Yannick Mahieux

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Both visual and acoustical informations provide effec– tive means of telecommunication between persons. In this context, the face is the most important part of the person both visually and acoustically. We describe how the co– operation of image and audio processing allows to track a person’s face and to collect the audio information it pro– duces. We(More)
The use of optimal postfiltering has been previously proposed to increase the performance of microphone arrays. In this paper, an analysis of the postfilter shows that its behaviour is closely related to the one of the array. This is illustrated by considering a typical videoconferencing context. The results we provide demonstrate that the use of a(More)
A 0.5 &#x003BC;m 3V CMOS mixed-mode audio processor is presented. It is mainly composed of eleven low noise input channels and a dedicated digital audio processor. Analog input signals are provided through an eleven microphone array. The chip size is about 50 mm<sup>2</sup> and the power dissipation is less than 100 mW. This circuit is dedicated to(More)
A 0.5 μm 3V CMOS mixed-mode audio processor is presented. It is mainly composed of eleven low noise input channels and a dedicated digital audio processor. Analog input signals are provided through an eleven microphone array. The chip size is about 50 mm2 and the power dissipation is less than 100 mW. This circuit is dedicated to multimedia applications.
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