Descrição Fonética do Disfarce por Modulação da Altura Tonal ( Pitch ): Um Estudo Piloto

Περίληψη

Nas tipologias tradicionais, estratégias de disfarce que envolvem o aumento ou a diminuição da frequência fundamental (F₀) costumam ser classificadas como modificações da fonte glótica. No entanto, essa categorização ignora que o disfarce vocal constitui, em essência, uma forma de alteração da qualidade de voz. Conforme o modelo fonético proposto por Laver (1980), a qualidade vocal não se restringe à vibração das pregas vocais, mas resulta de um conjunto integrado de ajustes fonatórios, articulatórios e de tensão muscular — os chamados settings — que moldam sistematicamente o perfil vocal de um indivíduo, em curto e longo prazo. O objetivo deste trabalho é investigar os ajustes articulatórios envolvidos nesse tipo de disfarce, de modo a descrevê-lo foneticamente dentro do arcabouço teórico da qualidade de voz. Para quantificar tais settings, foram adotadas duas métricas principais: o comprimento do trato vocal estimado (CTVe) e a área do espaço vocálico.

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Πνευματική ιδιοκτησία (c) 2026 Revista Brasileira de Criminalística

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Συγγραφέας (ες)

  • Albuquerque da Silva,

    • Albuquerque da Silva

    Universidade de São Paulo

    Foneticista Forense do Instituto de Criminalística de São Paulo

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