Identificação de falante a partir de fala sussurrada
DOI:
https://doi.org/10.15448/1984-7726.2017.1.26659Palabras clave:
Sociofonética, Fonética Forense, SussurroResumen
Os métodos e achados sociofonéticos são valiosos para aplicação a questões da vida real, como no fornecimento de evidência forense pericial em casos legais. Os casos forenses envolvem vozes que se diferem marcadamente daquelas tipicamente encontradas em laboratório ou estudos de campo. Avaliamos a habilidade de pessoas de identificar vozes familiares produzidas de forma sussurrada, uma estratégia de disfarce comumente utilizada. Membros de uma rede social pré-existente foram gravados falando normalmente e de forma sussurrada. Os falantes consideraram difícil manter o sussurro por mais do que 30 segundos. Esses falantes e outros membros do grupo ouviram trechos que foram (i) curtos e sussurrados; (ii) longos e sussurrados e (iii) curtos e normais (não sussurrados). Distratores foram incluídos. A performance foi bem acima do acaso e melhorou significativamente nas condições (ii) e (iii). Diferenças foram encontradas entre falantes e vozes. O estudo enfatiza o quanto é importante não supergeneralizar a partir de dados experimentais quanto à habilidade da testemunha sob condições forenses.
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