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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F11%3A00363068" target="_blank" >RIV/61388998:_____/11:00363068 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985882:_____/11:00363068

Výsledek na webu

<a href="http://dx.doi.org/10.2478/v10048-011-0017-y" target="_blank" >http://dx.doi.org/10.2478/v10048-011-0017-y</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2478/v10048-011-0017-y" target="_blank" >10.2478/v10048-011-0017-y</a>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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 spectrogramand mean periodogram methods.

Název v anglickém jazyce

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

Popis výsledku anglicky

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 spectrogramand mean periodogram methods.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BI - Akustika a kmity

OECD FORD obor

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Projekt

<a href="/cs/project/GA102%2F09%2F0989" target="_blank" >GA102/09/0989: Nové perspektivní metody vysoce kvalitní syntézy mluvené češtiny</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Measurement Science Review

ISSN

1335-8871

e-ISSN

—

Svazek periodika

11

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

SK - Slovenská republika

Počet stran výsledku

7

Strana od-do

92-98

Kód UT WoS článku

000293837500004

EID výsledku v databázi Scopus

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