Statistical descriptors on the characterization of the Brazilian Portuguese fricatives: Spectral characteristics of fricatives

In this paper, we investigated the spectral characteristics of labiodental, alveolar and postalveolar fricatives of the Brazilian Portuguese in terms of place of articulation and vowel context. We measured the spectral characteristic of fricative noise using the analysis of four spectral moments (ce...

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Bibliographic Details
Authors: Ferreira-Silva, Audineia, Pacheco, Vera, Cagliari, Luiz Carlos
Format: article
Status:Published version
Publication Date:2015
Country:Brasil
Institution:Universidade Estadual de Maringá (UEM)
Repository:Acta Scientiarum. Language and Culture (Online)
Language:Portuguese
English
OAI Identifier:oai:periodicos.uem.br/ojs:article/25149
Online Access:http://www.periodicos.uem.br/ojs/index.php/ActaSciLangCult/article/view/25149
Access Level:Open access
Keyword:spectral characteristics
place of articulation
fricative
características espectrais
ponto de articulação
fricativa.
Fricativas do Português Brasileiro
Description
Summary:In this paper, we investigated the spectral characteristics of labiodental, alveolar and postalveolar fricatives of the Brazilian Portuguese in terms of place of articulation and vowel context. We measured the spectral characteristic of fricative noise using the analysis of four spectral moments (center of gravity, standard deviation, skewness and kurtosis). Our results indicated a significant effect of place of articulation and vowel context on values of spectral moments for fricatives of Brazilian Portuguese. The results show that the fricatives were well differentiated by the center of gravity and standard deviation more than the other spectral moments, skewness and kurtosis.