Active wind noise hybrid control in motorcycle helmets

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  • García Violini Demián
    Buenos Aires Institute of Technology (Instituto Tecnológico de Buenos Aires) National University of Quilmes
  • Sánchez-Peña Ricardo S.
    Buenos Aires Institute of Technology (Instituto Tecnológico de Buenos Aires) National Council of Technical and Scientific Research (CONICET)
  • Velis Ariel
    Acoustics and Lighting Laboratory (LAL)
  • Posse Carlos
    Acoustics and Lighting Laboratory (LAL)

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Abstract

In this work, three experiments are conducted. In a realistic environment (freeway), a database for the noise dynamics versus velocity in a motorcycle helmet is computed. Next, under the controlled conditions of an anechoic chamber, the models for the feedback (FB) and feedforward (FF) paths in the helmet are obtained by a filtering and identification process. Finally, in the same chamber, a hybrid (FB+FF) robust controller is tested against the actual noise measured in the freeway, and it achieves attenuations between 20 and 30 dB.

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