Wouter Tirry

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During the transition to wideband speech telephony, artificial band-width extension (ABE) could help to preserve customer satisfaction by enhancing speech quality in case of narrowband (NB) calls. However , the assessment of speech quality for ABE systems is still an open question. In the literature, instrumental measures are often used to judge the quality(More)
After a short review of electron tomography techniques for materials science, this overview will cover some recent results on different shape memory and nanostructured metallic systems obtained by various three-dimensional (3D) electron imaging techniques. In binary Ni-Ti, the 3D morphology and distribution of Ni4Ti3 precipitates are investigated by using(More)
Among different microphone array processing techniques , data-dependent beamforming has been proven to be effective in suppressing ambient noise. When applied for dereverberation, however, the adaptation process results in a biased estimate of the beamformer coefficients leading to strong distortions at the beamformer output. In this paper, we investigate(More)
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