Auto-oscillation of human vocal folds: Key experiments using acoustic loads. This project aims to explain the basic physics of the voice using new, non-invasive, acoustic techniques. The physics of the vocal folds’ aeromechanical oscillation are not understood because this precious tissue is unavailable for direct experiments. This project shall determine how the flow and pressure at the larynx behave under acoustical loads and develop a data set that selects which models can explain vocal fold ....Auto-oscillation of human vocal folds: Key experiments using acoustic loads. This project aims to explain the basic physics of the voice using new, non-invasive, acoustic techniques. The physics of the vocal folds’ aeromechanical oscillation are not understood because this precious tissue is unavailable for direct experiments. This project shall determine how the flow and pressure at the larynx behave under acoustical loads and develop a data set that selects which models can explain vocal fold motion under different conditions and determine the parameters in those models. This project could benefit the huge industries that treat, record, compress, transmit, analyse and synthesise the voice.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE160100194
Funder
Australian Research Council
Funding Amount
$250,000.00
Summary
Optical diagnostics for the investigation of high-speed energetic processes. Optical diagnostics for the investigation of high-speed energetic processes:
The project seeks to establish equipment to enable the investigation of high-speed energetic processes. Such processes, where large amounts of energy are released over a short time frame, occur in nature and almost every field of science and engineering, and their investigation is a formidable challenge. This challenge is designed to be met th ....Optical diagnostics for the investigation of high-speed energetic processes. Optical diagnostics for the investigation of high-speed energetic processes:
The project seeks to establish equipment to enable the investigation of high-speed energetic processes. Such processes, where large amounts of energy are released over a short time frame, occur in nature and almost every field of science and engineering, and their investigation is a formidable challenge. This challenge is designed to be met through the combined use of state-of-the-art flow visualisation, thermography and spectrometry equipment. These diagnostics would open avenues into so far impossible or difficult to conduct research on highly transient phenomena in various research fields, which include various aspects of fluid mechanics, combustion, and fracture mechanics. The equipment would be instrumental in the design of better and innovative machines, materials, instruments and processes.Read moreRead less
The acoustics of a wide-range autonomous oscillator: how do brass players do it? While brass instruments are well understood, the complexities of the interaction with the player are not. This study will analyse how the player's lips and vocal tract interact with the instrument, leading to an understanding not only of the interesting physics involved, but to insight that will benefit players, teachers and students.
Discovery Early Career Researcher Award - Grant ID: DE200100168
Funder
Australian Research Council
Funding Amount
$312,566.00
Summary
Fast predictive tools for suspensions of slender fibres in viscous fluids. This project aims to develop an effective toolbox for modelling suspensions of slender fibres in viscous fluids. Though little is understood about the interactions of fibres in viscous fluids, such configurations occur frequently in nature and industry: e.g. sperm gather together and swim by waving slender filaments, and collections of carbon fibres are injection molded to manufacture machine parts. Current models are qua ....Fast predictive tools for suspensions of slender fibres in viscous fluids. This project aims to develop an effective toolbox for modelling suspensions of slender fibres in viscous fluids. Though little is understood about the interactions of fibres in viscous fluids, such configurations occur frequently in nature and industry: e.g. sperm gather together and swim by waving slender filaments, and collections of carbon fibres are injection molded to manufacture machine parts. Current models are qualitative or require large computations. This project will use ideas from colloidal suspensions and state-of-the-art asymptotic techniques to develop a refined toolbox for collections of slender fibres in viscous flow. These methods could help understand infertility, develop new technologies and optimise manufacturing.Read moreRead less
Metamaterials for control of acoustic radiation forces. This project aims to investigate how sound waves exert forces on objects, and how these forces can be controlled by artificially engineered structures known as acoustic metamaterials. The project is expected to lead to a new understanding of acoustic radiation forces, and how they can be efficiently manipulated with high resolution. The expected outcome is a new capability for the measurement of delicate mechanical structures, which avoids ....Metamaterials for control of acoustic radiation forces. This project aims to investigate how sound waves exert forces on objects, and how these forces can be controlled by artificially engineered structures known as acoustic metamaterials. The project is expected to lead to a new understanding of acoustic radiation forces, and how they can be efficiently manipulated with high resolution. The expected outcome is a new capability for the measurement of delicate mechanical structures, which avoids the cost, complexity and side-effects of existing systems. This should benefit many high-tech areas, including inflatable space structures, micro-mechanical sensors and actuators and precise optical components, as well as biological areas such as the study of insect flight and communication.Read moreRead less
