Abstract
A new open, thin and low frequency acoustic barrier is presented. These barriers, based on arrays of isolated pickets produce high acoustic attenuation in a selective range of frequencies related to their geometry and distribution. These open barriers are acoustically competitive with traditional ones, which are based on continuous and rigid materials. To show its versatility to in attenuating different selected ranges of frequencies, a compact numerical model is presented.Different cases are analysed and compared with experimental results. The accuracy of the experimental results compared to the simulated ones allow us to use the compact model to design these barriers in order to reduce both industrial and traffic noise on demand and to introduce them into the noise control market.
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