SPE-29 - Voice & Articulation (Advanced assignment)

This two-part assignment introduces students to spectrogram reading by asking them (1) to explore a set of spectrograms representing the days of the week, and then (2) record their own spectrogram and add a picture of it to a common Mystery Spectrograms folder for use in a subsequent assignment (and also in classroom activities). NOTE: by the time this assignment is introduced, the students have already learned how to record themselves and save sound files using the Praat software for acoustic analysis. If they are not familiar with the procedure, this tutorial will help: Making a recording in PRAA

SPE-41 - Language Development (Intro assignment)

This assignment is asking students to collaboratively create a database with videos illustrating differences in the speech production of young children compared to that of adults

SPE-29 - Voice & Articulation (Intro assignment)

This assignment is asking students to collaboratively create a database of good and bad voices for subsequent analysis

Investigating the Status of a Rare Cross-Linguistic Contrast: The Case of Romanian Palatalized Postalveolars

This study examines a rare cross-linguistic contrast, that between plain and secondarily palatalized postalveolar fricatives, through (i) an acoustic analysis of the production of 31 Romanian speakers, and (ii) a perception experiment with a different group of 31 native speakers. Evidence of acoustic separation between plain and palatalized forms was found for 27 of the subjects, suggesting that the contrast is produced by the majority. This is consistent with previous reports of native speakers collected in 1961. These findings were supported by the results of the perceptual experiment, which showed that native speakers exhibit moderate sensitivity to this contrast. An examination of each of the two genders\u27 production separately suggests that a process of neutralization may be in progress, more strongly realized by males compared to females. Aside from documenting this phenomenon in Romanian, an explanation is sought for its longevity, and it is proposed that grammatical restructuring offers the best account for the observed facts

Palatalization in Romanian — Acoustic properties and perception

This paper presents the results of an acoustic study of fricatives from four places of articulation produced by 31 native speakers of Romanian, as well as those of a perceptual study using the stimuli from the acoustic experiment, allowing for a direct comparison between acoustic properties and perception. It was found that there are greater acoustic differences between plain and palatalized labials and dorsals as compared to coronals. The acoustic results were paralleled by the perceptual findings. This pattern departs from cross-linguistic generalizations made with respect to the properties of secondary palatalization. A likely source of the differences is the fact that previous studies of secondary palatalization typically involved stops which tend to exhibit various enhancement phenomena at the coronal place of articulation. Since the enhancement generally involves additional frication, this is not a useful strategy for fricatives at the coronal, or any other place of articulation. These findings form the basis of a discussion highlighting the differences between enhanced and non-enhanced secondary palatalization

Acoustic Classification of Russian Plain and Palatalized Sibilant Fricatives: Spectral vs. Cepstral Measures

This study compares two methods for classifying voiceless sibilant fricatives forming a 4-way phonemic contrast found in Russian, but otherwise cross-linguistically rare. One method uses spectral measures, i.e. vowel formants, COG, duration and intensity of frication. The second method uses cepstral coefficients extracted from different regions inside fricatives and neighboring vowels. The corpus comprises 1,431 plain and palatalized fricatives from two places of articulation, produced by 10 speakers. Logistic regression was used to classify the productions of males and females together and separately. The productions of females yielded higher correct classification rates (highest 91.9%). Cepstral measures outperformed spectral measures across-the-board

Is There a Bilingual Advantage in Phonetic and Phonological Acquisition? The Initial Learning of Word-Final Coronal Stop Realization in a Novel Accent of English

Research question: We address the question of whether the cognitive advantage of the bilingual mind, already demonstrated in the case of auditory processing or novel word acquisition, also applies to other linguistic domains, specifically to phonetic and phonological learning. Design: We compare the performance of 17 monolinguals and 25 bilinguals from Canada in a production experiment with two tasks: imitation and spontaneous reproduction of a novel foreign accent, specifically Sussex English. Data and analysis: To eliminate potential sources of variability, our focus is on a sound already existing in the subjects’ production (the glottal stop), but differently mapped to surface representations in the novel accent to which they were exposed (i.e. as an allophone of coronal stops in word-final position). We measured the glottal stop rates of our subjects in baseline, training, and post-training. Results: The two groups behaved differently, with bilinguals showing a larger increase of their glottal stop rate post-training. Our results are thus consistent with a bilingual advantage in phonetic and phonological learning. Originality: We interpret these findings in light of recent psycholinguistic work and conclude that echoic memory strategies, possibly underlain by stronger subcortical encoding of sound in bilinguals, may account for our results by facilitating the re-mapping between existing mental representations of sounds and existing articulatory command configurations. Significance: Our study adds to the body of work showing that there is an advantage of bilingualism in second dialect learning in adulthood, and provides an explanation in terms of perceptual strategies in which echoic memory is involved. We also contribute to the recent body of research suggesting that imitation of an action can result in improved understanding of that action

