Utilize este identificador para referenciar este registo:
http://hdl.handle.net/10071/27943
Autoria: | Freitas, J. Teixeira, A. Dias, M. S. |
Editor: | Van Huffel, S., Correia, C., Fred, A., and Gamboa, H. |
Data: | 1-Jan-2012 |
Título próprio: | Towards a silent speech interface for Portuguese: Surface electromyography and the nasality challenge |
Título e volume do livro: | Proceedings of the International Conference on Bio-inspired Systems and Signal Processing - BIOSIGNALS, (BIOSTEC 2012) |
Paginação: | 91 - 100 |
Título do evento: | International Conference on Bio-inspired Systems and Signal Processing, BIOSIGNALS 2012 |
Referência bibliográfica: | Freitas, J., Teixeira, A., & Dias, M. S. (2012). Towards a silent speech interface for Portuguese: Surface electromyography and the nasality challenge. In S. Van Huffel, C. Correia, A. Fred, & H. Gamboa (Eds.), Proceedings of the International Conference on Bio-inspired Systems and Signal Processing - BIOSIGNALS, (BIOSTEC 2012) (pp. 91-100). SciTePress. https://dx.doi.org/10.5220/0003786100910100 |
ISSN: | 2184-4305 |
ISBN: | 978-989-8425-89-8 |
DOI (Digital Object Identifier): | 10.5220/0003786100910100 |
Palavras-chave: | Silent speech Human-computer interface European Portuguese Surface electromyography Nasality |
Resumo: | A Silent Speech Interface (SSI) aims at performing Automatic Speech Recognition (ASR) in the absence of an intelligible acoustic signal. It can be used as a human-computer interaction modality in high-background-noise environments, such as living rooms, or in aiding speech-impaired individuals, increasing in prevalence with ageing. If this interaction modality is made available for users own native language, with adequate performance, and since it does not rely on acoustic information, it will be less susceptible to problems related to environmental noise, privacy, information disclosure and exclusion of speech impaired persons. To contribute to the existence of this promising modality for Portuguese, for which no SSI implementation is known, we are exploring and evaluating the potential of state-of-the-art approaches. One of the major challenges we face in SSI for European Portuguese is recognition of nasality, a core characteristic of this language Phonetics and Phonology. In this paper a silent speech recognition experiment based on Surface Electromyography is presented. Results confirmed recognition problems between minimal pairs of words that only differ on nasality of one of the phones, causing 50% of the total error and evidencing accuracy performance degradation, which correlates well with the exiting knowledge. |
Arbitragem científica: | yes |
Acesso: | Acesso Aberto |
Aparece nas coleções: | ISTAR-CRI - Comunicações a conferências internacionais |
Ficheiros deste registo:
Ficheiro | Tamanho | Formato | |
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conferenceobject_49201.pdf | 904,97 kB | Adobe PDF | Ver/Abrir |
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