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Made available in DSpace on 2014-08-20T14:24:49Z (GMT). No. of bitstreams: 1 Dissertacao Veronica.pdf: 6053471 bytes, checksum: 680bd51960b4defb1b7d89abebed71b1 (MD5) Previous issue date: 2013-05-21 / The present work investigates of writing acquisition of the falling oral diphthongs [aj], [ej] and [ow] in the town of São José do Norte/RS, as well as the relationship set between the spoken language and the written language in this process. The subjects are in 1st, 2nd, 3rd and 6th grade classes from two public schools, one in the urban area of town and one in the countryside. Three instruments were elaborated for data collection, one for oral collection and two for written collection. The oral collection instrument consists of 62 pictures which were presented to each subject through a computer. Concerning the written data collection, one instrument was elaborated for the 1st, 2nd and 3rd grade students and another for the 6th grade students. For the 1st, 2nd and 3rd grades, the instrument had the image of the pictures shown to them in the computer previously, so that they would write words about these pictures. For the 6th grade students, the instrument presented statements with blanks to be properly completed. The words in the written collection were, therefore, the same in the oral data collection. Linguistic variables were investigated such as following phonological context, morphologic category and stress, as well as extralinguistic variables such as grade, sex, school zone in order to investigate their influence in the process of graphic acquisition of the respective diphthongs. The data description was carried out by using percentages referring to the production and the deletion of glides in these diphthongs. We added, in the data analysis, statistical results, through the application of the SPSS v. 17.0 program, in order to extend the research results to an ampler sample. The results confirm the proposal of Bisol (1989) about the existence of only one vowel element in the mental representation of learners, due to the significant number of reduction found in writing produced in the initial school years. The gradual appropriation of diphthongs in writing, as well as the emergence, in oral language, of the sequences [aj], [ej] and [ow] in subjects from the 3rd and 6th grades, corroborate the possibility that these diphthongs emerge in the mental representation from the contact of the subjects with the writing. They also point out to an interference of the spoken language in the written one and an influence of writing on oral language. / O presente trabalho investiga o processo de aquisição da escrita dos ditongos orais decrescentes [aj], [ej] e [ow] na cidade de São José do Norte/RS, assim como a relação que se estabelece entre língua falada e língua escrita nesse processo.Os sujeitos pertencem às turmas da 1ª, 2ª, 3ª e 6ª série de duas escolas públicas, uma da zona urbana e outra da zona rural. Foram elaborados três instrumentos de coleta de dados, sendo um para a coleta oral e dois para a coleta escrita. O instrumento da coleta oral contém 62 figuras que foram apresentadas a cada sujeito por meio de um computador. Quanto à coleta escrita, um instrumento foi elaborado para os alunos da 1ª, 2ª e 3a séries e o outro para os alunos da 6ª série. Aos alunos da 1ª, 2ª e 3a séries, o instrumento continha as imagens das figuras mostradas a eles no computador anteriormente, para que escrevessem palavras sobre essas figuras.Para os alunos da 6ª série, o instrumento apresentava frases com espaços em branco, para que fosse completado o sentido de cada uma.As palavras da coleta escrita foram, portanto, as mesmas trabalhadas na oralidade. Foram investigadas variáveis linguísticas, como contexto fonológico seguinte, categoria morfológica e tonicidade, assim como variáveis extralinguísticas, como série, sexo e zona da escola a fim de investigar a influência destas no processo de aquisição gráfica dos respectivos ditongos. A descrição dos dados foi realizada por meio de percentuais referentes à produção e à supressão das semivogais desses ditongos. Acrescentamos, na análise dos dados, resultados estatísticos, por meio da aplicação do programa SPSS v.17.0, a fim de estender os resultados da pesquisa a uma amostra mais ampla.Os resultados confirmam a proposta de Bisol (1989) acerca da existência de apenas um elemento vocálico na representação mental dos aprendizes, tendo em vista o expressivo número de reduções na escrita realizadas nas séries iniciais. A gradual apropriação dos ditongos na escrita, bem como a emergência, na oralidade, de sequências [aj], [ej] e [ow] em sujeitos das turmas de 3ª e 6ª séries, corroboram a possibilidade de esses ditongos emergirem na representação mental a partir do contato dos sujeitos com a escrita. Apontam, ainda, para uma interferência da língua falada na escrita, assim como, uma influência da escrita na oralidade.

