, these techniques are often computationally burdensome, especially for real-time implementation. Recently, Hermansy et al. [1] and Hirsch et al. [2] have suggested a simple technique that removes slow-moving linear channel variation with little adverse effect on speech recognition performance. In this paper we examine this technique, known as RASTA filtering, and evaluate its performance when applied to SRI's DECIPHER™ speech recognition system [3]. We show that RASTA filtering succeeds in reducing DECIPHER™'s dependence on the channel.