12th Annual Conference of the International Speech Communication Association

Florence, Italy
August 27-31. 2011

Blind Source Separation for Robot Audition Using Fixed Beamforming with HRTFs

Mounira Maazaoui, Yves Grenier, Karim Abed-Meraim

LTCI, France

We present a two stage blind source separation (BSS) algorithm for robot audition. The algorithm is based on a beamforming preprocessing and a BSS algorithm using a sparsity separation criterion. Before the BSS step, we filter the sensors outputs by beamforming filters to reduce the reverberation and the environmental noise. As we are in a robot audition context, the manifold of the sensor array in this case is hard to model, so we use pre-measured Head Related Transfer Functions (HRTFs) to estimate the beamforming filters. In this article, we show the good performance of this method as compared to a single stage BSS only method.

Full Paper

Bibliographic reference.  Maazaoui, Mounira / Grenier, Yves / Abed-Meraim, Karim (2011): "Blind source separation for robot audition using fixed beamforming with HRTFs", In INTERSPEECH-2011, 3117-3120.