Computational Acoustics Autumn Webinars: Dynamic Vocal Tract Modelling with the Digital Waveguide Mesh

Posted in Computational Acoustics, Events

  • Nov 11, 2020
  • 13:00 — 14:30
  • Zoom
  • Website

The UKAN Computational Acoustics Special Interest Group are pleased to welcome Damian Murphy (University of York) who will present a talk on Dynamic Vocal Tract Modelling with the Digital Waveguide Mesh (details below). This talk will take place on Zoom. Please sign up via Eventbrite here.

Abstract

The digital waveguide mesh is a simulation method that emerged in music acoustics as a multi-dimensional equivalent to discrete time implementations of the travelling wave solution to the 1D linear wave equation. It is conceptually equivalent to the transmission-line matrix methods used in electromagnetic field problems, and under certain conditions, the finite difference time domain method. Whereas the latter has become favoured in more recent years in music acoustics, supported by parallel computing implementations on commonly available general purpose graphical processing units, the digital waveguide mesh has still found areas of application, one of which being vocal tract modelling and articulatory speech synthesis. This seminar will chart the evolution of such vocal tract models from the traditional 1D Kelly-Lochbaum approach through to 3D dynamic modelling using the digital waveguide mesh based on high resolution physiological data obtained from MRI scans.

Bio

Damian Murphy is Professor in Sound and Music Computing at AudioLab in the Department of Electronic Engineering, University of York, and the University Research Theme Champion for Creativity. His research focuses on immersive audio and acoustic modelling, he is an active sound artist, and the Director of the £15m XR Stories Creative Industries R&D Partnership exploring interactive and immersive storytelling for the UK’s creative screen industries.

Related Papers

Gully A. J., Daffern, H., and Murphy, D. T., “Diphthong Synthesis Using the Dynamic 3D Digital Waveguide Mesh”, IEEE/ACM Trans. Audio, Speech, and Language Processing, vol. 26, no. 2, pp. 243-255, Feb. 2018.

Murphy, D. T., Mátyás, J., and Ternström, S., ‘Articulatory vocal tract synthesis in Supercollider’, Proc. of the 18th Int. Conference on Digital Audio Effects (DAFx-15), pp. 307-313, Trondheim, Norway, Nov. 30-Dec. 3, 2015.

Speed, M., Murphy, D.T., Howard, D.M., ‘Modeling the Vocal Tract Transfer Function using a 3D Digital Waveguide Mesh’, IEEE Trans. Audio, Speech, and Language Processing, vol. 22, no. 2, pp. 453 – 464, Feb. 2014.

Speed, M., Murphy, D.T., Howard, D.M., ‘Three-Dimensional Digital Waveguide Mesh Simulation of Cylindrical Vocal Tract Analogs’, IEEE Trans. Audio, Speech and Language Processing, vol. 21, no. 2, pp. 449-455, Feb. 2013

Mullen, J., Howard, D.M., and Murphy, D.T., ‘Real-Time Dynamic Articulations in the 2D Waveguide Mesh Vocal Tract Model’, IEEE Trans. Audio, Speech and Language Processing, vol. 15, no. 2, pp. 577-585, 2007.

Mullen, J., Howard, D.M., and Murphy, D.T., ‘Waveguide Physical Modeling of Vocal Tract Acoustics: Flexible Formant Bandwidth Control From Increased Model Dimensionality’, IEEE Trans. Audio, Speech and Language Processing, vol. 14. no. 3, pp. 964-971, 2006.

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