5th International Conference on Spoken Language Processing

Sydney, Australia
November 30 - December 4, 1998

Comparative Experiments to Evaluate a Voiced-Unvoiced-Based Pre-Processing Approach to Robust Automatic Speech Recognition in Low-SNR Environments

Hesham Tolba, Douglas O'Shaughnessy

INRS-Telecommunications, Canada

This paper presents an evaluation of a robust Voiced-Unvoiced-based large-vocabulary Continuous-Speech Recognition (CSR) system in the presence of highly interfering noise. Comparative experiments have indicated that the inclusion of an accurate Voiced-Unvoiced (V-U) classifier in our design of a CSR system improves the performance of such a recognizer, for speech contaminated by both additive Gaussian and uniform noises. Our results show that the V-U-based CSR system outperforms the CMS-based and the RASTA-PLP-based CSR systems in such environments for a wide range of SNRs.

Full Paper

Bibliographic reference.  Tolba, Hesham / O'Shaughnessy, Douglas (1998): "Comparative experiments to evaluate a voiced-unvoiced-based pre-processing approach to robust automatic speech recognition in low-SNR environments", In ICSLP-1998, paper 0341.