Acoustic and Kinematic Correlates of Heterosyllabicity in Different Phonological Contexts

We investigate the temporal and kinematic properties of consonant gemination and heterosyllabic clusters as opposed to singletons and tautosyllabic clusters in Italian. The data show that the singleton versus geminate contrast is conveyed by specific kinematic properties in addition to systematic durational differences in both the consonantal and vocalic intervals; by contrast, tautosyllabic and heterosyllabic clusters differ significantly for the duration of the consonantal interval but do not vary systematically with respect to the vocalic interval and cannot be consistently differentiated at the kinematic level. We conclude that systematic variations in acoustic vowel duration and the kinematics of tongue tip gestures represent the phonetic correlates of the segmental phonological contrast between short and long consonants, rather than of syllable structure. Data are only partly consistent with the predictions of both moraic and gesture-based models of the syllable about the effects of syllable structure on speech production dynamics and call for a more gradient view of syllabification.

Shared Vowels in English Loanwords in Arabic: Variation in Similarity-Based Adaptation

This paper investigates vowel adaptation in English-based loanwords by a group of Saudi Arabic speakers, concentrating exclusively on shared vowels between the two languages. It examines 5 long vowels shared by the two vowel systems in terms of vowel quality and vowel duration in loanword productions by 22 participants and checks them against the properties of the same vowels in native words. To this end, the study performs an acoustic analysis of 660 tokens (loan and native vowel sounds) through Praat to measure the first two formants (F1: vowel height and F2: vowel advancement) of each vowel sound at two temporal points of time (T1: the vowel onset and T2: the peak of the vowel) as well as a durational analysis to examine vowel length. It reports that measurements of the first two formants of vowels in native words appear to be stable during the two temporal points while values of the same vowel sounds occurring in loanwords are fluctuating from T1 to T2 and that durational differences exist between loanword vowels in comparison with vowels of native words in such a way that vowels in native words are longer in duration than the same vowels appearing in loanwords.

Parents’ hyper-pitch and vowel category compactness in infant-directed speech are associated with 18-month-old toddlers’ expressive vocabulary

The present study examines the acoustic properties of infant-directed speech (IDS) as compared to adult-directed speech (ADS) in Norwegian parents of 18-month-old toddlers, and whether these properties relate to toddlers’ expressive vocabulary size. Twenty-one parent- toddler dyads from Tromsø, Northern Norway participated in the study. Parents (16 mothers, 5 fathers), speaking a Northern Norwegian dialect, were recorded in the lab reading a storybook to their toddler (IDS register), and to an experimenter (ADS register). The storybook was designed for the purpose of the study, ensuring identical linguistic contexts across speakers and registers, and multiple representations of each of the nine Norwegian long vowels. We examined both traditionally reported measures of IDS: pitch, pitch range, vowel duration and vowel space expansion, but also novel measures: vowel category compactness and vowel category distinctiveness. Our results showed that Norwegian IDS, as compared to ADS, had similar characteristics as in other languages: higher pitch, wider pitch range, longer vowel duration, and expanded vowel space area; in addition, it had less compact vowel categories. Further, parents’ hyper-pitch, that is, the within-parent increase in pitch in IDS as compared to ADS, and vowel category compactness in IDS itself, were positively related to toddlers' vocabulary. Our results point towards potentially facilitating roles of parents’ increase in pitch when talking to their toddler and of consistency in vowel production in early word learning.