The voice: glottal flows, vocal tract resonances and their interaction. Speech is fundamental to human culture and huge industries exist that analyse, compress, synthesise, transmit and distribute it. Nevertheless, several practical difficulties mean that some key variables and how they interact are only imprecisely known. This project uses an innovative approach for deriving the glottal flow and a new technique for generating precise acoustical flows in model systems to refine the algorithms cu ....The voice: glottal flows, vocal tract resonances and their interaction. Speech is fundamental to human culture and huge industries exist that analyse, compress, synthesise, transmit and distribute it. Nevertheless, several practical difficulties mean that some key variables and how they interact are only imprecisely known. This project uses an innovative approach for deriving the glottal flow and a new technique for generating precise acoustical flows in model systems to refine the algorithms currently used to relate speech sound to the acoustic flow in the larynx. The project aims to provide the first reliable measurements of the bandwidths of resonances and the acoustical losses in vocal tracts. The results will have practical industrial and, perhaps, clinical applications.Read moreRead less
Vocal resonances in speech: rapid, precise measurements of how tract resonances vary with time, with applications to speech and language training. This project will track dynamically with significant precision the resonances of the vocal tract which produce much of the phonetic information in speech and important features of accent. The information and technology developed will be useful for speech science, benefiting speech synthesis, speech training and language acquisition.
Enhanced interaction of electromagnetics and mechanics in structured media. This project will investigate the interaction between electromagnetic waves and mechanical motion in structured media. Enhancing this interaction will improve a number of modern technologies, such as nano-scaled motors, traps for biological samples and optical wrenches. Modern fabrication techniques will link the electromagnetic and mechanical properties of media, so that the electromagnetic forces will greatly increase, ....Enhanced interaction of electromagnetics and mechanics in structured media. This project will investigate the interaction between electromagnetic waves and mechanical motion in structured media. Enhancing this interaction will improve a number of modern technologies, such as nano-scaled motors, traps for biological samples and optical wrenches. Modern fabrication techniques will link the electromagnetic and mechanical properties of media, so that the electromagnetic forces will greatly increase, making such devices able to manipulate larger objects. Structured materials can also change their properties dynamically, enabling material properties to be altered in real time. This mechanism will form the basis of advanced tunable components to control waves at visible, infrared, terahertz and microwave wavelengths.Read moreRead less
The physics and art of expressive performance on wind instruments. This project aims to understand the non-linear physics underlying how musicians produce beautiful, expressive phrases. Elegant, expressive playing is much more than just the right notes. Using techniques unique to this team, we will give a deeper understanding of how breath pressure, mouth geometry and forces, tongue action and finger motions interact to communicate expression in musical phrases on a wind instrument. The outcome ....The physics and art of expressive performance on wind instruments. This project aims to understand the non-linear physics underlying how musicians produce beautiful, expressive phrases. Elegant, expressive playing is much more than just the right notes. Using techniques unique to this team, we will give a deeper understanding of how breath pressure, mouth geometry and forces, tongue action and finger motions interact to communicate expression in musical phrases on a wind instrument. The outcome will be the understanding of how varying control parameters interact at the physical level and how this communicates expression to listeners. Understanding interactions that expert players perform unconsciously will have significant benefits to music learning and teaching.Read moreRead less
Fracture-Resistant Highly Insulating Vacuum Glazing. Vacuum glazing can provide thermal and sound insulation for windows that achieve the benefits of double glazing without the increased thickness by incorporating a vacuum space between two sheets of glass. The gap is maintained by pillars under high compressive stress due to atmospheric pressure. In this project, we will study the effect of pillar designs and materials on the U-value and the mechanical performance of these complex structures. D ....Fracture-Resistant Highly Insulating Vacuum Glazing. Vacuum glazing can provide thermal and sound insulation for windows that achieve the benefits of double glazing without the increased thickness by incorporating a vacuum space between two sheets of glass. The gap is maintained by pillars under high compressive stress due to atmospheric pressure. In this project, we will study the effect of pillar designs and materials on the U-value and the mechanical performance of these complex structures. Detailed simulations and measurements of stress distributions in the pillars, edge seals and glass sheets, under static and dynamic loading conditions, will allow us to develop glazing structures with greatly increased mechanical strength.Read moreRead less