Research

Acoustic Source Tracking:

The focus of my PhD thus far as be focused on Acoustic Source Tracking - that is tracking a speech source (a person) as the source moves around a room based on the recordings of what the person is saying.

The approach taken here uses Particle Filters to overcome the noisy measurements.

Demo Videos:

The following are some videos of real AST in an office room. The algorithm can run in real time and it estimates both source position and orientation simultaneously. The source is a computer speaker driven by a male speech sample:

• rec01

• rec02

• rec04

The samples correspond to the examples reported in my DAFX06 paper below. All the videos are compressed using DivX, a free player can be found here.

Publications:

• M. Fallon, S. Godsill and A. Blake, "Joint Acoustic Source Location and Orientation Estimation using Sequential Monte Carlo", Digital Audio Effects (DAFX), Montreal, ON, Canada, September 2006. [Paper] [Presentation] [Bibtex]

• S. Rickard and M. Fallon, "The Gini Index of Speech", Conference on Information Sciences and Systems, Princeton, NJ, USA, March 2004. [PDF]