Vocalisations Evidence from Germanic

A vocalisation may be described as a historical linguistic change where a sound which is formerly consonantal within a language becomes pronounced as a vowel. Although vocalisations have occurred sporadically in many languages they are particularly prevalent in the history of Germanic languages and have affected sounds from all places of articulation. This study will address two main questions. The first is why vocalisations happen so regularly in Germanic languages in comparison with other language families. The second is what exactly happens in the vocalisation process. For the first question there will be a discussion of the concept of ‘drift’ where related languages undergo similar changes independently and this will therefore describe the features of the earliest Germanic languages which have been the basis for later changes. The second question will include a comprehensive presentation of vocalisations which have occurred in Germanic languages with a description of underlying features in each of the sounds which have vocalised. When considering phonological changes a degree of phonetic information must necessarily be included which may be irrelevant synchronically, but forms the basis of the change diachronically. A phonological representation of vocalisations must therefore address how best to display the phonological information whilst allowing for the inclusion of relevant diachronic phonetic information. Vocalisations involve a small articulatory change, but using a model which describes vowels and consonants with separate terminology would conceal the subtleness of change in a vocalisation. The model presented here has therefore been designed to unite the descriptions of consonants and vowels to better demonstrate this change whilst allowing for relevant phonetic information to be included

An empirical investigation of pronunciation problems of young learners of English as a foreign language - identification and remedial strategies

This thesis describes a novel pronunciation training programme devised for young learners of English as a foreign language in schools in Germany. The intervention is grounded in current theories of second language, employs valid and established pronunciation task formats, and targets a core set of significant pronunciation problem areas typical of young learners. This core set was identified from research literature, curricular requirements as well as data from questionnaires completed by 245 English language teachers in the German state of Hesse. The English pronunciation intervention was implemented over five months within the language education setting of English L2 learners (ages 10 to 12) in two schools in Frankfurt/Main. Quasi-experimental classroom research was conducted using a control group design to examine the effects of the pronunciation intervention. To obtain within-subject measurements, the data were collected at three points: prior to the intervention (pre-test), immediately after the intervention (post-test) and six months later (follow-up). There were two types of analyses of the pronunciation data. First there was auditory evaluation: all test utterances by the students were assessed auditorily using a three-point scale to rate their performance. Secondly, acoustic analysis of the same data was conducted using the computer software programme Praat. The acoustic parameters of interest included fundamental and formant frequencies, vowel and fricative durations, spectral peaks and spectral rate of change, to assess changes in pronunciation. The main aim of the analyses was to measure the impacts, if any, of the pronunciation intervention. The results revealed that maturation processes took place for both the intervention and control groups, as predicted. Overall, the auditory analysis presented mixed results but showed some training effects for the fricatives /ð/ and /θ/ and the affricate /dʒ/. Most salient of all, there were clear frequency effects. The acoustic data analysis indicated more systematic effects of the intervention on acoustic parameters associated with precision and stability. The scatter plots and Euclidean distances computed from the acoustic data revealed more precision and stability in the production of the vowels /ɑː, ɔː, ə, æ/, the diphthongs /ɪə; eɪ/ and the approximant /w/ in the intervention group. In addition, the centre of gravity values indicated that the training led to a more native-like production of /θ/ and /ð/

Elements, Government, and Licensing: Developments in phonology

Elements, Government, and Licensing brings together new theoretical and empirical developments in phonology. It covers three principal domains of phonological representation: melody and segmental structure; tone, prosody and prosodic structure; and phonological relations, empty categories, and vowel-zero alternations. Theoretical topics covered include the formalisation of Element Theory, the hotly debated topic of structural recursion in phonology, and the empirical status of government. In addition, a wealth of new analyses and empirical evidence sheds new light on empty categories in phonology, the analysis of certain consonantal sequences, phonological and non-phonological alternation, the elemental composition of segments, and many more. Taking up long-standing empirical and theoretical issues informed by the Government Phonology and Element Theory, this book provides theoretical advances while also bringing to light new empirical evidence and analysis challenging previous generalisations. The insights offered here will be equally exciting for phonologists working on related issues inside and outside the Principles & Parameters programme, such as researchers working in Optimality Theory or classical rule-based phonology

Analyzing speech in both time and space : generalized additive mixed models can uncover systematic patterns of variation in vocal tract shape in real-time MRI

