Buscar
Mostrando ítems 1-10 de 669
Practical active control of cavity noise using loop shaping: Two case studies
(2017-06-01)
A simple loop shaping technique is applied to design an optimal, robust feedback controller to reduce the interior noise of an acoustic cavity. It is a data-based technique that uses the measured plant response to tune the ...
Active wind noise hybrid control in motorcycle helmets
(The Acoustical Society of Japan, 2016-02)
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 ...
An indirect hybrid sound transmission loss controller
(Elsevier Sci LtdOxfordInglaterra, 2012)
Time-varying noise control in motorcycle helmets
(Acoustical Society of Japan, 2015-07)
The time-varying approach is designed to have an attenuation level that increases with the speed between the helmet and the air (since the noise level increases with speed) using a linear parameter-varying (LPV) controller. ...
Active sound quality control of engine induced cavity noise
(ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD, 2009)
Active control solutions appear to be a feasible approach to cope with the steadily increasing requirements for noise reduction in the transportation industry. Active controllers tend to be designed with a target on the ...
Energetic analysis of an actively controlled one-dimensional acoustic waveguide
(Elsevier Sci LtdOxfordInglaterra, 2003)
Utilização de filtros adaptativos em sistemas de redução ativa de ruído para ambientes amplos
(Universidade Tecnológica Federal do ParanáCuritibaBrasilPrograma de Pós-Graduação em Engenharia Elétrica e Informática IndustrialUTFPR, 2019-09-27)
Industrial noise is a worrysome occupational health and safety subject-matter for employees. Prolonged exposure to noise may generate hearing loss or even heart or psychological problems. This study aims to evaluate the ...