2D Sound-Source Localization on the Binaural Manifold

Antoine Deleforge 1 Radu Horaud 1, *
* Corresponding author
1 PERCEPTION - Interpretation and Modelling of Images and Videos
Inria Grenoble - Rhône-Alpes, LJK - Laboratoire Jean Kuntzmann, INPG - Institut National Polytechnique de Grenoble
Abstract : The problem of 2D sound-source localization based on a robotic binaural setup and audio-motor learning is addressed. We first introduce a methodology to experimentally verify the existence of a locally-linear bijective mapping between sound-source positions and high-dimensional interaural data, using manifold learning. Based on this local linearity assumption, we propose an novel method, namely probabilistic piecewise affine regression, that learns the localization-to-interaural mapping and its inverse. We show that our method outperforms two state-of-the art mapping methods, and allows to achieve accurate 2D localization of natural sounds from real world binaural recordings.
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Conference papers
MLSP 2012 - IEEE Workshop on Machine Learning for Signal Processing, Sep 2012, Santander, Spain. IEEE, pp.1-6, 2012, 〈10.1109/MLSP.2012.6349784〉
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Antoine Deleforge, Radu Horaud. 2D Sound-Source Localization on the Binaural Manifold. MLSP 2012 - IEEE Workshop on Machine Learning for Signal Processing, Sep 2012, Santander, Spain. IEEE, pp.1-6, 2012, 〈10.1109/MLSP.2012.6349784〉. 〈hal-00768657〉

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