Details of Grant 

EPSRC Reference:	GR/S01481/01
Title:	Acoustic Boundary Modelling in Digital Waveguide Mesh Structures
Principal Investigator:	Murphy, Professor D
Other Investigators:
Researcher Co-Investigators:
Project Partners:
Department:	Electronics
Organisation:	University of York
Scheme:	First Grant Scheme Pre-FEC
Starts:	01 October 2002	Ends:	30 November 2005	Value (£):	121,946
EPSRC Research Topic Classifications:	Digital Signal Processing
EPSRC Industrial Sector Classifications:	Creative Industries
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Panel History:
Summary on Grant Application Form
The proposed research will investigate further the use of digital waveguide mesh structures in the acoustic modelling of enclosed spaces. This technique is currently well understood in terms of its characteristics and limitations, and has been demonstrated as being applicable for this type of application, but is little used outside of those groups working in this relatively small field. The first aspect of this work is to develop a system allowing high-level design and control of 3-D mesh structures, facilitating experimentation with their properties (eg. geometry, topology, signal scattering characteristics, input, output and boundary defintions) in an intuitive manner through the construction of physical objects (eg. rooms and 3-D spaces). The second aspect of this work will examine the properties of the acoustic boundary conditions as currently implemented, investigating their properties across a wider and more comprehensive range of mesh topologies. This will encompass research into filter based boundaries, diffusion methods, scattering junction design and impedance matching, together with an examination of related transmission line, finite difference, and perfectly matched layer techniques. This will lead to the formulation of a boundary more closely aligned to real-world acoustic boundary conditions for implementation within the waveguide mesh design system. A comparative study will examine this improved mesh implementation against other established techniques and real world examples and demonstrate its use in the field of audio processing and sound spatialisation through the use of musical examples.
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Organisation Website:	http://www.york.ac.uk