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Authors: Tatiane Melo Vital and Carlos Alberto Ynoguti

Affiliation: Instituto Nacional de Telecomunicações, Brazil

ISBN: 978-989-758-011-6

Keyword(s): Robust Speech Recognition, HMM, Model Compensation, MAP.

Related Ontology Subjects/Areas/Topics: Acoustic Signal Processing ; Biomedical Engineering ; Biomedical Signal Processing ; Speech Recognition

Abstract: The accuracy of speech recognition systems degrades severely when operating in noisy environments, mainly due to the mismatch between training and testing environmental conditions. The use of noise corrupted training utterances is being used with success in many works. However, as the type and intensity of the noise at operation time is unpredictable, the present work proposes a step beyond: the use of the MAP method to use samples of the actual audio signal that is being processed to adapt such systems to the real noise condition. Experimental results show an increase of almost 2% on average in the recognition rates, when compared to systems trained with noisy utterances.

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Paper citation in several formats:
Melo Vital, T. and Alberto Ynoguti, C. (2014). Model Adaptation via MAP for Speech Recognition in Noisy Environments.In Proceedings of the International Conference on Bio-inspired Systems and Signal Processing - Volume 1: BIOSIGNALS, (BIOSTEC 2014) ISBN 978-989-758-011-6, pages 91-96. DOI: 10.5220/0004718400910096

@conference{biosignals14,
author={Tatiane Melo Vital. and Carlos Alberto Ynoguti.},
title={Model Adaptation via MAP for Speech Recognition in Noisy Environments},
booktitle={Proceedings of the International Conference on Bio-inspired Systems and Signal Processing - Volume 1: BIOSIGNALS, (BIOSTEC 2014)},
year={2014},
pages={91-96},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0004718400910096},
isbn={978-989-758-011-6},
}

TY - CONF

JO - Proceedings of the International Conference on Bio-inspired Systems and Signal Processing - Volume 1: BIOSIGNALS, (BIOSTEC 2014)
TI - Model Adaptation via MAP for Speech Recognition in Noisy Environments
SN - 978-989-758-011-6
AU - Melo Vital, T.
AU - Alberto Ynoguti, C.
PY - 2014
SP - 91
EP - 96
DO - 10.5220/0004718400910096

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