Children with dysarthria due to cerebral palsy (CP) often face barriers to accessing speech research participation and clinical speech services. Utilizing at-home online videoconferencing may be a practical solution to these accessibility barriers if the speech signal yielded from online recordings is valid. This study aimed to determine the validity of acoustic and perceptual measures obtained from speech data collected (remotely) online from children with dysarthria due to CP. The speech of 17 children with dysarthria was recorded by means of two data collection methods performed simultaneously: 1) via Zoom video communications and 2) via a professional audio recording device sent to the children's parents. A calibration procedure permitted the children’s original vocal sound pressure level (SPL) to be represented in the speech signal. Acoustic and perceptual measures extracted from the two recordings were compared in order to determine the validity of speech data collected online from the children. The acoustic measures, obtained from 1,690 tokens of words and 605 tokens of sentences, were the second formant (F2) range of diphthongs, F2 slope of diphthongs, fricative-affricate duration difference, word duration/articulation rate, mean fundamental frequency (F0), F0 variation, SPL, shimmer, signal-to-noise ratio (SNR), and cepstral peak prominence (CPP). Perceptual measures were 187 adult listeners’ orthographic transcription accuracy and visual analog scale (VAS) ratings of the children’s speech, collected via an online crowdsourced platform. Acoustic measures of F2 range of diphthongs, fricative-affricate duration difference, word duration, and mean F0 reached the validity criterion of rrm-value .75 and demonstrated good agreement within the predetermined clinical criterion at both word and sentence levels. Moreover, SPL met the validity criterion and exhibited good agreement at the word level; however, it failed to meet the validity criterion and demonstrated agreement outside the clinical criterion at the sentence level. The F2 slope of diphthongs showed a strong correlation between online and audio-device recordings and reached the validity criterion; however, it did not show agreement within the clinical criterion at either word or sentence level. Perturbation-based, noise-based, and cepstral measures (i.e., F0 variation, shimmer, SNR, CPP) showed a wide range of correlation and agreement outside of clinical criteria between online and audio-device recordings. Both perceptual measures showed strong correlations between the two recording methods, reaching the validity criterion. Findings suggest that measures that reflect physiological aspects of speech production may be valid and appropriate to extract from online recordings. However, measures capturing noise and variability within the signal may not be valid when obtained from online recordings. Additionally, the results suggest that perceptual measures of listeners’ transcription and ratings from online recordings may be valid to use for research and clinical purposes. Therefore, careful consideration of the appropriate measures and their limitations is essential to obtaining accurate results when extracting measures from online recordings. These findings provide a valuable foundation of evidence supporting the use of online videoconferencing platforms for several acoustic and perceptual measures commonly implemented in speech research, clinical assessment, and treatment.

Made available in DSpace on 2016-03-22T17:27:01Z (GMT). No. of bitstreams: 1 GABRIELA dissertacao REVISADA FINAL.pdf: 962796 bytes, checksum: e0190a983df66b5ff21e810b793fabc2 (MD5) Previous issue date: 2013-03-27 / This study aims at investigating the behavior of diphthongs in Brazilian Portuguese (BP) and in Spanish from the Prata River region, under the synchronic and diachronic approaches. To develop the diachronic research, it was used bibliographic material, in which was taken the corpus consisted of data related to the historical path of diphthongs from Latin to BP and Spanish from the Prata River region. To discuss the functioning of diphthongs in the current dimension of the two languages, it was constituted two corpora taken from television programs (two from Brazil and two from Uruguay, being one from newscast and the other from an interview program for each country). The data relating to synchronous functioning have been heard, phonetically transcribed, and eventually analyzed. The results indicate the specificity of each language systems related to the behavior of vowel sequences, with prevalence of decreasing diphthongs in BP and rising diphthongs in Spanish from the Prata River region, which can be explained by the diachrony. It was also identified, as a characteristic of the BP system, the variation between the vowel sequence [ej] and the vowel [e] before rhotic consonant. The research was supported by the Stochastic Optimality Theory (Boersma & Hayes, 2001) / O presente estudo visa à investigação do comportamento dos ditongos no Português Brasileiro (PB) e no Espanhol do Prata (EP), sob os enfoques sincrônico e diacrônico. Para o desenvolvimento da pesquisa de base diacrônica, utilizou-se material bibliográfico, do qual se retirou o corpus constituído pelos dados relativos ao percurso histórico dos ditongos desde o Latim até o EP e o PB. Para a discussão do funcionamento dos ditongos na dimensão atual das duas línguas, foram constituídos dois corpora retirados de programas televisivos (dois do Brasil e dois do Uruguai, sendo um telejornal e um programa de entrevistas de cada país). Os dados referentes ao funcionamento sincrônico foram ouvidos e transcritos foneticamente e, por fim, analisados. Os resultados apontaram a especificidade de cada um dos sistemas linguísticos relativamente ao comportamento de sequências vocálicas, com a prevalência de ditongos decrescentes no PB e de ditongos crescentes no EP, o que pode ser explicado pela diacronia; também foi identificada, como particularidade do sistema do PB, a variação entre a sequência vocálica [ej] e a vogal [e] diante de consoante rótica. A pesquisa teve como suporte a Teoria da Otimidade Estocástica (Boersma & Hayes, 2001)