The effects of ultrasound on 2,2'-Azinobis(3-ethylbenzothiazoline-6-sulfonate) enzymatic oxidation by laccase (Trametes villosa) has been studied by means of cyclic voltammetry. The reaction was allowed to proceed in the presence of a piece of wool and the coloration depth of the wool fabric was measured by means of K/S. It was observed that cyclic voltammetry is influenced the dyeing process a...

We present a system for musical genre classification based on audio features extracted from signals which correspond to distinct musical instrument sources. For the separation of the musical sources, we propose an innovative technique in which the convolutive sparse coding algorithm is applied to several portions of the audio signal. The system is evaluated and its performance is assessed.

A promising approach for speech dereverberation is based on supervised learning, where a deep neural network (DNN) trained to predict the direct sound from noisy-reverberant speech. This data-driven leveraging prior knowledge of clean patterns, and seldom explicitly exploits linear-filter structure in reverberation, i.e., that reverberation results linear convolution between room impulse respon...

This paper concerns the underdetermined case of the convolutive source separation problem, i.e. the situation when the number of observed convolutively mixed signals is lower than the number of sources. We propose a criterion and associated algorithm which, unlike classical approaches, make it possible to perform the separation of a subset of these sources by exploiting their assumed non-statio...