We present a method of using generalized additive mixed models (GAMMs) to analyze midsagittal vocal tract data obtained from real-time magnetic resonance imaging (rt-MRI) video of speech production. Applied to rt-MRI data, GAMMs allow for observation of factor effects on vocal tract shape throughout two key dimensions: time (vocal tract change over the temporal course of a speech segment) and space (location of change within the vocal tract). Examples of this method are provided for rt-MRI data collected at a temporal resolution of 20 ms and a spatial resolution of 1.41 mm, for 36 native speakers of German. The rt-MRI data were quantified as 28-point semi-polar-grid aperture functions. Three test cases are provided as a way of observing vocal tract differences between: (1) /aː/ and /iː/, (2) /aː/ and /aɪ/, and (3) accentuated and unstressed /aː/. The results for each GAMM are independently validated using functional linear mixed models (FLMMs) constructed from data obtained at 20% and 80% of the vowel interval. In each case, the two methods yield similar results. In light of the method similarities, we propose that GAMMs are a robust, powerful, and interpretable method of simultaneously analyzing both temporal and spatial effects in rt-MRI video of speech

Cross-language perception and production of English vowels by Portuguese learners: the effects of perceptual training

Doctoral Dissertation in Language Sciences Specialization in English LinguisticsSeveral studies have demonstrated that second/foreign language (L2/FL) speech learning is a challenge to late learners (i.e., adolescents or adults) in terms of perception and production of certain non-native phonemic and phonetic contrasts (Moyer, 2013). The interaction of different factors might explain learners’ difficulties, namely age of onset of learning (AOL), amount of native (L1) and non-native language (NNL) use over time, quantity and quality of NNL input, and the interference from the L1 phonological system (Piske, 2007). The Speech Learning Model (SLM), proposed by Flege (1995), hypothesizes that difficulties in perceiving and, consequently, in producing non-native contrasts are due to the (dis)similarities between the L1 and the NNL phonological systems. The L1 sound system is likely to hinder the formation of new non-native (L2/FL) phonological categories. However, a considerable number of cross-language studies has revealed that phonological learning is attainable for late learners, and their abilities in perceiving and producing segmental and suprasegmental non-native contrasts can improve, since the mechanisms used in the acquisition of the L1 sound system remain intact over the lifespan and can be applied to L2/FL learning (Flege, 1995). Experimental studies that investigated the effects of perceptual training on non-native speech sound perception and production reported its success not only in the modification of adult learners’ perceptual patterns, but also in the improvement of their pronunciation accuracy, confirming, thereby, the plasticity of L2/FL learners’ mature perceptual system (e.g., Aliaga-Garcia, 2013; Pereira & Hazan, 2013; Wang, 2008; Wang et al., 2003). Difficulties in the perception of non-native vowel contrasts have been widely described as a significant part of the problems learners have in L2/FL phonological acquisition/learning (Strange, 2007). Therefore, the present study investigated the effects of perceptual training on the learning of three English contrasts (/i/-/ɪ/; /ɛ/-/æ/; /u/-/ʊ/) by a group of EFL (English as a Foreign Language) learners. This set of vowel contrasts was selected due to reported difficulties European Portuguese native speakers have in perceiving and producing them (Flege, 1994, as cited in Flege, 1995; Rato et al., 2013). The English phonological categories /ɪ/, /æ/ and /ʊ/ tend to be assimilated to the Portuguese vowel sounds /i/, /ɛ/ and /u/, respectively, and no distinction between the two vowels of each pair is made, due to their acoustic and articulatory proximity. Specifically, this study investigated (i) whether a high variability perceptual training, which included stimuli with different phonemic contexts produced by multiple native talkers, had a positive effect on the perception of the English target segments; (ii) if transfer of improvement to oral production was observed; (iii) whether perceptual learning generalized to identification of new words produced by novel talkers; and (iv) if long-term training effects remained. The participants’ perception was assessed three times with an identification test designed with natural stimuli: (1) before the auditory training – pretest; (2) immediately after the training was over – posttest; and (3) two months later – delayed posttest. The perceptual training program consisted of five sessions divided into two blocks, which included discrimination tasks and identification sequences followed by immediate feedback. Production was tested simultaneously