Dónal Fitzpatrick's main research interest is the novel application of speech-technology. His research examines the use of devices as a mode of interaction between the user and the computer. He is presently looking into the feasibility of using haptic (force-feedback) game-controllers as a means to augment highly graphical output, such as graphs or electronic circuit diagrams. This work is a follow-on from some continuing collaborative work which is investigating the means of using haptic mice to increase access for visually impaired people to electronic maps.

Dr. Fitzpatrick is also investigating the accurate verbal rendering of mathematical material. He is attempting to determine whether the use of Digital Signal Processing (DSP) techniques can add the third dimension to the spoken utterance. This includes a mechanism for depicting the horizontal and vertical alignment of printed mathematical symbols using a purely verbal rendering. Dr. Fitzpatrick's aim is to use DSP and psycho-acoustic techniques to give the listener the impression that the speech signal is "moving", thereby demonstrating aurally what is so readily apparent in the visual presentation of mathematics.

Dr. Fitzpatrick is also exploring the incorporation of speech synthesis and speech recognition into portable devices. At present, devices such as mobile telephones, MP3 and DVD players, and other Personal Digital Assistants are totally designed with a traditional interface. His aim is to improve their usability by providing a more naturally intuitive form of interaction.