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Real-Time Nonlinear Filtered-X LMS Algorithm for Active Noise Control

Real-Time Nonlinear Filtered-X LMS Algorithm for Active Noise Control

Sahib Mouayad

102,20 €
IVA incluido
Disponible
Editorial:
KS OmniScriptum Publishing
Año de edición:
2015
Materia
Tecnología: cuestiones generales
ISBN:
9783659493164
102,20 €
IVA incluido
Disponible

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Sobre IBD

In practical active noise control (ANC) applications, nonlinearity effects degrade the performance of conventional linear control algorithm. The nonlinearity sources could originate from the noise process, primary and secondary acoustical propagation paths, or from the transducers consisting of loudspeaker, microphone or amplifier. In this book, a new method of modelling the saturation effect of the amplifier based on tangential hyperbolic function (THF) of the nonlinear part of a Hammerstein model structure is proposed. The THF modelling scheme can be incorporated into an established real time nonlinear FXLMS termed THF-NLFXLMS algorithm. The developed THF-NLFXLMS algorithm is tested by means of simulation and implemented experimentally using FPGA-based real time controller for a nonlinear ANC application. The application involves the reduction of a traffic noise that affects the pressure field in a bedroom. The ANC architecture implemented is a single channel internal model control (IMC) based feedback ANC system.

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