in the three phases by means of a sentence-reading task with the target vowel segments. The results show that the Portuguese learners’ performance in the identification of the English vowels improved significantly, and perceptual gains were retained two months after completion of the training sessions. Moreover, the results of the generalization test indicate that there was robust learning of the two front vowel pairs. Acoustic analyses of spoken data revealed that phonological learning transferred to production. In sum, these results support the claim that perceptual learning can occur in a formal non-naturalistic environment within a short period of time and corroborate previous findings on the malleability of L2/FL adult learners’ perceptual systems.Vários estudos têm demonstrado que, na aprendizagem de uma língua não materna (LNM), a perceção e a produção de determinados contrastes fonológicos e fonéticos não nativos são um desafio para aprendentes tardios (adolescentes ou adultos) (Moyer, 2013). Diversos fatores podem explicar essas dificuldades, tais como a idade do início da aprendizagem, a frequência de uso, a quantidade e a qualidade de exposição à LNM e a influência do sistema fonológico da língua materna (L1) (Piske, 2007). O Speech Learning Model (SLM), desenvolvido por Flege (1995), explica que as dificuldades percetivas e, consequentemente, produtivas se devem ao facto de o sistema de sons linguísticos da L1 impedir a formação de novas categorias fonológicas para a segunda língua ou língua estrangeira (L2/LE). No entanto, um número considerável de estudos tem revelado que aprendentes tardios podem aprender a perceber e a produzir contrastes segmentais e suprassegmentais não nativos, uma vez que os mecanismos usados para aprender o sistema de sons da L1 são ativados na aprendizagem de uma LNM e permanecem intactos durante toda a vida (Flege, 1995). Estes estudos empíricos, que investigaram os efeitos do treino percetivo na perceção e produção de sons não nativos, reportaram a sua eficácia não somente na modificação de padrões percetivos, mas também na melhoria da capacidade produtiva dos mesmos, confirmando assim a plasticidade do sistema percetivo dos aprendentes de LNMs (por exemplo, Aliaga- Garcia, 2013; Pereira & Hazan, 2013; Wang, 2008; Wang et al., 2003). Os resultados de extensa investigação indicam que as dificuldades na perceção de contrastes vocálicos não nativos são uma parte significativa dos problemas que os aprendentes revelam na aquisição/aprendizagem fonológica de uma L2/LE (Strange, 2007). Portanto, no presente estudo, investigaram-se os efeitos do treino percetivo na aprendizagem de três contrastes vocálicos da língua inglesa (/i/-/ɪ/; /ɛ/-/æ/; /u/-/ʊ/) por um grupo de aprendentes de inglês como LE. Estes três contrastes foram escolhidos devido às dificuldades percetivas e produtivas que falantes nativos de português europeu revelam na sua aprendizagem (Flege, 1994, citado em Flege, 1995; Rato et al., 2013). As categorias fonológicas /ɪ/, /æ/ e /ʊ/ da L2/LE tendem a ser assimiladas como sons da L1, /i/, /ɛ/ e /u/, respetivamente, não se verificando qualquer distinção entre as vogais dos três contrastes, devido à sua proximidade acústica e articulatória. Especificamente, pretendeu-se (i) observar o efeito de um treino percetivo de alta variabilidade, que incluiu estímulos produzidos por vários locutores nativos em diferentes contextos fonológicos, na melhoria da capacidade percetiva dos segmentos-alvo; (ii) averiguar a transferência da melhoria para a produção oral; (iii) verificar a generalização para novos contextos e novos falantes; e (iv) analisar os efeitos do treino a longo prazo. A perceção dos participantes foi testada três vezes com uma tarefa auditiva de identificação com estímulos naturais: (1) antes do treino – pré-teste; (2) imediatamente depois do treino – pós-teste; e (3) dois meses mais tarde – teste de retenção. O programa de treino consistiu em cinco sessões, divididas em dois blocos, que incluíram tarefas de identificação e de discriminação auditivas seguidas de correção imediata. A produção foi testada, igualmente, em três fases, através da leitura de frases veículo, contendo palavras com os segmentos vocálicos. Os resultados demonstram que os aprendentes portugueses melhoraram significativamente na identificação das vogais-alvo e essa melhoria da sua competência percetiva manteve-se dois meses após o término do treino. Para além disso, os resultados do teste de generalização indicam que houve uma aprendizagem robusta dos dois contrastes vocálicos anteriores. As análises acústicas das produções dos informantes revelaram também uma transferência da aprendizagem para a produção oral. Estes resultados suportam a afirmação de que a aprendizagem ao nível da perceção de fala pode ocorrer em contextos formais, num curto período de tempo, e corroboram resultados anteriores sobre a maleabilidade dos sistemas percetuais fonológicos de aprendentes adultos de uma LNM

