About: Two Methods of Mechanical Noise Reduction of Recorded Speech During Phonation in an MRI devic

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The paper presents two methods of noise reduction of speech signal recorded in an MRI device during phonation for the human vocal tract modelling. The applied approach of noise signal cleaning is based on cepstral speech analysis and synthesis because the noise is mainly produced by gradient coils, has a mechanical character, and can be processed in spectral domain. Our first noise reduction method is using real cepstrum limitation and clipping the “peaks corresponding to the harmonic frequencies of mechanical noise. The second method is coming out from substation of the short-time spectra of two signals recorded withal: the first includes speech and noise, and the second consists of noise only. The resulting speech quality was compared by spectrogram and mean periodogram methods. The paper presents two methods of noise reduction of speech signal recorded in an MRI device during phonation for the human vocal tract modelling. The applied approach of noise signal cleaning is based on cepstral speech analysis and synthesis because the noise is mainly produced by gradient coils, has a mechanical character, and can be processed in spectral domain. Our first noise reduction method is using real cepstrum limitation and clipping the “peaks corresponding to the harmonic frequencies of mechanical noise. The second method is coming out from substation of the short-time spectra of two signals recorded withal: the first includes speech and noise, and the second consists of noise only. The resulting speech quality was compared by spectrogram and mean periodogram methods. (en)
Title	Two Methods of Mechanical Noise Reduction of Recorded Speech During Phonation in an MRI devic Two Methods of Mechanical Noise Reduction of Recorded Speech During Phonation in an MRI devic (en)
skos:prefLabel	Two Methods of Mechanical Noise Reduction of Recorded Speech During Phonation in an MRI devic Two Methods of Mechanical Noise Reduction of Recorded Speech During Phonation in an MRI devic (en)
skos:notation	RIV/67985882:_____/11:00363068!RIV12-AV0-67985882
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA102/09/0989), Z(AV0Z20670512), Z(AV0Z20760514)
http://linked.open...iv/cisloPeriodika	3
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Horák, 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	Ústav fotoniky a elektroniky AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	236323
http://linked.open...ai/riv/idVysledku	RIV/67985882:_____/11:00363068
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	speech processing; noise reduction; NMR imaging (en)
http://linked.open.../riv/klicoveSlovo	noise reduction speech processing NMR imaging
http://linked.open...odStatuVydavatele	SK - Slovenská republika
http://linked.open...ontrolniKodProRIV	[6BF374A7C61B]
http://linked.open...i/riv/nazevZdroje	Measurement Science Review
http://linked.open...in/vavai/riv/obor	BI
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	New innovative methods for high-quality synthesis of Czech speech
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	11
http://linked.open...iv/tvurceVysledku	Horák, Petr Horáček, Jaromír Přibil, J.
http://linked.open...ain/vavai/riv/wos	000293837500004
http://linked.open...n/vavai/riv/zamer	Materiály, struktury, systémy a signály v elektronice, optoelektronice a fotonice Complex dynamical systems in thermodynamics, fluid and solid mechanics
issn	1335-8871
number of pages	7 (xsd:int)
http://bibframe.org/vocab/doi	10.2478/v10048-011-0017-y

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