This thesis describes the numerical modelling of bioacoustic structures, the focus
being the outer ear or pinnae of the Rufous Horseshoe bat (Rhinolophus rouxii).
There have been several novel developments derived from this work including:
• A method of calculating directionality based on the sphere with a distribution of
measuring points such that each lies in an equal area segment.
• Performance estimation of the pinna by considering the directionality of an equivalent
• A simple synthetic geometry that appears to give similar performance to a bat
The outcome of applying the methods have yielded results that agree with measurements,
indeed, this work is the first time TLM has been applied to a structure of this
kind. It paves the way towards a greater understanding of bioacoustics and ultimately
towards generating synthetic structures that can perform as well as those found in the
A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy of Loughborough University.