In search of speech intelligibility: the case of english high front vowels

Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Comunicação e Expressão, Programa de Pós-Graduação em Inglês: Estudos Linguísticos e Literários, 2014.A pesquisa que envolve a fala tem abordado a questão da inteligibilidade para entender como determinados aspectos fonológicos afetam a comunicação entre indivíduos que têm línguas-maternas diferentes, e que também usam inglês como uma segunda língua (L2). Assim, pesquisas empíricas são necessárias para informar o ensino, especialmente, no que tange aspectos da pronúncia da L2 que devem constituir o foco de instrução na sala de aula. Portanto, o presente estudo investigou a inteligibilidade das vogais altas anteriores do inglês focando (1) nas características acústicas das vogais altas anteriores do inglês produzidas por aprendizes brasileiros, (2) nos perfis dos ouvintes (proficiência da L2 e tempo de residência no Brasil), e (3) na familiaridade e frequência do léxico. Os falantes foram 20 estudantes brasileiros que gravaram sentenças contendo palavras com as vogais altas anteriores do inglês, /?/ e /?/. Para observar como essas categorias vocálicas organizavam-se na interlíngua dos falantes e, assim, selecionar os dados para o teste de inteligibilidade, plotagens dos dados em versão normalizada e não-normalizada foram obtidas. Para testar os efeitos de proximidade espectral na inteligibilidade dessas vogais, um critério baseado na proximidade espectral do primeiro formante (F1) foi estabelecido. Inteligibilidade foi avaliada com o uso de transcrição ortográfica (Derwing & Munro, 2005), e os ouvintes foram 32 usuários de inglês de 11 línguas-maternas diferentes. A análise acústica demonstrou que as vogais altas anteriores do inglês foram produzidas como vogais equivalentes (Flege, 1995), e tendiam a sobrepor-se. Resultados concernentes à inteligibilidade indicaram que a vogal tensa foi mais ininteligível, pois era inadequadamente transcrita como a vogal frouxa. Em uma análise qualitativa, considerando o item lexical que continha cada vogal, observou-se que processos fonológicos presentes nessas palavras, tais como desvozeamento de consoantes e palatalização, afetaram consideravelmente a inteligibilidade da fala. Além do mais, efeitos da proficiência do ouvinte na L2 foram testados e proficiência demonstrou-se ser uma importante característica individual para aferição da inteligibilidade da fala, pois observou-se que o nível de inteligibilidade aumentava juntamente com o nível de proficiência do ouvinte. O tempo de residência dos ouvintes no Brasil foi investigado como um indicador indireto de familiaridade com sotaque, mas as correlações não indicaram resultados significativos. Para analisar frequência lexical, o Corpus of Contemporary American English (COCA) foi utilizado. A familiaridade dos ouvintes com o léxico utilizado no teste de inteligibilidade foi também observada. As correlações revelaram que a relação entre frequência lexical, familiaridade com o léxico, e respostas corretas no teste de inteligibilidade eram significativas, demonstrando que quanto mais frequente o item lexical, mais familiar e mais inteligível era esse item também. Em suma, resultados demonstram que as vogais altas anteriores, quando não distinguidas, podem influenciar negativamente a inteligibilidade. Não obstante, existem outras variáveis linguísticas e variáveis relacionadas ao ouvinte que estão propensas a influenciar na decodificação da fala que, em investigações referentes à inteligibilidade, podem ser observadas em diferentes níveis (vogal, consoante, e nível da palavra).2014-08-06T18:10:52

Perception and production of english vowels by brazilian efl speakers

Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Comunicação e Expressão. Programa de Pós-Graduação em Letras/Inglês e Literatura Correspondente.This study investigated the relationship between the perception and production of English vowels by 18 highly proficient Brazilian EFL speakers, most of them M.A. and doctoral students of the Graduate Program in English of the Universidade Federal de Santa Catarina. Two experiments were carried out: A production test to measure the first two formants of the learners' English and Brazilian Portuguese (BP) vowels, and an identification test with synthetic stimuli to investigate the L2 (second language) perception of English vowels. The production and perception results reveal that the Euclidean distance between the three English target pairs (/i/-/I/, /E/-/ae/, /U/-/u/) was significantly larger for the American English monolinguals than for the L2 learners, thus indicating that the Brazilians have difficulty in both producing and perceiving these vowels in a native-like fashion. Importantly, some relationship between vowel perception and production was found because the target pairs which were better perceived were also the ones produced more accurately by the L2 learners. These results provide further evidence for the fact that L2 perception outperforms L2 production