Implementación de un Control Activo de Ruido en Configuración Feedback basado en un Microcontrolador

Pablo Tomás Bernadí, Pablo Gomez

Resumen


Este trabajo describe la implementación de un sistema de control activo de ruido sobre la plataforma EDU-CIAA-NXP con hardware reducido y de bajo costo. Se hace una revisión del algoritmo filtered-X LMS en configuraciones feedforward y feedback, y se detalla el diseño de filtros anti-alias y de reconstrucción. Se describe el software que corre sobre la plataforma, y se muestran resultados de ensayos con la configuración feedback. Usando un tono puro como señal perturbadora se logró una atenuación de 30dB, que es adecuada según requerimientos de performance en aplicaciones de control activo de ruido.

Palabras clave


acústica; audio; control; filtered-X LMS; EDU-CIAA-NXP

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Referencias


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Copyright (c) 2018 Pablo Gomez

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