About: Hierarchical classification tree modeling of nonstationary noise for robust speech recognition

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Noise robustness is a key issue in successful deployment of automatic speech recognition systems in demanding environments such as hospital operating rooms. Perhaps the most successful way to overcome the additive noise obstacle is to employ a model adaptation scheme built around a set of dedicated clean speech and noise-only statistical models. Existing recognizer designs generally rely on relatively simple noise models, as more detailed ones would increase computational demands significantly. Simple models are, however, unable to provide accurate characterization of highly nonstationary noise present in real-world noisy facilities and thereby provide only limited reduction in error rate of the recognizer. The present article describes a novel approach to nonstationary acoustical noise modeling via a set of hierarchically tied hidden Markov models in a classification tree structure. Proposed statistical structure allows detailed description of nonstationary ambient acoustical noise while maintaining Noise robustness is a key issue in successful deployment of automatic speech recognition systems in demanding environments such as hospital operating rooms. Perhaps the most successful way to overcome the additive noise obstacle is to employ a model adaptation scheme built around a set of dedicated clean speech and noise-only statistical models. Existing recognizer designs generally rely on relatively simple noise models, as more detailed ones would increase computational demands significantly. Simple models are, however, unable to provide accurate characterization of highly nonstationary noise present in real-world noisy facilities and thereby provide only limited reduction in error rate of the recognizer. The present article describes a novel approach to nonstationary acoustical noise modeling via a set of hierarchically tied hidden Markov models in a classification tree structure. Proposed statistical structure allows detailed description of nonstationary ambient acoustical noise while maintaining (en)
Title	Hierarchical classification tree modeling of nonstationary noise for robust speech recognition Hierarchical classification tree modeling of nonstationary noise for robust speech recognition (en)
skos:prefLabel	Hierarchical classification tree modeling of nonstationary noise for robust speech recognition Hierarchical classification tree modeling of nonstationary noise for robust speech recognition (en)
skos:notation	RIV/00216305:26220/10:PU88268!RIV11-GA0-26220___
http://linked.open...avai/riv/aktivita	P R S Z
http://linked.open...avai/riv/aktivity	P(GD102/08/H027), R, S, Z(MSM0021630513)
http://linked.open...iv/cisloPeriodika	3
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Sigmund, Milan Zelinka, Petr
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Vysoké učení technické v Brně / Fakulta elektrotechniky a komunikačních technologií
http://linked.open...dnocenehoVysledku	261480
http://linked.open...ai/riv/idVysledku	RIV/00216305:26220/10:PU88268
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	speech recognition, hidden Markov models, classification tree (en)
http://linked.open.../riv/klicoveSlovo	hidden Markov models speech recognition classification tree
http://linked.open...odStatuVydavatele	LT - Litevská republika
http://linked.open...ontrolniKodProRIV	[72E53EEF175E]
http://linked.open...i/riv/nazevZdroje	Information Technology and Control
http://linked.open...in/vavai/riv/obor	BB
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Advanced Methods, Structures and Components of Electronic Wireless Communication
http://linked.open...UplatneniVysledku	2010
http://linked.open...v/svazekPeriodika	39
http://linked.open...iv/tvurceVysledku	Sigmund, Milan Zelinka, Petr
http://linked.open...n/vavai/riv/zamer	Advanced Electronic Communication Systems and Technologies (ELCOM)
issn	1392-124X
number of pages	9 (xsd:int)
http://localhost/t...ganizacniJednotka	26220
is http://linked.open...avai/riv/vysledek of	Hierarchical classification tree modeling of nonstationary noise for robust speech recognition

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