Márcio N. de Souza

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For a real-time application of an automatic speech recognition system, hardware acceleration can be the key to reduce the execution time. Vector quantization is an important task that a recognizer based on discrete hidden Markov models must perform. Due to the amount of floating point operations executed, the vector quantizer is an excellent candidate to be(More)
The authors collected and compared mechanomyo-graphic (MMG) signal behavior from the biceps brachii of left and right arms of right-handed men (n = 19) and women (n = 20) who performed isometric contractions at 5 contraction levels. Mean frequency (MF) and RMS values were calculated from the MMG signals that arose from lateral oscillations of muscle fibers.(More)
This systematic literature review evaluated the methodological quality of studies measuring noise in neonatal intensive care units. A manual and also electronic search in the Medline, Scielo, Lilacs, BDENF, WHOLIS, BDTD, Science Direct, NCBI and Scirus databases resulted in 40 studies that met the criterion "measuring noise in neonatal units and/or(More)
The two versions of the Portuguese language, the one spoken in Portugal and the one spoken in Brazil differ both phonetically and lexically. The paper reports on a menu driven voiced information retrieval system, BomdePapo, which can handle both versions of the language. The system was developed in Delphi during a research project joining teams from the(More)
— Otoacoustic emissions (OAE) are very low-level acoustic responses generated by a healthy cochlea during the normal hearing process. This paper focuses on the detection of click-evoked OAE (CEOAE), using wavelet decomposition, to assist on the diagnosis of possible peripheral hearing disfunctions. A complete wavelet-based modeling procedure for the CEOAE(More)
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