A5072302946- Speech and Audio Processing
- Advanced Adaptive Filtering Techniques
- Direction-of-Arrival Estimation Techniques
- Blind Source Separation Techniques
- Flow Measurement and Analysis
- Environmental and biological studies
Federal Center for Technological Education Celso Suckow da Fonseca
2020-2021
Universidade do Estado do Rio de Janeiro
2019
It is known that adaptive filtering algorithms may tackle relevant communication tasks. In order to reduce the adaptation rate, least mean squares algorithm and its normalized version be implemented in a block manner, so filter coefficients are adjusted once per each output block. This letter advances stochastic model able predict learning capabilities of time-domain extensions these algorithms, demonstrates their behaviour not governed by trivial generalizations rules presented standard...
In general, algorithms for adaptive arrays intend to emphasize desired signals while discriminating against interference signals. this paper, a novel constrained normalized least mean-squares algorithm with improved robustness noise is proposed. The devised requires low computational burden and takes advantage of variable reusing coefficient technique, in order enhance asymptotic performance maintaining good convergence behaviour. Simulations reveal that the estimated weights proposed lead...
<p class="Standard">The atomic decomposition of signals by algorithm the class “Matching Pursuit” (MP) has been applied in audio compression. Literature review suggests that, use psychoacoustic criteria allows a more compact representation signal, without loss perceived quality. This work presents implementation an analysis system synthesis using MP associated with global masking threshold, inspired MPEG layer I, as well Complex Exponential Dictionaries (DEC). For compression we used...
Com base no conceito de controle ativo ruído, qual utiliza-se a superposição destrutiva sinais para cancelamento ruídos indesejados, este trabalho apresenta simulação computacional um sistema supressão em ambiente industrial, tendo como ponto partida medições realizadas uma Estação Compressão Gás. O algoritmo implementado redução ruído é fundamentado na teoria filtros adaptativos, aplicando-se com coeficientes variáveis adaptados por específico, modo obter resposta adequada ao objetivo do...