The acoustics of word-initial and word-internal voiced stops in Somali

This article seeks to determine the acoustic correlates of gemination in Standard Somali (Afroasiatic, Cushitic), in particular whether closure duration is the primary acoustic correlate distinguishing singleton and geminate stops, with immediate consequences for the analysis of word-initial strengthening. We provide an acoustic analysis of word-initial and word-internal voiced singletons as well as of their geminate counterparts on the basis of a production experiment conducted with four native speakers. Three temporal and four non-temporal acoustic properties of /b d ɡ/ and /bb dd ɡɡ/ are examined and systematically compared (closure duration, release burst duration, vowel duration; and closure amplitude, release amplitude, presence of a release burst, (de)voicing). We argue that the opposition between singleton and geminate voiced stops is primarily realized as the manner contrast approximant [β̞ ð̞ ɣ̞] vs. stop [b d ɡ]. Word-initially, Somali exhibits various peculiarities that are reminiscent of the cross-linguistically attested phenomenon of domain-initial strengthening. This article provides the first study of this phenomenon in Somali. We establish that word-initial /b d ɡ/ and word-medial /bb dd ɡɡ/ share the same closure duration, release burst duration, and vowel duration within the Prosodic Word. They also have a similar closure amplitude, and voicing properties. Moreover, the acoustic properties of word-initial /b d ɡ/ remain constant, and do not depend on their position in the prosodic hierarchy. On the basis of these results, the article also aims at providing new insights in the phonological representation of Somali geminates and word boundaries, and thus contributes to the understanding of word-initial strengthening in Somali.

Broken tone in Leivu CV’V-words

Leivu is one of the South Estonian dialects historically spoken in eastern Latvia and influenced by Latvian. One likely influence is broken tone or stød, which was developing in Leivu mainly as a result of the loss of /h/ in first quantity degree words. The aim of this study is to determine what characterises the pronunciation of CV’V-words (lost intervocalic /h/) and differentiates these from CVV-words. Sound durations, F0 and intensity contours of the syllable rhyme were analysed. Vowel duration in CV’V-words tends to be longer than in CVV-words. In CV’V-words, a short drop in intensity can occur between two identical or two different vowels, with the first vowel often being longer than the second one. In some cases, the second vowel in CV’V words was laryngealised. In CV’V-words, an early F0 turning point where F0 starts to fall occurs more consistently than in CVV-words where F0 can also be rising. Kokkuvõte. Pire Teras: Katketoon leivu CV’V-sõnades. Leivu on üks lõunaeesti murretest, mida räägiti Ida-Lätis ja mida mõjutas läti keel. Üks neist mõjudest on tõenäoliselt katketoon, mis oli tekkimas peamiselt esmavältelistes sõnades /h/ kao tulemusel. Liivi keeleski on katketooni kujunemise üheks põhjuseks peetud just /h/ kadu. Selle töö eesmärk on välja selgitada, mis iseloomustab leivu /h/-kaoliste CV’V-sõnade hääldust ja mis eristab neid kolmandavältelistest CVV-sõnadest. Analüüsiti häälikukestusi, põhitooni- ja intensiivsuskontuure. Vokaalikestus on leivu CV’V-sõnades veidi pikem kui CVV-sõnades. CV’V-sõnades võib toimuda intensiivsuse langus ja tõus või järsk intensiivsuse langus nii kahe ühesuguse kui ka erineva vokaali vahel: esimene vokaal on enamasti kestuselt pikem kui teine. Ka CVV-sõnade hilistekkelistes diftongides on esimene osis sageli pikem kui teine. Mõnel juhul larüngaliseerub CV’V-sõnades silbituuma lõpuosa. Põhitoonikontuuris on CV’V-sõnades palju järjekindlamalt varane pöördepunkt ja langev põhitoon kui CVV-sõnades, kus tuleb ette ka hilise pöördepunktiga tõusvat põhitooni.

An Acoustic Analysis of Cantonese Lexical Tones by Chinese Youths in Seremban, Malaysia

Cantonese is widely spoken among the Malaysian Chinese community. Cantonese speakers are not only native speakers, but also non-native speakers. One of the difficult parts of Cantonese learning is lexical tones. In view of this, this study provides an acoustic analysis of Cantonese lexical tones produced by Chinese youths in Seremban, Negeri Sembilan. This study investigates the acoustic characteristics of Cantonese lexical tones by analysing the length features and pitch features of monosyllabic words. Six female speakers participated in this study. Three of them are native Cantonese speakers, while the other three are non-native Cantonese speakers. Data analysis was conducted by using Praat. In terms of length features, T2 and T6 are the shortest smooth tones, and T7 is the shortest checked tone. In terms of pitch features, T3 and T4 had greater changes compared to the previous study. All lexical tones produced by non-native speakers, with the exception of T2, are level tones. Moreover, in both groups, the vowel duration and pitch value of T2 are relatively the same as T6, and there is a trend of combination.

