ASR Systems in Noisy Environment: Analysis and Solutions for Increasing Noise Robustness

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dc.contributor.authorRajnoha, Josef
dc.contributor.authorPollak, Petr
dc.coverage.issue1cs
dc.coverage.volume20cs
dc.date.accessioned2016-02-26T08:17:25Z
dc.date.available2016-02-26T08:17:25Z
dc.date.issued2011-04cs
dc.description.abstractThis paper deals with the analysis of Automatic Speech Recognition (ASR) suitable for usage within noisy environment and suggests optimum configuration under various noisy conditions. The behavior of standard parameterization techniques was analyzed from the viewpoint of robustness against background noise. It was done for Melfrequency cepstral coefficients (MFCC), Perceptual linear predictive (PLP) coefficients, and their modified forms combining main blocks of PLP and MFCC. The second part is devoted to the analysis and contribution of modified techniques containing frequency-domain noise suppression and voice activity detection. The above-mentioned techniques were tested with signals in real noisy environment within Czech digit recognition task and AURORA databases. Finally, the contribution of special VAD selective training and MLLR adaptation of acoustic models were studied for various signal features.en
dc.formattextcs
dc.format.extent74-84cs
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRadioengineering. 2011, vol. 20, č. 1, s. 74-84. ISSN 1210-2512cs
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/11012/56801
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofRadioengineeringcs
dc.relation.urihttp://www.radioeng.cz/fulltexts/2011/11_01_074_084.pdfcs
dc.rightsCreative Commons Attribution 3.0 Unported Licenseen
dc.rights.accessopenAccessen
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/en
dc.subjectRobust speech recognitionen
dc.subjectrobust ASRen
dc.subjectfront-enden
dc.subjectparameterizationen
dc.subjectfeature extractionen
dc.subjectnoisy speechen
dc.subjectspectral subtractionen
dc.subjectvoice activity detectionen
dc.titleASR Systems in Noisy Environment: Analysis and Solutions for Increasing Noise Robustnessen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.affiliatedInstitution.facultyFakulta eletrotechniky a komunikačních technologiícs
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