The main goal of this thesis is to investigate the nature of an optional consonant deletion process, through an articulatory and acoustic study of word-final consonant clusters in Persian. Persian word-final coronal stops are optionally deleted when they are preceded by obstruents or the homorganic nasal /n/. For example, the final clusters in the words /næft/ “oil”, /suχt/ “burnt” and /qæsd/ “intention” are optionally simplified in fast/casual speech, resulting in: [næf], [suχ], and [qæs]. What is not clear from this traditional description is whether the coronal stop is truly deleted, or if a coronal gesture is produced, but not heard, because it is obscured by the adjacent consonants. According to Articulatory Phonology (Browman & Goldstein 1986, 1988, 1989, 1990a, 1990b, 1992, 2001), the articulatory gestures of the deleted segments can still exist even if the segments are not heard. In this dissertation, ultrasound imaging was used to determine whether coronal consonant deletion in Persian is categorical or gradient, and the acoustic consequences of cluster simplification were investigated through duration and spectral measures. This phonetic study enables an account for the optional nature of the cluster simplification process. A general phonological account is provided for the simplification of coda clusters with rising sonority, and the acoustic and articulatory investigation focuses on the simplification of clusters with coronal stops. Ten Persian-speaking graduate students from the University of Ottawa and Carleton University, five male and five female, aged 25-38 participated in the articulatory and acoustic study. Audio and real time ultrasound video recordings were made while subjects had a guided conversation with a native speaker of Persian. 662 tokens of word-final coronal clusters were auditorily classified into unsimplified and simplified according to whether they contained an audible [t]. Singleton coda consonants and singleton /t/s were also captured as controls. The end of the constriction plateau of C1 and beginning of constriction plateau of C3 were used to define a time interval in which to measure the coronal gesture as the vertical distance between the tongue blade and the palate. Smoothing Splines ANOVA was used in a novel way to compare tongue blade height over time across the three conditions. The articulatory results of this study showed that the gestures of the deleted segments are often still present. More specifically, the findings showed that of the clusters that sounded simplified, some truly had no [t] gesture, some had gestural overlap, and some had reduced gestures. In order to explain the optional nature of the simplification process, it is argued that the simplified tokens are the result of two independent mechanisms. Inevitable mechanical and physiological effects generate gesturally reduced and overlapped tokens whereas planned language-specific behaviors driven by phonological rules or abstract cognitive representations result in no [t]-gesture output. The findings of this study support the main arguments presented in Articulatory Phonology regarding the underlying reasons for sound patterns and sound change. The results of this study are further used to examine different sound change models. It is argued that the simplified tokens with totally deleted [t] gesture could be the result of speakers changing their representations based on other people’s gestural overlap. This would be instances of the Choice and Chance categories in Blevins’ (2004) CCC sound change model. The acoustic results did not find any major cues which could distinguish simplified tokens from controls. It is argued that articulatory data should form an integral part of phonetic studies.