Syllable weight, vowel length and focus in Lebanese Arabic

Research on a variety of languages has shown that vowel duration is influenced by phonological vowel length as well as syllable structure (e.g., Maddieson, 1997). Further, the phonological concept of a mora has been shown to relate to phonetic measurements of duration (Cohn, 2003; Hubbard, 1993; Port, Dalby, & O'Dell, 1987). In Levantine Arabic, non-final closed syllables that contain a long vowel have been described as partaking in mora-sharing (Broselow, Chen, & Huffman, 1997; Khattab & Al-Tamimi, 2014). The current investigation examines the effect of vowel length and syllable structure on vowel duration, as well as how this interacts with durational effects of prosodic focus. Disyllabic words with initial, stressed syllables that were either open or closed and contained either a long or a short vowel wereexamined when non-focused and in contrastive focus. Contrastive focus was associated with longer words and syllables but not vowels. Short vowels were shorter when in a syllable closed by a singleton but not by a geminate consonant, while long vowels were not shortened before coda singletons. An analysis is proposed whereby long vowels followed by an intervocalic consonant cluster are parsed as open syllables, with the first consonant forming a semisyllable (Kiparsky, 2003), while long vowels followed by geminate consonants partake in mora-sharing (Broselow, Huffman, Chen, & Hsieh, 1995). The results also indicate compensatory shortening for short vowels followed by a singleton coda.

How explicit instruction improves phonological awareness and perception of L2 sound contrasts in younger and older adults

Despite the importance of conscious awareness in second language acquisition theories, little is known about how L2 speech perception can be improved by explicit phonetic instruction. This study examined the relationship between phonological awareness and perception in Dutch younger and older adult L2 listeners, focusing on English contrasts of two types: a familiar contrast in an unfamiliar position (word-final /t/-/d/) and an unfamiliar contrast (/æ/-/ε/). Awareness was assessed with a task in which written minimal pairs and homophone pairs had to be judged as sounding the same or different. Perception was assessed with a two-alternative forced-choice identification task with auditorily presented words from minimal pairs. We investigated whether listeners’ awareness and perception improved after a video-based explicit instruction that oriented their attention to one of these contrasts, and we tested whether including information about the phonetic cue of vowel duration increased learning. Awareness and perception of each contrast were shown to be moderately correlated at the study’s outset. Furthermore, awareness and perception for each contrast generally improved more after the instruction drawing attention to that contrast. However, the effectiveness of explicit phonetic instruction varied depending on the combination of the contrast, cue information, and listener age group.

Word Categorization of Vowel Durational Changes in Speech-Modulated Bone-Conducted Ultrasound

Ultrasound can deliver speech information when it is amplitude-modulated with speech and presented via bone conduction. This speech-modulated bone-conducted ultrasound (SM-BCU) can also transmit prosodic information. However, there is insufficient research on the recognition of vowel duration in SM-BCU. The aim of this study was to investigate the categorization of vowel durational changes in SM-BCU using a behavioral test. Eight Japanese-speaking participants with normal hearing participated in a forced-choice behavioral task to discriminate between “hato” (pigeon) and “haato” (heart). Speech signal stimuli were presented in seven duration grades from 220 ms to 340 ms. The threshold at which 50% of responses were “haato” was calculated and compared for air-conducted audible sound (ACAS) and SM-BCU. The boundary width was also evaluated. Although the SM-BCU threshold (mean: 274.6 ms) was significantly longer than the ACAS threshold (mean: 269.6 ms), there were no differences in boundary width. These results suggest that SM-BCU can deliver prosodic information about vowel duration with a similar difference limen to that of ACAS in normal hearing.