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Resumo: muitos adultos aprendizes de uma L2 possuem algum grau de sotaque. Contribui para esse sotaque a nao adequada realizacao do acento tonico (AT), que tem papel preponderante para a estruturacao prosodica da fala. 24 falantes do portugues brasileiro (PB) de quatro niveis autorreferidos de ingles americano (IA) participaram de testes de producao e percepcao de AT. Os dados acusticos de producao dos participantes, assim como os escores na marcacao da posicao acentual foram coletados e comparados com um sujeito nativo. Os parâmetros acusticos de maior relevância para a realizacao do AT dos falantes do PB foram a duracao, intensidade total e intensidade relativa das silabas acentuadas. Os escores de percepcao foram maiores do que os de producao, de modo geral. As palavras com acento inicial foram as que tiveram maior numero de acertos tanto na producao quanto na percepcao. Os falantes nativos do PB de todos os niveis empregam os mesmos parâmetros acusticos de acentuacao da L1 no IA, sendo que estes tendem a se aproximar dos do nativo a medida em que o nivel de ingles aumenta. O cognatismo nao foi relevante para o uso dos parâmetros acusticos empregados na marcacao do acento, mas influenciou os escores da posicao acentual. Palavras-chave: sotaque estrangeiro; acento tonico; fonetica acustica. Abstract: many adults who learn a second language have a foreign accent to some extent. The misproduction of lexical stress (LS), which plays an important role in the prosodic structure of speech, contributes to the perception of a heavier foreign accent. Twenty-four Brazilian Portuguese (BP) speakers of English of four different self-reported levels underwent tests of production and perception of LS. This study aimed to describe how production and perception of lexical stress happen to BP speakers of four different self-reported levels. Acoustic data, as well as the percentage of scores in stress placement, were collected and compared to the production of a native speaker of American English (AmE). Syllable duration, total intensity, and relative intensity were the most important parameters used by the BP speakers to stress syllables. Hits in the perception task were greater than the production task, overall. Initially stressed words had the greatest hits in both production and perception. Overall, the BP speakers from this use, in AmE, the same acoustic parameters used in BP for signaling LS. The production, in regards of acoustic parameters use, gets closer to the native when the proficiency level increases. Cognate words were not relevant in the acoustic parameters choice of the speakers, but they were relevant for the stress position hits. Keywords: foreign accent; lexical stress; acoustic phonetics.

revista de estudos da linguagem

Desvendando a prosódia do sotaque estrangeiro: produção e percepção do acento tônico no inglês por falantes brasileiros / Unraveling foreign accent prosody: production and perception of lexical stress in English by Brazilian Portuguese speakers