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

Result code in 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>

Alternative codes found

RIV/67985882:_____/11:00363068

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language 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 spectrogramand mean periodogram methods.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BI - Acoustics and oscillation

OECD FORD branch

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Project

<a href="/en/project/GA102%2F09%2F0989" target="_blank" >GA102/09/0989: New innovative methods for high-quality synthesis of Czech speech</a><br>

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2011

Confidentiality

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

Name of the periodical

Measurement Science Review

ISSN

1335-8871

e-ISSN

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Volume of the periodical

11

Issue of the periodical within the volume

3

Country of publishing house

SK - SLOVAKIA

Number of pages

7

Pages from-to

92-98

UT code for WoS article

000293837500004

EID of the result in the Scopus database

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