Taxa de elocução e taxa de articulação em corpus utilizado na perícia de Comparação de Locutores
DOI:
https://doi.org/10.15448/1984-7726.2017.1.25540Palavras-chave:
Taxa de elocução, Taxa de articulação, Fonética forense, Comparação de LocutoresResumo
Neste estudo verificou-se a taxa de elocução (TE) e de articulação (TA), bem como a adequação do uso dessas medidas temporais na perícia de Comparação de Locutores. Calculou-se a TE/TA global e local média nas amostras de fala espontânea questionada (interceptações telefônicas judicialmente autorizadas realizadas sem a ciência dos locutores) e padrão (entrevista semidirigida gravada com o consentimento dos locutores) de sete falantes nativos do português brasileiro, de ambos os sexos, com idades entre 14 e 33 anos. Definiu-se o potencial individualizante da TE/TA e a relação entre essas e as variáveis independentes idade, sexo, escolaridade, tempo transcorrido entre as amostras (gap temporal), tipo de gravação e tamanho do intervalo de fala. Como resultado obteve-se coeficiente de correlação intraclasse satisfatório associado à TA, diferença significativa quanto à ciência da gravação na TE e correlação significativa entre gap temporal e TA e entre tamanho do intervalo de fala e TE.
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Speech rate and articulation rate in corpus used in the forensic Speaker Comparison
Abstract: This study examined the speech rate (SR) and the articulation rate (AR), as well as the appropriateness of the use of these temporal measures in the forensic Speaker Comparison. The global and local mean SR/AR in spontaneous speech samples – obtained from unaware audio recordings (legally authorized telephone interceptions) and known ones (semistructured interview) – from seven native speakers of Brazilian Portuguese, of both sexes, aged between 14 and 33 years were considered. The speaker-discriminating power of SR and AR and the relationship between rates and the independent variables age, sex, formal education, temporal gap between the recordings, type of recording, length of speech stretch were defined. As a result we obtained satisfactory intraclass correlation coefficient for the AR, significant difference between the factors of the variable type of recording in SR and significant correlation between temporal gap and AR and between length of speech stretch and SR.
Keywords: Speech rate; Articulation rate; Forensic phonetics; Speaker Comparison
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