Categoriality and continuity in prosodic prominence

Prosody has been characterised as a "half-tamed savage" being shaped by both discrete, categorical aspects as well as gradient, continuous phenomena. This book is concerned with the relation of the "wild" and the "tamed" sides of prosodic prominence. It reviews problems that arise from a strict separation of categorical and continuous representations in models of phonetics and phonology, and it explores the potential role of descriptions aimed at reconciling the two domains. In doing so, the book offers an introduction to dynamical systems, a framework that has been studied extensively in the last decades to model speech production and perception. The reported acoustic and articulatory data presented in this book show that categorical and continuous modulations used to enhance prosodic prominence are deeply intertwined and even exhibit a kind of symbiosis. A multi-dimensional dynamical model of prosodic prominence is sketched, based on the empirical data, combining tonal and articulatory aspects of prosodic focus marking. The model demonstrates how categorical and continuous aspects can be inte- grated in a joint theoretical treatment that overcomes a strict separation of phonetics and phonology

The inverse relation of pre-nuclear and nuclear prominences in German

The importance of pre-nuclear prominences for focus marking has been largely neglected. Recent studies, however, present first evidence that the prosody of the pre-nuclear region indicates its status as part of a broad focus or as pre-focal. This study presents a systematic investigation of the pre-nuclear domain and its relation to the nuclear accent in German. The results show that the realization of the pre-nuclear domain indeed depends on whether it is focal or pre-focal: The pre-nuclear noun is characterized by larger F0 excursions, higher F0 maxima and larger durations when it is in broad focus than when it precedes a narrow focus. Furthermore, the realization of a pre-focal, pre-nuclear domain depends on the following focus: The pre-nuclear noun is produced with smaller F0 excursions, lower F0 maxima and shorter durations before a corrective focus than before a non-corrective narrow focus. The comparison to the nuclear accent suggests an inverse relationship, i.e., the pre-nuclear domain becomes less prominent when the nuclear domain becomes more prominent. The findings suggest that the phonetic manifestation of information structure is distributed over larger prosodic domains and entails the modulation of phrasal prominence profiles rather than just local adjustments of the nucleus

Generation of mechanical oscillation applicable to vibratory rate gyroscopes

To achieve a drive-axis oscillation with improved frequency and amplitude stability, additional feedback loops are used to adjust force-feedback loop parameters. An amplitude-control loop measures oscillation amplitude, compares this value to the desired level, and adjusts damping of the mechanical sense-element to grow or shrink oscillation amplitude as appropriate. A frequency-tuning loop measures the oscillation frequency, compares this value with a highly stable reference, and adjusts the gain in the force-feedback loop to keep the drive-axis oscillation frequency at the reference value. The combined topology simultaneously controls both amplitude and frequency. Advantages of the combined topology include improved stability, fast oscillation start-up, low power consumption, and excellent shock rejection

Microfabricated structures with electrical isolation and interconnections

The invention is directed to a microfabricated device. The device includes a substrate that is etched to define mechanical structures at least some of which are anchored laterally to the remainder of the substrate. Electrical isolation at points where mechanical structures are attached to the substrate is provided by filled isolation trenches. Filled trenches may also be used to electrically isolate structure elements from each other at points where mechanical attachment of structure elements is desired. The performance of microelectromechanical devices is improved by 1) having a high-aspect-ratio between vertical and lateral dimensions of the mechanical elements, 2) integrating electronics on the same substrate as the mechanical elements, 3) good electrical isolation among mechanical elements and circuits except where electrical interconnection is desired

Paradigmatic and syntagmatic effects of information status on prosodic prominence – evidence from an interactive web-based production experiment in German

In this paper, we investigate how information status is encoded paradigmatically and syntagmatically via prosodic prominence in German. In addition, we consider individual variability in the production of prominence. To answer our research questions, we collected controlled yet ecologically valid speech by applying an innovative recording paradigm. Participants were asked to perform an interactive reading task in collaboration with an interlocutor remotely via video calls. Results indicate that information status is encoded paradigmatically via the F0 contour, while syntagmatic effects are subtle and depend on the acoustic parameter used. Individual speakers differ primarily in their strength of encoding and secondarily in the type of parameters employed. While the paradigmatic effects we observe are in line with previous findings, our syntagmatic findings support two contradictory ideas, a balancing effect and a radiating effect. Along with the findings at the individual level, this study thus allows for new insights regarding the redundant and relational nature of prosodic prominence

Challenges with the kinematic analysis of neurotypical and impaired speech : measures and models

A common goal of kinematic studies on disordered speech is the identification of speech motor impairments that negatively impact speech function. Although it is well-known that the kinematic contours of speakers with speech disorders often deviate considerably from those of neurotypical speakers, systematic quantitative assessments of these impairment-related movement disturbances remain challenging. Kinematic measurement approaches are commonly grounded in models and theories that have emerged exclusively from observations of healthy speakers. However, often these models cannot accommodate the deviant articulatory behaviors of speakers with speech motor impairment. In the present paper, we address this problem. By considering noise as a factor in Articulatory Phonology/Task Dynamics (AP/TD), we can account for articulatory behaviors that are known to occur in healthy speakers (e.g., during slow speech) as well as in speakers with motor speech impairments. In a proof of concept, we descriptively compare modeled articulatory behaviors that include noise at various levels with empirical data. We view such an extension of the AP/TD as a first step towards a more comprehensive speech production model that can serve as a theoretical framework to study the speech production mechanism in healthy speakers and speakers with motor speech impairments