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Particle Methods for Active Hearing

Investigator: Yan-Chen Lu Supervisor: Martin Cooke

Human listeners appear to have little difficulty in following one voice among a mixture of voices. This has been referred to as the cocktail party phenomenon. Various factors have been shown to contribute to this ability, and one particularly important factor is the free movement when human perceiving voices. This free movement factor has been extensively investigated in human sound source localization in multi-source, reverberated environment in the form of dynamic head movement cue and considered as the mechanism to deliver active strategies to improve hearing.

The purpose of this research is to introduce the active aspects of the capturing of dynamic binaural stimuli into the localization and recognition tasks in a probabilistic Bayesian filtering for discrete time dynamic model. Significant benefits from head rotation and translation movement have been identified in terms of best ear listening, binaural unmasking and better signal-to-noise ratio.