The main goal of this thesis is to investigate the nature of an optional consonant deletion process, through an articulatory and acoustic study of word-final consonant clusters in Persian. Persian word-final coronal stops are optionally deleted when they are preceded by obstruents or the homorganic nasal /n/. For example, the final clusters in the words /næft/ “oil”, /suχt/ “burnt” and /qæsd/ “intention” are optionally simplified in fast/casual speech, resulting in: [næf], [suχ], and [qæs]. What is not clear from this traditional description is whether the coronal stop is truly deleted, or if a coronal gesture is produced, but not heard, because it is obscured by the adjacent consonants. According to Articulatory Phonology (Browman & Goldstein 1986, 1988, 1989, 1990a, 1990b, 1992, 2001), the articulatory gestures of the deleted segments can still exist even if the segments are not heard. In this dissertation, ultrasound imaging was used to determine whether coronal consonant deletion in Persian is categorical or gradient, and the acoustic consequences of cluster simplification were investigated through duration and spectral measures. This phonetic study enables an account for the optional nature of the cluster simplification process. A general phonological account is provided for the simplification of coda clusters with rising sonority, and the acoustic and articulatory investigation focuses on the simplification of clusters with coronal stops. Ten Persian-speaking graduate students from the University of Ottawa and Carleton University, five male and five female, aged 25-38 participated in the articulatory and acoustic study. Audio and real time ultrasound video recordings were made while subjects had a guided conversation with a native speaker of Persian. 662 tokens of word-final coronal clusters were auditorily classified into unsimplified and simplified according to whether they contained an audible [t]. Singleton coda consonants and singleton /t/s were also captured as controls. The end of the constriction plateau of C1 and beginning of constriction plateau of C3 were used to define a time interval in which to measure the coronal gesture as the vertical distance between the tongue blade and the palate. Smoothing Splines ANOVA was used in a novel way to compare tongue blade height over time across the three conditions. The articulatory results of this study showed that the gestures of the deleted segments are often still present. More specifically, the findings showed that of the clusters that sounded simplified, some truly had no [t] gesture, some had gestural overlap, and some had reduced gestures. In order to explain the optional nature of the simplification process, it is argued that the simplified tokens are the result of two independent mechanisms. Inevitable mechanical and physiological effects generate gesturally reduced and overlapped tokens whereas planned language-specific behaviors driven by phonological rules or abstract cognitive representations result in no [t]-gesture output. The findings of this study support the main arguments presented in Articulatory Phonology regarding the underlying reasons for sound patterns and sound change. The results of this study are further used to examine different sound change models. It is argued that the simplified tokens with totally deleted [t] gesture could be the result of speakers changing their representations based on other people’s gestural overlap. This would be instances of the Choice and Chance categories in Blevins’ (2004) CCC sound change model. The acoustic results did not find any major cues which could distinguish simplified tokens from controls. It is argued that articulatory data should form an integral part of phonetic studies.

This research examines how competing factors determine the articulation of English stop-stop sequences across word boundaries in both native (L1) and nonnative (L2) speech. The two general questions that drive this research are 1) how is consonantal coordination implemented across English words? And 2) is this implementation different in L1 versus L2 speech? A group of 15 native English (NE) speakers and a group of 25 native Mandarin speakers (NM) who use English as a foreign language (ESL) participated in this study. The stimuli employed in this research were designed along four major parameters: 1) place of articulation, 2) lexical frequency, 3) stress, and 4) speech rate. The release percentages and closure duration ratios produced by English and Mandarin speakers were measured. The results showed that place of articulation had different effects on English and Mandarin speakers in their English stop-stop coarticulation, especially in heterorganic clusters. Specifically, a place order effect (i.e., more releases and more overlap in front-back clusters than in back-front clusters; POE) was only partially supported in native speech but not shown at all in nonnative speech in the current research. The results also confirmed a gradient lexical frequency effect, finding a significant correlation between self-rated frequency and overlap. A group difference was observed in the interaction between the effects of place of articulation and categorical frequency (real words vs. nonwords). In addition, the results showed, unexpectedly, a stronger stress effect for the NM group rather than for the NE group. Further analyses showed that increased speech rate did not systematically induce increased temporal overlap, because speakers from both groups varied in their behavior, having either more or less overlap at the fast speech rate than at the slow rate. Lastly, the analyses found no correlation between closure duration ratio and perceived accent in L2 speech. This finding was not predicted, given that timing features had always been considered critical to foreign accent perception. / Graduate

<p>Abstract</p><p>This study investigates variable past tense marking patterns in an emerging variety of N.C. Hispanic English (n=44) spoken by language learners at three Length of Residency (LOR) groups in three schools in Durham, NC in terms of 1. lexical semantics (Andersen & Shirai 1996, Bayley 1999), 2. frequency (Guy & Erker 2012) 3. discourse structure (Bardovi-Harlig 1998) and 4. verb class and phonological environment (Wolfram 1985, Bayley 1994). Statistical results show significant effects of verb class, lexical aspect, and frequency and interacting effects of verb class and frequency (specifically, suppletives like copula are simultaneously highly frequent and highly phonetically salient). A subsample coded for the discourse factor shows some evidence for the correlation of copula and backgrounding function. A separate analysis of consonant cluster reduction patterns (CCR) demonstrates dialect acquisition of variable constraints (e.g. in terms of N.C. AAVE), namely phonological environment (_C > _V) and morphemic status (monomorpheme > bimorpheme). Pedagogical applications are discussed, including accurately identifying English Language Learners (ELLs) in the context of local/regional accommodation.</p> / Dissertation

