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
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.