Oligohydramnios: A review of etiology and management options

Oligohydramnios is both a consequence of fetal malformations and of uteroplacental insufficiency. Its existence is associated with a high rate of both antepartum and intrapartum complications. It is vital that its occurrence is detected as early as possible so that we can manage it correctly. The main causes of its occurrence are identified and described in this review. The management of oligohydramnios is most often expectant, the timing of delivery also being determined by Doppler examination and changes in parameters measuring fetal growth and development

Barriers and levers of enhancing animal welfare in organic and low-input outdoor production: Insights from a supply chain survey

Animal welfare is an essential part of the sustainability of animal production. While low-input farming, such as organic animal production, is often considered animal-friendly, several ways to enhance animal welfare in low-input animal production exist. However, currently there is little information on how farmers and other supply chain actors view different innovations and tools which may influence animal welfare in low-input outdoor and organic production systems. The aim of this study was to examine farmers’ and experts’ reactions to new approaches to pig and poultry production, with special attention to their animal welfare-related measures. The reactions were tested formally in by using a quantitative survey instrument in nine European countries (Finland, UK, France, Denmark, the Netherlands, Belgium, Germany, Italy, Romania). In the survey, respondents’ views on production practices and novel measures were asked. These included aspects such as applicability and advantages and disadvantages of various measures such as avoiding mutilations, using dual-purpose or local breeds, or in-ovo sexing. The data included altogether 218 responses from nine countries. Differences between countries were tested and groups of respondents were identified. The results suggest that supply side stakeholders foresee the welfare benefits and some disadvantages of welfare improving measures proposed to them. However, they also indicate that several measures were considered inapplicable despite their benefits. Inadequate financial provisions to adopt a measure was considered as one of the most important reasons for inapplicability of a measure. This may imply either high costs of implementing measures of low market incentives or perceived low demand for animal-friendly products. Other barriers for adopting welfare-friendly measures included farm-specific factors such as limitations imposed by housing. The respondents indicated a high relative preference for feeding, breeding, shelter from predators and the use of vaccines and anti-parasitic treatments to the provision of enrichments and nesting material to pigs, and to mutilations. Farmers agreed that environmental enrichments are important welfare-improving levers and preferred their use in low-input pig and poultry production. Animal breeding-related measures in pig production were perceived quite favorably by supply side stakeholders. Despite their welfare benefits, farmers in some countries had quite high preference towards maintaining castration and tail docking in pig and beak trimming in broiler production as part of their production method

Increasing importance of anthelmintic resistance in European livestock: creation and meta-analysis of an open database

peer reviewedHelminth infections are ubiquitous in grazing ruminant production systems, and are responsible for significant costs and production losses. Anthelmintic Resistance (AR) in parasites is now widespread throughout Europe, although there are still gaps in our knowledge in some regions and countries. AR is a major threat to the sustainability of modern ruminant livestock production, resulting in reduced productivity, compromised animal health and welfare, and increased greenhouse gas emissions through increased parasitism and farm inputs. A better understanding of the extent of AR in Europe is needed to develop and advocate more sustainable parasite control approaches. A database of European published and unpublished AR research on gastrointestinal nematodes (GIN) and liver fluke (Fasciola hepatica) was collated by members of the European COST Action “COMBAR” (Combatting Anthelmintic Resistance in Ruminants), and combined with data from a previous systematic review of AR in GIN. A total of 197 publications on AR in GIN were available for analysis, representing 535 studies in 22 countries and spanning the period 1980–2020. Reports of AR were present throughout the European continent and some reports indicated high within-country prevalence. Heuristic sample size-weighted estimates of European AR prevalence over the whole study period, stratified by anthelmintic class, varied between 0 and 48%. Estimated regional (country) prevalence was highly heterogeneous, ranging between 0% and 100% depending on livestock sector and anthelmintic class, and generally increased with increasing research effort in a country. In the few countries with adequate longitudinal data, there was a tendency towards increasing AR over time for all anthelmintic classes in GIN: aggregated results in sheep and goats since 2010 reveal an average prevalence of resistance to benzimidazoles (BZ) of 86%, macrocyclic lactones except moxidectin (ML) 52%, levamisole (LEV) 48%, and moxidectin (MOX) 21%. All major GIN genera survived treatment in various studies. In cattle, prevalence of AR varied between anthelmintic classes from 0–100% (BZ and ML), 0–17% (LEV) and 0–73% (MOX), and both Cooperia and Ostertagia survived treatment. Suspected AR in F. hepatica was reported in 21 studies spanning 6 countries. For GIN and particularly F. hepatica, there was a bias towards preferential sampling of individual farms with suspected AR, and research effort was biased towards Western Europe and particularly the United Kingdom. Ongoing capture of future results in the live database, efforts to avoid bias in farm recruitment, more accurate tests for AR, and stronger appreciation of the importance of AR among the agricultural industry and policy makers, will support more sophisticated analyses of factors contributing to AR and effective strategies to slow its spread