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Palestra pelo Prof. Walter Kellermann

21 Setembro 2007, 17:00 - Pedro Flores Correia

Informa-se que se irá realizar no dia 1 de Outubro, às 14h00, no Anfiteatro do Complexo Interdisciplinar, uma palestra pelo Prof. Walter Kellermann, Universidade de Erlangen-Nuremberg, Distinguished Lecturer da Signal Processing Society do IEEE.

O título da palestra, para a qual está convidado, é :

"Acoustic Signal Processing for Next-Generation Multichannel Human/Machine Interfaces"

Abstract: The acoustic interface for future multimedia and communication terminals should be hands-free and as natural as possible, which implies that the user should be free to move and and should not need to wear any devices. For digital signal processing this poses major challenges both for signal acquisition and reproduction, which reach far beyond the current state of the technology. For ideal acquisition of an acoustic source signal in noisy and reverberant environments, we need to compensate acoustic echoes, suppress noise and interferences and we would like to dereverberate the desired source signal. On the other hand, for a perfect reproduction of real or virtual acoustic scenes we need to create desired sound signals at the listeners ears, while at the same time we have to remove undesired reverberance and to suppress local noise. In this talk we will briefly analyze the fundamental problems for signal processing in the framework of MIMO (multiple input - multiple output) systems and discuss current solutions. In accordance with ongoing research we emphasize nonlinear and multichannel acoustic echo cancellation, as well as microphone array signal processing for beamforming, interference suppression, blind source separation, and source localization.

A visita do Prof. Walter Kellermann é apoiada pelo IEEE Portugal.