The topic of this thesis belongs to the area of L2 acquisition. It focuses on the Czech as a second/foreign language for native Spanish speakers, specifically on their pronunciation of selected consonantal clusters in comparison with the Czech orthoepic norm. The theoretical part summarizes the problems learning the pronunciation of second/foreign language and describes phonetic systems, syllable structure and specific combinatorial properties of sounds in Czech and Spanish. The practical part describes the research for which thirteen Spanish speakers from different countries and with different length of stay in the Czech Republic were recorded. For the purpose of the research a special text containing the selected consonantal clusters in initial, medial and final position of the word was compiled. Words were examined with a perceptive analysis and the results were processed according to established criteria.

本論文從發音語音學與聲學語音學之觀點研究英語字彙之語音表義現象，其中包括英語中主要五個元音與央元音，二十個輔音，二十九個字首二輔音群，以及六個字首三輔音群。此外也提出語音表義在英語教學上之啟示。首先，語音表義字彙教學配合見字識音法，可以成為形音義三者結合之教學。再者，由於語音表義字彙教學必須透過聯想力建立聲音與意義之間的關聯，因此可以轉被動沈悶之字彙學習為主動活潑之認知歷程，符合認知學習之原則。同時語音表義字彙教學可以訓練學習者之音韻覺識能力，以求在發音、拼字與閱讀方面收長期之效。此外，語音表義字彙教學法可以與其他字彙教學法如「字首字根字尾解字教學法」，或是「上下文語境字彙教學」相輔相成，也同時彌補此兩種教學法不足之處。最後，英語語音學教師若選擇符合語音表義現象之例字，言傳語音特色將會更容易。 本論文完整探討英語中語音表義現象，具有以下幾點貢獻。首先，本文從發音語音學並配合聲學語音學上之佐證完整探討英語語音表義現象，是前所未見的。此外，將語音之歷史發展納入研究考慮因素，認為二輔音群如sc-、sch-、sk-與sh-以及三輔音群scr-與shr-分別具有相同之語音表義現象。而在含有輔音s之輔音群部分，根據Kaye（1992）以及優選理論，本論文將s與後繼語音視為異音節來討論其語音表義現象，亦為本文另一獨特之分析。另外，本論文證明英語中除了擬聲字以外，在聲音與意義之間仍有許多自然之關聯。 / This thesis aims to explore the phenomena of sound symbolism (SS hereafter) in English in terms of articulatory phonetics and acoustic phonetics. The scope of the research covers 5 cardinal vowels, the schwa sounds, 20 single consonants, 29 word-initial two-letter consonant clusters, and 6 word-initial three-letter consonant clusters. Meanwhile, there are some implications on English pedagogy found in the research. First, by providing the association between sound and meaning, SS enriches phonics, which deals with the relationship between spelling and sound, so that spelling, sound and meaning are combined in English vocabulary teaching. Besides, SS turns passive, teacher-centered vocabulary instruction into an active, student-centered one, and this corresponds with the principles of cognitive learning theory. Moreover, the application of SS in teaching English language will help develop learners’ phonological awareness, which improves their pronunciation, spelling and reading abilities. SS at the same time completes other vocabulary teaching methods. Lastly, SS strengthens the instruction of English phonetics in that, if provided with some example words subject to SS phenomena, the features of a sound will be observed and conveyed more easily. Complete in the analysis of SS in English, this thesis pioneers in the following aspects. First of all, this topic is treated in the viewpoint of both articulatory phonetics and acoustic phonetics. Secondly, the historical development of a sound is taken into consideration, and consonant clusters such as sch-、sk- and sh-, therefore, are deemed to have the same sound-meaning relationship with sc- and shr- with scr-. Besides, such s-initial consonant clusters as sl-, sm-, and st- are analyzed in an unprecedented way, some phonological evidences considered. Finally, this thesis proves that there are other non-arbitrary associations between sound and meaning besides onomatopoeic words.