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
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
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE100100108
Funder
Australian Research Council
Funding Amount
$175,000.00
Summary
Ultra-high frequency non-contact vibrometry equipment for biomicrofluidics metrology. This equipment will enable experimental vibration measurement up to an unprecedented one billion cycles per second of motion smaller than the width of a helium atom (20 femtometres). Understanding and harnessing the phenomena unique to this regime, especially very large accelerations surpassing one billion times the acceleration of gravity, will enable the development of rapid protein crystallisation techniques ....Ultra-high frequency non-contact vibrometry equipment for biomicrofluidics metrology. This equipment will enable experimental vibration measurement up to an unprecedented one billion cycles per second of motion smaller than the width of a helium atom (20 femtometres). Understanding and harnessing the phenomena unique to this regime, especially very large accelerations surpassing one billion times the acceleration of gravity, will enable the development of rapid protein crystallisation techniques and constant-temperature organic chemical reaction enhancement for rapid development of new drugs, new devices for measuring the profile of surfaces at video speeds (videoAFM), new micro- and nano-devices for fluid pumping, mixing, colloidal separation and concentration, and new autonomous nanorobots for non-invasive microsurgery.Read moreRead less
Nonlinear and tunable topological states of light and sound. This project aims to provide deep theoretical insights into the physics of electromagnetic and mechanical topological states by bridging fundamental concepts of optics, optomechanics and nonlinear physics. The rapidly expanding digital world calls for a new generation of photonic devices to transmit and process information without losses. Recently discovered topological phases open unique opportunities to realise topological states of ....Nonlinear and tunable topological states of light and sound. This project aims to provide deep theoretical insights into the physics of electromagnetic and mechanical topological states by bridging fundamental concepts of optics, optomechanics and nonlinear physics. The rapidly expanding digital world calls for a new generation of photonic devices to transmit and process information without losses. Recently discovered topological phases open unique opportunities to realise topological states of light that are inherently immune to scattering losses. This multidisciplinary project aims to bridge fundamental topological physics with nonlinear nanophotonics and optomechanics by developing novel concepts of topological systems, dynamically tunable by nonlinearity. An expected outcome of this project is new approaches to control both light and sound dynamically in complex nanoscale structures, and uncover disorder-immune technologies for applications in on-chip communications and information processing.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
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 acoustics of reed instruments during transients and vibrato: elements of excellence. In the hands and mouth of an expert player, a woodwind reed instrument (for example, clarinet and oboe) can produce a subtle and beautiful sound. Using techniques only available in this lab, this project will determine the physics of the interactions between a player's vocal tract, the vibrating reed and the instrument bore. The project will determine how an expert player can control the initial, final and s ....The acoustics of reed instruments during transients and vibrato: elements of excellence. In the hands and mouth of an expert player, a woodwind reed instrument (for example, clarinet and oboe) can produce a subtle and beautiful sound. Using techniques only available in this lab, this project will determine the physics of the interactions between a player's vocal tract, the vibrating reed and the instrument bore. The project will determine how an expert player can control the initial, final and slurred transients that give grace, elegance and other desired qualities. The project will also study how sustained notes vary with time, with special attention to timbre vibrato, which gives 'warmth' and a lively, 'glowing' quality to their sound. This study will yield important practical results, which can be converted into advances in music teaching.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.
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.