Abstract
Mitsubishi Electric Corporation has been developing speech applications for 20 years. Our main targets are car navigation systems, elevator-controlling systems, and other industrial devices. This chapter deals with automatic speech recognition technologies which were developed for these applications. To realize real-time processing with small resources, syllable N-gram-based text search is proposed. To deal with reverberant environments in elevators, spectral-subtraction-based dereverberation techniques with reverberation time estimation are used. In addition, discriminative methods for acoustic and language models are developed.
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Tachioka, Y., Hanazawa, T., Narita, T., Ishii, J. (2017). Advanced ASR Technologies for Mitsubishi Electric Speech Applications. In: Watanabe, S., Delcroix, M., Metze, F., Hershey, J. (eds) New Era for Robust Speech Recognition. Springer, Cham. https://doi.org/10.1007/978-3-319-64680-0_20
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DOI: https://doi.org/10.1007/978-3-319-64680-0_20
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