Ninth International Conference on Spoken Language Processing

Pittsburgh, PA, USA
September 17-21, 2006

Modeling the Precedence Effect for Binaural Sound Source Localization in Noisy and Echoic Environments

Martin Heckmann, Tobias Rodemann, Bjorn Scholling, Frank Joublin, Christian Goerick

Honda Research Institute Europe GmbH, Germany

We present a new way of modelling the Precedence Effect to enable the robust measurement of localization cues (ITD and IID) in echoic environments. Based on this we developed a localization system which is inspired by the auditory system of mammals. It uses a Gammatone filter bank for preprocessing and extracts the ITD cue via zero crossings (IID calculation is straight forward). The mapping between the cue values and the different angles is learned offline which facilitates the adaptation to different head geometries. The performance of the system is demonstrated by localization results for two simultaneous speakers and the mixture of a speaker, music, and fan noise in a normal meeting room. A real-time demonstrator of the system is presented in [1].

Full Paper

Bibliographic reference.  Heckmann, Martin / Rodemann, Tobias / Scholling, Bjorn / Joublin, Frank / Goerick, Christian (2006): "Modeling the precedence effect for binaural sound source localization in noisy and echoic environments", In INTERSPEECH-2006, paper 1196-Thu2FoP.6.